25th week of 2019 patent applcation highlights part 74 |
Patent application number | Title | Published |
20190190357 | STATOR, STATOR MANUFACTURING METHOD AND MOTOR - A stator includes core pieces in which at least first and second laminate members are laminated, the first laminate member includes a first tooth portion and a first core back portion, the second laminate member includes a second tooth portion and a second core back portion, positions of both circumferential ends of the first core back portion are different from positions of both circumferential ends of the second core back portion, the first core back portion and the second core back portion have an inclined or curved shape at a lower side of one side thereof in the circumferential direction or the other side thereof in the circumferential direction which overlaps the core piece adjacent thereto, and the inclined or curved shape of the first core back portion and the second core back portion is at a portion protruding in the circumferential direction with respect to the second core back portion and the first core back portion in a plan view. | 2019-06-20 |
20190190358 | Rotor Balancing/Fixation Via Injection or Compression Molding - A method of balancing a rotor and/or fixing rotor components includes arranging a plurality of generally like laminations side by side in a stack to form at least a part of a rotor. The rotor has a rotational center axis and each of the laminations having a plurality of apertures that cooperate to form passages that extend axially along a length of the stack. In accordance with an aspect of the method, a polymer based fixation material is filled in the passages in a manner to fix the laminations together in the stack. With the fixation material, a sprue is formed, projecting from an axial face of the stack. In accordance with another aspect of the method, a weight of the sprue is adjusted to rotationally balance the rotor about the rotor center axis. | 2019-06-20 |
20190190359 | MANUFACTURING APPARATUS AND MANUFACTURING METHOD OF ELECTRICAL ROTATING MACHINE - A manufacturing apparatus of an electrical rotating machine includes a coil segment shaping section for shaping a linear wire rod with a predetermined length into a coil segment with a predetermined shape consisting of a pair of slot insertion port ions extending substantially in parallel with each other and a linking portion for coupling the pair of slot insertion portions, and a coil assembling section for assembling a coil by circularly arranging the coil segments shaped in the coil segment shaping section. The coil segment shaping section and the coil assembling section are constituted to continuously perform the shaping and the assembling of the coil segment in each coil segment unit, based on control data set depending on a coil to be fabricated. | 2019-06-20 |
20190190360 | METHOD OF MANUFACTURING ROTOR, ROTOR, AND MOTOR - A method of manufacturing a rotor includes forming plates each including a scrap portion that has a center hole and core plate portions that are disposed continuously with the scrap portion on an inner side of the center hole and that each defines a portion of a corresponding one of the outer cores forming a multilayer body including the outer cores by stacking the plates, setting at least a portion of the multilayer body and a portion of the inner core in a mold with a gap therebetween in the radial direction, forming a molded body by pouring a molten filling material into a gap in the mold and forming the filling section, at least a portion of the filling section being positioned between the outer cores, and separating the scrap portion and the core plate portions from each other. | 2019-06-20 |
20190190361 | Resin Sealing Device and Resin Sealing Method for Manufacturing Magnet Embedded Core - A magnet embedded core is manufactured in a stable manner even when using a die clamping device having a large rated clamping force by preventing an excessive pressurizing force from being applied to a laminated iron core, performing the clamping with an appropriate pressurizing force so to minimize leakage of the resin out of magnet insertion holes, and suppressing a reduction in the geometric and dimensional precision of the laminated iron core. A die clamping device for driving a moveable platen in a direction toward and away from a fixed lower platen is configured to include a toggle link mechanism. In a fully extended state of the toggle link mechanism, an upper die abuts an end surface of the laminated iron core to close openings of the magnet insertion holes and pressurize the laminated iron core in a laminating direction. | 2019-06-20 |
20190190362 | MOTOR - Disclosed is a motor improved to increase a magnetization property. The motor includes a stator including a plurality of teeth arranged to be spaced apart in a circumferential direction and a rotor configured to include a plurality of magnets arranged inside or outside the stator and to rotate while electromagnetically interacting with the stator. The plurality of teeth include first teeth having a first cross section and second teeth having a second cross section larger than the first cross section and is configured to switch at least one magnetic pole of the plurality of magnets by using the second teeth. | 2019-06-20 |
20190190363 | SPINDLE MOTOR AND DISK DRIVE DEVICE INCLUDING THE SAME - A spindle motor includes a stationary unit and a rotating unit. The rotating unit is rotatable with respect to the stationary unit in a state in which the stationary unit is aligned with a central axis. The stationary unit includes a stator core and coils. The stator core includes a cylindrical core back and teeth units extending radially outward from an outer circumferential portion of the core back. The coils are defined by a conductive wire wound around each of the teeth units. The rotating unit includes a magnet located radially outside the teeth units. An axial length of the magnet is shorter than an axial length of the teeth unit. A first angle corresponding to a circumferential width of the teeth unit is smaller than a second angle corresponding to a circumferential gap between the adjacent teeth units. | 2019-06-20 |
20190190364 | MULTI-TEETH SWITCHED RELUCTANCE MOTOR - Various embodiments are described herein for switched reluctance machine configurations. In at least one embodiment, a switched reluctance machine configured according to the teachings herein comprises an axially extending shaft, an axially extending rotor mounted to the shaft, the rotor having a plurality of salient rotor poles, an axially extending stator disposed coaxially and concentrically with the rotor, the stator having a plurality of salient stator poles protruding radially from the stator towards the rotor poles, a plurality of stator teeth and tooth-tips, and a plurality of electrical coils wound about the stator poles to define a plurality of phases of the switched reluctance machine, where a number of stator poles can be determined according to the following equation and at least one constraint condition: | 2019-06-20 |
20190190365 | LINEAR ACTUATOR - Provided is a linear actuator including a movable element, a stationary element, a magnetic drive mechanism configured to linearly move the movable element in a first direction with respect to the stationary element, and damper member arranged between the movable element and the stationary element. The magnetic drive mechanism includes a coil holder arranged on the stationary element, a coil supported by a coil supporting unit of the coil holder, a first yoke arranged on the movable element, and a first permanent magnet held by the first yoke. The damper member is arranged in a portion where the first yoke and the coil holder face each other in the second direction. As a result, the damper member can be arranged between the stationary element and the movable element without using a case. | 2019-06-20 |
20190190366 | LINEAR CONVEYOR DEVICE - A linear conveyor device includes a slider having a linear motor mover; a straight-line conveyance part formed of a connected body of modules each having a linear motor stator and first and second guide rails for guiding movement of the slider on an upper surface of the module; and a cover member. The cover member covers the upper surface of the module so as to cover and conceal the linear motor stator and the first and second guide rails from above. The slider has a shape which allows the slider to be fitted on the cover member in a movable manner in an extending direction of the straight-line conveyance part. | 2019-06-20 |
20190190367 | Power Supply Conversion Circuit - A power supply conversion circuit is provided, which includes: a first voltage clamping module configured to decrease an input voltage to a preset low voltage; a boost module configured to increase the input voltage or the preset low voltage to a target voltage; a second voltage clamping module configured to maintain the target voltage within a preset voltage range; a filter module configured to filter out ripples in the target voltage; and at least one output module, each of which is configured to supply power to a load. Compared with a conventional LDO integrated circuit, the circuit can provide multiple output power supplies, and it is only required to additionally arrange one field effect transistor for one more output power supply. Therefore, the power supply conversion circuit has a simple structure, is expandable easily and is applicable to an analog integrated circuit requiring multiple output power supplies. | 2019-06-20 |
20190190368 | Compensation Inductor for Charge Transfer Within Switched Capacitor Converter - Circuits and methods are provided for soft switching within a switched-capacitor DC/DC converter, so as to reduce switching losses and improve efficiency. This is accomplished, in preferred converters, by coupling a compensation inductor between one half-bridge of an output rectifier and another half-bridge of the output rectifier. The compensation inductor functions to transfer charge from or to the capacitance of switches within the converter while the switches are off, such that the voltage across each switch is reduced to zero before that switch is turned on. This provides zero-voltage switching (ZVS) and its associated high efficiency. The efficiency associated with the ZVS makes ideal zero-current switching (ZCS) less important, such that high-precision capacitors and inductors forming the resonant tanks required by near-ideal ZCS are not required. The resultant circuits are physically smaller and less expensive than other converters that require near-ideal ZCS, but achieve similar or better efficiency. | 2019-06-20 |
20190190369 | POWER CONVERSION DEVICE - A power conversion device includes a power semiconductor switching device and a drive circuit. The power semiconductor switching device is configured to supply constant power to a load by switching and to be turned on and off by a control signal from an external control circuit. The drive circuit is configured to detect an operating temperature of the power semiconductor switching device and drive the power semiconductor switching device according to a result of the detection. The drive circuit includes a temperature detecting unit configured to receive the control signal from the external control circuit and detect the operating temperature of the power semiconductor switching device at timings according to the control signal. | 2019-06-20 |
20190190370 | INTERLEAVED BOOST CONVERTER WITH HOLDUP TIME EXTENSION - A power factor correction device for providing tolerance to a fault condition in an input supply can include a first boost circuit, a second boost circuit, and a controller circuit. The controller circuit can interleave operation of the first boost circuit and operation of the second boost circuit such as to generate an output voltage when the input supply is received at the power factor correction device. The controller circuit can route, in response to the fault condition, a stored supply of the second boost circuit to an input of the first boost circuit. The controller circuit can control the first boost circuit to maintain the output voltage. | 2019-06-20 |
20190190371 | ELECTRONIC DEVICE WITH A CHARGE RECYCLING MECHANISM - An electronic device includes: a clock booster including a doubler capacitor, the clock booster configured to precharge the doubler capacitor to store a boosted intermediate voltage greater than an input voltage; a secondary booster including a booster capacitor, the secondary booster configured to use charges stored on the doubler capacitor to generate a stage output greater than the boosted intermediate voltage; and a connecting switch connected to the clock booster and the secondary booster, the connecting switch configured to electrically connect the doubler capacitor and the booster capacitor during a recycling duration for discharging a recycled charge from the booster capacitor to the doubler capacitor through the connecting switch, wherein the recycling duration is after generating the stage output. | 2019-06-20 |
20190190372 | ELECTRONIC DEVICE WITH A CHARGING MECHANISM - An electronic device includes: a clock booster including a doubler capacitor, the clock booster configured to precharge the doubler capacitor and provide a boosted intermediate voltage greater than an input voltage; a secondary booster including a booster capacitor, the secondary booster configured to use the voltage stored on the doubler capacitor to generate a stage output greater than the boosted intermediate voltage; and a connecting switch connected to the clock booster and the secondary booster, the connecting switch configured to electrically connect the doubler capacitor and the booster capacitor during a direct charging duration for charging the booster capacitor using source-secondary current from an input voltage supply instead of or in addition to the voltage stored on the doubler capacitor. | 2019-06-20 |
20190190373 | Multi Output Three Level Buck Converter - A power converter can include a charge pump that receives an input voltage and generates a flying rail voltage therefrom and a plurality of buck converters configured to generate regulated voltages from the flying rail voltage. A symmetric controller can have an outer control loop configured to regulate the flying rail voltage and a plurality of inner control loops in communication with the outer control loop and configured to control the plurality of buck converters to generate regulated output voltages responsive to one or more signals received from the outer control loop. The outer loop can be configured to include a hysteretic controller. The outer control loop can be further configured to provide a signal to the plurality of inner control loops indicating whether the inner control loops should control respective buck converters to charge or discharge a capacitor supporting the flying rail voltage. | 2019-06-20 |
20190190374 | ELECTRONIC DEVICE WITH A CHARGING MECHANISM - An electronic device includes: a clock booster including a doubler capacitor, the clock booster configured to precharge the doubler capacitor and provide a boosted intermediate voltage greater than an input voltage; a secondary booster including a booster capacitor, the secondary booster configured to use the voltage stored on the doubler capacitor to generate a stage output greater than the boosted intermediate voltage; and a connecting switch connected to the clock booster and the secondary booster, the connecting switch configured to electrically connect the doubler capacitor and the booster capacitor during a direct charging duration for charging the booster capacitor using source-secondary current from an input voltage supply instead of or in addition to the voltage stored on the doubler capacitor. | 2019-06-20 |
20190190375 | ELECTRONIC DEVICE WITH AN OUTPUT VOLTAGE BOOSTER MECHANISM - An electronic device includes: a clock booster configured to generate a boosted intermediate voltage greater than a source voltage, wherein the clock booster includes: a controller capacitor configured to store energy for providing a gate signal, wherein the gate signal is for controlling charging operations to generate the boosted intermediate voltage based on the source voltage, and a booster capacitor configured to store energy according to the gate signal for providing the boosted intermediate voltage, wherein the booster capacitor has greater capacitance level than the controller capacitor; and a secondary booster operatively coupled to the clock booster, the secondary booster configured to generate an output voltage based on the boosted intermediate voltage, wherein the output voltage is greater than both the source voltage and the boosted intermediate voltage. | 2019-06-20 |
20190190376 | HIGH-EFFICIENCY SWITCHED-CAPACITOR POWER SUPPLIES AND METHODS - Switched capacitor (SC) converters with excellent voltage regulation, high conversion efficiency, and good suitability fora wide range of applications are provided. An SC converter can include at least two SC sub-circuits, and at least one of these SC sub-circuits can be of variable gain. One SC sub-circuit can convert the input voltage of the SC converter to an output voltage close to the desired output voltage value for the SC converter, and another SC sub-circuit having variable gain can convert the input voltage to an output voltage with a high resolution of small discrete voltage steps. | 2019-06-20 |
20190190377 | Voltage Regulation with Frequency Control - Methods and apparatuses can implement voltage regulation with frequency control. In an example aspect, a voltage generator includes an output node and a switch. A voltage controller is coupled to the switch of the voltage generator. A mode controller is coupled to the voltage controller. The voltage controller is configured to control an output voltage at the output node by closing and opening the switch at a switching frequency. The voltage controller is configured to operate in multiple operational modes. The mode controller is configured to cause the voltage controller to shift between two or more operational modes responsive to the switching frequency. The switching frequency can be moved out of a rejection frequency band by shifting operational modes. Shifting can include, for example, shifting from a PFM mode to a PWM mode or shifting from one hysteresis mode to another hysteresis mode within the PFM mode. | 2019-06-20 |
20190190378 | ARRANGEMENT AND METHOD FOR DELIVERING A CURRENT-CONTROLLED VOLTAGE - An arrangement involving printed conductive traces, the arrangement including at least a voltage source (V | 2019-06-20 |
20190190379 | SWITCH-MODE POWER SUPPLY OUTPUT COMPENSATION - A switch-mode power supply includes a drive transistor, an inductor, and a compensation network. The drive transistor includes a drive transistor current output terminal. The inductor includes an inductor input terminal and an inductor output terminal. The inductor input terminal is coupled to the drive transistor current output terminal. The compensation network is disposed across the inductor. The compensation network is configured to detect voltage drop across the inductor, and to conduct a current from the inductor output terminal to the drive transistor current output terminal. | 2019-06-20 |
20190190381 | SMPS and Control Process of a SMPS - A method includes switching a switching circuit of the switched-mode power supply in a synchronous mode by turning on and off switches of the switching circuit in synchrony with a clock signal, wherein the switching circuit is coupled to an inductive element, and wherein the synchronous mode comprises a charging phase and a discharging phase; switching the switching circuit in an asynchronous mode by turning on and off switches of the switching circuit without being synchronized with the clock signal, wherein the asynchronous mode comprises a charging phase and a discharging phase; charging the inductive element during the charging phase of the synchronous mode; discharging the inductive element during the discharging phase of the synchronous mode; charging the inductive element during the charging phase of the asynchronous mode; and discharging the inductive element during the discharging phase of the asynchronous mode. | 2019-06-20 |
20190190382 | INDUCTORLESS DC TO DC CONVERTERS - An inductorless DC to DC converter comprises an input for connection to a DC supply and an output for connection to a DC load. A first capacitor is connected across one of the input and the output. A plurality of second capacitors are connected in series across the other of the input and the output. The first capacitor and the second capacitors are of equal capacitance. A plurality of switch circuits are provided, one for each second capacitor. Each switch circuit is connected across the first capacitor and one of the second capacitors. A control circuit controls operation of the plurality of switch circuits to momentarily place each second capacitor alternately across the first capacitor to transfer voltage therebetween to selectively step-down or step-up voltage of the DC supply to the DC load. | 2019-06-20 |
20190190383 | INDUCTORLESS DC TO DC CONVERTERS - An inductorless DC to DC converter comprises an input for connection to a DC supply and an output for connection to a DC load. A first capacitor is connected across one of the input and the output. A plurality of second capacitors are connected in series across the other of the input and the output. The first capacitor and the second capacitors are of equal capacitance. A plurality of switch circuits are provided, one for each second capacitor. Each switch circuit is connected across the first capacitor and one of the second capacitors. A control circuit controls operation of the plurality of switch circuits to momentarily place each second capacitor alternately across the first capacitor to transfer voltage therebetween to selectively step-down or step-up voltage of the DC supply to the DC load. | 2019-06-20 |
20190190384 | APPARATUSES AND METHODS FOR A LOAD CURRENT CONTROL CIRCUIT FOR A SOURCE FOLLOWER VOLTAGE REGULATOR - According to one embodiment of this disclosure, an apparatus is disclosed. The apparatus includes a voltage regulator configured to produce a regulated voltage, a plurality of current circuits coupled in parallel between an output node and a power node, each of the plurality of current circuits including first and second transistors coupled in series, the first transistor of each of the plurality of current circuits being biased with the regulated voltage, and a control circuit configured to activate the second transistor of selected one or ones of the plurality of current circuits responsive, at least in part, to a voltage at the output node. | 2019-06-20 |
20190190385 | ELECTRONIC CONVERTER - An electronic converter ( | 2019-06-20 |
20190190386 | MULTI-PHASE POWER REGULATOR - A circuit for a multi-phase power regulator including a power stage with a first phase and a second phase, the circuit including phase management circuitry coupled to the first phase and the second phase to control the first phase and the second phase, a first comparator coupled to an output of the multi-phase power regulator to compare a value of the output of the multi-phase power regulator to a first threshold value to produce a first comparison result, and phase shedding circuitry coupled to the first comparator and the phase management circuitry to control the phase management circuitry to activate or deactivate the second phase based at least partially on the first comparison result. | 2019-06-20 |
20190190387 | Peak Current Detection in a Power Converter - A power converter which converts electrical power at an input voltage into electrical power at an output voltage is presented. It has a power stage with a high side switching element, a low side switching element and an inductor. The power converter has a voltage-to-current converter coupled to the power stage to convert a a-voltage indicative of a a-current flowing into the inductor into an indicator current. A peak current detector receives the indicator current at an input node, to determine a pedestal component of the indicator current in a first time interval during which the high side switching element is open, and to generate a calibrated indicator current by subtracting the pedestal component from the indicator current. The peak current detector compares the calibrated indicator current with a threshold value for detecting a more precise peak current flowing into the inductor, taking into account the effects of temperature or circuit aging. | 2019-06-20 |
20190190388 | SWITCHING POWER SUPPLY DEVICE AND SEMICONDUCTOR DEVICE - A switching power supply circuit includes an intermittent oscillation control circuit, which performs intermittent oscillation control that repeats a cycle including an oscillation time period and a stop time period according to a feedback signal so that output voltage or current becomes constant, compares an intermittent oscillation period that is a sum of the oscillation time period and the stop time period with a preset target period, sets the oscillation time period of current cycle to a length obtained by extending the oscillation time period of previous cycle by first predetermined time when the intermittent oscillation period is shorter than the target period, and sets the oscillation time period of current cycle to a length obtained by subtracting second predetermined time from the oscillation time period of previous cycle when the intermittent oscillation period is longer than the target period, in each cycle of intermittent oscillation control. | 2019-06-20 |
20190190389 | CURRENT CONTROL CIRCUIT - A current control circuit having a current regulation element, a first control circuit, and a second control circuit. The first control circuit is arranged to regulate, based on a reference current, a current flowing with respect to the current regulation element. The second control circuit is arranged to regulate, based on a reference voltage, a voltage across the current regulation element. | 2019-06-20 |
20190190390 | POWER ELECTRONIC MODULE FOR A CHARGING STATION AND CORRESPONDING CHARGING STATION AND ELECTRICITY CHARGING STATION - A power electronic module ( | 2019-06-20 |
20190190391 | SWITCHING POWER SUPPLY DEVICE AND SEMICONDUCTOR DEVICE - A switching power supply device has both a turn-on timing modulation function and a turn-off timing modulation function, performs the turn-off timing modulation in a PFM control region and the turn-on timing modulation in a PWM control region, and further continues at least one of the modulations even after the PFM control and the PWM control are switched from one to the other, to achieve a stable operation of the switching power supply device at the control switching boundary without significantly decreasing the modulation effect of frequency jitter control. | 2019-06-20 |
20190190392 | PARTIAL POWER CONVERTER (PPC) IN AN ELECTRICAL ENERGY SYSTEM - A partial power converter (PPC) in an electrical power system, comprising an input capacitor connected in parallel to a power source v | 2019-06-20 |
20190190393 | DC-DC CONVERTER - A direct current to direct current (DC-DC) converter includes a k-th order converter including a reactor, multiple semiconductor switching elements, and multiple capacitors respectively connected in parallel with the semiconductor switching elements (k is a natural number equal to or below N and N is a natural number equal to or above 3), a transformer having a primary winding through an N-th order winding, and a controller that controls switching of a primary converter through an N-th order converter. | 2019-06-20 |
20190190394 | Very High Efficiency Soft Switching Converter AKA the Adjud Converter - In this invention we introduce the concept of a soft switching half bridge switching cell wherein the soft switching is guaranteed by the magnetizing current. Further this soft switching half bridge cell contains at least two synchronous rectifiers in the secondary which are conducting together during the dead time of the primary switchers creating a short circuit across the secondary windings, trapping the magnetizing current and release the magnetizing current to discharge the parasitic capacitances across the primary switchers when the synchronous rectifiers turn off. The secondary windings are connected to a synchronized and controlled current source. The current demanded by the current source is shaped in such way that the current becomes zero before the synchronized rectifiers turn off, allowing the magnetizing current to discharge the parasitic capacitances of the primary switching elements in a monotonic way and create zero voltage switching conditions for the primary switchers and further charge in a monotonic way the parasitic capacitances of the secondary synchronous rectifiers without ringing and spikes. By shaping the current of the synchronized current source to reach zero before the secondary synchronous rectifiers turn off, soft switching is maintained in the half bridge cell under all line and load conditions. | 2019-06-20 |
20190190395 | Power Supply Control - A power supply control apparatus comprising a controller, a load current monitor and power connection circuitry operable by the controller for controlling power supply from a power source to a load. The controller is to operate to receive an identification number from a load and to use the identification number to retrieve a set of stored reference electrical parameters of the load from a set of databases, to measure operational electrical parameters of the load, to compare measured electrical parameters with the reference electrical parameters, and to determine whether the load is fit for power supply with reference to outcome of comparison between the measured electrical parameters and the reference electrical parameters. | 2019-06-20 |
20190190396 | POWER CONVERTER, POWER CONVERSION METHOD AND LIGHTING APPARATUS - A power converter comprising a first capacitor, a flyback conversion module, a soft-start module, and a feedback control module. The flyback conversion module is coupled with the first capacitor and configured to receive a first control voltage across the first capacitor. The soft-start module is coupled with the first capacitor and is configured to charge the first capacitor during a startup stage, to increase the first control voltage to an expected voltage value at the end of the startup stage. The feedback control module is coupled with the flyback conversion module and is configured to control the flyback conversion module to output a substantially constant voltage or current after the startup stage. Wherein the expected voltage value is a value of the first control voltage when the flyback conversion module outputs a substantially constant voltage or current after the startup stage. | 2019-06-20 |
20190190397 | TWO STAGE CONTROL OF CONVERTER SYSTEM WITH FLOATING CELLS - A method for controlling a converter system includes: determining, with a first controller stage, an output voltage reference for the converter system; generating, with the first controller stage, switching commands for a main converter based on the output voltage reference, such that the main converter converts an input voltage into an intermediate voltage provided at an output of the main converter and following the output voltage reference; and generating, with a second controller stage, switching commands for a floating converter cell connected to the output of the main converter, such that the floating converter cell converts the intermediate voltage into an output voltage provided at an output of the floating converter cell, wherein the floating converter cell comprises a cell capacitor and a semiconductor switch arrangement for connecting and disconnecting the cell capacitor between the output of the main converter and the output of the floating converter cell. | 2019-06-20 |
20190190398 | SWITCHING POWER SUPPLY DEVICE AND SEMICONDUCTOR DEVICE - A switching power supply device includes: a rectifier circuit to which an AC input voltage is input; an input smoothing circuit smoothing a DC input voltage output from the rectifier circuit; a power converter circuit converting the DC input voltage and outputs an output voltage; an overvoltage detection circuit generating an input overvoltage detection signal which is activated when the DC input voltage is higher than a first reference voltage level; and a discharge circuit discharging stored charge stored in the input smoothing circuit. The power converter circuit includes a switching element. Switching of the switching element is stopped and discharging of the stored charge is started, with activation of the input overvoltage detection signal serving as a trigger, and when the input overvoltage detection signal is subsequently inactivated, the discharging is stopped and the switching of the switching element is resumed. | 2019-06-20 |
20190190399 | MODULE FOR CONTROLLING THE INTERNAL ENERGY OF A CONVERTER - The invention relates to a modular multilevel converter ( | 2019-06-20 |
20190190400 | POWER CONVERSION SYSTEM AND METHOD - Systems and methods for operating a power conversion system that includes a sole DC/DC converter are described. The systems and methods reduce a total number of DC/DC converters in a power system that includes an electric energy storage device and a photovoltaic array. The system and method provide for transferring electrical charge from the photovoltaic array and the electric energy storage device to an alternating current stationary electrical grid via a DC bus and an inverter. | 2019-06-20 |
20190190401 | ISOLATED INVERTERS - An isolated bus inverter system including inverter circuits and a controller. The inverter circuits include a switching array to provide a polyphase alternating current (AC) signal to an output. Each of the inverter circuits includes an energy source isolated from the other inverter circuits of the inverter circuits or a reference isolated from the other inverter circuits of the inverter circuits. The controller is configured to generate timing signals for the inverter circuits to generate the AC signals for the output based on DC signals received from one or more rectifier circuits. | 2019-06-20 |
20190190402 | POWER CONVERTER FOR CONVERTING DC POWER TO AC POWER WITH ADAPTIVE CONTROL ON CHARACTERISTICS OF LOAD - A power converter is provided with an inverter unit for converting DC power from a DC power supply into AC power, and a control unit that generates a control signal for controlling the inverter unit. The control unit includes an impedance estimation unit that injects a disturbance signal into a load and derives an estimated value of an impedance of the load based on a voltage signal from the load into which the disturbance signal is injected, the impedance compensator unit whose control parameters are set based on the estimated value of the impedance, and that corrects an output current signal in accordance with the control parameters, a command value unit that outputs a command value indicating a control target value, and a control compensator unit that generates a control signal, based on the command value from the command value unit and the current signal from the impedance compensator unit. | 2019-06-20 |
20190190403 | SYSTEM-CONNECTED INVERTER DEVICE AND METHOD FOR OPERATING SAME - According to an embodiment of the invention, a system-connected inverter device that includes a three-level inverter, a voltage sensor, and a controller is provided. The three-level inverter includes multiple switching elements, is connected to an electric power system of alternating current and a direct current power supply, converts direct current power supplied from the direct current power supply from direct current power into alternating current power by an ON/OFF of the multiple switching elements, and supplies the alternating current power to the electric power system. The voltage sensor detects an alternating current voltage of the electric power system. The controller detects an instantaneous voltage drop of the electric power system based on a detection result of the voltage sensor, and controls the converting by the three-level inverter from the direct current power into the alternating current power by controlling operations of the multiple switching elements using a unipolar modulation method in a state in which the instantaneous voltage drop is not detected and by controlling the operations of the multiple switching elements using a dipolar modulation method in a state in which the instantaneous voltage drop is detected. | 2019-06-20 |
20190190404 | PIEZOELECTRIC ENERGY HARVESTING USING A NONLINEAR BUCKLED BEAM AND METHOD FOR SAME - An energy harvester includes a frame having a base, a first side member affixed to the base, and a second side member affixed to the base and spaced apart from the first side member. A beam is coupled between the first side member of the frame and the second side member of the frame. The beam has a substrate layer with a first end affixed to the first side member of the frame, a second end affixed to the second side member of the frame, a first face, and a second face opposite to the first face. The substrate is elastically deformable in response to the vibratory force. The beam further includes a first piezoelectric layer joined to the first face of the substrate layer and having a terminal for electrical connection to a load, the first piezoelectric layer comprising at least one piezoelectric patch. | 2019-06-20 |
20190190405 | POWER GENERATING ELEMENT - A power generating element according to the present invention includes: a support frame formed in a frame shape in plan view; a vibrating body provided inside the support frame; a first bridge portion and a second bridge portion that supports the vibrating body on the support frame; and a charge generating element to generate a charge at the time of displacement of the vibrating body. The support frame includes a first frame portion arranged on a first side with respect to the vibrating body and includes a second frame portion arranged on a second side opposite to the first side with respect to the vibrating body. The first bridge portion couples the vibrating body with the first frame portion. The second bridge portion couples the vibrating body with the second frame portion. | 2019-06-20 |
20190190406 | MOTOR STARTER, OPERATING METHOD, COMPUTER PROGRAM PRODUCT AND MOTOR STARTER ARRANGEMENT - A motor starter for operating an electric motor connected to a multiphase power supply includes a semiconductor switch arranged in a current-carrying phase of the multiphase power supply, and an electromechanical switch arranged in parallel relation to the semiconductor switch in the current-carrying phase. The electromechanical switch includes a movable switching piece configured tiltable to reduce a current gradient in the semiconductor switch. | 2019-06-20 |
20190190407 | SOFT STARTER, OPERATING METHOD, AND SWITCHING SYSTEM - The invention relates to a soft starter ( | 2019-06-20 |
20190190408 | ELECTRIC SPEED CONTROLLER, FLIGHT CONTROLLER, AND CONTROL METHOD AND CONTROL SYSTEM OF UNMANNED AERIAL VEHICLE - A method for controlling an electric speed controller includes receiving an addressing instruction from a flight controller. The addressing instruction is used for addressing the electric speed controller with a target addressing number. The method further includes determining whether a throttle characteristic signal is received, and, if the throttle characteristic signal is received, sending a feedback signal for responding to the addressing instruction and recording the target addressing number according to the addressing instruction. | 2019-06-20 |
20190190409 | MOTOR DRIVER - A motor driver drives a motor by receiving a power supply from a direct current power source, and includes a half-bridge circuit, a smoothing capacitor, a power supply circuit, a current adjuster circuit, and a control circuit. The half-bridge circuit and the smoothing capacitor are connected at positions between a power supply line and a ground line. The current adjuster circuit adjusts a current supply amount to the power supply circuit. The control circuit controls the half-bridge circuit and the current adjuster circuit. The control circuit controls the current adjuster circuit based on an operating state of the half-bridge circuit. | 2019-06-20 |
20190190410 | MOTOR DRIVING CONTROL DEVICE AND MOTOR CONTROL METHOD - A motor driving control device has a motor driving unit that has a plurality of switching elements and supplies a drive current to three-phase coils of a motor, a control circuit unit for sequentially switching energization patterns of the three-phase coils by outputting a drive control signal for operating the plurality of switching elements to the motor driving unit, and a current detection circuit for detecting a voltage value corresponding to a magnitude of the drive current. the control circuit unit includes a voltage comparison unit for comparing the magnitude of the drive current with a predetermined current threshold value based on the voltage value each time switching of the energization patterns is performed, and a disconnection determination unit for determining whether any one phase of the motor is in a disconnection state, based on a comparison result of the voltage comparison unit for the plurality of energization patterns. | 2019-06-20 |
20190190411 | SHIFT RANGE CONTROL DEVICE - A shift range control device, mounted on a vehicle for switching a shift range by controlling a driving operation of a motor, includes: feedback controller; a feedback value setting unit; a current sensor; and a current correction unit. The feedback controller performs a feedback control based on an actual angle of the motor and a motor speed as a rotational speed of the motor. The feedback value setting unit sets a feedback value of the motor speed to advance a phase of the motor speed, based on the motor speed. The current sensor detects a motor current which flows through the motor. The current correction unit estimates a temperature of the motor based on the motor current, and corrects a target motor speed which is a target speed of the motor determined based on a request shift range. | 2019-06-20 |
20190190412 | ACTUATOR AND POSITION CONTROL APPARATUS USING VOICE COIL MOTOR METHOD WITH TEMPERATURE COMPENSATION FUNCTION - A actuator using a voice coil motor (VCM) method includes a coil configured to face a magnetic member disposed on a lateral surface of a lens carrier, and be spaced apart from the magnetic member, a driving circuit configured to supply a composite current including a driving current and a position detection current to the coil based on a composite voltage input to the driving circuit, and an impedance/digital conversion circuit configured to convert an alternating current (AC) voltage signal including a specific frequency component acquired at opposite ends of the coil via a demodulation scheme, extract a low-frequency signal having an inductance component of the coil, and detect a position signal based on the low-frequency signal. | 2019-06-20 |
20190190413 | MOTOR AND WASHING MACHINE HAVING THE SAME - Provided is a washing machine including: a stator including a coil; a rotor including a plurality of variable magnets each having a magnetic force variable, and rotatable with respect to the stator; a controller configured to control an energizing of the coil to increase or decrease a magnetic force of the variable magnet; and a plurality of position sensors each having a output voltage changed according to a magnetic flux of the variable magnet. | 2019-06-20 |
20190190414 | METHOD FOR CONTROLLING AN ELECTRIC MOTOR INCLUDING AN IDENTIFICATION SEQUENCE OF A TRANSFORMER - A method for controlling an electric motor, implemented in a variable speed drive, the variable speed drive being connected to the electric motor through a transformer, the method including; executing an identification sequence of the transformer for determining gain data corresponding to an inverse function of a transfer function of the transformer; generating a transfer module based on said determined gain data; determining a start-up sequence of the electric motor to be implemented by the variable speed drive by executing the transfer module on a reference current path. | 2019-06-20 |
20190190415 | MOTOR DRIVING CONTROL DEVICE AND MOTOR DRIVING CONTROL METHOD - A rotational stop position of a motor is accurately controlled. A motor driving control device ( | 2019-06-20 |
20190190416 | MOTOR CONTROL METHOD AND SYSTEM - A motor control method and system are provided. The method includes calculating a measured value of a revolution per minute (RPM) of a motor based on a signal measured by a hall sensor installed in the motor and applying a motor system load model to calculate a predicted value of the RPM of the motor. Further, noise of a hall sensor signal is detected using the measured value of the RPM of the motor and the predicted value of the RPM of the motor. | 2019-06-20 |
20190190417 | MOTOR CONTROL DEVICE AND STEP-OUT STATE DETECTION METHOD - In order to prevent erroneous detection of motor step-out even when the rotational speed of the motor crosses a resonance region of the motor under acceleration and/or deceleration, a motor control device ( | 2019-06-20 |
20190190418 | PRINTED CIRCUIT BOARD BASED EXCITER - In one embodiment, a generator includes a rotor configured to rotate in cooperation with a stator to generate electrical power. An exciter of the generator includes at least one circuit board, a stationary exciter stator, and a control circuit. The circuit board is mechanically coupled to a rotor of the generator and includes at least one coil of an electrical conductor. The stationary exciter stator is configured to induce a current in the at least one coil of the at least one circuit board. The control circuit is configured to modify the current from the at least one coil and provide the modified current to a field of the generator. | 2019-06-20 |
20190190419 | PORTABLE POWER GENERATOR WITH POWER MONITOR AND CONTROL - A portable power generator with power monitor and control. The portable generator may include an alternator powered by an engine and configured to generate an alternator output, a first output receptacle coupled to the alternator output through a first switch, and a second output receptacle coupled to the alternator output through a second switch. The portable generator may further include a sensor unit configured to detect at least one output parameter of the first output receptacle. An electronic processor of the portable generator may be configured to receive first sensor signals indicating a measured quantity of the at least one output parameter of the first output receptacle and determine that the measured quantity exceeds a predetermined threshold. The processor may also be configured to disable the first output receptacle in response to determining that the measured quantity exceeds the predetermined threshold. | 2019-06-20 |
20190190420 | INSTALLATION AND METHOD FOR GENERATING A THREE-PHASE AC VOLTAGE TO BE FED INTO A POWER SUPPLY SYSTEM - An installation for generating a three-phase AC voltage to be fed into a power supply system, having a transformer connected to a three-phase generator on the output side to convert a first three-phase AC voltage into a second three-phase AC voltage having a second voltage level, which is lower than a first voltage level and a first frequency, and having a frequency converter connected to the transformer on the output side to supply a rotor winding with a third three-phase AC voltage to convert the second three-phase AC voltage into the third three-phase AC voltage having the second voltage level and a second frequency which is lower than the first frequency, wherein the frequency converter is designed such that the second frequency corresponds to a difference between a mains frequency of the power supply system and the first frequency. | 2019-06-20 |
20190190421 | INVERTER CONTROL DEVICE AND DRIVE SYSTEM - A device according to an embodiment including a command generator that generates a current command value; a detector that detects a current value to be outputted from an inverter to an motor; a generator that generates a gate command to the inverter, and obtains an output voltage target vector of the inverter based on the gate command; an estimator that obtains a rotary phase angle estimated value of the motor based on the detected current value and the output voltage target vector; and a polarity determination part that, with supply of a current in synchronism with a rotor frequency of the motor, performs determination of a magnet magnetic pole using a generated magnetic flux or voltage in synchronism with the generated rotor frequency or both of them, and outputs a correction value for the rotary phase angle estimated value based on a result of the determination. | 2019-06-20 |
20190190422 | MOTOR CONTROL METHOD, MOTOR DRIVE SYSTEM, AND ELECTRIC POWER STEERING SYSTEM - A motor control method includes acquiring three current values of three-phase currents flowing through a motor, the three current values being detected by three current sensors, and two rotor angles of the motor, the two rotor angles being detected by two position sensors; performing six ways of calculation using two of the three current values and one of the two rotor angles; identifying at least one failed sensor from among the current sensors as well as the position sensors, using a table showing a relationship between a failed sensor and a pattern of a result of each of the six ways of calculation; selecting, as a normal sensor, a sensor different from the at least one failed sensor identified; and controlling the motor using the normal sensor selected. | 2019-06-20 |
20190190423 | CONTROL DEVICE OF POWER CONVERSION DEVICE - A control device of a power conversion device for driving a motor includes a current detector and an angle detector. The control devices also includes a motor controller that acquires an electric current and an angle from the respective detectors in a first cycle and drives the motor via the power conversion device, and a toque monitor that acquires the electric current and the angle from the respective detectors in a second cycle and estimates an output torque for determining abnormalities in the motor control. The control device prioritizes acquisition requests for the current and angle from the motor controller and the torque monitor. The torque monitor acquires the current and angle at least twice in the second cycle to acquire a current and angle that are detected at the same time by the detectors. | 2019-06-20 |
20190190424 | Apparatus and Method For Sensorless Detection of Load Torque of a Stepper Motor and for Optimizing Drive Current for Efficient Operation - A method for controlling the drive current in a stepper motor includes measuring stepper motor current, computing a load angle of the stepper motor, calculating a torque ratio of the stepper motor, generating a reference current as a function of the torque ratio and a maximum current setting for the stepper motor, and setting the drive current of the stepper motor as a function of the reference current. | 2019-06-20 |
20190190425 | SYSTEM AND METHOD FOR HEALTH MONITORING OF PRIME MOVER COUPLED TO DOUBLY-FED INDUCTION GENERATOR - A system for health monitoring of a prime mover coupled to a doubly-fed induction generator is disclosed. The DFIG includes a generator having a rotor winding and a stator winding. The system includes first sensors coupled to the stator winding to generate three-phase stator current signals, and second sensors coupled to the rotor winding to generate three-phase rotor current signals. Furthermore, the system includes a signal processor operably coupled to the first sensors and the second sensors and configured to determine a torque profile of the prime mover based on the three-phase stator current signals and the three-phase rotor current signals. Moreover, the signal processor is configured to detect an anomaly associated with the prime mover if the determined torque profile is abnormal. | 2019-06-20 |
20190190426 | METHOD AND DEVICE FOR REDUCING MECHANICAL LOADS IN A POWERTRAIN - The invention relates to a method ( | 2019-06-20 |
20190190427 | METHOD AND SYSTEM FOR CONTROLLING MOTOR FOR VEHICLE - A method and a system for controlling a motor for a vehicle are provided. The vehicle is capable of being continuously driven by controlling the motor based on position information of a rotor derived using a sensorless estimation algorithm in the event of a failure of a position sensor of a motor rotor while the vehicle is being driven. | 2019-06-20 |
20190190428 | POWER FACTOR CORRECTION CAPACITOR WEAR DETECTION - A system and method is provided to monitor wear on a power factor correction capacitor in a motor system. The system and method obtains a baseline inductance angle, reactive power or power factor corresponding to a baseline power factor correction by the capacitor in the circuit; monitors a current supplied to the motor at a location upstream of the capacitor; monitors a voltage supplied to the motor, and determines a present inductance angle, reactive power or power factor based on the monitored current and voltage. The present inductance angle, reactive power or power factor corresponds to a present power factor correction by the capacitor. The system and method can then determine when the power factor correction of the capacitor has degraded to an unsatisfactory level based on a change in the inductance angle, reactive power or power factor from the baseline values, and take appropriate action | 2019-06-20 |
20190190429 | PHASE CONTROL OF DC BUS IN APPLIANCES - A control system of an appliance having a motor is provided. The control system includes an inverter circuit configured to provide power to the motor. The inverter circuit has a direct-current (DC) bus. The control system further includes a controller device powered by the DC bus, and a phase fired control device operatively coupled to an input of the inverter circuit. Also, the phase fired control device is configured to control a magnitude of voltage applied to the DC bus based on a phase on angle of the phase fired control device. | 2019-06-20 |
20190190430 | METHOD OF CONTROLLING ELECTRIC OIL PUMP - A method of controlling an electric oil pump driven by a motor, may include changing, by a controller, a frequency of a current applied to the motor with a predetermined control cycle to control RPM of the motor to instantaneously change into a different value according to a frequency change. | 2019-06-20 |
20190190431 | MOTOR CONTROL UNIT - A motor control unit includes a PWM count calculator, a PWM count setter, and a PWM count changer. The PWM count calculator calculates first PWM counts of phases. Each first PWM count is calculated for a current control period. The PWM count setter sets the first PWM count of each phase as a second PWM count of a corresponding phase. The second PWM count is set for each of PWM periods included in the current control period. The PWM count changer changes the second PWM count of at least one of the phases, without changing the total of the second PWM counts of the at least one phase within the current control period, such that the number of times switching elements corresponding to the at least one phase are switched within the current control period is reduced. | 2019-06-20 |
20190190432 | ELECTRIC POWER CONTROL UNIT - An electric power control unit configured to control drive power of a three-phase alternating current to be supplied to an electric motor may include: an inverter configured to convert a direct current to the three-phase alternating current; first and second current sensors, each of which is configured to measure a first-phase current in the three-phase alternating current; third and fourth current sensors, each of which is configured to measure a second-phase current in the three-phase alternating current; and a controller configured to control the inverter, and under a condition in which the first current sensor fails, when measured values of the second, the third, and the fourth current sensors do not coincide with each other while the inverter is shut down, the controller may stop to further supply the drive power to the electric motor. | 2019-06-20 |
20190190433 | METHOD AND DEVICE FOR EXTERNAL MONITORING OF POWER ELECTRONICS - The invention relates to a method ( | 2019-06-20 |
20190190434 | MOTOR APPARATUS AND MOTOR SYSTEM - A motor apparatus includes a motor body, a circuit board, a driver, and a voice detector. The circuit board, which is connected to the motor body, supplies driving electric power to the motor body. The driver, which is mounted on the circuit board, converts power source electric power to the driving electric power. The voice detector, which is mounted on the circuit board, detects a voice. | 2019-06-20 |
20190190435 | MOTOR DRIVER AND MOTOR DRIVING SYSTEM - To provide a motor driver and a motor driving system which allow a reduction in power consumption of a heat exchanger provided in a power magnetics cabinet while keeping down manufacturing cost. A motor driver is accommodated in a power magnetics cabinet and drives a motor. The motor driver comprises: a storage unit that stores the quantity of heat generated independently of the value of a current I[Arms] caused to flow in the motor as a generated heat quantity a[W]; a current detection unit that detects the value of the current I[Arms] caused to flow in the motor; and a heat quantity calculation unit that calculates the quantity of heat P[W] released to the interior of the power magnetics cabinet by adding the heat quantity a[W] stored in the storage unit and a heat quantity q×K[W/Arms]×I[Arms] responsive to the value I[Arms] detected by the current detection unit. | 2019-06-20 |
20190190436 | ADAPTER KIT FOR A BATTERY POWERED ROTARY TOOL, A ROTARY TOOL, AND A ROTARY SWAB - An adapter kit for a battery powered rotary tool having a housing extender coaxially affixable to an end of the rotary tool tubular housing, a rechargeable battery, a motor driver circuit, mounted with a microprocessor coupled to a solid-state switch circuit which connects the motor of the rotary tool to the battery; and a user interface mounted to the housing extender having a user input and at least one indicator light. The microprocessor is configured to, in response to a user providing a signal via the user input, provide a signal to the solid-state switch circuit sending a power input to the motor so it can be switched between at least the following modes of motor operation: forward rotation, reverse rotation, an alternating forward-reverse pulsation, and OFF. A rotary tool having the above functions is also disclosed as well as a rotary swab for use therewith. | 2019-06-20 |
20190190437 | SOLAR CELL PANEL SECURING STRUCTURE AND SECURING UNIT - In a securing unit including first frames for holding the end sides of a solar cell and a securing tool, the securing tool includes a base member that is secured to an installation face, a stand that is erected from the base member, a shaft that has an external thread and is held by the stand in a state in which a movement in the axial direction is restricted, and a holder that holds the first frame by inserting a lateral side extended portion into a slit of the first frame and moves up and down relatively to the stand by screwing internal threads formed in the holder together with the external thread of the shaft. | 2019-06-20 |
20190190438 | Integrated photovoltaic window and light source - Implementations of the disclosed subject matter provide a window, an energy and light producing device including at least one transparent photovoltaic device and at least one non-transparent Organic Light Emitting Device (OLED) in an optical path of the window. A controller may control the operation of the non-transparent OLED of the energy and light producing device. An energy storage device may be electrically coupled to the controller and the energy and light producing device to store energy generated by the transparent photovoltaic device and to power the non-transparent OLED. In some implementations, a LED or OLED may be mounted in the frame of the window and may be powered by the energy storage device. | 2019-06-20 |
20190190439 | TILTING SOLAR PANELS FOR HIGH ALTITUDE BALLOONS - A stratospheric balloon may include an upper structure having a pulley, a lower structure, at least one solar panel suspended between the upper structure and the lower structure, and a first orientation control member connected, at a first end thereof, to a first transverse edge of the at least one solar panel and, at a second end thereof, to a second transverse edge of the at least one solar panel. The first orientation control member is wound about the pulley such that rotating the pulley changes the orientation of the at least one solar panel relative to the upper structure and the lower structure. In another example, the pulley may be replaced by first and second support mechanisms and the system may include a second orientation control member. The first and second orientation control members are connected to the first and second support mechanisms, respectively, and to the solar panel. | 2019-06-20 |
20190190440 | SYSTEMS AND METHODS FOR IMPROVING LIGHT COLLECTION OF PHOTOVOLTAIC PANELS - Systems and methods for structures that support bifacial photovoltaic panels are presented. A system comprising a support structure mounted to an underside of bifacial photovoltaic panels arranged in a row is provided herein. The support structure comprises one or more elongated structural members extending along and in a direction parallel to the row. The support structure further comprises one or more pivot arms that rotate about an axle at a top of the support structure. The one or more pivot arms are positioned in a perpendicular direction to the one or more elongated structural members. The one or more pivot arms connected to the one or more elongated structural members. The one or more structural elements of the support structure have a reflective outer surface to increase reflected light to the underside of the bifacial photovoltaic panels. | 2019-06-20 |
20190190441 | Dual Axis Solar Tracking System - Solar tracking assemblies and methods for tracking the movement of the Sun are described herein. The dual axis solar tracking system generally includes a foundation, a primary layer, a secondary layer, and at least one motor that controls a first and second actuator. The foundation is designed to uniformly distribute the weight of the solar tracking assembly in the absence of additional securing or structural supports. The primary layer is adapted to rotate relative to a primary axis. The secondary layer is adapted to rotate relative to a secondary axis. The secondary layer is adapted for attachment of a payload thereto which may absorb the Sun's energy. | 2019-06-20 |
20190190442 | Solar Tracker - The present invention concerns a solar tracker ( | 2019-06-20 |
20190190443 | ARRANGEMENTS OF A PLURALITY OF PHOTOVOLTAIC MODULES - Various embodiments are related to an arrangement of a plurality of photovoltaic modules. Each photovoltaic module has a light receiving front side and a light receiving back side. The photovoltaic modules of the plurality of photovoltaic modules are arranged in one or more rows to form photovoltaic module rows. One or more photovoltaic module rows are extended substantially in a direction of around North-South and the front sides of the photovoltaic modules of the one or more photovoltaic module rows are sloped substantially in a direction of predominantly North or South. The arrangement further has a plurality of mounting members. Each mounting member defines a space between respective two photovoltaic modules in one photovoltaic module row that are mechanically connected with the respective mounting member. Each mounting member of the plurality of mounting members has a bottom part; a long leg; and a short leg. The long leg and the short leg respectively extend upwards from an end of the bottom part. The mounting members further have a reflector configured to reflect light to the back side of at least one of the connected photovoltaic modules. | 2019-06-20 |
20190190444 | SOLAR CELL ARRAY INSPECTION SYSTEM, POWER CONDITIONER, AND SOLAR CELL ARRAY INSPECTION METHOD - A solar cell array inspection system includes a measurement part configured to measure a characteristic curve which is an I-V curve or a P-V curve of a solar cell array including a plurality of strings when a current from each of the strings is input through a blocking diode; and a determination part configured to search for an inflection point in the characteristic curve measured by the measurement part, determine whether the state of the solar cell array is an abnormal state in which at least one string has an abnormality based on the results of searching for an inflection point, and notify a user of the determination result. | 2019-06-20 |
20190190445 | DIAGNOSTIC VEHICLES FOR MAINTAINING SOLAR COLLECTOR SYSTEMS - Diagnostic vehicles, systems, and methods for characterizing a solar collector system are presented herein. The diagnostic vehicle comprises a frame, one or more sensors positioned along the frame, and a control system. The one or more sensors measure and characterize attributes of the solar collector system and/or its environment such as reflectivity of an area of ground around the solar collector system, an angular offset of a drive system of the solar collector system, and/or a degradation of structural components that support photovoltaic panels in the solar collector system. The control system is programmed to move the frame to one or more locations in the solar collector system and control the one or more sensors to acquire measurements at the one or more locations. | 2019-06-20 |
20190190446 | LOCAL OSCILLATOR DISTRIBUTION FOR A MILLIMETER WAVE SEMICONDUCTOR DEVICE - A CMOS gain element is disclosed herein. Also disclosed herein are splitters, comprising the CMOS gain element, and local oscillator distribution circuitry comprising the splitters and the CMOS gain elements. Semiconductor devices comprising the local oscillator distribution circuitry may have smaller footprints and reduced power consumption relative to prior art devices. | 2019-06-20 |
20190190447 | FAST START-UP CIRCUIT FOR LOW POWER CRYSTAL OSCILLATOR - A method and apparatus for speeding up the start-up process of a crystal oscillator. The energy required for starting oscillations is inserted to the crystal by a stimulus in the form of a time-variant voltage or current pattern, either periodic or aperiodic. The stimulus is stopped after a pre-established period, then the oscillator continues to operate in its normal mode and completes the start-up process significantly faster, compared to a start-up process not comprising the above stimulus. | 2019-06-20 |
20190190448 | Circuit Device, Oscillator, Electronic Apparatus, And Vehicle - A circuit device includes a drive circuit driving a resonator, an oscillation circuit having the resonator and a variable capacitance circuit coupled to an oscillation loop including the drive circuit, and a D/A converter circuit that performs D/A conversion on frequency control data and outputs a first voltage signal and a second voltage signal which are differential signals. The variable capacitance circuit includes a first variable capacitance capacitor, to one end of which the first voltage signal is input and, to the other end of which a first bias voltage is input and a second variable capacitance capacitor, to one end of which the second voltage signal is input and, to the other end of which a second bias voltage is input. | 2019-06-20 |
20190190449 | SEMICONDUCTOR DEVICE AND MEASUREMENT DEVICE - A semiconductor device includes an electronic component that includes an oscillator and has terminals on one face. A semiconductor chip is electrically connected to the electronic component and also includes terminals on one face thereof. The electronic component and the semiconductor chip are mounted to a mounting base such that the terminals of the electronic component and the terminals of the semiconductor chip face in the same direction. First bonding wires are connected to the terminals of the semiconductor chip, and second bonding wires having an apex height smaller than that of the first bonding wires connect the terminals of the electronic component to the terminals of the semiconductor chip. A sealing member completely seals within at least the electronic component. | 2019-06-20 |
20190190450 | Detector Circuit - A change in a detection voltage due to the temperature is suppressed. A detector circuit includes: a first rectification element having an anode to which an input signal is inputted; a second rectification element having a cathode connected with a cathode of the first rectification element and having an anode connected to an output terminal; and a current mirror circuit for supplying a current to the first rectification element, and for supplying a current-mirror current of the current to the second rectification element. | 2019-06-20 |
20190190451 | METHODS, CIRCUITS, AND APPARATUS FOR CALIBRATING AN IN-PHASE AND QUADRATURE IMBALANCE - Methods, circuits, and apparatus for calibrating an in-phase and quadrature (IQ) imbalance of a communication signal including an in-phase component and a quadrature component in a communication apparatus, the method including determining whether to calibrate the IQ imbalance of the communication signal in the communication apparatus; selecting, in response to a determination to calibrate the IQ imbalance of the communication signal, at least one of an amplitude calibration or a phase calibration; controlling, in accordance with the selected amplitude calibration or phase calibration, at least one of an in-phase delay circuit or a quadrature delay circuit to adjust a pulse of at least one of a first LO signal or a second LO signal to thereby generate at least one pulse-adjusted LO signal; and multiplying the at least one pulse-adjusted LO signal with the communication signal to thereby calibrate the IQ imbalance. | 2019-06-20 |
20190190452 | PASSIVE MIXER - A passive mixer may include an output coupled to a next stage circuit. The output may be coupled to baseband inputs via first switches. The passive mixer may further include a tunable capacitor bank. The tunable capacitor bank may be coupled via second switches to the baseband inputs. | 2019-06-20 |
20190190453 | POWER AMPLIFIER FOR MILLIMETER WAVE DEVICES - We disclose apparatus which may provide power amplification in millimeter-wave devices with reduced size and reduced power consumption, and methods of using such apparatus. One such apparatus comprises an input transformer; a first differential pair of injection transistors comprising a first transistor and a second transistor; a first back gate voltage source configured to provide a first back gate voltage to the first transistor; a second back gate voltage source configured to provide a second back gate voltage to the second transistor; a second differential pair of oscillator core transistors comprising a third transistor and a fourth transistor, wherein the third transistor and the fourth transistor are cross-coupled; a third back gate voltage source configured to provide a third back gate voltage to the third transistor; a fourth back gate voltage source configured to provide a fourth back gate voltage to the fourth transistor; and an output transformer. | 2019-06-20 |
20190190454 | AMPLIFIER CIRCUIT - An amplifier circuit includes a first transistor, a second transistor, a first pathway and a second pathway. The first transistor amplifies an external signal that is input from outside the amplifier circuit. The second transistor amplifies a detection signal that detects a level of the external signal. The first pathway is connected between a collector of the first transistor and a base of the second transistor to supply the detection signal that is output from the collector of the first transistor to the base of the second transistor. The second pathway is connected between an emitter of the first transistor and the base of the second transistor to supply a bias voltage from the emitter of the first transistor to the base of the second transistor. | 2019-06-20 |
20190190455 | TRANSMISSION UNIT - A transmission unit includes a first transistor that amplifies power of a first signal and outputs a second signal, a power supply circuit that supplies to the first transistor a power supply voltage that changes in accordance with an amplitude level of the first signal, and an attenuator that attenuates the first signal in such a manner that an amount of attenuation of the first signal increases with a decrease in the power supply voltage when the power supply voltage is less than a first level. | 2019-06-20 |
20190190456 | AMPLIFIER HAVING A SWITCHABLE CURRENT BIAS CIRCUIT - A circuit having (A) a transistor, (B) a bias circuit for providing setting a bias current for the transistor, the bias current having a current level in accordance with a reference current fed to the bias circuit; and (C) a bias current level controller, comprising: (i) a plurality of switches, each one of the switches comprises: a MOS FET and a GaN FET connected in a cascode configuration; and (ii) current source circuitry, comprising a plurality of current sources, each one of the current sources being connected between a voltage source and a corresponding one of the plurality of switches, the current source circuit combining currents produced by the current source in response a binary control signal fed to a gate of the MOS FET, the combined current providing the reference current fed to the bias circuit. | 2019-06-20 |
20190190457 | POWER AMPLIFIER CIRCUIT - A power amplifier circuit includes a first transistor having a base supplied with an RF signal and a collector supplied with a variable power supply voltage corresponding to a level of the RF signal, the first transistor being configured to amplify the RF signal, a bias circuit including a second transistor that supplies a bias current to the base of the first transistor, and a bias adjustment circuit that decreases a current to be supplied from an emitter of the second transistor as the variable power supply voltage decreases, thereby decreasing the bias current to be supplied to the base of the first transistor. | 2019-06-20 |