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In rectifier systems

Subclass of:

363 - Electric power conversion systems

363013000 - CURRENT CONVERSION

363123000 - Using semiconductor-type converter

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Class / Patent application numberDescriptionNumber of patent applications / Date published
363126000 Diode 280
363127000 Transistor 146
363128000 Thyristor 4
20110164442VOLTAGE REGULATOR - Provided are improvements for systems and methods of alternating current (AC) to direct current (DC) power regulation. The system improvements include a regulation circuit having a microprocessor that controls a silicon controlled rectifier circuit. Method improvements include one or more of SCR load sharing, adaptive voltage droop compensation, and/or voltage rebound compensation.07-07-2011
20120120700Method and Apparatus for Regulating AC-DC Adaptor for Low Current Drain - A method and apparatus for controlling the feed rate of a rectified AC pulses via a gated rectifier in a low DC voltage and current power supply. The gated rectifier outputs gated AC pulses to an input capacitor via a current control diode and/or a zener diode and/or a resistor for charging the input capacitor to a voltage level and a charge capacity commensurate with the low voltage regulator and the low DC current drain.05-17-2012
20120163056INPUT CIRCUIT FOR AN ELECTRICAL DEVICE, USE OF AN INPUT CIRCUIT AND ELECTRICAL DEVICE - A switched-mode power supply unit includes a mains input connecting the power supply to a primary supply voltage; an input circuit including a shared electrical path connected to the mains input and including a first mains filter, a first electrical path, connected in series with the shared electrical path, including a second mains filter, a second electrical path connected in series with the shared electrical path and connected in parallel with the first electrical path, and a first switching element that opens the first electrical path; a supply output that provides a filtered primary supply voltage; a switched-mode converter coupled to the supply output that converts the filtered primary supply voltage to a secondary supply voltage; and a control circuit that selectively switches the power supply unit to a first mode of operation with a high power output or a second mode of operation with a reduced power output.06-28-2012
20120230075POWER CONVERSION APPARATUS AND POWER CONVERSION METHOD THEREOF - An apparatus/method is provided. The power conversion apparatus includes: a rectifying unit including a silicon-controlled rectifier thyristor (SCR) for rectifying single-phase power externally inputted; a power factor correcting unit configured to correct a power factor of the power rectified by the rectifying unit; and a control signal generating unit configured to detect a zero-crossing point based on the single-phase power inputted and generate a pulse single of which a width increases as time elapses based on the detected zero-crossing point. The rectifying unit rectifies the single-phase power by using the pulse signal inputted to a gate terminal of the SCR.09-13-2012
Entries
DocumentTitleDate
20100067273SWITCH MODE POWER SUPPLY FOR IN-LINE VOLTAGE APPLICATIONS - A switch mode power supply (03-18-2010
20130088903CONTROL ARCHITECTURE FOR A MULTI-LEVEL ACTIVE RECTIFIER - The present invention is a control architecture for an active rectifier. The control architecture monitors the AC input voltage provided to the active rectifier at a sampling rate grater than the frequency of the AC input voltage and calculates, in response, a phase estimate associated with the monitored AC input voltage that is updated with each new sample of the AC input voltage. Based on the phase and frequency estimates, along with monitoring of the AC input current and DC output voltage, the control architecture calculates voltage commands that are used to generate the pulse-width modulation (PWM) controls signals for provision to solid-state switching devices in the active rectifier.04-11-2013
20130063995Converter Cell For Cascaded Converters And A Control System And Method For Operating A Converter Cell - A cascaded electric power converter and a method of operating a cascaded electric power converter are disclosed. The cascaded converter includes: a converter cell including a cell capacitor and at least one phase leg having at least two electric valves, the at least one phase leg being connected in parallel to the cell capacitor; and a control system for controlling the switching of the electric valves of the at least one phase leg. The control system is configured to, upon detection of a need to by-pass the converter cell, control the switching of the electric valves in a manner so that the cell capacitor is short circuited via a phase leg, so as to obtain a current surge through the phase leg, thereby creating a permanent current path through the converter cell.03-14-2013
20110286250POWER ADAPTATION DEVICE AND POWER SUPPLY MANAGEMENT METHOD - A power adaptation device and a power supply management method thereof are provided. The power adaptation device includes a terminal seat, a detection structure, a detection unit, an electric power modulation unit, an electric power modulation unit, and a control unit. The power supply management method includes the following steps. A detection result of the detection structure is read by the detection unit to judge whether the power terminal is electrically connected to the electronic device. The detection unit notifies the control unit that the power terminal is not connected to the electronic device when judging that the power terminal is not connected to the electronic device. The control unit controls the electric power modulation unit to stop supplying power to the electric power modulation unit to reduce a total power consumption of the electric power modulation unit.11-24-2011
20110267860POWER CONTROL SYSTEM - A power control system includes a rectifier circuit, a buck circuit, a voltage divider circuit, a control circuit, and a switch circuit. A first terminal of the rectifier circuit is connected to an alternating current (AC) power supply. A second terminal of the rectifier circuit is connected to a first terminal of the buck circuit and a first terminal of the voltage divider circuit. A first terminal of the control circuit is connected to a second terminal of the buck circuit. A second terminal of the control circuit is connected to a second terminal of the voltage divider circuit. A third terminal of the control circuit is connected to the switch circuit. The switch circuit is connected to the AC power supply and an electronic device.11-03-2011
20090285000ADAPTER WITH TRANSFORMATIVE COMPONENT - An adapter for removably coupling a consumer electronic device to a host, with the adapter supplying a first service between the host and the consumer electronic device when the adapter is coupled to the host and the consumer electronic device is coupled to the adapter, and the adapter further supplying a second service to the consumer electronic device when the adapter and the consumer electronic device are removed from the host. The adapter can further include a power source including a transformative component that transforms power supplied by the host.11-19-2009
20090016088SEMICONDUCTOR ASSEMBLY - A semiconductor assembly is disclosed. One embodiment provides a first semiconductor and a second semiconductor, each having a first main connection and a second main connection arranged on opposite sides, and a carrier having a patterned metallization with a first section spaced apart from a second section. The first semiconductor is electrically connected to the first section by its second main connection, and the second semiconductor electrically connected to the second section by its second main connection. The first semiconductor chip first main connection and the second semiconductor chip first main connection are electrically connected to one another and for the connection of an external load or of an external supply voltage.01-15-2009
20090034305Power Conversion Device and Power Conversion System - A power conversion device includes input terminals, first output terminals, second output terminals, and an insulation transformer. The insulation transformer includes a primary coil and a secondary coil of equal inductance. The polarity of one end of the primary coil is same as the polarity of the other end of the secondary coil. One of the first output terminals is connected to an input terminal and the one end of the primary coil. The other of the first output terminals is connected to an input terminal and one end of the secondary coil. One of the second output terminals is connected to the other end of the primary coil and the other end of the secondary coil. The other of the second output terminals is connected to an input terminal.02-05-2009
20090097290Isolated Power Converter - An isolated power converter that includes, in one embodiment, a first magnetic core having a primary winding and a secondary winding around the first magnetic core. The power converter includes a second magnetic core having a first leg, a second leg coupled to the first leg, and a third leg coupled to the first and second legs, wherein a part of the third leg is equidistant from the first leg and the second leg. The power converter also includes a first winding encircling the first leg, a first end of the first winding coupled to the secondary winding, a second winding encircling the second leg, a first end of the second winding coupled to the secondary winding, and a third winding encircling the third leg, a first end of the third winding coupled to a second end of the first winding and to a second end of the second winding.04-16-2009
20090190384POWERING A POWER SUPPLY INTEGRATED CIRCUIT WITH SENSE CURRENT - A power control system and method senses input and/or output voltages of a power supply using sense currents in order for an integrated circuit (IC) switch state controller to generate a control signal to control a switch of the power control system. By sensing sense currents, the power control system can eliminate at least one sense resistor used in a voltage sense system. The sense current(s) can be used to provide power and sensing to the switch state controller. In at least one embodiment, the sense current(s) provide power to the switch state controller when auxiliary IC power is unavailable or diminished, such as during start-up of the IC. In at least one embodiment, the IC draws more sense current from an input of the power control system than the output of the power control system to, for example, minimize impact on the output voltage of the power supply.07-30-2009
20110013434POWER CONVERTER WITH EXTREMELY LOW STANDBY POWER CONSUMPTION - The present invention relates to a power converter with extremely low standby power consumption. The power converter comprises a rectification module having at least one unilateral switch which has a control terminal, an anode terminal and a cathode terminal. The control terminal is coupled to a control signal, wherein when the control signal issues a first level, the channel between the anode terminal and the cathode terminal is enabled to act as a unilateral switch; and when the control signal issues a second level, the channel between the anode terminal and the cathode terminal is open circuited.01-20-2011
20090161396Synchronous rectifier control device and forward synchronous rectifier circuit - Disclosed are a synchronous rectifier control device and a forward synchronous rectifier circuit. The synchronous rectifier control device is coupled with the secondary side of the forward synchronous rectifier circuit, comprising a condition detecting unit, a reference time circuit and a synchronous signal generator. The condition detecting unit receives at least one reference signal and a detecting signal in response to the condition of the secondary side of the forward synchronous rectifier circuit, and accordingly generates a first synchronous control signal. The reference time circuit is coupled with the condition detecting unit, and generates a reference time signal in response to the first synchronous control signal. The synchronous signal generator generates a second synchronous control signal in response to the first synchronous control signal and the reference time signal.06-25-2009
20090086518Switching mode power supplies with digital electromagnetic interference control - A method of programming a switching mode power supply before or after the power supply is installed in a system to control electromagnetic interference. The switching mode power supply includes at least one switching device and a digital controller. The digital controller adjusts a switching frequency of the at least one switching device based on one or more programmable parameters. The method includes programming the digital controller with the one or more programmable parameters via a user interface. The programmable parameter(s) define a switching frequency adjustment to control electromagnetic interference.04-02-2009
20110228576Mains Plug Component - The invention relates to a mains plug component with a housing and a mains switch component arranged in the housing comprising a first stage for rectifying a mains AC voltage and a second stage for generating a DC voltage from the rectified mains AC voltage. The first stage comprises an electromechanical switch, by means of which a first or second voltage range may be selected. The housing has a section for a pin of an inserted plug piece such that, on insertion, the switch is activated by the inserted pin. The plug piece for insertion has no pin for the first voltage range and a pin for the second voltage range.09-22-2011
20090251935Multi-Pulse Rectifier for AC Drive Systems having Separate DC Bus Per Output Phase and Multiple Isolation Transformers - An 18n-pulse rectifier for AC drive systems having a separate DC bus for each output phase is provided, where n=any positive integer. The rectifier uses three separate phase rectifiers, one for each output phase of a transformer, each comprised of 2n six-pulse diode bridges connected in series or parallel. Each phase rectifier may be supplied with n unique sets of phase inputs from a transformer secondary winding. In some configurations, the n sets of inputs provided to each rectifier are separated by 60/n degrees of phase (when n is greater than 1), while the corresponding inputs to neighboring rectifiers are separated by 20/n degrees of phase. In a 36-pulse example, the phase offsets for the inputs provided to the rectifiers may be −25° and +5° from the transformer primary winding (for the first rectifier), −15° and +15° from the primary winding (for the second rectifier) and −5° and +25° from the primary winding (for the third rectifier). Each set of inputs may include three lines of in-phase current, and may be coupled to one of the six-pulse diode bridges. In some configurations, two identically-wound transformers may be used to supply output voltages to the rectifiers. The transformers may each supply the same phase offsets to each rectifier, in accordance with the methodology above, which may support higher-capacity applications.10-08-2009
20120195082Systems and Methods for High Speed Power Factor Correction - Systems and methods described herein provide for high speed power factor correction which can overcome or substantially alleviate the problems associated with changes in the operating conditions of a load or other transient events. The present technology senses the present state conditions of a signal to quickly and accurately determine the presence of an overtone component within the signal. The expected value of the overtone component is then determined based on the sensed state of the signal. Power factor correction is then performed to suppress the overtone utilizing a control signal formed based on the expected value of the overtone. By performing power factor correction based on the expected value, the present technology can provide high speed power factor correction which is not limited by the delay introduced by an adaptive feedback loop.08-02-2012
20100226155POWER SUPPLY WITH INTEGRATED CONCENTRIC HIGH VOLTAGE MULTIPLIER - A high voltage power supply for use in small diameter spaces such as in oil well logging devices includes an AC voltage source and a voltage multiplier circuit. An inside set of parallel capacitors is constructed with an inside common capacitor electrode, an inside dielectric material around the outside of the inside common capacitor electrode, and individual inside capacitor electrodes formed of conductive material positioned around the outside of the inside dielectric material. An outside set of parallel capacitors is constructed with a hollow outside common capacitor electrode with a central internal hollow space, an outside dielectric material around the inside of the outside common capacitor electrode, and individual outside capacitor electrodes formed of conductive material positioned around the inside of the outside dielectric material. The inside set of parallel capacitors fits concentrically inside the outside set of parallel capacitors. Rectifiers connect selected inside capacitors to selected outside capacitors to form a voltage multiplier circuit.09-09-2010
20110235379CURRENT SHARING POWER SYSTEM - A power system controller includes multiple channels and each channel has a current sharing controller that is coupled to a shared current signal bus and a shared voltage signal bus.09-29-2011
20100054004METHOD AND APPARATUS FOR PHASE CURRENT BALANCE IN ACTIVE CONVERTER WITH UNBALANCED AC LINE VOLTAGE SOURCE - Active power converters and methods are presented for converting input electrical power to output electrical power with converter switching control in which the individual phase voltage command values are compensated according to phase line voltage imbalances to compensate the converter control to provide balanced phase currents in the presence of unbalanced phase supply line voltages.03-04-2010
20090016089Electromechanical power transfer system with even phase number dynamoelectric machine and three level inverter - An electromechanical power transfer system that converts direct current (DC) electrical power to variable mechanical power, comprises: a source of DC that has a neutral ground, a positive potential output with a level of electrical potential that is positive relative to the neutral ground and a negative potential output with a level of electrical potential that is negative relative to the neutral ground; a multiphase alternating current (AC) dynamoelectric machine with an even number of phases; and a neutral point clamped (NPC) inverter system that receives electrical power from the positive and negative potential outputs the DC source to generate multiphase AC power for the dynamoelectric machine with the same number of even phases that exhibits no common mode potential/noise.01-15-2009
20100020580HIGH-VOLTAGE POWER SUPPLY - A high-voltage power supply includes a first circuit which is realized on a first board, receives a first voltage, and generates a second voltage according to the first voltage, and a second circuit which is realized on a second board stacked on the first board and amplifies the second voltage and then rectifies the amplified second voltage.01-28-2010
20120307535POWER SUPPLY APPARATUS - There is provided a power supply apparatus supplying driving power. The power supply apparatus includes: a first power converter bypassing input power when a voltage level of the input power having a predetermined voltage level is within a reference voltage level range, and converting the input power to DC power having a preset voltage level when the voltage level of the input power is outside of the reference voltage level range; and a second power converter converting the power inputted from the first power converter to driving power having a preset voltage level.12-06-2012
20110305054BI-DIRECTIONAL SWITCH, ALTERNATING-CURRENT TWO-WIRE SWITCH, SWITCHING POWER SOURCE CIRCUIT, AND METHOD OF DRIVING BI-DIRECTIONAL SWITCH - A semiconductor device 12-15-2011
20110103112CURRENT SENSING SIGNAL COMPARING DEVICE, AND CURRENT SENSING SIGNAL COMPARING METHOD - Provided is a current sensing signal comparing device and current sensing signal comparing method. The invention includes a current sensing circuit for detecting a current signal of a switching circuit and thereby generating a current sensing signal, a control unit for outputting a control signal, and a compensating circuit for compensating the current sensing signal according to the control signal. The compensated current sensing signal is compared with a constant current reference signal in order to issue a constant current control signal. The other aspect of the invention is provided to configure the compensating circuit to compensate the constant current reference signal, such that the current sensing signal is compared with the compensated constant current reference signal in order to issue a constant current control signal.05-05-2011
20120163051Cold swap load adaptive power supply - In some embodiments, a power supply may include a power factor correction (PFC) circuit to receive an input voltage signal and to provide an intermediate PFC output voltage signal, the PFC circuit including at least a first PFC stage and a second PFC stage, a converter circuit to convert the intermediate PFC output voltage signal to an output voltage signal, the converter circuit including at least a first converter stage and a second converter stage, and a control circuit to monitor at least one of the input voltage signal, the intermediate PFC output voltage signal, and the output voltage signal and to switch between respective pairs of the first PFC stage and first converter stage and the second PFC stage and the second converter stage based on the monitored signals. For example, the first PFC stage and first converter stage may provide relatively more efficient performance over a first output power range and the second PFC stage and second converter stage may provide relatively more efficient performance over a second output power range. Other embodiments are disclosed and claimed.06-28-2012
20120176825Auxiliary automotive power supply - The purpose for this device is to provide electrical power to an automotive electrical control system from a residential electrical service. The power from an auxiliary power supply will maintain the operational data stored within the memory of the automotive computer and data within other electronic devices. This is accomplished by maintaining an energized electrical system, which will prevent the normal discharge of the battery due to parasitic loads. This device has precise voltage regulation to maintain the proper voltage level of the electrical system with or without the normal storage battery being present, Parasitic loads are those loads that require electrical energy when the automobile engine is not running.07-12-2012
20100008116MODULAR CONTROL AND DRIVING DEVICE AND HIGH VOLTAGE POWER SUPPLY HAVING THE SAME FOR IMAGE FORMING APPARATUS - A control and driving device of a high voltage power supply (HVPS) of an electronic apparatus, such as an image forming apparatus, including an input to receive a signal supplied to the HVPS, a control and driving circuit to control and drive the signal received at the input, and an output to output the controlled and driven signal to a transformer of the HVPS, wherein the input, control and driving circuit, and output are integrated into one physical module.01-14-2010
20110122667RECTIFIER CIRCUIT - A high power factor rectifier circuit, provided with switching sections connected to an AC power supply for converting an AC voltage to a DC voltage, is formed with a bypass circuit provided. The bypass circuit, when the voltage of the AC power supply becomes higher than the voltage across a smoothing capacitor provided on the DC output side, makes a charge current flowing from the AC power supply to the capacitor bypass the switching section by making the switching section out of conduction. Thus, a rectifier circuit is provided which can be safely operated without causing any damage, or with minimized damage, even though an inrush current flows at turning-on the power or at recovery from a power interruption.05-26-2011
20110255317INTELLIGENT MULTI-STAGE VARIABLE-POWER SWITCH POWER SUPPLY DEVICE - An intelligent multi-stage variable-power switch power supply device has an output of a bridge rectifier connected with the input of an EMI filter and the output of the EMI filter connected with a single chip through a standby topology and is connected with two or more different power topologies through different MOSFET switches respectively. The standby topology is connected with a load through a standby current sensor and a load detection circuit in turn and with the different power topologies being connected with loads through respective corresponding working current sensors. The output of standby current sensor, the outputs of the working current sensors and the output of the load detection circuit are connected with the input of the single chip respectively, while the output of the single chip is connected with the inputs of a plurality of MOSFET switches to control the on and off states of the different power topologies. The intelligent multistage variable-power switch power supply device of the invention can automatically select a proper power topology according to the load change, reduce the influences of load change on power supply efficiency and improve power supply efficiency.10-20-2011
20110157939POWER ADAPTER APPARATUS AND POWER MANAGEMENT METHOD - A power adapter apparatus and a power management method thereof are disclosed in the invention. The power adapter includes an output interface and a power modulation unit. The power adapter can be electrically connected with an electronic device through the output interface. There is a detective structure disposed on the output interface. The power management method includes steps of: 1) detecting whether the power adapter apparatus is electrically connected with the electronic device by the detective structure; and 2) when the output interface is detected to be disconnected from the electronic device, switching the power modulation unit to a standby state, so as to reduce a total power consumption of the power modulation unit.06-30-2011
20130021830INSULATION IN A POWER TRANSMISSION SYSTEM - A substation has a converter comprising a first set (S01-24-2013
20130094262System and Method for Exchangeable Capacitor Modules for High Power Inverters and Converters - A method of and system for monitoring condition of a large capacitor connected across an output of a rectifier circuit in an operating electrical power transmission circuit in order to anticipate capacitor failure and facilitate appropriate corrective action is disclosed. The method includes measuring a ripple voltage on the capacitor and ripple current through the capacitor, determining from a representative signal whether the signal exceeds a predetermined threshold; and sending an output to a controller on a system operator if the signal exceeds the predetermined threshold. The ripple current and ripple voltage measurements may be provided as inputs to a digital to analog converter which produces and sends the representative signal to a microprocessor to generate the output to the controller.04-18-2013
20090103342SILICON-CONTROLLED RECTIFIER WITH A HEAT-DISSIPATING STRUCTURE - A silicon-controlled rectifier with a heat-dissipating structure has a heat sink, a silicon-controlled rectifying assembly, an outer contact assembly, a gate-contact assembly and a clamp. The heat sink is electrically and thermally conductive and has an inner contact surface and multiple fastener holes being formed in the flat surface around the inner contact surface. The silicon-controlled rectifying assembly is mounted on the inner contact surface and has a silicon-controlled rectifying device having a gate. The outer contact assembly is mounted on the silicon-controlled rectifying device. The gate-contact assembly is mounted against the gate of the silicon-controlled rectifying device. The clamp is mounted on the outer contact assembly and screwed to the fastener holes around the inner contact surface of the heat sink, connects to the heat sink and holds the outer contact assembly and the silicon-controlled rectifying assembly.04-23-2009
20110211378Utility for full wave rectified current-fed class of DC galvanically isolated DC-to-DC power conversion topologies allows reduction of working voltage magnitudes and improvement to efficiency for secondary circuits - New utility of an existing class of DC galvanically isolated current sourcing circuit topologies for power conversion simultaneously allows improvement in its secondary circuit(s) to power conversion efficiency and reduction in working voltage magnitudes, or simply reduction in working voltage magnitudes, with resulting benefits for reduction in manufacturing cost, reduction in size and weight, and increase in market acceptance, or may simply allow secondary circuit(s) to enable easier provisioning of safety, improvement in reliability, or improvement in efficiency. The magnitude of DC output voltage is optimized at higher value for greater efficiency, while simultaneously optimizing the secondary circuit's working voltage maximum magnitude at a lower value for greater safety. The method requires full cycle current-compliant input impedance of the secondary power source whereby the secondary of the DC galvanically isolating device behaves in a mode of being a full cycle voltage-compliant current source.09-01-2011
20130182479VARIABLE VOLTAGE REFERENCE IN POWER RECTIFICATION - A power rectification system includes power electronics configured to rectify an alternating current (AC) waveform to produce a direct current (DC) output voltage, a control circuit configured to control the power electronics based upon an error value, and a voltage reference control portion configured to provide the error value based upon a variable voltage reference and the DC output voltage. The variable voltage reference varies between the DC output voltage and a fixed voltage reference.07-18-2013

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