| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 363133000 | Double ended (i.e., push-pull) type | 20 |
| 20080253158 | Power Converter - There are provided: sets of pairs of main circuit switching elements ( | 10-16-2008 |
| 20090027937 | High frequency power supply - A high frequency power supply, in particular a plasma supply device, for generating an output power greater than 1 kW at a basic frequency of at least 3 MHz with at least one switch bridge, which has two series connected switching elements, wherein one of the switching elements is connected to a reference potential varying in operation, and is activated by a driver, and wherein the driver has a differential input with two signal inputs and is connected to the reference potential varying in operation. | 01-29-2009 |
| 20090034308 | DOUBLE ENDED INVERTER SYSTEM WITH AN IMPEDANCE SOURCE INVERTER SUBSYSTEM - A double ended inverter system suitable for use with an AC electric traction motor of a vehicle is provided. The double ended inverter system cooperates with a first DC energy source and a second DC energy source, which may have different nominal voltages. The double ended inverter system includes an impedance source inverter subsystem configured to drive the AC electric traction motor using the first energy source, and an inverter subsystem configured to drive the AC electric traction motor using the second energy source. The double ended inverter system also utilizes a controller coupled to the impedance source inverter subsystem and to the inverter subsystem. The controller is configured to control the impedance source inverter subsystem and the inverter subsystem in accordance with a boost operating mode, a traditional inverter operating mode, and a recharge operating mode of the double ended inverter system. | 02-05-2009 |
| 20090086520 | Grid-Connected Power Conditioner and Grid-Connected Power Supply System - During charging operations of a power storage unit, a voltage converting unit converts a voltage received from direct-current buses and supplies it to power storage unit, whereas during discharging operations of power storage unit, voltage converting unit converts a voltage received from power storage unit and outputs it to direct-current buses. In voltage converting unit, a side connected to power storage unit and a side connected to direct-current buses are insulated from each other. As a result of this, if a ground failure occurs in power storage unit, its effects on an inverter circuit, a commercial power system and the like are prevented. A grid-connected power conditioner with high safety can thus be obtained. | 04-02-2009 |
| 20100214810 | Push-Pull Inverter - A push-pull inverter allows a power supply unit to supply an input voltage to two primary windings of a transformer, and allows MOSFETs (Metal Oxide Semiconductor Field Effect Transistors) to drive the transformer in push-pull mode so as to increase the input voltage supplied from the power supply unit and to output the increased voltage as an output voltage from a secondary winding of the transformer. The two primary windings of the transformer are mixedly wound on a same bobbin without being separated, so that when the transformer is driven, the two primary windings of the transformer are prevented from resonating with each other. This makes it possible to prevent turbulence in the input current, thereby reducing loss (power loss) of the MOSFETs, allowing the transformer to have a high efficiency. | 08-26-2010 |
| 20110299313 | VARIABLE REACTIVE ELEMENT IN A RESONANT CIRCUIT - A resonant converter is provided which may be used for supplying power to the primary conductive path of an inductively coupled power transfer (ICPT) system. The converter includes a variable reactive element in the resonant circuit which may be controlled to vary the effective inductance or capacitance of the reactive element. The frequency of the converter is stabilised to a nominal value by sensing the frequency of the converter resonant circuit, comparing the sensed frequency with a nominal frequency and varying the effective inductance or capacitance of the variable reactive element to adjust the converter frequency toward the nominal frequency. | 12-08-2011 |
| 20140268967 | ELECTROMAGNETIC INTERFERENCE (EMI) REDUCTION IN MULTI-LEVEL POWER CONVERTER - A multi-level power converter system includes a multi-level power converter configured to synthesize at least three direct current (DC) voltages into an alternating current (AC) output voltage, and includes a plurality of transistors. A controller generates pulse-width modulation (PWM) signals used to control a state of the plurality of transistors of the multi-level converter by comparing first and second carrier signals to a reference signals, wherein a period of the first and second carrier signals is randomly varied from a nominal period. | 09-18-2014 |
| 20140313805 | Self-Excitation Push-Pull Type Converter - A self-excitation push-pull type converter with a transformer having a closed magnetic core or iron core, which formed of a main part ( | 10-23-2014 |
| 20160111977 | Switching Converter - A switching converter includes a transformer having a primary winding to which an input voltage is supplied and formed of two primary winding halves, a tap between the winding halves, and a pair of switching elements in series connection with the winding halves. A voltage divider formed of two capacitors and across which the input voltage is supplied is connected at a center tap between the two capacitors to the primary winding tap through a damping element or network. Each switching element is connected through a respective driver to a controller that operatively effects synchronous control of the switching elements. | 04-21-2016 |
| 363134000 | Separately driven | 11 |
| 20080239775 | Power Converter Apparatus and Methods Using Neutral Coupling Circuits with Interleaved Operation - A power converter apparatus, such as an uninterruptible power supply (UPS), includes an inverter having an input coupled to a first DC bus and a second DC bus and configured to generate an AC output with respect to a neutral terminal at a phase output terminal thereof. The apparatus further includes first and second neutral coupling circuits, each configured to selectively couple the first DC bus and the second DC bus to the neutral terminal, and a control circuit configured to cause interleaved operation of the neutral coupling circuits. | 10-02-2008 |
| 20090046491 | Inverter - An inverter ( | 02-19-2009 |
| 20090046492 | Inverter - An inverter ( | 02-19-2009 |
| 20100182814 | BIDIRECTIONAL DC-DC CONVERTER - Provided is a bidirectional DC/DC converter which can control a boost voltage in a wide range. The DC/DC converter includes: three series circuits formed by a first to a sixth switch, each two of which are connected in series between a plus terminal and a minus terminal of a high voltage side; two transformers in which primary windings are connected in series and input terminals of the primary windings are connected to connection points of the switching elements; and a seventh to a tenth switch. The transformers have secondary windings, each of which is divided at the middle point. The middle points are connected to a minus terminal of a low voltage side. Respective terminals of the secondary windings are connected to a plus terminal of the low voltage side by the seventh to the tenth switches. | 07-22-2010 |
| 20110317461 | POWER CONVERTER - A synchronization detection PLL section generates an ON synchronized signal formed as a result of synchronization control based on a diode ON synthesized signal. The synchronization detection PLL section also generates an OFF synchronized signal formed as a result of synchronization control based on a diode OFF synthesized signal. A stator gate instruction generator PWM section generates a gate instruction signal for controlling the switching of a switching element on the basis of the ON synchronized signal and the OFF synchronized signal. | 12-29-2011 |
| 20120195087 | FAST SWITCHING FOR POWER INVERTER - An apparatus includes an inverter including a high-side switch coupled to a low-side switch, the inverter generating a time-varying drive current from a plurality of drive control signals, a positive rail voltage, and a negative rail voltage wherein controlling the switches to generate the time-varying drive current produces a potential transitory overshoot condition for one of the switches of the inverter; a drive control, coupled to the inverter, to generate the drive control signals and to set a level of each of the rail voltages responsive to a plurality of controller signals; and a controller monitoring one or more parameters indicative of the potential transitory voltage overshoot condition, the controller dynamically adjusting, responsive to the monitored parameters, the controller signals to reduce a risk of occurrence of the potential transitory voltage overshoot condition. | 08-02-2012 |
| 20120287690 | POWER CONVERSION APPARATUS AND METHODS EMPLOYING VARIABLE-LEVEL INVERTERS - A power conversion apparatus, such as an uninterruptible power supply, included first and second DC busses, a neutral node and an inductor configured to be coupled to a load. The apparatus further includes an inverter circuit coupled to the first and second DC busses, to the neutral node and to the inductor and configured to selectively couple the first and second DC busses and the neutral node to a first terminal of the inductor to generate an AC voltage at a second terminal of the inductor such that, in a given half-cycle of the AC voltage, the inverter circuit uses a switching sequence wherein the first DC bus, the second DC bus and the neutral node are successively coupled to the first terminal of the inductor. | 11-15-2012 |
| 20140119088 | THREE-LEVEL INVERTER AND POWER SUPPLY EQUIPMENT - The present application provides a three-level inverter and power supply equipment, including: a first IGBT, where a collector thereof is connected to a positive direct current bus, an emitter thereof is connected to a first connection point, and the collector and the emitter are bridge-connected to a first freewheeling diode; a second IGBT, where a collector thereof is connected to the first connection point, an emitter thereof is connected to a second connection point, and the collector and the emitter are bridge-connected to a second freewheeling diode; a third IGBT, where a collector thereof is connected to the second connection point, an emitter thereof is connected to a third connection point, and the collector and the emitter are bridge-connected to a third freewheeling diode; a fourth IGBT, where a collector thereof is connected to the third connection point, an emitter thereof is connected to a negative direct current bus. | 05-01-2014 |
| 20140321183 | SYSTEM FOR SUPPLYING A LOAD - A supply system for a load with a parallel resonance and comprising a transformer having a first and a second primary winding and a secondary winding, the secondary winding being directly connected to the load, which is essentially equivalent to a capacitor and a resistor in parallel, and having the function of a parallel resonant inductance. The supply system comprises a switching block connected to the transformer and including a first and a second switch respectively connected to the first and second primary windings and having respective control terminals connected to a first and second output terminal of a driving device adapted for driving the first and second switches in a complementary manner for obtaining an output voltage on the secondary winding having a sinusoidal pattern and a value determined on the basis of the capacitive value of the load and of the inductive value of the secondary winding. | 10-30-2014 |
| 20160065088 | PUSH PULL INVERTER - The present invention discloses a push pull inverter, which includes a DC source V | 03-03-2016 |
| 20160087521 | CONTROL OF A HALF-BRIDGE - A half-bridge includes a first switching device for connecting a terminal to a first potential, and a second switching device for connecting the terminal to a second potential. A method according to the present invention for controlling the half-bridge includes the steps of outputting a closing signal for the first switching device while the second switching device is open, and of ascertaining a latency period between the start of the closing signal and a collapse of a voltage applied across the first switching device. Subsequently, a dead time that lies between an opening of the second switching device and a closing of the first switching device is minimized on the basis of the ascertained latency period. | 03-24-2016 |
