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8179066 |
Method for controlling a load with a predominantly inductive character and a device applying such a method
Method for controlling a load with a predominantly inductive character, whereby in order to feed a phase of the above-mentioned load (3), use is made of at least two connected output voltages,...
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8179104 |
Automatic self-adjusting voltage controller
An apparatus (14/18) for controlling a voltage on a transmission line (10). The apparatus (14/18) comprises a first voltage sourced converter controller (18) connected to a first node (22) of the...
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8179698 |
Power converter system that operates efficiently over a range of load conditions
A power converter system supplies power to one or more loads. The power converter system comprises at least one power converter operating at a desired efficiency; and a power storage system coupled...
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8174850 |
Method and circuit for avoiding hard switching in half bridge converters
A half bridge switching dc-dc converter an input dc voltage to an output dc voltage. The converter includes a switching circuit for receiving the input dc voltage and generating a periodic square...
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8174851 |
Method for operating a resonant power converter
According to an exemplary embodiment a method of operating a resonant power supply comprises controlling the resonant power supply in a discontinuous way. According to an exemplary embodiment a...
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8169795 |
Audio power conversion system
An audio power conversion system includes a power supply having a positive supply rail and a negative supply rail for supplying power to a single ended class D amplifier. The system further...
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8169796 |
Isolated switching power supply apparatus
In an isolated switching power supply apparatus, by performing on/off control of a first switching device and a second switching device, energy is transmitted from the primary side to the secondary...
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8169797 |
AC/DC intermediate-circuit converter having a very wide AC input voltage range
An AC/DC intermediate-circuit converter has a very wide AC input voltage range with a ZVS three-level DC/DC resonant converter with an LLC series-resonant circuit. Two intermediate-circuit...
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8159848 |
Power conversion circuit
A power conversion circuit includes a bidirectional switch 2. The bidirectional switch 2 has a first gate terminal G1, a second gate terminal G2, a first ohmic terminal S1 and a second ohmic...
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8159837 |
Integrated bias and standby power supply circuit
An apparatus, system, and method are disclosed for efficiently providing bias voltages. A first switching regulator stage that includes an inductor receives an input voltage and provides as an...
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8149596 |
N-phase full bridge power converter
An N-phase full bridge power converter, comprising: a load device; a plurality of bridge legs, each being composed of two power switches; a plurality of transformers, each being coupled between two...
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8149597 |
Intermediate bus architecture with a quasi-regulated bus converter
A dc-dc converter system comprises a quasi-regulated bus converter and plural regulation stages that regulate the output of the bus converter. The bus converter has at least one controlled...
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8143856 |
Bi-directional inverter-charger
A bi-directional inverter-charger including a bridge rectifier and DC-to-DC conversion components. The inverter-charger may be connected between an alternating current source, e.g., an AC line, and...
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8136222 |
Method of forming a coupled coil arrangement
A method of forming an encapsulated coupled coil arrangement. The method includes coupling a first lead of a first coil to a second lead of an electrical circuit device, by soldering or infusion,...
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8138694 |
Bidirectional buck-boost power converters
A bidirectional buck-boost power converter 13 including a pair of inverter modules 14, 15 disposed at an output of a machine, and an inductor Lo connected between the pair of inverter modules 14,...
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8134850 |
Systems and methods for frequency control of a voltage converter
Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer, an operational...
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8130515 |
Bi-directional DC-DC converter and method for controlling the same
A bi-directional DC-DC converter has a transformer for connecting a voltage type full bridge circuit connected to a first power source and a current type switching circuit connected to a second...
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8120930 |
Rush current reduction circuit and electric appliance
An output node at a plus side of a diode bridge (DB2) is connected to a drain of a transistor (Q1), and a source of the transistor (Q1) is connected to an output node at a minus side the diode...
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8115408 |
Light source apparatus and light source adjusting module
A light source apparatus and a light source adjusting module are provided. The light source apparatus includes a power supply, a phase modulator, an electrical transformer, a light source adjusting...
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8116103 |
Device for feeding electric energy into a power grid and DC converter for such a device
The device is for feeding electricity into a power grid (8) with a DC generator (1), a DC converter (2) and an inverter (3), and particularly to a DC converter (2) suited for the device. The DC...
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8108984 |
Method for manufacturing integrated circuit inductors having slotted magnetic material
Methods of manufacture of integrated circuit inductors having slotted magnetic material will be described. The methods may employ electro- or electroless plating techniques to form a layer or...
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8107261 |
Powering unit with full bridge and wide adjusting range circuit
There is described a powering unit comprising at least one transformer, at least one full bridge circuit via which a primary winding of the transformer is connected to a direct current voltage...
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8107265 |
Current balanced push-pull inverter circuit with regeneration snubber circuit and voltage boost section
This inverter circuit includes two switching elements which are turned alternately ON and OFF, and a first primary winding connected in series between these switching elements, and also includes an...
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8102147 |
Wireless multi-charger system and controlling method thereof
Disclosed are a wireless multi-charger system capable of saving the total charging time of a large number of wireless power transmission devices since one wireless multi-power transmission device...
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8102677 |
Switching power supply device and method for adjusting dead time thereof
A resonant switching power supply device includes: a first switching element and a second switching element which are configured to convert and adjust power. A capacitance of a first/second...
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8098501 |
Switching power supply control circuit
A comparator detects whether a feedback signal of an output voltage detecting circuit for a switching power supply circuit reaches a control voltage. A comparator detects an operating state of the...
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8098500 |
Phase shift full bridge converter with reduced current stress
A phase shift full bridge converter with a reduced current stress includes: a switching unit that switches an input voltage; a transformer that includes a first capacitor serially connected to, and...
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8094467 |
Induction power system
An induction power system configured to drive a load includes a primary side circuit (PSC) and a secondary side circuit (SSC). The PSC has a main inductor configured to generate a current-induced...
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8094470 |
Current balanced push-pull inverter circuit with snubber and discharge circuitry
This current balanced push-pull type inverter circuit includes first and second switching elements, and an output transformer which includes a first primary winding and a second primary winding...
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8094469 |
Current balanced push-pull inverter circuit
This inverter circuit includes first and second switching elements and an output transformer which has a first primary winding connected in series between the first switching element and the second...
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8089780 |
Semiconductor switch and power conversion system provided with semiconductor switch
A semiconductor switch is provided with a main element having reverse conductivity and serving as a voltage-driven switching element having a high withstand voltage, an auxiliary element serving as...
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8089784 |
Synchronous rectifier
This invention relates to a synchronous rectifier for LLC resonant converter. This method allows simple drive method for the synchronous rectifier MOSFETS by using the transformer secondary winding...
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8085557 |
Bidirectional DC/AC inverter
A bidirectional DC-AC inverter is disclosed. The DC-AC inverter includes an H bridge circuit, a connecting portion connected to the H bridge circuit, a smoothing filter that connects the connecting...
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8085556 |
Dynamic converter topology
Methods and apparatus of dynamic topology power converters are provided. One method includes monitoring at least one variable of the power converter and based on the at least one monitored...
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8081494 |
Fully integrated multi-phase grid-tie inverter
In a grid-tie inverter, the DC input is phase and pulse-width modulated to define multiple phase shifted voltage pulses with the width of each pulse being modulated according to the grid AC...
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8080954 |
Inverter apparatus
An inverter apparatus comprises an inverter circuit using pairs of switching elements. The pseudo AC voltage of each phase of this inverter circuit is controlled by pulse modulation using pulses...
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8081493 |
Electronic power conditioner with integrated magnetics
A power supply including a main stage converter having a bridge circuit having input switches for receiving input voltage and providing an output, a main transformer and at least one output choke...
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8072785 |
Switching power supply unit
A switching power supply unit is provided, which may supply stable output while manufacturing cost is held down. In a smoothing circuit, a magnetic flux in a first circular magnetic path, a...
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8071232 |
Hybrid fuel cell system and voltage conversion control method thereof
To provide a hybrid fuel cell system for improving converter efficiency. In a hybrid fuel cell system (1) in which a fuel cell (22) and an electricity storage device (21) are connected via a...
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8068352 |
Power inverter control for grid-tie transition
A control system for a power inverter is disclosed. The power inverter may be configured to supply power to a grid. The control system may include a plurality of output voltage sensors and a...
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8064227 |
Rectifying circuit for a multiphase electric machine
Cathode-anode voltage across free-wheeling diodes in an active rectifier is used in the determination of switching points when the free-wheeling diode is forward biased. Hysteretic switching is...
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8059434 |
Power conversion device and control method thereof
A power conversion device is provided for converting a DC voltage to an alternating current corresponding to an AC voltage according to the AC voltage, which includes a power conversion unit and an...
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8054651 |
Simple and effective self regulating inductive power transfer system
An inductive power transfer system for coupling a power source to a load across an air gap is provided, including a primary unit and a secondary unit separable from the primary unit and arranged to...
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8040695 |
Method for portioning output current of a DC-DC converter
At least some aspects of the invention are directed to methods and apparatus for controlling an uninterruptible power supply and subsystems of a UPS. A first aspect of the invention is directed to...
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8040697 |
Resonant circuit and resonant power converter with a narrow operating frequency bandwidth
A resonant circuit has two parallel resonant branches and one assistant inductor connecting the two resonant branches. Each resonant branch has a series capacitor and a series inductor connected in...
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8040706 |
Sine wave lamp controller with active switch commutation and anti-flicker correction
A pulse width modulated half bridge dimming controller for dimming a lighting ballast is described. The top half of the bridge is comprised of two switches, the top switch set, and the bottom half...
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8040704 |
Integrated magnetics switching converter with zero inductor and output ripple currents and lossless switching
Switching Converter with a novel two-loop Integrated magnetic structure integrates transformer and two output inductors and eliminates large circulating current in the transformer secondary side...
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8040702 |
DC/DC power converting apparatus
Three or more circuits, in which series-connected low-voltage and high-voltage side switches including MOSFETs including parasitic diodes are connected across positive and negative terminals of...
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8035996 |
Asymmetric zero-voltage switching full-bridge power converters
Disclosed are full-bridge power converters providing DC output power at increased conversion efficiencies, and methods of operating full-bridge power converters providing DC output power at...
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8035995 |
ACDC converter
This invention relates to an ACDC converter (1) comprising a converter input (3) and a converter output (5), a pre-regulation stage (7) and a DC transformer stage (9) comprising a transformer input...
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