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9036387 Alternating-current/direct-current converter  
An alternating-current/direct-current converter includes a rectifier, a reactor, a capacitor, and a switching rectifier. The rectifier is configured to rectify alternating-current voltage output...
9036379 Power converter based on H-bridges  
A power converter includes an active front end (AFE) that is coupled by a dc link stage to a plurality of H-bridge inverters. One or more multi-phase electro-magnetic energy conversion devices,...
9035493 Power-fluctuation reducing apparatus for power generation system  
According to one embodiment, there is provided a power-fluctuation reducing apparatus in a power generation system to control a converter connected to the power generation system and connected to...
9035634 Power supply for a load control device  
A power supply for a load control device generates a DC voltage and provides an asymmetrical output current, while drawing a substantially symmetrical input current. The power supply comprises a...
9036373 Closed loop control of a cyclo-converter  
A three-phase resonant cyclo-converter including a closed loop control module for controlling the switching frequency of the cyclo-converter, the closed loop control module including: a voltage...
9036381 Additional electric power receiving method and device replacing conventional grounding with negative voltage source  
An additional electric power receiving method replacing conventional grounding with a negative voltage source includes the step of transmitting electromagnetic wave or current from a power supply...
9035585 Motor drive circuit  
A motor-drive circuit includes a detection circuit to detect a reverse current to flow in a direction from a first sink-side transistor to a second source-side transistor or in a direction from a...
9036390 Frequency converter that suppresses crosstalk that occurs between a local oscillation signal and a received signal, and receiver that uses the frequency converter  
The present invention is applied to a frequency converter used for a receiver. The frequency converter according to the present invention includes an LO signal generator (11) that generates an LO...
9036376 Switched-mode compound power converter with main and supplemental regulators  
In certain embodiments, the present invention provides a compound power converter in which the majority of power passes from input to output through only a single stage of power conversion. At...
9036374 Switching mode power supply and control method thereof  
There is provided a switching mode power supply having primary and secondary induction coils inductively coupled to each other and converting a voltage applied to the primary induction coil to...
9036384 Power converter having semiconductor switching element  
Provided is a configuration in which it is possible to mount an applied voltage suppression circuit configured to prevent voltage breakdown of a semiconductor switching element, and a set voltage...
9036385 Power supply, power management device applied to a power supply, and method for performing brown-out protection and overheat protection of a power management device  
A power supply can provide brown-out protection and overheat protection. The power supply includes a rectifier, a transformer, and a power management device. The rectifier is used for receiving an...
9036388 Semiconductor device  
A semiconductor device of a three-level inverter circuit with a reduced number of power supplies for driving IGBTs. The semiconductor device includes a series-connected circuit of IGBTs between P...
9035637 Systems and methods for controlling power converters  
A power conversion system has a power converter configured to receive an input voltage signal, convert the input voltage to an output voltage signal, and provide the output voltage signal to a...
9030857 Five-stage neutral point clamped inverter  
The multi-level DC/AC converter, comprising: an input (5,7) connectable to a direct voltage source (3), with a first connection (5) and a second connection (7) between which can be applied an...
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....
9030850 Resonant switching regulator with adaptive dead time  
A switching power supply of certain aspects of the invention includes a minimum dead time generating circuit that generates a minimum dead time from an OFF timing of an ON pulse detected from the...
9030185 Power factor correction circuit  
A power factor correction circuit includes a first series circuit, a second series circuit, a smoothing capacitor, and a reactor. The power factor correction circuit further includes an input...
9032228 Standby power reducing apparatus  
A standby power reducing module according to an embodiment includes a AC rectification unit; a resonance unit electrically connected to the AC rectification unit and dropping DC voltage; a...
9030856 High voltage inverter device and electrical leakage detector thereof  
In a high voltage inverter device switching an input voltage to apply an exciting current to an excitation winding of a transformer and output an alternating-current high voltage from an output...
9030843 High frequency square-wave power distribution system  
A minimalized power converter has a square-wave voltage source operating at 100 percent duty-ratio, a series inductance and a rectifier. A high frequency square-wave power distribution system...
9030851 DC bus voltage control method and system  
A method for controlling voltage of a DC bus in a converter circuit is provided. The method includes monitoring a duty cycle of a switch that connects a resistive circuit across the DC bus, the...
9030845 Power supply system and image forming apparatus  
A power supply system includes: a switching power supply; and a control device, wherein the switching power supply includes: a transformer; a semiconductor switching element; a switch control...
9030846 Transformer-based switching resonant power conversion apparatus  
A resonant power conversion apparatus including a transformer-based resonant converter and first and second switch control units is provided. The transformer-based resonant converter includes a...
9030822 Power module cooling system  
A cooling system is operable to facilitate cooling a power module or other electronic assembly. The cooling system may be configured to facilitate cooling a DC/AC inverter or other electronic...
9030844 High bandwidth, high efficiency DC-DC multilevel converter topology  
A multilevel DC-DC converter includes a voltage source that provides a voltage Vout1 to at least one charge converter circuit and an output filter capacitor having an associated output voltage...
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...
9030855 Semiconductor device, start-up circuit having first and second circuits and a single voltage output terminal coupled to a second node between the semiconductor unit and the first circuit, and operating method for the same  
A semiconductor device, a start-up circuit, and an operating method for the same are provided. The start-up circuit comprises a semiconductor unit, a first circuit, a second circuit, a voltage...
9029909 Systems, circuits, devices, and methods with bidirectional bipolar transistors  
Methods, systems, circuits, and devices for power-packet-switching power converters using bidirectional bipolar transistors (BTRANs) for switching. Four-terminal three-layer BTRANs provide...
9030849 Switching power supply device and semiconductor device  
In a switching power supply device which intermittently executes a switching operation, a power loss which occurs in resumption of the switching operation is reduced. A semiconductor device works...
9030848 DC to DC converter  
A DC to DC converter can include a reverse-blocking semiconductor switch that makes a synchronously rectifying MOSFET become parallel-connected with a capacitor that is connected to a power supply...
9030847 Inverter and driving method thereof  
An inverter and driving method of the inverter are disclosed. The inverter includes an active clamp forward (ACF) converter and a flyback converter. One of a forwarding operation of delivering...
9030853 Power conversion equipment having a capacitor failure detecting circuit  
Power conversion equipment which can detect a short circuit failure of series connected smoothing capacitors is provided. The equipment includes a capacitor failure detecting circuit having switch...
9024477 High voltage power source device and image forming device  
A high voltage power source device includes piezoelectric transformers, each of the piezoelectric transformers being formed with a primary electrode and a secondary electrode on piezoelectric...
9025352 Transformer tap-changing circuit and method of making same  
A transformer tap-changing circuit comprises an apparatus that includes a transformer comprising a secondary winding configured to inductively couple to a primary winding when a current is passed...
9025347 Switching parameter based discontinuous mode-critical conduction mode transition  
An electronic system includes a controller to provide at least dual-mode conduction control of a switching power converter. In at least one embodiment, the controller is capable to control...
9025346 Fly-back power converting apparatus  
A structure of a fly-back power converting apparatus is disclosed. The structure includes a power transistor, a current detector, a pulse width modulation (PWM) signal generator and a current...
9025979 Image forming apparatus and bias power supply apparatus and method  
An image forming apparatus includes an image carrier and the following elements. A charging unit charges the image carrier. An exposure unit exposes the charged image carrier to light and forms an...
9025975 Switching power source and image forming apparatus having the same  
A switching power source is provided, which includes, a transformer, a switching unit configured to switch a voltage supplied to a primary side of the transformer, and an output unit configured to...
9024613 Switching power supply apparatus and semiconductor device  
A switching power supply apparatus includes: an input terminal; an output terminal; a switching element; an input and output converting unit which converts input voltage applied through the...
9025349 Power system and starting method thereof with small changed or unchanged PWM output  
A power system and a starting method thereof includes a power output circuit, a loop circuit, a soft start circuit, and a constant-current source that supplies power to the soft start circuit. The...
9025351 Converter circuit for damping overcurrent oscillations  
An exemplary converter circuit has a converter unit with plural actuatable power semiconductor switches, and the DC voltage side of which is connected to a capacitive energy storage circuit. The...
9024609 Circuit and method for providing hold-up time in a DC-DC converter  
A power conversion system and method includes a DC-DC converter and an auxiliary circuit configured to ensure that a minimum input voltage is provided to the DC-DC converter during power...
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...
9025350 Cascaded H-Bridge medium voltage drive, power cell and bypass module thereof  
The present application relates to a cascaded H-Bridge medium voltage drive, a power cell, and a bypass module thereof, wherein the bypass module is configured for bypassing a major circuit module...
9025348 Drive circuit  
A drive circuit drives a normally-on high-side switch Q1 and a normally-off low-side switch Q2 that form a series circuit connected in parallel with a DC power source. The drive circuit includes a...
9024601 Voltage converting apparatus with low power consumption  
A voltage converting apparatus is disclosed. The voltage converting apparatus includes a pulse width modulation (PWM) signal generating circuit, a power transistor, a first inductor, a second...
9025353 High voltage high current regulator  
High voltage high current regulator circuit for regulating current is interposed between first and second terminals connected to an external circuit and comprises at least one main-current...
9024604 Power circuit  
A power circuit includes a first and a second switches between a input terminal and a reference power source; an inductor between a output terminal and a node between the first and the second...
9024584 Method and system for setting sequential identification to multi-slave in battery pack  
Disclosed is a method for setting sequential ID to a multi-slave BMS in a battery pack, the battery pack including N (N: natural number of 2 or more) slave BMSs having sequential physical...