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9042142 Multi-level voltage converter  
The invention discloses a voltage source converter and a voltage source converter system. The voltage source converter comprises: a multi-level voltage source converter, being adapted to output a...
9042137 Even-level inverter  
There is provided an even-level inverter, including: a voltage-dividing circuit dividing input DC power into an even number of voltage levels; a plurality of switching devices connected to...
9030852 System for power conversion utilizing matrix converters  
A power conversion device according to the aspects of the present technique is presented. The device includes a first converter and a second converter operatively coupled to the first converter....
9030854 Method and apparatus for zero-sequence damping and voltage balancing  
An exemplary method and an apparatus implementing the method for an arrangement having a three-phase, multi-level inverter, an output LCL-filter connecting the inverter to a grid, and a...
9024594 System and method for power conversion for renewable energy sources  
A power converter is configured to transfer energy from a photovoltaic (PV) array to a DC bus internal to the power converter. The power converter executes a modulation module to selectively...
9019736 DC-to-AC power conversion system and method of operating the same  
A DC-to-AC power conversion system is provided to convert a DC input voltage into an AC output voltage, which mainly includes a bridge switching circuit, an auxiliary switch circuit, and a control...
9007789 Electric circuit for high voltage power conversion  
The present invention provides an electric circuit wherein a multi-phase bridge is connected in series with a plurality of single-phase bridges. The multi-phase bridge is composed of a plurality...
9000705 Power controller  
There is provided a power controller including a drive circuit connected to a DC power supply to apply a first voltage to the drive circuit and configured to supply power to an external load, a...
8988915 DC to AC converter  
A DC to AC converter includes a first switch, a second switch, a first half bridge inverter, and a second half bridge inverter. The first switch includes a first terminal and a second terminal....
8982593 Cascaded H-Bridge (CHB) inverter level shift PWM with rotation  
Cascade H-Bridge inverters and carrier-based level shift pulse width modulation techniques are presented for generating inverter stage switching control signals, in which carrier waveform levels...
8981589 Switched battery and capacitor arrangement and related operating methods  
Systems and methods are provided for regulating the state of charge of a battery. An exemplary electrical system includes a fuel cell coupled to a bus and a battery coupled to the bus via a...
8976543 Full bridge power supply with digital feedback  
A circuit includes a full-bridge converter circuit coupled to a transformer for converting a first voltage level to a second voltage level. A sensing circuit is coupled to the transformer for...
8971082 Power conditioning unit with voltage converters  
A power conditioning unit for delivering power from a power source to a mains utility supply, the power conditioning unit comprising a plurality of input terminals for connecting to the power...
8970063 Method and arrangement for balancing voltages of series connection of storage units for electrical energy  
An arrangement which includes two or more energy storage units for electrical energy connected in series, and two or more balancing resistor units. Each balancing resistor unit is connected in...
8971078 DC/AC inverter switch controller  
An inverter according to an embodiment of the present disclosure may include a converter having a switch, configured to convert a DC voltage into a half-wave rectified sine waveform voltage; a...
8971067 Output current distortion compensating apparatus in inverter  
An output current distortion compensating apparatus in an inverter is disclosed, the inverter including an inverter controller generating a PWM signal for controlling a PWM voltage generator,...
8971079 Inverter device  
An inverter device includes an inverter circuit, a control circuit, a first drive circuit, a second drive circuit, first and second photocouplers, and a signal switching part. The signal switching...
8964432 Apparatus and method for controlling circulating current in an inverter system  
A power conversion system is disclosed that provides multiphase power, including phase voltages for each phase of the multiphase power. The system comprises a plurality of inverters that generate...
8963512 Power supply device and electric power conversion device using the same  
A comparator compares a voltage of a node into which electric current flows from a system of a first voltage and a reference voltage for maintaining the node at a second voltage. A step-up-type...
8958219 Non-isolated inverter and related control manner thereof and application using the same  
A non-isolated inverter including a DC input-side, a capacitor connected in parallel with the DC input-side, an AC output-side connected in parallel with a load, and first and second bridge-arm...
8958222 Modulation of switching signals in power converters  
There is provided a method and control system for reducing noise in a power converter by controlling a switching device in the power converter according to a modulation scheme. The switching...
8958221 Grid tied inverter, system and method  
A grid tied inverter connectable to an electricity grid having a DC to DC current fed push-pull inverter to generate a current waveform from a DC voltage source. The push-pull inverter includes a...
8953350 Photovoltaic power converters  
Photovoltaic power converter systems and methods are described. In one example, a method for use in operating a solar power converter includes sampling a DC link voltage of a DC link during a...
8953352 Controller and a method for a DC converter, and also a DC converter  
A controller (2) and a method for a DC converter (1), wherein the DC converter (1) comprises an input (E), an output (A), a connection to ground (GND), and also at least two half-bridges with two...
8947897 Current-source power converting apparatus  
A current-source power converting apparatus in an embodiment includes a current-reference generating unit, a polarity determining unit, a PWM-pulse-signal generating unit, and a drive-signal...
8934274 Power conversion apparatus  
A current flowing into one of half-bridge circuits of a power semiconductor module is detected by corresponding ones of current detection circuits through a current detection terminal provided in...
8934265 DC-DC converter  
Provided is a vehicle which enables a highly-efficient DC-DC converter and a highly-efficient power supply to a load, regardless of a power supply amount of to the load. When the power supply...
8929114 Three-level active neutral point clamped zero voltage switching converter  
A main circuit of a three-level active neutral point clamped voltage source converter having a pair of additional main switches provides two paths between an output node and a neutral point in...
8929111 System and method for common-mode elimination in a multi-level converter  
A multi-level converter includes a plurality of alternating current (AC) terminals connected to an AC source or load, at least three direct current (DC) terminals connected to a multi-level DC...
RE45320 Video dock for portable media player  
A docking station for a portable media player. The docking station includes a docking connector to physically secure the portable media player and a communication interface to communicatively...
8923016 Solar module for generating a D.C. voltage and method for its operation  
A solar module has a solar cell which generates a DC voltage. The module has a converter for converting a DC voltage fed into its input. The module contains a semiconductor switch and a controller...
8912738 Drive system, method for operating a drive system, and use  
A drive system and method for operating a drive system, including an electromotor, inverter, energy store, the electromotor being able to be supplied from the inverter, which is supplyable from...
8908402 Modular high-frequency converter and method for operating the same  
A modular high-frequency converter includes submodules, each having an input-side half bridge and a DC link circuit with a DC link capacitance connected in parallel to the half bridge. A DC link...
8908405 Snubber circuit and inverter with the same  
An inverter may include an inversion unit for converting a direct current bus voltage into an alternating current voltage, a first snubber unit, and a second snubber unit. The inversion unit may...
8891254 Power converter and battery charger using the same  
A power converter including: a transformer in which first and second voltages are induced; a full-bridge circuit including parallel-connected first and second arms each including series-connected...
8891256 Systems and methods for flyback power converters with switching frequency and peak current adjustments  
System and method for regulating a power converter. The system includes a comparator configured to receive a first signal and a second signal and generate a comparison signal based on at least...
8891269 Full bridge converter  
Methods and circuits for balancing current in a transformer are disclosed herein. An embodiment of the method includes sensing the magnitude and direction of current flow through the primary side...
8885368 Power converting apparatus suppressing switching noise by controlling switching operation  
A power converter for effectively reducing switching noise is provided. The power converter comprises a capacitor 111; switching devices Q11a and Q11b connected to the capacitor 111 in parallel;...
8879285 Power converter for outputting power to a system  
A power converter includes a booster circuit, an inverter circuit, a hysteresis control circuit, and a proportional-integral control circuit. The booster circuit boosts DC power of a DC power...
8879290 Unified control of single and three-phase power converters  
Provided herein are unified control methods and implementations for controlling single and three-phase power converters. In an exemplary embodiment, a unified controller is provided that can be...
8866326 Interleaved motor controllers for an electric taxi system  
Embodiments of the disclosure include an electric taxi system including a generator configured to provide an AC power source and a main controller configured to generate one or more PWM control...
8867247 DC/AC power converter with DC side double frequency pulsation suppression caused by AC side faults  
A commanded negative-sequence current is added to a commanded current so as to suppress double-frequency pulsation on the DC side. The commanded negative-sequence current is found from three...
8860379 Discharging a DC bus capacitor of an electrical converter system  
A system and method of discharging a bus capacitor of a bidirectional matrix converter of a vehicle are presented here. The method begins by electrically shorting the AC interface of the converter...
8861240 Power converter  
A power converter includes pairs of series-connected switching elements and, for each pair, a bidirectional switch that clamps the switching elements of the pair at the mid-point of a DC voltage...
8854846 Method and apparatus for determining a fault current portion in a differential current  
When determining a fault current portion IF in a differential current idiff(t) measured by an inverter, an AC voltage uAC(t) applied to an AC output of the inverter is measured and a periodic...
8854850 AC power supply apparatus  
In an AC power supply apparatus, first and second switching circuits connected in series to an input terminal to which a DC input power supply is connected include first and second rectification...
8839509 Method for manufacturing electronic apparatus  
Multiple high-voltage side and low-voltage side electric conductors are formed from one sheet of a conductive plate in such a way that the multiple electric conductors are arranged in parallel to...
8842456 Analog controller for inverter  
An analog controller is disclosed. The controller has a maximum power point tracking unit and a power factor adjusting unit. The maximum power point tracking unit generates a maximum power...
8837183 Power switch series circuit and control method thereof  
The present invention provides a power switch series circuit and its control method. The power switch series circuit includes a plurality of series modules, a control module and a drive module. At...
8836256 Switched reluctance motor torque estimation  
A drive system has a switched reluctance motor (SR motor) and a control system configured to determine an estimated total torque of SR motor as a function of the phase voltages and phase currents...