| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 363015000 |
Including D.C.-A.C.-D.C. converter
| 2557 |
| 363123000 |
Using semiconductor-type converter
| 1369 |
| 363074000 |
With condition responsive means to control the output voltage or current
| 694 |
| 363034000 |
Including an A.C.-D.C.-A.C. converter
| 465 |
| 363039000 |
With means to introduce or eliminate frequency components
| 335 |
| 363050000 |
Including automatic or integral protection means
| 334 |
| 363065000 |
Having plural converters for single conversion
| 215 |
| 363049000 |
With starting arrangement
| 113 |
| 363059000 |
With voltage multiplication means (i.e., V out > V in)
| 62 |
| 363141000 |
With cooling means
| 61 |
| 363064000 |
With interphase transformer
| 20 |
| 363146000 |
Encased in plug housing
| 18 |
| 363140000 |
Using impedance-type converter
| 13 |
| 363062000 |
With voltage division by storage type impedance (i.e., V out)
| 13 |
| 363144000 |
With conductive support mounting
| 12 |
| 363147000 |
Integrated circuit
| 11 |
| 363101000 |
With auxiliary bucking or boosting EMF
| 9 |
| 363142000 |
With means to connect the input to diverse power sources
| 8 |
| 363102000 |
Using dynamoelectric machine converter
| 6 |
| 363063000 |
With means to selectively provide D.C. of either polarity | 5 |
| 20090080224 | AC TO DC CONVERSION CIRCUIT - A half-wave rectifier including an input port for receiving an incoming AC signal, an output port for outputting a half-wave rectified signal, an operational amplifier including inverting and non-inverting input terminals and an output terminal, the inverting input terminal connected to a ground reference and a non-inverting input terminal coupled to a negative feedback loop and a first resistor. The negative feedback loop including a second resistor coupled between a first node and a second node, the first node coupling the output terminal and the output port and the second node coupling the non-inverting input terminal and the second resistor. A capacitor is coupled to the input port and in series with the first resistor. | 03-26-2009 |
| 20090244941 | POWER SOURCE APPARATUS AND IMAGE FORMING APPARATUS - A transformer accepts an AC voltage from an AC power source, transforms the AC voltage, and supplies the transformed AC voltage to first rectifying circuits. Similarly, another transformer accepts an AC voltage from an AC power source, transforms the AC voltage, and supplies the transformed AC voltage to second rectifying circuits. The first rectifying circuits convert the accepted AC voltage into a positive DC voltage, and the second rectifying circuits convert the accepted AC voltage to a negative DC voltage. The positive DC voltage and the negative DC voltage then are superimposed and outputted to a secondary side of a transformer in the AC circuits. The AC voltage outputted from the transformers in the AC circuits and the DC voltage formed by superimposing the positive and negative DC voltages outputted from the first and second rectifying circuits are further superimposed, and supplied to each developing section. | 10-01-2009 |
| 20100020577 | PRODUCTION OF A REAL POWER EQUILIBRIUM OF THE PHASE MODULES OF A CONVERTER - A converter has at least one phase module, an AC voltage terminal and a DC voltage terminal. A phase module branch is formed between each DC voltage terminal and each AC voltage terminal. Each phase module branch has a series circuit containing submodules which each have a capacitor, a power semiconductor, and submodule sensors for detecting energy stored in the capacitor and with a regulation device for regulating the apparatus in dependence on energy values and predetermined desired values. Therefore unbalanced loading of the energy storage units is avoided. The regulation device has a summation unit for summing the energy values while obtaining branch energy actual values and a device for calculating circuit current desired values in dependence on the branch energy actual values. The regulation device compensates for imbalances in the branch energy actual values in dependence on the circuit current desired values. | 01-28-2010 |
| 20110038187 | BIPOLAR PULSED POWER SUPPLY AND POWER SUPPLY APPARATUS HAVING PLURALITY OF BIPOLAR PULSED POWER SUPPLIES - A bipolar pulsed power supply is provided in which, while effectively restricting the rise in current at the time of arcing which directly leads to the generation of splashes and particles, the occurrence of overvoltage at the time of polarity reversal is prevented. The power supply has a bridge circuit constituted by switching elements SW | 02-17-2011 |
| 20140198545 | POWER-CONVERSION ENGINE - The disclosure provides a power converter and method for controlling same, comprising a plurality of switch elements, an inductive reactor, and at least two ports for the movement of electrical energy. Any energy-moving port may be made unipolar, bidirectional, bipolar, or bidirectionally bipolar. Ports may be equipped with sensing circuitry to allow the converter output to be controlled responsively to an input signal. The disclosure may be configured to be used in many ways, for example, as a power-supply, as an amplifier, or as a frequency converter. The disclosure may comprise energy predictive calculating means to obtain excellent transient response to line and load variations. The disclosure may also include a switch to create a low impedance path around the inductor to allow current to recirculate through the inductor when it is not needed at any of the ports. | 07-17-2014 |
| 363106000 |
By circuit interrupter type | 5 |
| 20140301121 | Tunneling Electric Contacts And Related Methods, Systems And Applications - This disclosure provides an electrical switch based on tunneling electric contacts. Electrodes of the switch are formed to have reciprocal apparent contact surfaces, each smooth such that a compressed (in contact) composite mean asperity height between these surfaces is significantly smaller than an electron tunneling length of the switch. A movement mechanism is used to physically move one or both electrodes to vary the gap between electrodes to be greater than/less than the electron tunneling length. In select embodiments, the movement mechanism is electrically actuated and is amenable to relatively high frequency operation. The nano smooth surfaces provide for a tunneling switch where current flow is not primarily dependent on contact force between electrodes, and leads to a highly conductive ON state exceeding high performance, high-contact force mechanical switches, while also being amenable to high frequency operation. | 10-09-2014 |
| 20120087166 | CAM-CONTROLLED ELECTROMECHANICAL ROTARY POWER INVERTER - The cam-controlled electromechanical rotary power inverter converts a plurality of DC source voltages to an AC power output by an electromechanical mechanism that includes a rotating assembly of cams intermittently contacting a series of brushes connected to the DC source voltages to sequentially add the DC voltages and then sequentially subtract the DC voltages over 360° of rotation of the cam assembly. In this manner, the inverter provides multilevel, e.g., seven discrete voltage levels, which are distributed as output sequentially in an additive manner and then a subtractive mariner to generate nearly sinusoidal voltages. Repeating sequences of brushes and cams over three 120° intervals allows for 3-phase AC voltage output from the inverter. | 04-12-2012 |
| 20080205105 | VOLTAGE CONVERTER - A voltage converter having an input unit, a transitional unit configured to convert an AC voltage provided by the input unit into a transitional voltage and at least one auxiliary transitional voltage, and an output unit configured to convert the transitional voltage to a DC voltage using a charge pump unit, the charge pump unit being supplied with the at least one auxiliary transitional voltage as a control signal. | 08-28-2008 |
| 20100226154 | POWER CONVERTERS - A power converter capable of improving converter's efficiency and achieving zero-voltage-switching is provided, in which a first series circuit is connected in parallel with a direct current (DC) power supply and has a first inductor, a first primary winding, first and second switching elements connected in series. A second series circuit is connected in parallel with the DC power supply and has third and fourth switching elements, a first capacitor, a second primary winding and a second inductor connected in series. A second capacitor is connected between a first node between the first primary winding and the first switching element in the first series circuit and a second node between the fourth switching element and the second primary winding in the second series circuit. A third node between the first and second switching elements is connected to a fourth node within the second series circuit. | 09-09-2010 |
| 20140119082 | ISOLATED DIGITAL TRANSMISSION WITH IMPROVED EMI IMMUNITY - Embodiments of the present invention may provide a circuit. The circuit may include a primary side, a secondary side, and an isolated energy transfer device electrically isolating the primary side and the secondary side. The primary side may include a first energy storage device coupled to a power source, a control system coupled to the first energy storage device for power, a second energy storage device, and a coupling system, coupled to the control system, to selectively couple the second energy storage device to the power source in a first phase and to selectively couple the second energy storage device to the primary side of the isolated energy transfer device during a second phase. | 05-01-2014 |
| 363073000 |
Constant current to constant voltage or vice versa | 5 |
| 20080247201 | Power-maximizing electrical energy generation system - An electrical energy generation system comprising:
| 10-09-2008 |
| 20100002479 | Power supply device with power factor correction and (startup) current limitation - A power supply device, particularly for an airplane, has a control unit that is provided to match a current path to a voltage curve. An embodiment relates to a rectifier with power factor correction in the form of a step-up converter with switchable (startup) current limitation. | 01-07-2010 |
| 20100014328 | Direct Current Generator and the Pulse generator thereof - The present invention provides a direct current generator and a pulse generator thereof. The pulse generator includes a comparator to replace a central processing unit and a logic integrated circuit to save the costs and space required by the electronic components. The pulse generator generates pulses to control the activation of the direct current generator and then to control the output current of the direct current generator. The direct current generator generates current having pulses based on pulses signals from the pulse generator to drive a load. | 01-21-2010 |
| 20100103707 | Contactless Interface - Power extracted from an antenna inductively coupled to an alternating magnetic field is regulated to provide voltage supplies. In some implementations, a first voltage supply (e.g., 3.8 volts) provides regulated voltage to analog circuits and a second, lower, voltage supply (e.g., 1.4 volts) provides regulated voltage to digital circuits. The first voltage supply is regulated, using shunt regulation, by a first voltage regulator circuit. The second voltage supply is regulated, using a series regulation, by a second voltage regulator circuit. The second voltage regulator circuit is supplied by the shunted current from the first voltage regulator. Excess shunt current provided by the first regulator circuit can be bypassed (e.g., bypassed to ground). The second voltage regulator circuit can use a timer circuit to control the amount of charge transferred to a second voltage supply rail. The timer circuit can compensate for different currents from the first voltage regulator circuit. | 04-29-2010 |
| 20120087164 | CONTACTLESS INTERFACE - Power extracted from an antenna inductively coupled to an alternating magnetic field is regulated to provide voltage supplies. In some implementations, a first voltage supply (e.g., 3.8 volts) provides regulated voltage to analog circuits and a second, lower, voltage supply (e.g., 1.4 volts) provides regulated voltage to digital circuits. The first voltage supply is regulated, using shunt regulation, by a first voltage regulator circuit. The second voltage supply is regulated, using a series regulation, by a second voltage regulator circuit. The second voltage regulator circuit is supplied by the shunted current from the first voltage regulator. Excess shunt current provided by the first regulator circuit can be bypassed (e.g., bypassed to ground). The second voltage regulator circuit can use a timer circuit to control the amount of charge transferred to a second voltage supply rail. The timer circuit can compensate for different currents from the first voltage regulator circuit. | 04-12-2012 |
| 363100000 |
With manual control of the output voltage or current | 3 |
| 20120120695 | ACTIVATABLE AND DEACTIVATABLE SUPPLY UNIT FOR AN ELECTRONIC APPARATUS - A supply unit for an electronic apparatus that can be activated and deactivated has a mains adapter, a first voltage regulator and a voltage source that are connected on the input side with the direct voltage output of the mains adapter, and a logic module supplied by the voltage source with a suitable auxiliary direct voltage. The enable input of the first voltage regulator is connected with the output of the logic module. A switch contact pair is electrically connected to switch the logic module. In the operating mode, a microcomputer is programmed to establish and evaluate the number an duration of the connection of the contact pair. Depending on an evaluation of a user input into the microcomputer, a digital signal is output to switch from the operating mode into standby mode. | 05-17-2012 |
| 20120134190 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - An image forming apparatus includes an image forming unit which forms an image, a power supply which converts input alternating current (AC) power and outputs direct current (DC) power having a predetermined level to operate the image forming unit; a mechanical power switch through which the AC power is supplied and/or shut off, a switch circuit unit which includes a soft power switch to select a turned-on status and/or a turned-off status in accordance with a user's handling, and outputs a switch signal corresponding to a status of the soft power switch, a power controller which selectively supplies the DC power from the power supply to the image forming unit on the basis of the switch signal, and a discharging circuit unit which discharges remaining power of the power supply if the AC power is shut off by the mechanical power switch. Accordingly, a user may quickly turn on/off power using a power switch, and mistaken malfunction may be prevented. | 05-31-2012 |
| 20140307496 | MULTI-OUTPUT POWER SOURCE WITH FOOLPROOF SEAL DEVICE - The present invention relates to a multi-output power source provided with a foolproof seal device. The invention includes a housing formed with a plurality of exposed connection openings; an voltage-converting circuit having an output terminal; a plurality of output ports connected in parallel, each corresponding to one of the connection openings formed on the housing; at least one foolproof seal device for covering the connection openings in such a manner that only one of the connection openings is exposed to outside at a time; and at least one switch device for ensuring that the output terminal of the voltage-converting circuit outputs a voltage corresponding to the connection opening exposed to outside. | 10-16-2014 |
| 363111000 |
Using electronic tube converter | 3 |
| 20090190383 | High Voltage Inverter - Disclosed is a high voltage inverter for converting DC power to AC power with one or more AC output phases. The inverter has for each AC output phase an AC input phase circuit comprising first and second cold cathode field emission controllable electron tubes of triode, tetrode or pentode structure. Each electron tube has a first input node for connection to a high voltage DC potential in excess of 20 KV and a second input node for connection to ground. First electron tube is serially connected between a first end of a primary winding and ground, and second electron tube is serially connected between a second end of the primary winding and ground. Control circuitry controls the electron tubes so that the first and second electron tubes alternatively conduct so as to alternately bring the first and then second end of the primary winding approximately to the potential of ground. | 07-30-2009 |
| 20150098259 | POWER CONVERTER, METHOD OF POWER CONVERSION, AND SWITCHING DEVICE - A power converter including at least one switching device is presented. The power converter is configured to convert an input parameter to an output parameter by periodically activating and deactivating the switching device. The switching device includes: (i) a chamber including an ionizable gas; (ii) a cathode and an anode defining a discharge gap disposed in the chamber; (iii) a magnet assembly configured to generate a first magnetic field such that a plasma is maintained in the discharge gap; and (iv) an electromagnet configured to generate, in response to a deactivation signal, a second magnetic field such that at least a portion of the plasma in the discharge gap is disrupted to deactivate the switching device. A method of power conversion and a switching device are also presented. | 04-09-2015 |
| 20160020057 | COLD CATHODE SWITCHING DEVICE AND CONVERTER - A cold-cathode switching device is presented. The cold-cathode switching device ( | 01-21-2016 |
| Entries |
| Document | Title | Date |
|---|
| 20080198630 | Converter Circuit Comprising Distributed Energy Stores - The invention relates to a converter circuit comprising at least one phase module ( | 08-21-2008 |
| 20080278968 | Integral stack columns - Systems and methods for power conversion are illustrated. Power conversion architecture for fuel cell systems in particular are described that use dual bus architectures having stack segment pairs and a center-tapped neutral line, and/or an architecture employing integer multiple of three DC/DC converter branches. | 11-13-2008 |
| 20090027922 | Power adapter - A power adapter comprises a converter module having circuitry for converting an alternating current (AC) power supply to a direct current (DC) power supply, a connector couplable to an electronic device for supplying the DC power supply to the electronic device, and a switch manually actuatable to control power consumption by the power adapter. | 01-29-2009 |
| 20090052208 | Apparatus to Extend HDMI Connections over a Single Ethernet CAT Cable - This invention is to use a single standard unshielded or shielded Ethernet CAT cable, such as CAT5, CAT5e, CAT6 and similar cable, to extend original digital video signals over long distances. The Ethernet CAT cable can be installed with the required length easily and terminated in the field with simple tools. The Ethernet cable is the standard communication wiring in modern buildings. On the contrary, HDMI cable must be pre-terminated in the factory and is extremely difficult to install in buildings. HDMI video signals contain three pairs of CML video signals, one pair of high-speed clock signals, and three control signals. Each video signal has a data rate over 1.6 Gbps, and one of the control signals is bi-directional. Sending these signals over a single Ethernet CAT cable is very difficult. This invention presents an apparatus to extend HDMI signals over a single Ethernet CAT cable. The present invention is able to extend 1080p video over more than 150 feet, and to reliably extend 1080i over more than 200 feet with HDCP capability over a single unshielded or shielded Ethernet CAT cable. | 02-26-2009 |
| 20090141518 | CIRCUIT AND METHOD FOR RECTIFYING AND REGULATING VOLTAGES - A circuit having a first input and a second input configured to apply an alternating voltage, a first output and a second output configured to supply a rectified and regulated voltage, a rectifier bridge circuit having a current return circuit, a third transistor and a fourth transistor, and a controller configured to regulate the voltage between the first and the second output to a constant value. The current return circuit is connected to the first input, the second input and to the second output. The third transistor is configured as a series voltage regulator and is connected to the first input and the first output. The fourth transistor is configured as a series voltage regulator and is connected to the second input and the first output. The controller is coupled to a control input of the third transistor and to a control input of the fourth transistor. Further, a method for rectifying and regulating voltages of a circuit is provided. The circuit and the method can be used in a contactless chip card. | 06-04-2009 |
| 20090237959 | Digital Control of Power Converters - A system and method for controlling a power converter is presented. An embodiment comprises an analog differential circuit connected to an analog-to-digital converter, a digital pulse generator, and a pre-driver to control the power converter. Another embodiment also includes a digital filter as part of the control loop that may be used to control the loop characteristics of the control circuit. Yet another embodiment replaces the differential circuit with a sigma-delta analog-to-digital modulator and a decimator. | 09-24-2009 |
| 20090303749 | Pick-Up Apparatus for Inductive Power Transfer Systems - An Inductive Power Transfer (IPT) pick-up apparatus includes a magnetically permeable core, a first coil, being wound about the core so as to be inductive coupled therewith such that a current induced in the first coil is most sensitive to a first directional component of magnetic flux and a second coil, being wound about the core so as to be inductively coupled therewith such that a current induced in the second coil is most sensitive to a second directional component of magnetic flux. The first directional component is substantially orthogonal to the second directional component. | 12-10-2009 |
| 20090303750 | METHOD AND SYSTEM OF SYNTONIC CIRCUIT MODULATION CONTROLLING - A modulation control method and system for a resonance circuit that generally relate to electrical communication technique. In the system, a controlling chip of the resonance circuit is connected to associated controlling means providing voltage matching and resistance control. The controlling means provides controlling parameters to the chip in accordance with input voltage. The controlling chip modulates the resonance circuit accordingly. A phase-shifting pulse width modulation controlling chip or a pulse width modulation controlling chip is connected to a voltage matching module and a resistance controlling module, wherein the voltage matching module matches the voltage ranges and the resistance controlling module adjusts the equivalent resistance of RT terminal to the external as the voltage of loop circuit changes accordingly. In the method, a controlling chip is used to realize a controlling mode of frequency modulation, pulse width modulation, and combination thereof with respect to the resonance circuit through the voltage matching module and the resistance controlling module. The present invention is advantageous in low cost and high efficiency. | 12-10-2009 |
| 20090310384 | AC-DC input adapter - An output module for providing power to a device by using power from a source includes an inlet port, an outlet port, a power conversion circuit configured to receive power from the source through the inlet port and supply converted power to the device through the outlet port, and a control circuit coupled to the power conversion circuit and configured to determine a power requirement of the device and to operate the power conversion circuit to produce converted power having a parameter based upon the power requirement. Preferably, the power requirement is a charging requirement of a battery of the device. | 12-17-2009 |
| 20100142227 | PHOTOVOLTAIC POWER CONDITIONING SYSTEM AND METHOD - A photovoltaic power conditioning system and method is provided. The system includes an isolated DC/DC converter ( | 06-10-2010 |
| 20100220499 | HYBRID DISTRIBUTION TRANSFORMER WITH AN INTEGRATED VOLTAGE SOURCE CONVERTER - A hybrid distribution transformer is provided that includes an electromagnetic transformer and a voltage source converter that is operable to reduce fluctuation in the output voltage of the hybrid distribution transformer in the event of an increase or decrease in the input voltage. | 09-02-2010 |
| 20100271848 | CIRCUIT CONFIGURATION FOR OPERATING A HOUSEHOLD APPLIANCE - A circuit for operating a household appliance, having a switching power supply for transforming a grid voltage of a supply grid to a direct current supply voltage, a controller for controlling processes of the household appliance that can be coupled to the switching power supply and supplied by the DC supply voltage, and a button by means of which the switching power supply can be coupled to the supply grid by closing an electrical switch. The switch has two mechanically stable states and can be transitioned from one mechanically stable state to the other by actuating the button and/or by an at least indirect energy input from the controller. | 10-28-2010 |
| 20100315837 | METHOD FOR OPERATING A SWITCHING-MODE POWER SUPPLY - A method for operating a switching power supply is provided. A switching element is switched on and off by a switching signal with a variable switching frequency. A frequency bandwidth is predefined for determining average levels of a frequency spectrum of the switching signal. The switching frequency is modulated by a modulation frequency greater than a frequency bandwidth. | 12-16-2010 |
| 20110058391 | INVERTER DEVICE - An inverter device includes a power module, which converts DC power into AC power, and a bus bar, which is fastened to a terminal of the power module by a bolt. In a state in which a current sensor is arranged between the terminal of the power module and the bus bar, the bolt fastens together the bus bar, the current sensor, and the terminal. The current sensor detects current flowing through the bolt to detect current flowing through a power supply route, which includes the bus bar. | 03-10-2011 |
| 20110080755 | Power Supply with Synchronized Clocks and Related DC-DC Converter - A power supply with synchronized clocks includes a transformer for transforming an AC input voltage into a DC input voltage, a delay unit for delaying phase of a standard clock signal to generate a plurality of synchronization clock signals, a major DC-DC converter for adjusting voltage level and phase of the DC input voltage according to one of the plurality of synchronization clock signals to generate a major output voltage, and a plurality of parallel DC-DC converters each for adjusting voltage level and phase of the major output voltage according to one of the plurality of synchronization clock signals to generate a minor output voltage. | 04-07-2011 |
| 20110110120 | INVERTER SYSTEM - An inverter system includes inverting circuitry for inverting an input DC signal into a square wave or quasi-square wave AC signal across a resistance, and a controller for causing the inverting circuitry to invert the input DC signal into the AC signal. The DC signal is a DC voltage having a value that ranges from 24-32 volts DC. The AC signal is an AC voltage having a value that ranges from 115-230 volts AC RMS. | 05-12-2011 |
| 20110122654 | HIGH VOLTAGE AC/DC OR DC/AC CONVERTER STATION WITH FIBER-OPTIC CURRENT SENSOR - DC current in a high voltage AC/DC or DC/AC converter station can be measured via the Faraday effect in one or more loops of an optical sensing fiber located at the base of a bushing extending through a wall of the hall. This arrangement can exploit the base of the bushing being at ground potential, which can simplify mounting work and maintenance. | 05-26-2011 |
| 20110199791 | REVERSE ENERGY RECOVERY CIRCUIT - A reverse energy recovery circuit is located on a power conversion circuit equipped with a transformer which has a primary winding side connected to a power switch driven by a control unit. The primary winding side has a first end and a second end bridged by the reverse energy recovery circuit which comprises a first capacitor, a second capacitor, an ancillary winding and a diode. The first and second capacitors are coupled in series. The second capacitor has one end connected to the first end of the primary winding side. The ancillary winding has a first end connected to the first end of the primary winding side. The diode has a cathode connected to a second end of the ancillary winding and an anode bridged the first and second capacitors so that the diode and ancillary winding form a one way path between the first and second capacitors. | 08-18-2011 |
| 20110249471 | METHOD AND APPARATUS FOR ACHIEVING ZERO AC-DRAW MODE FOR A DEVICE - The disclosure describes a processing system with a soft power switch assembly configured to include a zero-power off mode that would allow an off state with no power drain by the device while maintaining all other soft power off mode capabilities, including low power modes, (e.g., sleep, hibernation modes). The processing system can be restored from the zero-power off mode using the same actuation mechanism used when switching from a power on mode to a soft power off mode. | 10-13-2011 |
| 20110255307 | APPARATUS AND METHOD FOR CONTROLING POWER QUALITY OF POWER GENERATION SYSTEM - There are provided an apparatus and a method for controlling the power quality of a power generation system. According to the present invention, there is provided an apparatus for controlling the power quality of a power generation system including a DC/AC inverter converting DC voltage into AC voltage and supplying inverter current to a grid, including: a grid voltage phase follower generating a grid signal; a fundamental extractor extracting a magnitude of a fundamental wave of a load current introduced into a non-linear load connected between the DC/AC inverter and the grid; a first calculator subtracting a preset current compensation value from the magnitude of the fundamental wave from the fundamental extractor; and a second calculator generating an inverter current instruction value for the DC/AC inverter by using the output value of the first calculator and the grid signal and the load current from the grid voltage phase follower. | 10-20-2011 |
| 20110261588 | INVERTER MODULE AND INTEGRATED-INVERTER ELECTRIC COMPRESSOR USING THE SAME - An inverter module and an integrated-inverter electric compressor using the same, which can eliminate noise interference, noise leakage, and the like attributable to a smoothing capacitor accommodated therein and which can be reduced in size and weight is provided. An inverter module ( | 10-27-2011 |
| 20110286243 | ISOLATED FEEDBACK SYSTEM FOR POWER CONVERTERS - An isolated feedback system for power converters includes an error amplifier for receiving an input voltage to output an error signal; a modulator circuit to modulate the error signal with a carrier signal; an acoustic transformer unit, one end of the acoustic transformer connected to the modulator circuit, where a frequency of the carrier signal is away from resonant frequencies of the acoustic transformer; and a demodulation circuit connected to the other end of the acoustic transformer and receiving the modulated signal. | 11-24-2011 |
| 20110292686 | CAPACITOR CIRCUIT AND POWER CONVERSION CIRCUIT - A capacitor circuit includes a first capacitor line including a film capacitor and a second capacitor line including a ceramic capacitor that are connected in parallel with each other. The second capacitor line includes an inductance element that is connected in series with the ceramic capacitor. The inductance element is set to a value such that a series resonant frequency of the first capacitor line and a series resonant frequency of the second capacitor line are matched. | 12-01-2011 |
| 20110317449 | ALTERNATING CURRENT REGULATING MEANS - The present invention provides an alternating current regulating means including a positive half-cycle current-limiting circuit and a negative half-cycle current-limiting circuit. The positive half-cycle current-limiting circuit includes a first diode and a first current-limiting circuit. The negative half-cycle current-limiting circuit includes a second diode and a second current-limiting circuit. The first diode allows the positive half-cycle current of the alternating current to pass through, and the second diode allows the negative half-cycle current of the alternating current to pass through. Thus, when the input power supply generates an alternating current, the first diode and the second diode respectively allow the positive half-cycle current and the negative half-cycle current of the alternating current to pass through. Then, the first current-limiting circuit and the second current-limiting current respectively process the positive half-cycle current and the negative half-cycle current, so that the average current value of the outputted alternating current can be restricted to a stable value for a load. | 12-29-2011 |
| 20120069602 | METHOD AND ARRANGEMENT FOR TRACKING THE MAXIMUM POWER POINT OF A PHOTOVOLTAIC MODULE - A method and apparatus of tracking the maximum power point of a photovoltaic module. The method includes measuring an output voltage of the photovoltaic module, determining an output voltage of the inverter connected to the photovoltaic module, and measuring output current of the inverter connected to the photovoltaic module. A variable relating to energy of the capacitor is defined using the measured PV module output voltage, and a second harmonic component is extracted from the defined variable. A second harmonic component of the module output power is estimated using the defined variable, measured output current of the inverter, and the determined output voltage of the inverter. The estimated and extracted second harmonic components are multiplied, and a DC component is extracted from the product. A control signal for controlling the inverter connected to the photovoltaic module is formed by using the extracted DC component in a PI algorithm. | 03-22-2012 |
| 20120092894 | System For Regulating A Load Voltage In Power Distribution Circuits And Method For Regulating A Load Voltage In Power Distribution Circuits - The present invention refers to a system for regulating a load voltage (C) in power distribution circuits comprising at least: a regulation transformer ( | 04-19-2012 |
| 20120147628 | RESONANT CIRCUIT WITH CONSTANT CURRENT CHARACTERISTICS - An electronic resonant circuit of very high efficiency which is suitable for driving loads with a known and controlled current. The resonant circuit has input terminals and output terminals with a first reactance Xs, in series with an input terminal, a second reactance X | 06-14-2012 |
| 20120170319 | Apparatus and method for converting a low AC voltage to a high DC voltage - An apparatus, including an AC voltage transforming device increases an AC voltage input signal to a higher AC voltage signal, an AC to DC voltage conversion device which converts the higher AC voltage signal to a DC voltage, wherein the DC voltage has a higher voltage level than the peak or peak-to-peak voltage level of the higher AC voltage signal, a DC to DC conversion device which converts the DC voltage input to a higher DC voltage output, and a DC voltage to load connecting device which connects the higher DC voltage to an electrical load when the output of the DC to DC voltage conversion device attains a desired amplitude or an amplitude needed to drive the electrical load. | 07-05-2012 |
| 20120195073 | CONTROL DEVICE, CONTROL METHOD, AND POWER SUPPLY DEVICE - There is provided a control device including a control unit, the control unit being configured to, when a first time, during which a level of a voltage output from a rectifier circuit for rectifying an alternating current supplied from an alternating-current power supply is lower than a level of a threshold voltage, has reached a threshold time, output a stop signal for stopping an operation of a power factor correction circuit to a control circuit that controls the operation of the power factor correction circuit. | 08-02-2012 |
| 20120201051 | POWER-SUPPLY CIRCUIT FOR DC APPLICANCE - A power-supply circuit for a DC appliance includes an input unit including a first terminal and a second terminal so as to receive a DC current, an output unit including a third terminal to output the DC current entered by the input unit and a fourth terminal, a connection unit including a first conductive line and a second conductive line so as to interconnect the input unit and the output unit, a rectifier unit including first to fourth diodes coupled as a bridge diode format so as to rectify the input DC current in a predetermined direction, an inductor unit that is connected in series to the rectifier unit in such a manner that the input DC current is gradually increased from an abrupt change time point of the DC current, and a condenser unit that is connected in series to the inductor unit. | 08-09-2012 |
| 20120218782 | METHOD AND APPARATUS FOR SIGNAL CONVERSION - To convert an electrical signal from one form to another form a chopper element is placed in a circuit for receiving any arbitrary input signal. The chopper element generates a second signal. A transformer element receives the second signal at the primary winding and generates a third signal in the secondary winding. A rectification or reconstruction element is used to ensure that the third signal has the desired frequency, magnitude and polarity. A method for converting the signal is also disclosed. | 08-30-2012 |
| 20120281433 | POWER SUPPLY APPARATUS AND CONTROLLER - To measure input power as accurate as possible, a power supply apparatus includes an AC/DC converter that generates a direct-current internal power supply from an alternating-current commercial power supply, an output-voltage measurement unit that measures an output voltage of the internal power supply, an output-current measurement unit that measures an output current of the internal power supply, a temperature measurement unit that measures an environmental temperature of the power supply apparatus itself, a storage device that stores therein in advance conversion efficiency data in which a correspondence between a conversion efficiency η of the AC/DC converter and the environmental temperature is recorded, and a computation unit that determines the conversion efficiency η based on the environmental temperature and the conversion efficiency data and calculates the input power of the commercial power supply by using the determined conversion efficiency η, the output voltage, and the output current. | 11-08-2012 |
| 20120327687 | POWER ADAPTOR WITH POWER-SAVING MECHANISM - A power adaptor includes an inverter, a feedback circuit, a detecting unit, and an adjusting unit. The inverter is configured to convert an input voltage into an output voltage according to a power conversion ratio and adjust the power conversion ratio according to a feedback voltage. The feedback circuit is configured to provide the feedback voltage by voltage-dividing the output voltage according to a specific ratio. The detecting unit is configured to detect a load of an output end of the power adaptor. The adjusting is configured to adjust the specific ratio according to the loading variation of the load. | 12-27-2012 |
| 20130003418 | PULSE PATTERN GENERATING CONFIGURATION FOR THREE-PHASE CURRENT SOURCE ELECTRIC POWER CONVERTER - A pulse pattern generating configuration for a three-phase current source electric power converter is provided that ensures a minimal switching loss regardless of the level of power factor, and thus improves the electric power conversion efficiency. | 01-03-2013 |
| 20130010500 | CONVERTERS AND INVERTERS FOR PHOTOVOLTAIC POWER SYSTEMS - A power system includes a plurality of DC/DC converters and a DC/AC inverter. The plurality of DC/DC converters having outputs electrically connected in parallel for supplying a DC voltage bus to an input of the DC/AC inverter. The plurality of DC/DC converters each include a maximum power point tracker (MPPT). Various DC/DC converters and DC/AC inverters suitable for use in this system and others are also disclosed. | 01-10-2013 |
| 20130039096 | RENEWABLE ENERGY OUTPUT MONITORING - An electrical power generating system based on a photovoltaic cell array comprises means for monitoring the output of the array in order to determine whether the output is sufficient to sustain supply to a connected power network. The output of the array is monitored by sensing the voltage across a resistor connected across the array output. The array is connected to the network when a predetermined threshold is reached. | 02-14-2013 |
| 20130107578 | POWER ADAPTER | 05-02-2013 |
| 20130114302 | METHOD AND APPARATUS FOR DETECTING ISLANDING CONDITIONS OF A DISTRIBUTED GRID - An exemplary method and apparatus for detecting islanding conditions of a distributed grid are disclosed, wherein transfer of power through a power electrical unit is controlled on the basis of a control reference. The apparatus includes a first stage and a second stage performing a respective portion of the method. The first stage injects a reactive component to the control reference, and, for at least one electrical quantity of the grid, determines a change in the quantity induced by the injected component, and determines, on the basis of the change in the electrical quantity, whether to move to the second stage of the method. The second stage, for at least one electrical quantity of the grid, determines a value of the electrical quantity, forms a positive feedback term using at the determined value adding a positive feedback term to the control reference, determines a change in an electrical quantity induced by the feedback term, and determines islanding condition on the basis of the change in the quantity induced by the feedback term. | 05-09-2013 |
| 20130114303 | PHOTOVOLTAIC ARRAY SYSTEMS, METHODS, AND DEVICES WITH BIDIRECTIONAL CONVERTER - Devices, systems and methods for operating, monitoring and diagnosing photovoltaic arrays used for solar energy collection. The system preferably includes capabilities for monitoring or diagnosing an array, under some circumstances, by using a bidirectional power converter not only to convert the DC output of the array to output power under some conditions, but also, for diagnostic operations, applying a back-converted DC voltage to the array. | 05-09-2013 |
| 20130121029 | Connecting an Inverter in a Solar Power Plant with Shifted Potential Center Point - The invention relates to a process of connecting an AC output of a transformerless inverter of a solar power plant to an internal AC power grid at an input side of a galvanic isolation, while an offset voltage for shifting a potential center point of a photovoltaic generator connected to the inverter is applied. The process includes: (i) synchronizing the inverter with the power grid; (ii) essentially matching a potential center point of the current-carrying lines of the AC output and a potential center point of the power grid, while only one of the potential center points of the current-carrying lines and the power grid is yet shifted by the offset voltage; and (iii) galvanically connecting all current-carrying lines of the AC output with the power grid only after the steps of synchronizing and essentially matching. | 05-16-2013 |
| 20130182460 | MAGNETITE-CONTAINING RESIN AND ELECTRONIC COMPONENT - This disclosure provides a magnetic material-containing resin to be used for coating and forming cores. A magnetite-containing resin of the present invention includes a magnetite having a residual magnetic flux density of less than 15 Am | 07-18-2013 |
| 20130188396 | System and Method for System-Level Power Point Control of a Photovoltaic Device - A method of controlling a photovoltaic system includes providing a photovoltaic device having a variable DC voltage output and a variable DC current output. The photovoltaic device has a combination of a voltage output level and a current output level corresponding to a maximum power point. A DC power supply is connected in a parallel and/or series combination with the photovoltaic device. A DC load is connected in series to the combination of the DC power supply and the photovoltaic device such that the load is powered by the combination. A characteristic of the DC power supply is adjusted such that the voltage output and the current output of the photovoltaic device substantially match the voltage output level and the current output level corresponding to the maximum power point or other desired power point. | 07-25-2013 |
| 20130223102 | DEVICE FOR POWERING BATTERY DEPENDENT EQUIPMENT WITH AC POWER - A device for powering battery dependent equipment with AC power includes faux batteries that correspond with standard and non-standard battery sizes and configurations; cables; and a means for connecting the faux batteries to an outlet. Instead of inserting batteries into the battery compartment of equipment, a user inserts the faux batteries, plugs the inventive device into a wall socket, and uses the device as usual. A variety of different configurations and components ensure safety and deliver the desired output. | 08-29-2013 |
| 20130322122 | CONTROL CIRCUITS FOR POWER CONVERTERS - A control circuit for controlling one or more power switches of a power converter includes a voltage control loop and a current control loop. The control circuit is configured to generate a current reference for the current control loop using the voltage control loop and an AC reference signal. The control circuit is configured to operate in at least a first mode in which a parameter of the voltage control loop is sampled only at every other zero crossing of the AC reference signal and the sampled parameter is used to generate the current reference for the current control loop. The power converter may be an AC-DC converter or a DC-AC converter (i.e., inverter). Alternatively, the voltage control loop may be sampled at every zero crossing of the AC reference signal, and/or more frequently during transient load conditions. | 12-05-2013 |
| 20130322123 | CONTROL DEVICE AND CONTROL METHOD DURING BYPASSING OF POWER UNITS - A control device and a control method during bypassing of power units are provided. The method includes: detecting a first three-phase output electrical signal; calculating a first positive sequence component and a first negative sequence component of the first three-phase output electrical signal; providing a given positive sequence component and a given negative sequence component so as to respectively perform the closed-loop compensation on the first positive sequence component and the first negative sequence component, thereby outputting a second positive sequence component and a second negative sequence component; superimposing the second positive sequence component and the second negative sequence component; and outputting a second three-phase output electrical signal in a preset way. | 12-05-2013 |
| 20130329461 | POWER SUPPLY DEVICE USING ELECTRIC POWER NETWORK - A power supply device using electric power network connects to an external power source and an electronic device, and supplies an alternating current power from the external power source to the electronic device to be a direct current power for the electronic device. In this case, the power supply device using electric power network comprises an electric power connection unit connected with the external power source, a conversion unit connected with the electric power connection unit, and an output unit connected with the conversion unit and the electronic device. The electric power connection unit is used for acquiring the alternating current power from the external power source, and the alternating current power is converted into a direct current power by the conversion unit. Thereby, the direct current power required for the electronic device during the process of charging and supplying power is supplied. | 12-12-2013 |
| 20130336010 | SYSTEMS AND METHODS FOR OPERATING AN AC/DC CONVERTER WHILE MAINTAINING HARMONIC DISTORTION LIMITS - Alternating current to direct current (AC/DC) converter control systems and methods are operable to source high values of DC loads or source low values of DC loads while maintaining harmonic distortion limits. An exemplary embodiment receives direct current (DC) load information corresponding to a DC load drawn from an alternating current (AC) network by an AC/DC converter, wherein the AC network also sources a plurality of AC loads, and wherein harmonics output from the AC/DC converter is limited to at least a specified harmonic distortion limit; compares the DC load information with a load threshold; in response to the DC load information being at least equal to the load threshold, operates the AC/DC converter under continuous conduction mode (CCM) control; and in response to the DC load information being less than the load threshold, operates the AC/DC converter under critical conduction mode (CRM) control. | 12-19-2013 |
| 20140003093 | MULTI-LEVEL CONVERTER, AND INVERTER HAVING THE SAME AND SOLAR POWER SUPPLY APPARATUS HAVING THE SAME | 01-02-2014 |
| 20140016357 | Power Regenerator - A power system comprises a switching circuit for driving an inductive load and a magnetic core coupling with the switching circuit to form a magnetic amplifier. | 01-16-2014 |
| 20140029308 | INVERTER HAVING EXTENDED LIFETIME DC-LINK CAPACITORS - An inverter having extended lifetime DC-link capacitors for use with a DC power source such as a photovoltaic panel is described. The inverter uses a plurality of switchable capacitors to control the voltage across the capacitors. The expected lifetime of the capacitors can be extended by disconnecting unnecessary capacitors from a voltage. The capacitors may be periodically connected to a voltage in order to maintain an oxide dielectric layer of the capacitor. | 01-30-2014 |
| 20140078780 | DIGITAL CONTROLLER FOR A POWER CONVERTER - Provided are methods and circuits for a controller for a control system, comprising first and second control loops that operate substantially independently, wherein the first control loop is an amplitude control loop and the second loop is a phase or frequency control loop. In some embodiments the amplitude control loop operates at an amplitude that is proportional to an amplitude of an input signal at a fundamental system frequency and at a selected harmonic of a fundamental system frequency; and the frequency control loop operates at a fundamental system frequency and at a selected harmonic of the fundamental system frequency. The frequency control loop may adaptable to a fundamental control system frequency or to a selected harmonic of the fundamental control system frequency. The controller may be implemented as a resonant controller and used in various ac systems, and offers high structural robustness in digital implementations. | 03-20-2014 |
| 20140085935 | POWER CONVERSION DEVICE - A power conversion device that includes first and second power conversion units; and a DC link unit positioned between the first and second power conversion units. In the power conversion device, the DC link unit includes a main capacitor and a dummy capacitor, which are selectively used. Accordingly, it is possible to prevent damage of a capacitor used in the DC link unit and to extend the lifespan of the capacitor. | 03-27-2014 |
| 20140112022 | ELECTRICAL SWITCHING APPARATUS INCLUDING TRANSDUCTOR CIRCUIT AND ALTERNATING CURRENT ELECTRONIC TRIP CIRCUIT - An electrical switching apparatus includes a transductor circuit that senses a direct current between at least one input terminal and at least one output terminal and outputs an alternating current proportional to the direct current between the input terminal and the output terminal. The electrical switching apparatus also includes an alternating current electronic trip circuit configured to control pairs of separable contacts to separate based on the alternating current output from the transductor circuit. | 04-24-2014 |
| 20140204613 | PROVIDING CONTROL POWER WITH A PHOTOVOLTAIC SYSTEM - For controlling a photovoltaic system connected to an AC power grid and including a photovoltaic generator and an inverter, electric power which includes positive and negative dynamic control power is transferred by means of the inverter between the photovoltaic generator and the AC power grid as a function of a received power control signal. | 07-24-2014 |
| 20140233262 | Pseudo Zero Vectors for Space Vector Modulation and Enhanced Space Vector Modulation - A method of performing space vector modulation for PWM control for creating AC waveforms includes generating and sampling a reference signal to generate reference samples and performing a reference vector approximation to synthesize a reference vector associated with at least one of the reference samples. The reference vector approximation employs active vectors, one or more zero vectors, and one or more pseudo zero vectors in the formation thereof. Another method of performing space vector modulation (SVM) includes generating a reference signal and sampling the reference signal at a sampling frequency to generate a plurality of reference samples. The method also includes performing a reference vector approximation to synthesize a reference vector associated with at least one of the reference samples, wherein the reference vector approximation has a first portion that employs two adjacent active vectors and a remaining portion that employs two non-adjacent active vectors in the formation thereof. | 08-21-2014 |
| 20140233263 | TRACKING METHOD AND TRACKING DEVICE FOR A VOLTAGE CONVERTER FOR A PHOTOVOLTAIC SYSTEM - The disclosure relates to a tracking method for a voltage transformer, in particular an inverter, of a photovoltaic system. In the method, an intermediate circuit voltage is repeatedly decreased or increased in one direction to a lower or higher voltage by voltage steps of a specified magnitude. The method is characterized in that an average rate of change of the intermediate circuit voltage in a partial time period between two voltage steps is limited by a maximum average rate of change, the maximum average rate of change being defined according to the magnitude of the intermediate circuit voltage. The disclosure further relates to a tracking device designed to perform the tracking method and to an inverter equipped with the tracking device. | 08-21-2014 |
| 20140241011 | REACTOR, CONVERTER, AND POWER CONVERTER APPARATUS - A reactor of the present invention includes a coil | 08-28-2014 |
| 20140247623 | REACTOR, REACTOR-USE COIL COMPONENT, CONVERTER, AND POWER CONVERTER APPARATUS | 09-04-2014 |
| 20140254200 | HIGH RESOLUTION RECTIFIER SUITABLE FOR LOW VOLTAGE SIGNALS - A high resolution rectifier suitable for low voltage signals includes a signal input end connected to a signal source for inputting an original AC current; two amplifiers; one receiving the original AC current from a positive end; and the other receiving the AC current from a negative end; amplification factors of the two amplifiers being reversed to each other; two half wave rectifiers each connected to a respective amplifier selected from the two amplifiers; each half wave rectifier receiving an output from the respective amplifier and removing negative half parts of the input current; and an adder connected to the two half wave rectifiers for adding outputs from the two half wave rectifiers so as to full-wave rectifying of the original AC current. | 09-11-2014 |
| 20140313781 | Stacked Switched Capacitor Energy Buffer Circuit Architecture - Described herein is a stacked switched capacitor (SSC) energy buffer circuit architecture and related design and control techniques. | 10-23-2014 |
| 20140321166 | CONNECTING AN INVERTER IN A SOLAR POWER PLANT WITH SHIFTED POTENTIAL CENTER POINT - The invention relates to a process of connecting an AC output of a transformerless inverter of a solar power plant to an internal AC power grid at an input side of a galvanic isolation, while an offset voltage for shifting a potential center point of a photovoltaic generator connected to the inverter is applied. The process includes: (i) synchronizing the inverter with the power grid; (ii) essentially matching a potential center point of the current-carrying lines of the AC output and a potential center point of the power grid, while only one of the potential center points of the current-carrying lines and the power grid is yet shifted by the offset voltage; and (iii) galvanically connecting all current-carrying lines of the AC output with the power grid only after the steps of synchronizing and essentially matching. | 10-30-2014 |
| 20150326137 | POWER SYSTEM INCLUDING AN ELECTRET FOR A POWER BUS - A power system for an alternating current power bus includes an electret operatively associated with the alternating current power bus. The electret includes an output having an alternating current voltage when the alternating current power bus is energized. A rectifier includes an input electrically interconnected with the output of the electret and an output having a direct current voltage responsive to the alternating current voltage of the output of the electret. A powered device includes an input electrically interconnected with the output of the rectifier. The powered device is powered responsive to the direct current voltage of the output of the rectifier. | 11-12-2015 |
| 20160043650 | SMART POWER DELIVERY SYSTEM AND RELATED METHOD - According to one disclosed embodiment, a smart power delivery system includes a power conversion unit having a communication module and a power management module that can convert mains power into an optimized voltage and limited current used to power an electronic device. In one embodiment, a power conversion unit can optimize an output voltage by communicating with a connected electronic device and exchanging parameters representing desired characteristics of the output voltage. In one embodiment, an electronic device receives power from a power conversion unit through a wired power conduit. In another embodiment, an electronic device receives power from a power conversion unit through a wireless power conduit. In one embodiment, an optimal voltage is selected after negotiation between multiple electronic devices and a power conversion unit. | 02-11-2016 |
| 20160141091 | COUPLED INDUCTOR, MAGNET, AND MULTI-LEVEL INVERTER - An inductor, includes: a central post including a plurality of magnets, where each magnet includes an inductor and a primary magnetic core. The inductor at least partially surrounds the primary magnetic core and includes an auxiliary magnetic core and a winding. The winding | 05-19-2016 |
| 20180026434 | EXCITATION SYSTEM | 01-25-2018 |
| 20190149039 | HETEROGENEOUSLY INTEGRATED POWER CONVERTER ASSEMBLY | 05-16-2019 |
| 20190149073 | MOTOR DRIVE SYSTEM INCLUDING POWER STORAGE DEVICE | 05-16-2019 |
| 20220140739 | POWER CONVERSION SYSTEM - A power conversion system includes N power converters. Each power converter includes an input terminal, a first output terminal and a second output terminal. Each of the N power converters receives a DC power through the input terminal. The first output terminal of a first power converter and the second output terminal of an N-th power converter are connected in parallel to form an N-th total output terminal. The first output terminal of an i-th power converter and the second output terminal of an (i−1)-th power converter are connected in parallel to form an (i−1)-th total output terminal. The two input terminals of the load are connected with two total output terminals of N total output terminals. A (2k−1)-th power converter is connected with a first power source. A 2k-th power converter is connected with a second power source. The redundancy of the power conversion system can be achieved. | 05-05-2022 |
