24th week of 2017 patent applcation highlights part 62 |
Patent application number | Title | Published |
20170170675 | ENERGY HARVESTING SYSTEM FOR IOT DEVICES - A system and related methods for powering a device module of IoT device with an energy harvesting module. A supercapacitor is charged by the energy harvesting module and discharged to the device module to power the device module. The discharge from the supercapacitor may be scheduled to power demanding tasks to provide sufficient recharging periods for the supercapacitor and avoid discharging the supercapacitor when the supercapacitor is insufficiently charged. | 2017-06-15 |
20170170676 | FOLDABLE FABRIC-BASED PACKAGING SOLUTION - Methods, systems, and apparatuses for a foldable fabric-based semiconductor package (FFP) that can assist with charging a secondary cell are described. An FFP includes: a ground plane; a first component over the ground plane; a second component adjacent to the ground plane; a third component adjacent to the second component; a molding compound encapsulating the ground plane, the first component, the second component, and the third component; a first fabric layer on a top side of the molding compound; and a second fabric layer on a bottom side of the molding compound. Each of the first, second, and third components includes one or more semiconductor dies. The third component is electrically coupled to each of the first and second components. The first and second components can wireless charge the secondary cell. The third component can power the first and second components. The ground plane can protect against electromagnetic signals. | 2017-06-15 |
20170170677 | ELECTRONIC DEVICE INCLUDING BATTERY - An electronic device is provided. The electronic device includes a housing having a first surface and a second surface, a display exposed through the first surface of the housing, a conductive coil disposed inside the housing and forming a portion of the second surface of the housing, a movable member operatively connected to at least a portion of the housing and including one or more magnets that generate a magnetic field that passes through the conductive coil, a first charging circuit electrically connected to the conductive coil for wirelessly receiving power from an external device using the conductive coil and supplying the received power to a battery of the electronic device, and a second charging circuit electrically connected to the conductive coil for supplying, to the battery of the electronic device, power that is induced in the conductive coil based on movement of the movable member. | 2017-06-15 |
20170170678 | WIRELESS CHARGING ACCESSORY APPARATUS - A wireless charging accessory apparatus is provided. The wireless charging accessory apparatus may be electrically connected to a mobile device and can wirelessly charge a wearable device placed thereon. The wireless charging accessory apparatus may draw power from the mobile device to wirelessly charge the wearable device placed thereon. | 2017-06-15 |
20170170679 | FEED SYSTEM, FEED UNIT, AND ELECTRONIC UNIT - A feed system has a first electronic unit, a second electronic unit, and a feed unit. The first electronic unit and the feed unit are separated. The feed unit transmits power to a power reception section of the second electronic unit based upon result information of a first authentication between the first electronic unit and the second electronic unit. The feed unit performs a second authentication on the second electronic unit in conjunction with power transmission. | 2017-06-15 |
20170170680 | PORTABLE ELECTRONIC DEVICE, METHOD, AND COMPUTER-READABLE RECORDING MEDIUM - An object of the present invention is to provide a portable electronic device, a method, and a computer-readable recording medium, all of which are capable of preventing the portable electronic device from being taken away by another person while charging. The smartphone includes: a touch-screen display; a power receiving unit that receives power from electromagnetic waves that are supplied from a battery charger; and a controller that restricts execution of predetermined functions in a case in which the portable electronic device is separated from the battery charger in a state where the battery charger is supplying electromagnetic waves to the power receiving unit, and enables the predetermined functions to be executed in a case in which an authentication operation is performed via the touch-screen display after restricting execution of the predetermined functions. | 2017-06-15 |
20170170681 | NOVEL WIND POWER CHARGING CIRCUIT WITH THREE-PHASE, SINGLE-STAGE AND BRIDGELESS FRAMEWORK - The present invention provides a novel wind power charging circuit with three-phase, single-stage and bridgeless framework. This novel wind power charging circuit is developed based on an isolated single-ended primary-inductance converter (SEPIC) having buck-boost converting function, and can be applied in a wind turbine system for increasing the operation scope of the input voltage provided by a wind turbine of the wind turbine system, so as to facilitate the wind turbine system include wide-range operation scope under different wind speeds, such that the electric energy production and the electromechanical conversion efficiency of the wind turbine system are able to be effectively enhanced. In addition, because this novel wind power charging circuit does not include any bridgeless PFC circuits and bridge-type diode rectifiers, the low conducting loss as well as the whole circuit volume and assembly cost of the wind turbine system can be simultaneously reduced. | 2017-06-15 |
20170170682 | DISTRIBUTED WIRELESS SENSOR NETWORK AND METHODS OF USING THE SAME - A wireless monitoring system and method of using the same is provided. The monitoring system includes a controller, wireless node assembly (WNA), and light emitting means. The controller is connected to the light emitting means for controlling its operation in response to messages received from the WNA. The messages may include information identifying the location of the WNA, and the power remaining in its power source. In response to the received message, the controller is configured to determine whether the power remaining is below a predetermined value requiring the power source to be recharged. Upon determining that the power source needs recharging, the controller activates the light emitting means such that a light energy is emitted and is in the line-of-sight of a sensor power adapter connected to the power source. The sensor power adapter is configured to convert the light energy into electricity for recharging the power source. | 2017-06-15 |
20170170683 | DATA CENTER POWER SYSTEMS WITH DYNAMIC SOURCE DESIGNATION - A data center power distribution system includes at least one switch configured to couple at least one first power source to a load and at least one converter configured to couple at least one second power source to the load. The system further includes a control circuit configured to implement a state machine that controls the at least one switch and the at least one converter to redundantly provide power to the load using variable source designations for the at least one first power source and the at least one second power source. Variation of the source designations for the at least one first power source and the at least one second power source may vary a priority relationship among the at least one first power source and the at least one second power source responsive to a control input. | 2017-06-15 |
20170170684 | Battery Energy Storage System Management Apparatus, Battery Energy Storage System Management Method, and Battery Energy Storage System - In a BESS management apparatus, a history database stores operation history data related to operation history of a BESS and price history data related to price history of a service. A state estimation unit estimates a state of charge and a state of health of a battery. A simulation unit calculates a performance score of the BESS with respect to providing of the service based on the operation history data stored in the history database and the state of charge and the state of health of the battery estimated by the state estimation unit. A price prediction unit calculates a predicted price of the service based on the price history data stored in the history database. A control parameter selection unit selects a control parameter for controlling an operation of the BESS based on the performance score and the predicted price. | 2017-06-15 |
20170170685 | METHOD AND SYSTEM FOR MANAGING A POWER GRID - A smart grid for improving the management of a power utility grid is provided. The smart grid as presently disclosed includes using sensors in various portions of the power utility grid, using communications and computing technology to upgrade an electric power grid so that it can operate more efficiently and reliably and support additional services to consumers. The smart grid may include distributed intelligence in the power utility grid (separate from the control center intelligence) including devices that generate data in different sections of the grid, analyze the generated data, and automatically modify the operation of a section of the power grid. Further, the intelligent devices in the power utility grid may cooperate together to analyze and/or control the state of the power grid. Finally, the distributed intelligence may further include distributed storage. | 2017-06-15 |
20170170686 | WIRELESS INDUCTIVE POWER TRANSFER - A wireless power transfer system includes a power transmitter ( | 2017-06-15 |
20170170687 | WIRELESS POWER TRANSFER WITH IMPROVED DEVICE IDENTIFICATION AND SIGNALING LINK SECURITY - Generally, this disclosure provides systems, devices, methods and computer readable media for wireless power transfer with improved device identification and signaling security. A Power Receiving Unit (PRU) may include a receive resonator module to receive power from a Power Transmitting Unit (PTU) over an inductive resonant coupling link. The power may be modulated to provide signaling between the PRU and the PTU over the resonant coupling link. The PRU may also include a signaling link communication module to provide a second type of signaling between the PRU and the PTU over a wireless communication link. The PRU may further include a controller module to receive a random number, generated by the PTU, over the resonant coupling link; calculate an encoded response based on the random number and on an identifier of the PRU; and transmit the encoded response to the PTU over the wireless communication link, for verification by the PTU. | 2017-06-15 |
20170170688 | System for Inductive Wireless Power Transfer for Portable Devices - In one embodiment a wireless power transfer system comprises a transmitter including a power source configured to generate a time-varying current, a first coil configured to receive the first time-varying current from the power source, wherein the time-varying current flows in the first coil in a first direction, a second coil coupled to the first coil in such a way that the time-varying current flows in the second coil in a second direction, wherein the first direction is opposite from the second direction, and an underlying magnetic layer configured to magnetically couple the first coil with the second coil, and a wireless power receiver, a ferrite core and a receiver coil that share a longitudinal axis, and a receive circuit coupled to the receiver coil configured to convert a time varying current induced in the receiver coil into a voltage. | 2017-06-15 |
20170170689 | WIRELESS CHARGING OF METAL FRAMED ELECTRONIC DEVICES - A method and system for providing wireless power transfer via a metal frame by forming a coil conductor from the metal frame from a plurality of holes and a plurality of slits positioned around the metal frame, where the plurality of holes and the plurality of slits are filled with a non-conductive material or open air. The method and system utilize the coil conductor that is connected to transmitter or receiver circuits to enable wireless power transfer and communications. | 2017-06-15 |
20170170690 | POWER TRANSMITTING APPARATUS, POWER RECEIVING APPARATUS, CONTROL APPARATUS, AND WIRELESS POWER TRANSFER SYSTEM - A power transmitting apparatus including a power supply to generate AC power; a power transmitting inductor to transfer the AC power to a power receiving apparatus through magnetic coupling with a power receiving inductor in the power receiving apparatus; a mutual coupling adjusting unit to adjust a relative position between the power transmitting inductor and the power receiving inductor; and a control unit to control the mutual coupling adjusting unit based on a mutual coupling coefficient between the power transmitting inductor and the power receiving inductor. The control unit controls the mutual coupling adjusting unit so that the mutual coupling coefficient falls within a predetermined range and an upper limit of the predetermined range is a value less than a maximum of the mutual coupling coefficient between the power transmitting inductor and the power receiving inductor. | 2017-06-15 |
20170170691 | SEMICONDUCTOR DEVICE FOR NEAR-FIELD COMMUNICATION - A semiconductor device is provided. The semiconductor device includes a first coil section that receives a first clock signal from a reader, a power generator that is electrically connected to the first coil section in accordance with a switching operation of a switch, a first near-field communication (NFC) chip that is electrically connected to the power generator and receives electric power in accordance with the first clock signal, a second NFC chip that generates a switching operation control signal for controlling the switching operation of the switch, and a second coil section that is electrically connected to the second NFC chip and receives a second clock signal from the reader. | 2017-06-15 |
20170170692 | WIRELESS ENERGY TRANSMISSION METHOD AND WIRELESS ENERGY RECEIVING DEVICE - A wireless energy transmission method and a wireless energy receiving device are provided. A method includes determining wireless energy transmission efficiencies between the wireless energy receiving device and a plurality of wireless energy sending devices respectively, and receiving wireless energy transmission from the plurality of wireless energy sending devices according to the wireless energy transmission efficiencies. Energy requested or required by the wireless energy receiving device can be distributed to the plurality of wireless energy sending devices reasonably, thereby efficiently charging the wireless energy receiving device. | 2017-06-15 |
20170170693 | STATOR ASSEMBLY - A four-pole stator assembly including a bobbin assembly; and two c-shaped stator cores, each c-shaped stator core comprising a back and first and second pole arms extending from the back. The bobbin assembly includes first and second bobbin portions, each bobbin portion comprising two hollow bobbin arms, each bobbin arm defining a slot for receiving a pole arm, and a winding wound around each bobbin arm. The c-shaped stator cores are arranged such that each c-shaped stator core bridges across both bobbin portions with one of the first and second pole arms extending through a slot in the first bobbin portion, and the other of the first and second pole arms extending through a slot in the second bobbin portion, the pole arms being fixed in the slots by adhesive. | 2017-06-15 |
20170170694 | MULTI-COMPONENT ROTOR FOR AN ELECTRIC MOTOR OF AN APPLIANCE - A motor for a laundry appliance includes a drive shaft coupled to a drum at a first end. The rotor frame is coupled proximate the second end of the drive shaft, where the rotor frame includes at least one polymeric material. A central hub includes a core and a perimetrical ring that extends circumferentially around the core. A plurality of recesses are defined within a planar surface of the perimetrical ring, wherein a portion of the polymeric material is received within the plurality of recesses to secure the rotor frame to the central hub. | 2017-06-15 |
20170170695 | RING MAGNET FOR SPM MOTOR, PRODUCTION METHOD FOR RING MAGNET FOR SPM MOTOR, SPM MOTOR, AND PRODUCTION METHOD FOR SPM MOTOR - Provided are: a ring magnet for an SPM motor with which high output power, high efficiency, and low torque ripple of the SPM motor can be realized; a method for manufacturing a ring magnet for an SPM motor; an SPM motor using a ring magnet for an SPM motor; and a method for manufacturing an SPM motor. Raw material magnet is milled to magnet powder, and the magnet powder is molded to a shape of a sheet thereby forming a green sheet. Then, a magnetic field is applied to the green sheet to perform magnetic field orientation. Further, with fixing plural green sheets after the magnetic field orientation by lamination under deformed state thereof, the plural laminated green sheets are cut to a fan-like shape, which is then followed by connecting with each other to form a ring shape and further followed by sintering to produce a permanent magnet. | 2017-06-15 |
20170170696 | MOTOR - Motor according to the present invention includes rotor core and rotor. Rotor core includes outer circumferential surface formed along shaft center, and a plurality of magnet holes. Each of magnet holes has a convex surface located on a side of rotary shaft and a concave surface located on a side of outer circumferential surface. α1 is a distance between the convex surface and the concave surface on an end part located on the side of outer circumferential surface. β1 is a distance between the convex surface and the concave surface on a central part located on the side of rotary shaft. In magnet hole, α1 is larger than β1. Bonded magnets are filled in magnet holes. α2 is a thickness of a magnet component located on the end part in an oriented direction of the magnet component. β2 is a thickness of a magnet component located on the central part in an oriented direction of the magnet component. In each of the plurality of bonded magnets, α2 is larger than β2. | 2017-06-15 |
20170170697 | ELECTRIC MOTOR - An electric motor comprising: a frame; and a stator assembly; the stator assembly including a bobbin assembly and at least one c-shaped stator core. The frame comprises at least one lug, the bobbin assembly includes at least one recess, and the stator assembly is fixed to the frame by fixing the lug inside the recess of the bobbin assembly. | 2017-06-15 |
20170170698 | ROTATING MACHINERY - Rotating machinery includes a rotor of 2n poles, 84n slots, and three-phase stator windings, where n is an integer equal to or greater than 1. A top coil and a bottom coil accommodated at the diametrically inner and outer sides of the slot are connected to each other to form the stator winding. The stator windings have 2n phase belts per one phase, the phase belt including two parallel windings. In at least one of the phase belts, the one coils are disposed in the order of the second, first, first, second, first, second, first, second, second, first, second, first, second, and first parallel windings; the other coils connected to the one coils are disposed in the order of the first, second, second, first, second, first, second, first, second, first, first, second, first, and second parallel windings. | 2017-06-15 |
20170170699 | ROTOR COIL INSULATING DEVICE - An insulating device ( | 2017-06-15 |
20170170700 | Mounting Bracket for Water Cooled Type Alternator - A mounting bracket for a water cooled type alternator is provided. The mounting bracket includes a body, a plurality of bolts attached to the body, a plurality of pivot arms including a first pivot arm attached to a first bolt in the plurality of bolts at first end of the first pivot arm, and a link arm coupled to the body at a second bolt in the plurality of bolts. | 2017-06-15 |
20170170701 | MOTOR VEHICLE AUXILIARY ASSEMBLY ELECTRIC MOTOR - A motor vehicle auxiliary assembly electric motor includes a motor stator with stator coils. The motor stator is electronically commutated. A control electronics system drives the stator coils and is potted in a cast body. An electronics chamber is closed-off and has the control electronics system and the cast body arranged therein. A gas chamber is arranged adjacent to the cast body. A pressure equalization element ventilates and vents the gas chamber. An aeration shaft is arranged to pass through the cast body and fluidically connects the gas chamber to the atmosphere. The pressure equalization element is fluidically associated with the aeration shaft. | 2017-06-15 |
20170170702 | SYSTEMS AND METHODS TO SEAL A ROTOR OR STATOR OF ELECTROMECHANICAL MOTORS OR GENERATORS - A downhole system for use in a wellbore in a subterranean formation includes an electromechanical motor or generator. The electromechanical motor or generator may, respectively, be configured convert electricity to mechanical energy or convert mechanical energy in the form of fluid flow for use in one or more downhole tools. The electromechanical motor or generator includes one of a rotor and a stator disposed concentrically around and operatively coupled to the other of the rotor and the stator. A sleeve is disposed concentrically between the rotor and the stator. The sleeve contacts a body to enclose and hermetically seal one of the rotor and the stator therein. The sleeve comprises at least one metal portion and at least one non-magnetic and non-conductive portion. Related methods involve the formation of such a motor or generator. | 2017-06-15 |
20170170703 | ROTOR ALIGNMENT FOR REDUCING VIBRATIONS AND NOISE - For reducing vibrations and noise in electrical machines a rotor is mounted in a magnetic alignment device while a bearing shield is loosely held relative to a stator. The rotor is driven by the stator and vibrations of the rotor are detected. A magnetic alignment device is controlled so as to reduce the vibrations. Finally the bearing shield is fixed to the stator in a position determined by the controlling of the magnetic alignment device. Thus electromagnetic forces are taken into consideration during vibration and noise reduction. | 2017-06-15 |
20170170704 | BEARING ASSEMBLY FOR ELECTRICAL GENERATOR - A bearing assembly for an electrical generator includes a frame, a bearing liner, a bearing and a non-metallic ring. The frame is configured to connect with a housing of the electrical generator. The bearing liner is connected with the frame. The bearing is received in the bearing liner. The non-metallic ring is interposed between the bearing liner and the bearing. | 2017-06-15 |
20170170705 | ROTARY ELECTRIC MOTOR AND METHOD OF MANUFACTURING THE ROTARY ELECTRIC MOTOR - A rotary electric motor includes an annular stator, a rotor rotatably held on an inner circumferential side of the stator, a plurality of stator cores forming the stator, insulators attached to the stator cores and formed of an insulating material, coils wound around the insulators, and a plurality of terminals to which coil terminal lines of the coils are connected. Each of the terminals includes at least two protrusions protruding from a substrate. The at least two protrusions are formed of a permanent press-fitting portion for press-fitting one of the terminals into the corresponding one of the insulators and a temporary press-fitting portion for temporarily press-fitting the one of the terminals when the corresponding one of the coil terminal lines is joined to the one of the terminals with solder. | 2017-06-15 |
20170170706 | MULTI-COMPONENT ROTOR FOR AN ELECTRIC MOTOR OF AN APPLIANCE - A motor for a laundry appliance includes a drive shaft coupled to a drum at a first end. The rotor frame is coupled proximate the second end of the drive shaft, where the rotor frame includes at least one polymeric material. A central hub includes a core and a perimetrical ring that extends circumferentially around the core. A plurality of recesses are defined within a planar surface of the perimetrical ring, wherein a portion of the polymeric material is received within the plurality of recesses to secure the rotor frame to the central hub. | 2017-06-15 |
20170170707 | POWER TRANSMISSION APPARATUS FOR VEHICLE - A power transmission apparatus includes a first electric motor, a power split mechanism, a second electric motor, a case, a support wall, and a breather mechanism. The case accommodates the first electric motor, the power split mechanism, and the second electric motor. The support wall is provided between the power split mechanism and the second electric motor. The breather mechanism is located in a rotational angle range that is at least equal to 90 degrees and is smaller than 180 degrees. The breather mechanism has a through hole and a breather chamber. The breather chamber is provided at a case inner side end of the through hole and is opened in a direction that does not oppose a virtual surface that passes through the rotational axis at a rotational angle of 90 degrees of the second electric motor. | 2017-06-15 |
20170170708 | ELECTRIC MACHINE, LOCK AND ASSOCIATED METHOD - An electric machine is provided. The machine includes a housing and a coil operably connected to the housing. The machine also includes a rotor. The rotor is rotatably secured to the housing and defines a first end of the housing which extends outwardly from a first end of the housing. The machine also includes a locking mechanism connected to the housing and selectively connected to the rotor. The locking mechanism is adapted to selectively provide a first mode in which the rotor may rotate relative to the housing and a second mode in which the rotor may not rotate relative to the housing. | 2017-06-15 |
20170170709 | ELECTRIC MOTOR - An electric motor including: a frame; a rotor assembly including a magnet, a bearing assembly, an impeller, and a shaft; and a stator assembly including a stator core and a bobbin. The frame has an inner wall and an outer wall, the outer wall surrounds the inner wall and defines an annular channel between the inner wall and the outer wall, and diffuser vanes extend from the inner wall to the outer wall through the annular channel. The inner wall defines a bore for supporting the rotor assembly, and the outer wall defines a substantially cylindrical outer casing of the motor. | 2017-06-15 |
20170170710 | FLUX SHIELD HAVING SPLIT STRUCTURES AND GENERATOR INCLUDING THE SAME - Disclosed herein are a flux shield and a generator including the same and, more particularly, a flux shield including split structures and a generator including the same. | 2017-06-15 |
20170170711 | METHOD FOR PRODUCING A WOUND STATOR OF A ROTARY ELECTRICAL MACHINE - The invention relates mainly to a method for producing a wound stator ( | 2017-06-15 |
20170170712 | VIBRATION MOTOR - A vibration motor includes a stationary portion including a casing and a coil; a vibrator including a magnet, and supported to be capable of vibrating in a first direction with respect to the stationary portion; and an elastic member arranged between the stationary portion and the vibrator. The elastic member includes an increased thickness portion including a fixed surface fixed to one of the vibrator and the stationary portion; a decreased thickness portion having a thickness smaller than that of the increased thickness portion as measured in the first direction; and a connection portion arranged between the increased thickness portion and the decreased thickness portion in a second direction perpendicular to the first direction. The connection portion is arranged to have a thickness smaller than that of the increased thickness portion and greater than that of the decreased thickness portion. | 2017-06-15 |
20170170713 | FLYWHEEL, MANUFACTURING METHOD THEREOF, AND POWER GENERATING APPARATUS - In accordance with an embodiment, a flywheel includes a rotary shaft which is rotatably provided to the flywheel, a rotor which is fixed to the rotary shaft and rotatable with the rotary shaft, and an unrotatable stator arranged so as to face the rotor. The rotor includes first permanent magnets provided on a first surface facing the stator. The stator includes second permanent magnets which are provided on a second surface facing the rotor in correspondence with the first permanent magnets respectively and have the same polarity as that of the first permanent magnets. | 2017-06-15 |
20170170714 | MULTI-PHASE VOLTAGE CONVERTER WITH FAULT INSTRUCTION CIRCUIT - A switching circuit with a fault instruction circuit used in a voltage converter or a multi-phase voltage converter. The switching circuit has a pin, the pin is configured to receive a control signal during a normal operation, and the pin is also configured to output a fault instruction signal when one or more faults occur in the switching circuit. The instruction signal represents each of the one or more faults with a particular value. | 2017-06-15 |
20170170715 | METHOD OF CONTROLLING AN INVERTER - A method of controlling an inverter, in which the inverter includes a single-phase inverter arrangement having a complementary pair of power switches, including the steps of: controlling the complementary pair of power switches with a modulating signal to output an AC signal; monitoring a collector-emitter voltage of each of the pair of power switches; if the collector-emitter voltage exceeds a predetermined value, the corresponding one of the pair of power switches is judged to be in a short circuit condition; and if either one of the pair of power switches is judged to be in a short circuit condition, executing a shutdown operation to switch off the corresponding one of the pair of power switches. | 2017-06-15 |
20170170716 | SYSTEMS AND METHODS FOR PROTECTING POWER CONVERSION SYSTEMS UNDER OPEN AND/OR SHORT CIRCUIT CONDITIONS - System and method are provided for protecting a power converter. The system includes a first comparator, and an off-time component. The first comparator is configured to receive a sensing signal and a first threshold signal and generate a first comparison signal based on at least information associated with the sensing signal and the first threshold signal, the power converter being associated with a switching frequency and further including a switch configured to affect the primary current. The off-time component is configured to receive the first comparison signal and generate an off-time signal based on at least information associated with the first comparison signal. The off-time component is further configured to, if the first comparison signal indicates the sensing signal to be larger than the first threshold signal in magnitude, generate the off-time signal to keep the switch to be turned off for at least a predetermined period of time. | 2017-06-15 |
20170170717 | SYSTEMS AND METHODS FOR PROTECTING POWER CONVERSION SYSTEMS UNDER OPEN AND/OR SHORT CIRCUIT CONDITIONS - System and method are provided for protecting a power converter. The system includes a first comparator, and an off-time component. The first comparator is configured to receive a sensing signal and a first threshold signal and generate a first comparison signal based on at least information associated with the sensing signal and the first threshold signal, the power converter being associated with a switching frequency and further including a switch configured to affect the primary current. The off-time component is configured to receive the first comparison signal and generate an off-time signal based on at least information associated with the first comparison signal. The off-time component is further configured to, if the first comparison signal indicates the sensing signal to be larger than the first threshold signal in magnitude, generate the off-time signal to keep the switch to be turned off for at least a predetermined period of time. | 2017-06-15 |
20170170718 | Power Converter with Tank Circuit and Over-Voltage Protection - In one implementation, a power converter with over-voltage protection includes a power switch coupled to a power supply through a tank circuit, and a control circuit coupled to a gate of the power switch. The control circuit is configured to turn the power switch OFF based on a current from the tank circuit, thereby providing the over-voltage protection to the power converter. In one implementation, the power converter is a class-E power converter. In one implementation, the control circuit is configured to sense the current from the tank circuit based on a voltage drop across a sense resistor coupled to the power switch. | 2017-06-15 |
20170170719 | APPARATUS AND METHOD FOR PREVENTING REVERSE CURRENT IN DC-DC CONVERTER OF VEHICLE - An apparatus and a method for preventing a reverse current in a DC-DC converter of a vehicle including a measurement portion configured to measure an output voltage of the DC-DC converter of the vehicle; a verification portion configured to verify a difference between the output voltage and a preset reference output voltage at every preset period; and a controller configured to control a switch of a synchronous rectification circuit, which is implemented at a secondary side of a main transformer of the DC-DC converter, to be in an ON or OFF state according to the difference between the output voltage and the preset reference output voltage. | 2017-06-15 |
20170170720 | POWER SUPPLY - A power supply circuit includes: an anti-electromagnetic interference circuit configured to receive input alternating current power and to output filtered alternating current power; a rectifier circuit configured to rectify the filtered alternating current power; a current correction circuit configured to perform passive power factor correction on the rectified alternating current power; a single-ended flyback converter circuit coupled to the output of the current correction circuit; and a dimming control circuit coupled between the output of the single-ended flyback converter circuit and a light load, wherein the current correction circuit is configured to control a waveform of the rectified alternating current power to follow a current output to the light load in order to provide passive power factor correction. | 2017-06-15 |
20170170721 | Low-Noise High Efficiency Bias Generation Circuits and Method - A bias generation method or apparatus defined by any one or any practical combination of numerous features that contribute to low noise and/or high efficiency biasing, including: having a charge pump control clock output with a waveform having limited harmonic content or distortion compared to a sine wave; having a ring oscillator to generating a charge pump clock that includes inverters current limited by cascode devices and achieves substantially rail-to-rail output amplitude; having a differential ring oscillator with optional startup and/or phase locking features to produce two phase outputs suitably matched and in adequate phase opposition; having a ring oscillator of less than five stages generating a charge pump clock; capacitively coupling the clock output(s) to some or all of the charge transfer capacitor switches; biasing an FET, which is capacitively coupled to a drive signal, to a bias voltage via an “active bias resistor” circuit that conducts between output terminals only during portions of a waveform appearing between the terminals, and/or wherein the bias voltage is generated by switching a small capacitance at cycles of said waveform. A threshold voltage bias voltage generation circuit may A charge pump for the bias generation may include a regulating feedback loop including an OTA that is also suitable for other uses, the OTA having a ratio-control input that controls a current mirror ratio in a differential amplifier over a continuous range, and optionally has differential outputs including an inverting output produced by a second differential amplifier that optionally includes a variable ratio current mirror controlled by the same ratio-control input. The ratio-control input may therefore control a common mode voltage of the differential outputs of the OTA. A control loop around the OTA may be configured to control the ratio of one or more variable ratio current mirrors, which may particularly control the output common mode voltage, and may control it such that the inverting output level tracks the non-inverting output level to cause the amplifier to function as a high-gain integrator. | 2017-06-15 |
20170170722 | SELF-OSCILLATING SWITCHED-CAPACITOR DC-DC CONVERTER - A self-oscillating DC-DC converter structure is proposed in which an oscillator is completely internalized within the switched-capacitor network. This eliminates power overhead of clock generation and level shifting and enables higher efficiency at lower power levels. Voltage doublers are cascaded to form a complete energy harvester with a wide load range from 5 nW to 5 μW and self-starting operation down to 140 mV. Because each doubler is self-oscillating, the frequency of each stage can be independently modulated, thereby optimizing the overall conversion efficiency. | 2017-06-15 |
20170170723 | CHARGE PUMP STABILITY CONTROL - An apparatus for power conversion includes a switching network that controls interconnections between pump capacitors in a capacitor network that has a terminal coupled to a current source, and a charge-management subsystem. In operation, the switching network causes the capacitor network to execute charge-pump operating cycles during each of which the capacitor network adopts different configurations in response to different configurations of the switching network. At the start of a first charge-pump operating cycle, each pump capacitor assumes a corresponding initial state. The charge-management subsystem restores each pump capacitor to the initial state by the start of a second charge-pump operating cycle that follows the first charge-pump operating cycle. | 2017-06-15 |
20170170724 | Power output circuit and related control method - A power output circuit includes a charge pump, a voltage regulator, a clock generator and a voltage detector. The charge pump is used for receiving a clock signal having an operating frequency and outputting an output voltage. The voltage regulator, coupled to the charge pump, is used for outputting a control voltage to the charge pump, to control the output voltage. The clock generator, coupled to the charge pump, is used for outputting the clock signal to the charge pump. The voltage detector, coupled to the clock generator and the voltage regulator, is used for detecting the control voltage and controlling the clock generator to adjust the operating frequency of the clock signal according to a magnitude of the control voltage. | 2017-06-15 |
20170170725 | SWITCHED-CAPACITOR CONVERTERS WITH LOW-VOLTAGE GATE DRIVERS - A power-conversion apparatus includes active-semiconductor switches configured to transition between first and second states that result in corresponding first and second electrical interconnections between capacitors and at least one of first and second terminals configured to be coupled to first and second external circuits at corresponding first and second voltages, a pre-charge circuit coupled to at least one of the capacitors, and gate-driver circuits, each of which includes a control input, power connections, and a drive output. Each switch is coupled to and controlled by a drive output of one of the gate-driver circuits. Power for the gate-driver circuits comes from charge stored on at least one of the capacitors via the power connection of that gate-driver circuit. | 2017-06-15 |
20170170726 | POWER SUPPLY AND DRIVING METHOD THEREOF - A power supply includes a voltage converter circuit which converts an input voltage into an output voltage and outputs the output voltage, a voltage controller which controls the voltage converter circuit in response to a first feedback voltage or a second feedback voltage, a feedback terminal which supplies the first feedback voltage, an internal voltage divider circuit which supplies the second feedback voltage, and a switch unit which transfers the first feedback voltage or the second feedback voltage to the voltage controller. | 2017-06-15 |
20170170727 | LIGHT SWITCH DEVICE - A lighting device includes a DC/DC converter, a drive circuit, and a delay circuit. The drive circuit generates a feedback signal and a PWM signal. The feedback signal indicates whether or not a voltage required for a constant current to flow in a solid-state light emitting device is applied to the solid-state light emitting device. The PWM signal indicates a current supply period during which a current flows in the solid-state light emitting device. The delay circuit delays at least one of a start timing and an end timing of the current supply period with respect to the PWM signal. The DC/DC converter includes: a switching element, and a control circuit which performs control such that the switching element switches in accordance with the feedback signal generated by the drive circuit, during an on-duty period determined by the PWM signal the timing of which has been delayed by the delay circuit. | 2017-06-15 |
20170170728 | BOOST DC-DC CONVERTER HAVING DIGITAL CONTROL AND REFERENCE PWM GENERATORS - A boost DC-DC converter operating in pulse frequency modulation (PFM) and pulse width modulation (PWM) modes includes a plurality of PWM signal generators. The PWM signal generators generate PWM signals with different duty cycles. PWM signals with larger duty cycles may be selected for use in undervoltage situations. | 2017-06-15 |
20170170729 | DC-DC CONVERTER - Provided is a DC-DC converter implemented in a small area with a fast transient response. The DC-DC converter includes: a power supply unit configured to supply an input voltage; an inductor connected between an output terminal where an output voltage is outputted and the power supply unit; an emulator connected to both ends of the inductor to generate a feedback voltage; and a control circuit configured to control the power supply unit through a time domain control based on the output voltage and the feedback voltage. | 2017-06-15 |
20170170730 | AMPLIFIER CIRCUIT AND VOLTAGE REGULATOR - Provided are an amplifier circuit capable of improving phase characteristics, and a voltage regulator including the amplifier circuit. The amplifier circuit is configured to amplify an input voltage and to output the input voltage, and includes a current source, a first transistor having a gate to which the input voltage is applied, and a second transistor having a gate to which a voltage synchronous with the input voltage is applied, and a source connected to a capacitor. | 2017-06-15 |
20170170731 | MULTI-FUNCTION POWER CONTROL CIRCUIT USING ENHANCEMENT MODE GALLIUM NITRIDE (GAN) HIGH ELECTRON MOBILITY TRANSISTORS (HEMTS) - Embodiments of the present disclosure relate to a multi-function circuit. The circuit comprises a low side circuit that is comprised with a first set of enhancement mode transistors. The half bridge circuit also includes a high side circuit that is comprised of a second set of transistors. Each of the enhancement mode transistors of the first set and second set of enhancement mode transistors are Gallium Nitride (GaN) transistors. In some embodiments, the GaN transistors are High Electron Mobility Transistors (HEMTs). In additional embodiments, the GaN transistors are configured and operated as saturated switches. In further embodiments, the half bridge circuit is designed as a discrete circuit. Additionally, each of the first set and second set of transistors, diodes, resistors, and all passive elements are discrete components arranged to form a half bridge circuit. In fact, the entire half bridge circuit is built from discrete components. | 2017-06-15 |
20170170732 | SYSTEM AND METHOD FOR ZERO VOLTAGE SWITCHING AND SWITCH CAPACATOR MODULATION - A direct current driver circuit for driving a modulated direct current is disclosed. The direct current driver circuit uses a switched capacitor network to keep the circuit operating within carefully prescribed voltage levels in order to reduce energy losses. | 2017-06-15 |
20170170733 | REDUNDANT POWER SUPPLY APPARATUS - A redundant power supply apparatus includes at least two power inlets, at least two power supply units, and a common component. Each power inlet is connected to an AC power source. Each power supply unit has an input side and the at least two power supply units having a common output side, each input side is connected to the power inlet, and each power supply unit is configured to convert the AC power source into a DC power source. The common component is connected at the common output side and configured to receive DC power sources. Accordingly, the redundant power supply apparatus is provided to improve reliability of redundant operations between multiple external power sources without using mechanical switches. | 2017-06-15 |
20170170734 | TWO STAGE STRUCTURE FOR POWER DELIVERY ADAPTER - In one general aspect, a system can include an electromagnetic interference (EMI) filter, an alternating current (AC) rectifier bridge operatively coupled to the electromagnetic filter, the AC rectifier bridge providing a first voltage, a first power stage including a step-down transformer, the first power stage configured to receive the first voltage and output a second voltage, a second power stage configured to receive the second voltage and configured to convert the second voltage to a third voltage, and a power delivery adapter controller configured to receive at least one input indicative of a requested voltage value and configured to provide at least one output for use by the second power stage, the second power stage configured to determine a value for the third voltage based on the at least one output. | 2017-06-15 |
20170170735 | RESONANT CONVERTER SYSTEM - A resonant converter system is provided. The resonant converter system includes a secondary side of a transformer that is disposed within an LLC resonant converter. The secondary side of the transformer is configured with a single coil. Additionally, a rectifier of a secondary side of the LLC resonant converter includes a single diode. | 2017-06-15 |
20170170736 | POWER CONVERTER - A power converter for converting an input voltage into a predetermined voltage. The power converter includes a housing including a conductive portion. At least two capacitors are electrically connected to the conductive portion. A transformer, which is configured to serve as a choke coil, includes a winding and a core surrounding the winding with a portion of the winding being exposed from the core. The winding includes a lead that is led out from the exposed portion of the winding to the exterior of the transformer. The at least two capacitors, the lead, and the conductive portion of the housing form a loop circuit together. At least part of the exposed portion of the winding overlaps an internal region of the loop circuit, in a front view of the transformer as seen from a direction in which the lead is led out from the exposed portion of the winding. | 2017-06-15 |
20170170737 | SWITCHING POWER-SUPPLY CIRCUIT - A switching power-supply circuit includes a second rectifying/smoothing circuit arranged to generate a second output voltage by rectifying and smoothing the output of a second secondary winding, and the second rectifying/smoothing circuit includes a second rectifier circuit and a capacitor, connected to the second secondary winding. A second switching control circuit operates in response to an alternating-current winding voltage occurring in the second secondary winding, and includes a time constant circuit causing a switch mechanism connected to the control terminal of a rectifier switch element to operate, and a second feedback circuit arranged to detect and feed back the second output voltage to the time constant circuit. | 2017-06-15 |
20170170738 | SYSTEM AND METHOD FOR CONTROLLING CURRENT IN A POWER CONVERTER - A power converter is presented. The power converter includes a primary bridge unit coupled to a voltage source. Further, the power converter includes a secondary bridge unit coupled to a load. Also, the power converter includes a transformer disposed between the primary bridge unit and the secondary bridge unit and configured to magnetically couple the primary bridge unit to the secondary bridge unit. Additionally, the power converter includes a current sensor configured to measure instantaneous current flowing at an input terminal of the transformer. Furthermore, the power converter includes a cyclic state controller configured to receive the measured instantaneous current flowing at the input terminal of the transformer, and change a switching state of the power converter from a present switching state to a subsequent switching state based on the measured instantaneous current. | 2017-06-15 |
20170170739 | SOLAR POWER CONVERTER WITH ISOLATED BIPOLAR FULL-BRIDGE RESONANT CIRCUIT - The present invention provides a solar power converter with isolated bipolar full-bridge resonant circuit. This solar power converter system of the present invention have isolated two-stage full-bridge resonant circuit having a full-bridge resonant converter unit for solar power converter among fixed by uncontrolled phase shift controlled full bridge resonant converter unit, so as to all power switches of the full bridge resonant converter unit in any load can reach zero voltage switching, not only can improve light-load efficiency, the scope for efficiency under full load variation of both improvement and helpful. | 2017-06-15 |
20170170740 | LOW VOLTAGE DIRECT CURRENT (DC)-DC CONVERTER - Disclosed herein is a low voltage direct-current (DC)-DC converter. The low voltage DC-DC converter includes a switching portion which includes a first switching portion and a second switching portion and changes a high voltage provided from a high voltage battery to an alternating current (AC) voltage, a transformer which converts the AC voltage output from the switching portion into a low voltage, and a switching portion zero voltage switching auxiliary circuit portion which is connected between the high voltage battery and the switching portion and operates when operations of the first and second switching portions change to consume residual energy in the switching portion. | 2017-06-15 |
20170170741 | ISOLATED BUCK CONVERTER, SWITCHED MODE POWER SUPPLY, AND METHOD OF TRANSFERRING DIGITAL DATA FROM A PRIMARY SIDE TO AN ISOLATED SECONDARY SIDE OF AN ISOLATED BUCK CONVERTER - An isolated buck converter for converting an analog input voltage to an analog output voltage is capable of transferring digital data from the primary side to the secondary side. The converter comprises, on a primary side, a primary winding and a non-isolated buck connected in series, and a pair of switches switchable between a forward phase and a fly-buck phase. A secondary winding, on a secondary side, is inductively coupled to the primary winding, and a first capacitive element is connected over the secondary winding. The output voltage is achieved as the voltage over the first capacitive element. Further, the converter comprises, at the secondary side, supplementary circuitry by aid of which digital data can be transferred from the primary side to the secondary side. | 2017-06-15 |
20170170742 | CHARGING OF SPLIT DC LINKS OF A CONVERTER SYSTEM - A converter system comprises two phase modules, each phase module comprising a first converter leg and a second converter leg interconnected with a DC link, and a charging transformer for charging the DC link. The DC link comprises two capacitors connected in series between a positive point, a middle point and a negative point, each converter leg adapted for interconnecting an output with the positive point, the middle point or the negative point of the DC link. The phase modules are connected in series via outputs of the converter legs, such that a second converter leg of a lower phase module is connected with a first converter leg of a higher phase module. The charging transformer is connected to the middle point of the DC link of a highest phase module, which provides a phase output of the converter system with an output of a second converter leg. The converter system includes two converter phases, each converter phase comprising at least two series connected phase modules. At a star point of the converter phases the converter phases are star-connected via outputs of first converter legs of lowest converter modules, which are series connected with higher converter modules, whereby a module side start point of the charging transformer is connected or is not connected with the star point of the converter phases. | 2017-06-15 |
20170170743 | REGENERATIVE VARIABLE FREQUENCY DRIVE WITH AUXILIARY POWER SUPPLY - A regenerative variable frequency drive includes an active converter connected to a DC bus that is connected to a first inverter that converts DC power to variable frequency, three phase AC power, and variable frequency, three phase AC power to DC power, and to a second inverter that converts DC power to three phase AC sine wave power. The converter converts single phase AC power to DC power and DC power to single phase AC power, and maintains a selected voltage on the DC bus. The converter has an active rectifier and a controller that drives the rectifier with a pulse width modulation according to a hybrid voltage switching scheme that switches the rectifier according to a unipolar voltage switching scheme through most of each cycle and switches the rectifier according to a bipolar voltage switching scheme around each zero crossing. | 2017-06-15 |
20170170744 | VEHICLE POWER CONVERSION DEVICE - A vehicle power conversion device includes a two-level converter, a three-level converter and one cooling device. The two-level converter includes a capacitor, first switching devices and second switching devices. The three-level converter includes two capacitors, third switching devices, fourth switching devices and a bidirectional switch. The first and second switching devices are embedded in first power modules, and the third and fourth switching devices are embedded in second power modules. The second power modules have dielectric strength voltages at least equal to a voltage applicable to any one of the two capacitors connected in series included in the three-level converter, and the first power modules have dielectric strength voltages at least equal to a sum of a voltage applicable to any one of the two capacitors connected in series included in the three-level converter and a voltage applicable to the capacitor included in the two-level converter. | 2017-06-15 |
20170170745 | POWER FACTOR CORRECTION CONVERSION DEVICE AND CONTROL METHOD THEREOF - A power factor correction conversion device and control method thereof are adapted to send an AC signal to a power factor correction conversion device, convert the AC signal into a DC signal, and perform power factor correction of the DC signal, so as to change a power factor sent to a back-end load, wherein the control method includes a rectification step, a feedback step, a ripple calculating step, a ripple offsetting step, a logical computation step, a pulse width modulation step and a power factor correcting step. Hence, the second-order ripple component in a feedback signal is eliminated to thereby increase the response speed of the power factor correction conversion device and reduce the distortion rate of the current, thus increasing the power factor sent to the back-end load. | 2017-06-15 |
20170170746 | RECTIFYING CIRCUIT WITH THYRISTORS - A rectifying circuit including: between a first terminal of application of an AC voltage and a first rectified voltage delivery terminal, at least one first diode; and between a second terminal of application of the AC voltage and a second rectified voltage delivery terminal, at least one first anode-gate thyristor, the anode of the first thyristor being connected to the second rectified voltage delivery terminal; and at least one first stage for controlling the first thyristor, including: a first transistor coupling the thyristor gate to a terminal of delivery of a potential which is negative with respect to the potential of the second rectified voltage delivery terminal; and a second transistor connecting a control terminal of the first transistor to a terminal for delivering a potential which is positive with respect to the potential of the second rectified voltage delivery terminal, the anode of the first thyristor being connected to the common potential of voltages defined by said positive and negative potentials. | 2017-06-15 |
20170170747 | SWITCHING REGULATOR - A switching regulator has: a switching device; a rectifying device having the anode thereof connected to an output terminal from which an output voltage is output; an inductor arranged between the switching device and the output terminal; a controller having an error amplifier configured to produce an error signal commensurate with a difference between a voltage commensurate with the cathode voltage of the rectifying device and a reference voltage, the controller using the cathode voltage of the rectifying device as a supply voltage and turning ON and OFF the switching device according to the cathode voltage of the rectifying device; a monitor configured to monitor a current that flows through the inductor; and a current varier configured to increase, based on the result of monitoring by the monitor, a current that flows through the rectifying device with increase in the current flowing through the inductor. | 2017-06-15 |
20170170748 | Controlled Bootstrap Driver for High Side Electronic Switching Device - The subject matter of this specification can be embodied in, among other things, a method that includes providing first power received from a first power bus to a first switching device configured to switch first power to a first output port based on a first input signal received at a first input port, providing second power received from a second power bus to a second switching device configured to switch second power to a first bootstrap capacitor coupled between the second switching device and the first output port based on a second input signal received at a second input port, providing an output voltage to the first output port, providing the second input signal to the second input port, switching the second switching device based on the second input signal, and charging the first bootstrap capacitor with second power received from the second power bus. | 2017-06-15 |
20170170749 | POWER GENERATING DEVICE - A power generating device is provided. The power generating device includes an element and a moving member. The element is deformable and generates power when deforming. The moving member moves when receiving a vibration, and contacts the element when moving. When the moving member contacts the element, the element deforms into another state or returns to a previous state. | 2017-06-15 |
20170170750 | AUXILIARY GENERATOR FOR VEHICLE THAT GENERATES ELECTRIC POWER USING INERTIAL FORCE - Disclosed herein is an auxiliary generator for a vehicle that converts kinetic energy of the vehicle into electrical energy, the auxiliary generator including a spherical inertial body configured to be movable in a direction opposite to a direction in which the vehicle moves due to inertial force obtained from movement of the vehicle, a fixed pipe having the movable spherical inertial body received therein, a generation member mounted in the fixed pipe for generating electrical energy from movement of the spherical inertial body, and a converter electrically connected to the generation member for converting the electrical energy generated by the generation member into available electricity. | 2017-06-15 |
20170170751 | PIEZOELECTRIC ENERGY HARVESTING APPARATUS - A piezoelectric energy harvesting apparatus includes a housing and a piezoelectric module disposed in the housing. The piezoelectric module includes a piezoelectric wafer unit and a clamp unit clamping the piezoelectric wafer unit. A resilient member is connected between the clamp unit and an inner wall of the housing to transmit an oscillation movement to the clamp unit, which in turn causes oscillation of the piezoelectric wafer unit for generating an electric power. An impact unit extends movably into the housing and is capable of pushing the clamp unit against the resilient member when being subjected to an ambient natural force such that the resilient member generates the oscillation movement. | 2017-06-15 |
20170170752 | Dielectric blade comb piston unlimited voltage generator, fusor and more - The electric vs. mechanic bi-directional power conversion application has been traditionally and asymmetrically favoring at magnetic element as energy caching and buffering bridge, e.g. the electric motors and generators that are also abstracted as electromechanical devices. The theory behind electromechanical devices is electrodynamics. Based on the fast development of high energy density dielectric materials, my inventions are to be a game changer: let electrical field alone to take the heavy duty of electromechanical utilities, and let “dielectrodynamics” replace electrodynamics. Of the most importance is the key limitless high voltage generator, which can cover full gamut of voltages from volts to kilovolts (KV), megavolts (MV), gigavolts (GV), teravolts (TV), and whatever we need, just provided necessary space occupancy and mechanic work are secured to assist dielectric piston or blades displacement. As the nature of such an electric power supply, it is fit for pulse application, such as Z-pinch, particle accelerator, nuclear ignition, fusion reactor, ornithopter etc. Civil application is also possible, such as harvest wind power, pulse heating even with overunity and so on, but regular non-pulse application needs further power smoothing or conversion. | 2017-06-15 |
20170170753 | SYSTEM AND METHOD FOR OPERATING A THREE-PHASE LOAD FROM A SINGLE PHASE SOURCE - A power converter for operating a three-phase AC electrical machine from a single phase AC power source includes an ASD having a rectifier and inverter, and an add-on power conversion module external to the ASD that is electrically connected to each of the power source and the ASD. The power conversion module includes one or more input inductors configured to store and filter single-phase AC power received from the power source and a pair of switching devices connected to each of the input inductors at an output end thereof. A controller operably connected to the power conversion module selectively controls switching of the pair of switching devices associated with each of the one or more input inductors so as to cause a sinusoidal single phase AC power to be output from the add-on power conversion module for rectification by the rectifier. | 2017-06-15 |
20170170754 | MOTOR CONTROLLER, SHEET CONVEYING DEVICE, AND IMAGE FORMING APPARATUS - A motor controller ( | 2017-06-15 |
20170170755 | ROTATIONAL DRIVING FORCE IMPARTING DEVICE AND ELECTRIC MOTOR DEVICE FOR THE SAME - A rotational driving force imparting device includes an electric motor device and a planetary gear transmission device. Among a sun gear shaft of a planetary gear transmission device, a planetary gear carrier shaft, and an internal gear carrier shaft, one shaft forms an output shaft, another shaft forms a constant speed input shaft, and the other shaft forms a variable speed input shaft. The electric motor device includes a constant speed motor including a constant speed rotor that rotates about a shaft line and is connected to a constant speed input shaft, and a variable speed motor including a variable speed rotor that rotates about the shaft line and is connected to a variable speed input shaft. A shaft insertion hole forming a cylindrical shape about the shaft line and penetrating in the axial direction is formed in the variable speed rotor, and the constant speed rotor is inserted into the shaft insertion hole. | 2017-06-15 |
20170170756 | PWM MOTOR DRIVE DEVICE - A PWM motor drive device includes: a time counter that counts a time of a polarity of a motor phase signal; a register that retains the time; a zone setting circuit that splits the time into arbitrary zones and generates an arbitrary zone set for which a phase of motor current is adjusted; and a zone correction circuit that compares a motor current phase signal indicating the phase of the motor current with the motor phase signal to correct the zone set. | 2017-06-15 |
20170170757 | METHOD FOR DETERMINING OFFSET OF RESOLVER OF VEHICLE MOTOR - A method for measuring an offset of a resolver is arranged so as to frequently measure and correct the offset of the resolver by actively performing zero current control of a motor. The method includes steps of: determining whether a torque command value of the motor and a magnetic flux value or reverse magnetic flux value of the motor respectively fall within a first range and a second range, which have been set in advance; controlling the motor to perform zero current control for a preset time period when the torque command value of the motor falls within the first range and the magnetic flux value or reverse magnetic flux value of the motor falls within the second range; and measuring the offset of the resolver for the preset time period. | 2017-06-15 |
20170170758 | DETERMINING THE PARKED POSITION OF A PERMANENT-MAGNET MOTOR - A method of determining the parked position of a rotor of a permanent-magnet motor, including applying a first voltage to a phase winding of the motor, measuring a first parameter, removing the first voltage, waiting for current in the phase winding to decrease to zero, applying a second voltage having the opposite polarity, measuring a second parameter, comparing the first parameter and the second parameter, and determining that the rotor is in a first parked position if the first parameter is less than the second parameter, and that the rotor is in a second parked position if the first parameter is greater than the second parameter. The first parameter and the second parameter each correspond to one of (i) the time taken for current in the phase winding to exceed a threshold, and (ii) the magnitude of current in the phase winding at the end of a time interval. | 2017-06-15 |
20170170759 | OBSERVER BASED SENSORLESS CONTROL FOR U-SHAPE SINGLE PHASE SYNCHRONOUS PERMANENT MAGNET MOTORS - A method for controlling a U-shape single phase synchronous permanent magnetic motor having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch includes estimating back-electromotive force and the position of the rotor based on a voltage feedback signal, a current feedback signal, and a phase feedback signal indicative of a zero-crossing of the single phase AC power source. Once the speed and position of the rotor are determined, a controller can trigger a switch to supply power to the motor. | 2017-06-15 |
20170170760 | METHOD FOR OPERATING AN ELECTRIC MOTOR - The disclosure relates to a method for operating an electric motor. A first method is applied at a rotational speed below a predetermined limit value and a second method is applied at a rotational speed above the predetermined limit value. The first method is a method for operating an electric motor that has a stator and a rotor, wherein the stator or the rotor has at least three segments each having at least one electromagnetic element. The first method comprises the following steps: a) simultaneously de-energizing all electromagnetic elements of all segments while the rotor rotates, b) measuring an electrical quantity induced in the electromagnetic elements, in particular an induced voltage, for each segment, and c) determining a rotor position of the rotor in relation to the stator from the measured electrical quantities. The second method is a method for operating an electric motor that has a stator and a rotor, wherein the stator or the rotor has at least three segments each having at least one electromagnetic element. An electrical current can be supplied to the electromagnetic elements such that a segment magnetic field is formed, by means of which field a segment torque is applied to the rotor. The intensity of the electrical current depends on a segment position of the rotor in relation to the segment. The second method comprises the following steps: A) determining an expected time at which the segment torque of a zero-crossing segment, which is one of the at least three segments, is expected to be equal to zero, B) de-energizing all of the electromagnetic elements of the zero-crossing segment for a first measurement time interval and for a second measurement time interval, wherein the first measurement time interval lies before the expected time and the second measurement time interval lies after the expected time, C) measuring an electrical quantity induced in the electromagnetic elements of the zero-crossing segment, in particular an induced voltage, within the first measurement time interval and within the second measurement time interval, D) determining an actual time at which the segment torque of the zero-crossing segment was equal to zero from the measured electrical quantities. | 2017-06-15 |
20170170761 | SYNCHRONOUS ELECTRIC POWER DISTRIBUTION STARTUP SYSTEM - A system includes one or more synchronous generators mechanically coupled to an excitation system. The excitation system is configured to output an excitation signal to excite the synchronous generator to produce a voltage and a current at an output of the synchronous generator. During startup of the synchronous generator, the excitation system may also output pulses of the excitation signal to initiate synchronism of one or more non-rotating electric motors electrically coupled to the synchronous generator. In addition, the pulses may be output to urge rotation of the non-rotating electric motors into rotational electrical alignment with the synchronous generator and each other. | 2017-06-15 |
20170170762 | SYNCHRONOUS ELECTRICAL POWER DISTRIBUTION SYSTEM STARTUP AND CONTROL - A system may include a prime mover configured to provide mechanical energy to the system by spinning a shaft. The system further includes a synchronous AC generator mechanically coupled to the shaft, and an exciter mechanically coupled to the shaft and configured to output a field current for exciting the synchronous AC generator. The system also includes a number of synchronous electric motors electrically coupled to the AC generator and configured to drive one or more mechanical loads. A controller of the system is configured to establish and maintain a magnetic coupling between the synchronous AC generator and the synchronous electric motors by controlling a level of the field current during a ramped increase in rotation of the synchronous AC generator from zero rotational speed. The motors accelerate synchronously with the generator due to the magnetic coupling as the rotational speed of the generator increases. | 2017-06-15 |
20170170763 | SYNCHRONOUS ELECTRICAL POWER DISTRIBUTION SYSTEM - A system includes one or more synchronous generators and one or more corresponding exciters. The exciter is configured to output a field current for exciting the synchronous generator to produce a voltage and a current at an output of the synchronous generator. The system may also include one or more electric motors electrically coupled to the synchronous generator and configured to drive one or more mechanical loads. A controller included in the system is configured to identify power angle oscillations between the voltage and the current and control an exciter voltage of the exciter to damp the identified power angle oscillations. | 2017-06-15 |
20170170764 | MULTIPLE GENERATOR SYNCHRONOUS ELECTRICAL POWER DISTRIBUTION SYSTEM - A power system includes a bus, a first controller and one or more second controllers. The first controller is configured to excite a first generator to generate electric power on the bus in response to initiation of rotation of the first generator. The one or more second controllers are configured to excite one or more respective second generators with a constant excitation in response to initiation of rotation of the first generator. The second generator(s) are electrically coupled with the bus and configured to operate as a motor to commence synchronous rotation with the first generator in response to electric power being present on the bus. The second controller(s) are further configured to initiate dynamic adjustment of the excitation of the second generator(s) to generate electric power on the bus with the second generator(s) in response to the first generator and the second generator(s) synchronously reaching a predetermined rotational speed. | 2017-06-15 |
20170170765 | SYNCHRONOUS ELECTRICAL POWER DISTRIBUTION EXCITATION CONTROL SYSTEM - A system includes an exciter configured to operate with a synchronous generator. The exciter may be mechanically coupled and rotatable with the synchronous generator, or the exciter may be independently rotatable. The exciter is configured to output a field current for exciting the synchronous generator to produce a voltage and a current at an output of the synchronous generator. The synchronous generator may be synchronized with loads during a time when the synchronous generator is at substantially zero speed and the loads, such as motors, are at zero speed. A controller included in the system is configured to control output of the field current by the exciter with an exciter voltage. The controller may control the exciter voltage to selective include an AC component and DC component in accordance with a rotational speed of the exciter. | 2017-06-15 |
20170170766 | MOTOR CONTROL APPARATUS FOR VEHICLES AND CURRENT REFERENCE GENERATION METHOD USING THE SAME - Provided is a motor control apparatus for vehicles. The motor control apparatus may generate a current reference value based on a level of a field current (or a field current value) flowing in a field coil and may control a vehicle motor by using the current reference value, thereby improving torque response characteristic and maximum efficiency. | 2017-06-15 |
20170170767 | MOTOR DRIVING CIRCUIT AND MOTOR DRIVING METHOD - When a motor is started up, an initial position detection circuit detects the initial position of a rotor using an inductive sensing method. An automatic parameter generating circuit determines a parameter to be used by the initial position detection circuit. The automatic parameter generating circuit measures: (i) a first time period τ | 2017-06-15 |
20170170768 | DIVIDED PHASE AC SYNCHRONOUS MOTOR CONTROLLER - A circuit includes phase windings to receive alternating current (AC) line voltage. The circuit has a direct current (DC) power supply, a power switch circuit comprising at least one power switch, and a control circuit to turn off the power switch circuit when a rotor associated with the circuit is in an identified rotor position, rotor magnet polarity, or speed relative to the AC line voltage. The circuit also has at least one non-collapsing DC power supply component to prevent the DC power supply from collapsing when the at least one power switch is on and conducting during at least a portion of a cycle. One or more of the DC power supply, power switch circuit, and control circuit may be at a midpoint of the phase windings. | 2017-06-15 |
20170170769 | MAGNETIC INDUCTION FIXED MAGNETIC POLE ROTOR MOTOR - A rotor having rotation salient poles, a stator having fixed salient poles with a plurality of field winding sets, K control signal output sections outputting signals by detecting a plurality of sections to be formed on a cylindrical body or a disk pivoted to the rotor by a plurality of sensors installed to correspond to the fixed salient poles with the plurality of sections to be detected are opposed to a track formed in a circumferential direction, and a power-feeding control section having control circuits operating according to control signals, controlling directions and intensities of excitation currents, where the rotation salient poles are opposed to at least two salient poles, and the excitation currents are controlled with magnetic fields in the same direction occur in rotation salient poles of the salient poles advanced by at least one and magnetic fields disappear in rotation salient poles. | 2017-06-15 |
20170170770 | POWER CONVERSION APPARATUS AND AIR-CONDITIONING APPARATUS INCLUDING THE POWER CONVERSION APPARATUS - A power conversion apparatus, including: an MLC circuit configured to boost an input voltage from a three-phase rectifier; a smoothing capacitor configured to smooth an output of the MLC circuit; an inverter control unit configured to generate a PWM signal; an inverter circuit configured to convert a DC voltage of the smoothing capacitor into an AC voltage based on an input of the PWM signal and to supply the AC voltage to a motor; a boost mode switching unit having at least three boost modes in which a boost level of the input voltage is selected and configured to switch among the at least three boost modes depending on an operation status of the motor determined for the purpose of controlling a refrigeration cycle; and an MLC control unit configured to control the MLC circuit based on the switching by the boost mode switching unit. | 2017-06-15 |
20170170771 | COOLING FAN CONTROL SYSTEM AND CONTROL METHOD USING THE SAME - A cooling fan control system is provided. The system includes a sensor unit that includes a temperature sensor that generates a first output value corresponding to a coolant temperature and an air-conditioner pressure transducer that generates a second output value corresponding to an air-conditioner pressure and a cooling control portion. The cooling control portion generates a control condition based on the first output value and the second output value and adjusts a rotation speed of a cooling motor based on the control condition. The control condition includes a target control condition formed as a region including a cross point of the first output value and the second output value. The cooling control portion adjusts the rotation speed of the cooling motor to cause the first output value and the second output value to correspond to the target control condition. | 2017-06-15 |
20170170772 | MOTOR STARTER APPARATUS WITH START-UP FAULT DETECTION CAPABILITY - A motor starter apparatus includes at least one semiconductor switch configured to selectively couple a power source to a motor, at least one current sensor configured to generate a current sense signal indicative of a current provided via the at least one semiconductor switch, and a control circuit coupled to the at least one current sensor and configured to cause the at least one semiconductor switch to momentarily couple the power source to the motor and identify a fault based on a behavior of the current sense signal in response to the momentary coupling. The control circuit may be configured to identify the fault responsive to detecting that a rate of change of the current in response to the momentary coupling meets a predetermined criterion. | 2017-06-15 |
20170170773 | Shaft Mounted Monitor for Rotating Machinery - Disclosed herein is a shaft-mounted monitor for monitoring conditions of a rotating shaft using a calculated rotational component of the rotating shaft. The monitor may include a sensor such as an accelerometer, thermal sensor, strain gauge, or the like. In various embodiments, a variety of parameters relating to the rotating shaft may be monitored, such as a temperature, rotational speed, angular position, torque, power, frequency, or the like. The monitor may include a wireless transmitter to transmit the monitored condition of the rotating shaft to an intelligent electronic device or a monitoring system. | 2017-06-15 |
20170170774 | OVERLOAD DETECTION IN A POWER TOOL - A power tool includes a motor, a power circuit coupled to the motor, and a speed sensor coupled to the motor. The power circuit provides power to the motor. The speed sensor detects a position of the motor. The power tool also includes an electronic processor coupled to the motor and the speed sensor. The electronic processor is configured to receive an output signal from the speed sensor indicative of a measured speed of the motor at a first time, determine a cumulative value based on the measured speed of the motor, and interrupt power from the power circuit to the motor when the cumulative value exceeds an accumulator threshold. | 2017-06-15 |