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9025345 Power supply apparatus  
A high-efficiency power supply apparatus is provided in light of the reduction of the switching loss. The power supply apparatus connected between the AC power supply and the DC load converts the...
9024641 Wire breakage detecting method for high voltage generating device  
A method of detecting a wire break in a high voltage generating device that is configured to detect a wire breakage in a low-voltage cable is disclosed. The method of a wire break includes:...
9019727 Temperature compensation of output diode in an isolated flyback converter  
An isolated flyback converter having temperature compensation (TC) uses primary side sensing and an output diode, the output diode having a variable voltage drop related to its temperature. A...
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...
9019725 Control device for a resonant converter  
A control device for a resonant converter is described. The converter comprises a switching circuit adapted to drive a resonant circuit that includes at least one capacitor. The converter is...
9018871 Power conversion apparatus  
A carrier generating unit applies a carrier that monotonically decreases to a switching control unit during either one of a first period that is a period immediately following a period in which a...
9019731 High-power medium-voltage drive power cell having power elements disposed on both sides of base plate  
The present invention provides a high-power medium-voltage drive power cell, which comprises: a rectifier module for rectifying the three-phase AC input voltage to get a DC voltage; an IGBT...
9019732 High voltage DC/DC converter  
It is presented a high voltage DC/DC converter for converting between a first DC connection and a second DC connection. The high voltage DC/DC converter comprises: a first set of DC terminals; a...
9018890 Electric motor having a pulse width modulator  
The invention relates to an electric motor having a stator and a rotor. The electric motor also comprises a controller, wherein the controller is connected to the stator and/or rotor, and is...
9019730 Power converting apparatus and filter switch  
A power converting apparatus includes a switching element, a filter substrate, a housing, a main body, an air duct, and a filter switch. The switching element is configured to convert and output...
9019724 High power converter architecture  
The power converter is an integration of three topologies which include a forward converter topology, a flyback converter topology, and a resonant circuit topology. The combination of these three...
9018924 Low dropout regulator  
Aspects are directed to low dropout regulation. In accordance with one or more embodiments, an apparatus includes a charge pump that generates an output using a reference voltage, a low dropout...
9019729 Controller for a switched mode power converter  
A switched mode power converter controller outputs a switch control signal for a switch, receives sensed voltage and primary current input signals, and includes a constant current mode controller...
9018792 Arrangement for operating consumers in a rail vehicle with electrical energy, selectively from an energy supply network or from a motor-generator combination  
An arrangement for operating a rail vehicle includes a DC voltage intermediate circuit which is connected to an energy supply network, at least one traction inverter which is connected at its DC...
9019733 Three-phase AC-DC converter circuit and conversion method and control system thereof  
The embodiment of present invention provides a three-phase AC (Alternating Current)-DC (Direct Current) converter circuit, conversion method and the control system thereof. The converter circuit...
9019735 Power factor correction circuit and method for controlling power factor correction  
A power factor correction circuit may include a boost converter circuit in which a plurality of boost circuits including a boost inductor, a rectifying diode, and a boost switch are connected with...
9019728 Power converter output voltage clamp and supply terminal  
A secondary control circuit includes a voltage regulator circuit to be coupled to an output of a power converter to provide a regulated power supply. One or more switched loads is coupled between...
9019726 Power converters with quasi-zero power consumption  
A power converter system, method and device powers a load when coupled to the load and draws a quasi-zero amount of power from the power supply when not coupled to the load. The power converter...
9019734 Solid state switch gate firing with phase shift delay line  
A gate firing phase shift delay line technique is described for use in DC motor drive systems and is easily adaptable for controlling a plurality of electronically coupled power modules. A drive...
9013902 Multi-terminal power conversion device, multi-terminal power transfer device, and power network system  
The present invention provides a multi-terminal power conversion device, a multi-terminal power transfer device, and a power network system which allows an existing power grid to be divided into a...
9013900 Noise reduction unit, power supply device, and method for disposing cores in noise reduction unit  
A noise reduction unit includes a plurality of cores each having formed therein a through hole, a plurality of wires connected to a noise source and each wound around the corresponding core...
9013906 Power system-interconnected inverter device  
In a power-system-interconnected inverter device, PI control circuits obtain voltage correction values in directions reducing the current errors on the basis of current errors serving as...
9013903 High side driver circuitry  
One embodiment of the present disclosure provides a method for controlling a power switch that includes converting a control signal to a current pulse signal, where the control signal is...
9013899 Constant current power supply apparatus  
A constant current power supply apparatus is provided which can drive a load with a constant current, even if the circuit configuration is such that a time delay is generated in the feedback...
9013258 Rectifier transformer  
A rectifier transformer including at least one secondary with windings, one pair of magnetic transductors per winding, one of the transductors having one or more first busbars and the other having...
9013135 Power converting apparatus for electric motor vehicle propulsion  
A power converting apparatus for electric motor vehicle propulsion is provided that is suitable for a use in which power regeneration from an inverter unit to a power storing unit or power supply...
9013897 Power supply  
A power supply applied to an electronic device for providing power includes a transformer unit, a connector, a pulse-width modulation (PWM) control unit, and a switch unit. The connector is...
9013159 Parallel-operating power supply system  
Each of master and slave switching power supply apparatuses (2m, 2s) has an IGBT (10m or 10s) switching-controlled by a PWM pulse signal produced, based on a clock signal, by a switching device...
9013895 Adaptive inductive power supply  
A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected...
9013901 Modular voltage source converter  
A modular voltage source converter (100) comprises a plurality of cells conformal to a basic cell design comprising a first and a second terminal, a capacitor and at least two switches arranged in...
9013203 Tracking energy consumption using a fly-back converter technique  
The invention relates to an apparatus and method for tracking energy consumption. An energy tracking system comprises at least one switching element, at least one inductor and a control block to...
9013904 System and method for DC power transmission  
A power transmission system is provided. The power transmission system includes a power source for providing power. The system also includes a power conversion system comprising power converters...
9013898 Synchronous rectifier controller, power converter using same, and method therefor  
In one form, a synchronous rectifier controller includes a drive clamp adjust terminal, a drive terminal, a clamp voltage generator circuit coupled to the drive clamp adjust terminal for measuring...
9013905 Three-phase 48-pulse rectifier transformer  
A three-phase 48-pulse rectifier transformer includes two 24-pulse rectifier transformers phase-shifted through valve-side output windings. Each 24-pulse rectifier transformer has two sets of...
9013896 Apparatus, systems and methods for power supply employing single-stage forward voltage conversion  
A method of supplying direct-current (DC) power is presented herein. In the method, a first electrical signal and a second electrical signal are received. The first electrical signal alternates...
9007786 Switching controller for flyback power converters without input capacitor  
The present invention proposes a switching controller of a flyback power converter. The switching controller includes a switching circuit, a sample-and-hold circuit, a voltage detection circuit,...
9005832 Method and arrangement for improved operability of a high temperature fuel cell system  
An arrangement for improved operability of a high temperature fuel cell device at higher fuel cell voltage values than nominal voltage values, each fuel cell in the fuel cell device including an...
9007788 Excitation control circuit and electrically excited wind power system having the same  
The present invention provides an excitation control circuit and the electrically excited wind power system having the same. The excitation control circuit includes a plurality of full-power...
9007793 Synchronous rectifier driver circuit rectifier  
A synchronous rectifier includes a primary rectifier circuit and a secondary rectifier circuit. The primary rectifier circuit is configured to produce first and second half-rectified signals from...
9007792 Arrangement for transmitting power between a DC power line and an AC power line  
An arrangement transmits power between a DC power line and an AC power line carrying a voltage having a number of phases. The arrangement includes a number of transformers, one for each phase and...
9007796 Power conversion with current sensing coupled through saturating element  
An architecture for current-modulating power-handling circuits, such as power converters, where a small saturating inductance is used to obtain a pulse edge when the main current value crosses zero.
9007052 Voltage sensing in isolated converters  
A system for sensing voltage in an isolated converter includes an input circuit isolated from an output circuit using a first transformer, the first transformer having a primary coil and a...
9003826 Arrangement for starting a single phase induction motor  
The motor (1) of the present invention is fed by the mains voltage (Vac), and comprises a main winding (MW), an auxiliary winding (AW), a first triac (2) connected in series to the auxiliary...
9007791 Digital slope control for switched capacitor dc-dc converter  
Representative implementations of devices and techniques minimize switching losses in a switched capacitor dc-dc converter. The slope of the charging and/or discharging phase may be modified,...
9007787 Method and apparatus for bypassing Cascaded H-Bridge (CHB) power cells and power sub cell for multilevel inverter  
Bypassing methods and apparatus are presented along with power cells and sub cells for multilevel inverters in which DC current flow into a DC link capacitance is interrupted and a bypass switch...
9007790 Frequency converter and method for identifying and blocking a fault current in a frequency converter  
In a frequency converter operated for safety of personnel and/or fire protection via a ground fault interrupter is frequently not able to distinguish between an actual fault current and an...
9007795 Power conversion device  
The power conversion device includes a plurality of semiconductor modules, each having a main body section including a switching element therein. In a module unit, a positive module and a negative...
9006624 Resonant frequency detection for induction resonant inverter  
An induction heating system includes an induction heating coil operable to inductively heat a load with a magnetic field, a detector for detecting a current feedback signal corresponding to a...
9007794 Control system for a power supply having a first half-bridge leg and a second half-bridge leg  
A power supply control system for a power supply having a first half-bridge leg and a second half-bridge leg. In the control system, a first plurality of drive signals are configured to operate a...
9007785 Power supply, image forming device, and piezoelectric transducer control method  
A power supply with a digital control circuit generates an output voltage by driving a piezoelectric transducer with an alternating current voltage at a digitally controlled driving frequency. To...