Abstract: A correction control module for a power factor correction circuit comprises a current sampling unit, an adjustment unit and a control unit. The current sampling unit generates a sampling current based on the operation of a power factor correction circuit. The adjustment unit is connected to the current sampling unit and receives the sampling current. The adjustment unit is composed of a fixed resistance branch and a variable resistance branch connected in parallel with the fixed resistance branch, and the variable resistance and fixed resistance branches receive the sampling current to generate a node voltage. The control unit controls a resistance of the variable resistance branch based on an input voltage and an output voltage of the power factor correction circuit. Thus, an equivalent resistance of the variable resistance branch and the fixed resistance branch is changed according to an operating state of the power factor correction circuit.

Abstract: Low cost and low power LED lamps exhibit current harmonic contents due to their nonlinear characteristics. A large scale lighting network requires tens to hundreds LED lamp installations, the resultant harmonic currents pollute the grid seriously. Furthermore, light intensity fluctuations are becoming a concern nowadays to many users, as a safety and a health problems. This phenomenon is mainly caused by heavy loads as they lead to voltage fluctuations and deteriorating in PQ and hence visual flickering in LED lamps. A single phase transformer-less unified power quality conditioner (UPQC) topology is provided with its controls to mitigate all PQ problems in a network.

Abstract: A power converter includes: an input-side converter including a positive-side capacitor arranged between a positive terminal and a neutral terminal as well as a negative-side capacitor arranged between a negative terminal and the neutral terminal; a first converter connected to the positive terminal and the neutral terminal; and a second converter, an input side thereof being connected to the negative terminal and the neutral terminal, with the input side also being connected in series to the first converter, and the output side thereof being connected in parallel to the first converter.

Abstract: A power supply for providing power to a load includes a main rectifier having first and second rectifier input terminals coupled to an alternating current (AC) power source, which converts AC power from the AC power source into a first direct current (DC) power signal at first and second rectifier output terminals, across which an energy storage device is coupled. A DC-DC power converter (e.g., a PFC circuit) comprises an integrated circuit (IC) and converts the first DC power signal into a second DC power signal in response to a multiplier signal received at a multiplier input of the IC. A multiplier input circuit as disclosed herein is coupled to the first and second rectifier input terminals and provides the multiplier signal to the multiplier signal input terminal, wherein the multiplier input circuit is decoupled from the energy storage device via the main rectifier.

Abstract: An integrated and isolated onboard charger for plug-in electric vehicles, includes an ac-dc converter and a dual-output dc-dc resonant converter, for both HV traction batteries and LV loads. In addition, the integrated and isolated onboard charger may be configured as unidirectional or bidirectional, and is capable of delivering power from HV traction batteries to the grid for vehicle-to-grid (V2G) applications. To increase the power density of the converter, the dual-output DC-DC resonant converter may combine magnetic components of resonant networks into a single three-winding electromagnetically integrated transformer (EMIT). The resonant converter may be configured as a half-bridge topology with split capacitors as the resonant network components to further reduce the size of converter. The integrated charger may be configured for various operating modes, including grid to vehicle (G2V), vehicle to grid (V2G) and high voltage to low voltage, HV-to-LV (H2L) charging.

Abstract: The converter device includes a rectification circuit that receives, as an input, AC power from an AC power supply, and performs full-wave rectification on the AC power received, a booster circuit that boosts an output voltage from the rectification circuit, a smoothing capacitor that smooths an output voltage from the booster circuit, and outputs a voltage smoothed, to the load, and a controller that controls the booster circuit. The booster circuit includes a plurality of booster sections each of which includes a reactor, a switching element, and a reverse-blocking diode. The controller maintains, in an ON state, the switching element included in at least one of the plurality of booster sections for a predetermined time period to determine the presence or absence of a fault of the booster section.

Abstract: In some examples, a device comprises a power conversion circuit that includes: an inductor having a first end coupled to an input voltage terminal; a first switch coupled to a second end of the inductor at a first node; a second switch coupled to the second end of the inductor and the first switch at the first node; a third switch coupled to the first switch and to another input voltage terminal at a second node; and a fourth switch coupled to the second switch and to the another input voltage terminal at the second node. The device also comprises a control circuit comprising a variable delay circuit coupled to the first and second switches; and a controller coupled to the variable delay circuit, to an inductor current sensor, and to an input voltage sensor, the inductor current sensor coupled to the inductor and the input voltage sensor coupled to the input voltage terminal and the another input voltage terminal.

Abstract: A method of recovering a voltage drop at an output terminal of a voltage compensation circuit connected to a load including a variable load current according to a condition of the load. A circuit portion for a regulator having an output terminal connected to a load including a variable load current may be provided. The circuit portion may include a plurality of stages connected in parallel to said output terminal. Each of said stages may be configured as a current driver having an output connected to the output terminal of said regulator. The circuit portion may include a comparator in each of said stages configured for receiving from a first input a reference voltage value and a predetermined threshold voltage from an other input. Each of said stages may receive a corresponding different threshold voltage value on said other input. The threshold voltage values may be correlated to the variable load current.

Abstract: A power supply system includes at least one inverter, at least one cell string, and a transformer, where an input end of the at least one inverter is connected to an output end of the at least one cell string, an output end of the at least one inverter is connected to an input end of the transformer, and an output end of the transformer is configured to output a power supply voltage. The output end of the at least one inverter is connected to an output end of an inverter unit.

Abstract: Flexible AC transmission system (FACTS) enabling distributed controls is a requirement for power transmission and distribution, to improve line balancing and distribution efficiency. These FACTS devices are electronic circuits that vary in the type of services they provide. All FACTS devices have internal circuitry to handle fault currents. Most of these circuits are unique in design for each manufacturer, which make these FACTS devices non-modular, non-interchangeable, expensive and heavy. One of the most versatile FACTS device is the static synchronous series compensator (SSSC), which is used to inject impedance into the transmission lines to change the power flow characteristics. The addition of integrated fault current handling circuitry makes the SSSC and similar FACTS devices unwieldy, heavy, and not a viable solution for distributed control. What is disclosed are modifications to FACTS devices that move the fault current protection external to the FACTS device and make them modular and re-usable.

Abstract: The present disclosure relates to a power management circuit and a mobile terminal having a first switch for blocking current. The first switch blocks an input of an external power supply in a case that a predetermined load operates in a large current/voltage mode. A bi-directional DC converter boosts a battery voltage and supplies it to the load. Thus, the circuit is simplified and the number of components is reduced for power management.

Abstract: A device and method for calculating switching time. The device includes: a digital calculator configured to calculate a next on time according to an output voltage signal and an inductor current signal detected during an on period of a switching element and calculate a next off time according to the next on time, an input voltage signal and the output voltage signal; and a signal generator configured to generate a pulse width modulation signal for controlling the switching element, according to the next on time and the next off time. Therefore, a digital controlling manner is provided, not only the number of components and the cost are decreased, but also detection accuracy is improved with a simple structure.

Abstract: A multi-phase power supply for stepdown system includes a plurality of first stage voltage converters, a plurality of second stage voltage converters and a controller. The first stage voltage converters are under open-loop control, and the second stage voltage converters are under close-loop voltage regulation control. The first stage voltage converters convert an input voltage to generate a midway voltage. The second stage voltage converters convert the midway voltage to generate an output voltage. The controller receives the output current of each phase of the first stage voltage converters and the second stage voltage converters, the input voltage, the midway voltage of each phase and the output voltage. The controller adjusts a number of enabled phases and balances the output current according to the output currents, and outputs stable power according to the input voltage, the midway voltage and the output voltage.

Abstract: A motor drive that enables the elimination of distortion of a motor current caused by direct current voltage ripples with the use of a smoothing capacitor having a small capacity and refrigeration equipment. A motor drive includes a rectifier circuit, a smoothing capacitor, voltage detector, an inverter circuit, current sensor, and a controller configured to control the inverter circuit. The controller has a voltage controller configured to generate a voltage command value used for controlling the motor, a ripple frequency arithmetic unit configured to operate a ripple frequency included in the direct current voltage signal, and a harmonic suppressor configured to process a signal based on the direct current signal using an S controller having a gain near the ripple frequency and output a corrected amount. The inverter circuit is controlled based on a signal that the voltage command value is corrected using the corrected amount.

Abstract: A zero current detection circuit includes: one detection winding that is magnetically coupled to a boost inductor of a bridgeless totem pole PFC for converting an AC input voltage to a DC output voltage, has one end connected to ground, and generates a zero current detection signal, which changes in proportion to a boost inductor voltage, at another end; a resistor with one end connected to the other end of the detection winding; a clamp composed of two diodes connected to each other in series with a same forward direction, which clamps the inputted zero current detection signal to the ground potential and a positive power supply voltage to convert to a rectangular signal; and a pulse outputter with a comparator which compares the rectangular signal and a comparison voltage and outputs detection pulses with falling edges that are synchronized with an inductor current reaching zero.

Abstract: Fault protection of a voltage source converter is provided. An apparatus has a chain-link circuit in series with a director switch. The chain-link circuit includes cells including an energy storage element and cell switching elements connected with anti-parallel diodes. Each cell switching element has a cell switching element controller. The director switch includes director switch units, each having a director switching element and a director switch unit controller. Each cell switching element controller monitors for a fault current and turns-off its associated cell switching element and reports a fault event to a fault controller. Each director switch unit controller monitors for a fault current and reports a fault event to the fault controller but the director switch unit control keeps its associated director switching element turned-on. The fault controller monitors for reports of fault events to order the cell switching elements of at least some of the cells to turn-off.

Abstract: A voltage feedback circuit for a power factor correction circuit couples an output voltage to a voltage feedback input terminal of the power factor correction circuit. The voltage feedback circuit includes a first voltage sensing resistor, a second voltage sensing resistor and a third voltage sensing resistor. A stabilization capacitor is connected across the third voltage sensing resistor. During a normal mode of operation, a feedback voltage has a magnitude determined by the first, second and third voltage sensing resistors. When the output voltage increases rapidly, the stabilization capacitor bypasses the increased voltage around the third voltage sensing resistor to cause the magnitude of the feedback voltage to be determined by only the first and second voltage sensing resistors. The power factor correction circuit detects a transient overvoltage condition at a lower output voltage than if the third voltage sensing resistor were not bypassed.

Abstract: A system such as an electric meter includes a single-ended analog-to-digital converter which is susceptible to crosstalk. Methods and apparatus are disclosed to calibrate and cancel crosstalk effects. The system determines whether voltage-induced cross-talk is in-phase or out-of-phase with respect to voltage. The system determines a first calibration factor based on minimum and maximum measured current values and voltage. If the cross-talk is in-phase, the system sets a second calibration factor to 0. If the cross-talk is out-of-phase, the system computes the second calibration factor based on a measured current when a power factor angle is set to 90 degrees. Calibration factors may be stored in the multi-channel system. In use, the system measures current and voltage and computes the actual current, voltage and power based on the measured current and voltage by employing a crosstalk cancellation technique using the calibration factors.

Abstract: Methods and systems for power management using a power converter in transport are provided. In one embodiment, the method includes monitoring a varying AC input to the power converter. The method also includes calculating a power factor adjustment based on the monitored varying AC input. Also, the method includes a power converter controller adjusting the power converter based on the calculated power factor adjustment to cause the power converter to supply a reactive current to a varying AC load.

Abstract: A reactive power compensator includes a first converter connected between a first line and a second line, a second converter connected between the second line and a third line, and a third converter connected between the third line and the first line. The first to third lines may be connected to a bus. The first converter may include a first cluster including first to nth submodules which are serially connected to one another and each include a first capacitor and a first discharging connection unit connected to the first capacitor so that, when driving of the reactive power compensator stops, the first capacitors of the first to nth submodules are electrically connected to one another.

Abstract: An AC-DC converter with a dual-rectification full bridge interleaved single stage PFC circuit and its control method are disclosed. The converter uses two switching components of a full bridge converter to alternately drive two boost inductors, which eliminates the use of two boost switching components and two boost rectifiers required in a conventional interleaved boost PFC circuit, and also saves individual PWM PFC control circuit.

Abstract: A control circuit is configured to sense an AC input voltage of a power factor correction (PFC) power circuit in a switching power converter, provide a control signal having an on-time and an off-time to at least one power switch of the PFC power circuit, and in response to detecting a peak voltage of the AC input voltage, increase the on-time of the control signal based on the sensed AC input voltage during an interval that begins with the peak voltage of the AC input voltage and ends with the next zero crossing following the peak voltage of the AC input voltage to improve a power factor of the switching power converter. Other example switching power converters, PFC power circuits and control circuits for controlling one or more power switches are also disclosed.

Abstract: A dual-rectification bridge type single stage PFC converter circuit includes a boost circuit working together with a bridge type DC-DC converter. The bridge type DC-DC converter may include low side and high side switching components like BUCK, half bridge, full bridge, etc. This PFC converter circuit drives the boost inductor of the boost circuit by using the switching components of the bridge type DC-DC converter, which eliminates the use of boost switching components and boost rectifiers in conventional boost PFC circuits, also eliminates the use of individual PWM PFC control units.

Abstract: A power factor correcting (PFC) boost converter is to convert an input to an intermediate DC signal. A direct current (DC)-DC converter is to receive the intermediate DC signal and generate an output associated with an online condition. In response to a light-load indication, the PFC boost converter is to assume a disabled status to pass a rectified input to the DC-DC converter. The DC-DC converter is to convert the rectified input to generate the output associated with a light-load condition. The light-load condition output is provided at a voltage lower than the online condition output.

Abstract: A non-linear load in the form of an arc furnace with an upstream furnace transformer is supplied with electric power from a power supply device with a plurality of converter units. The converter units have a plurality of main modules with inputs connected to a respective phase of a three-phase grid. The converter units have a common star point between the main modules and the primary side of the furnace transformer. Each main module has a series circuit with a coupling inductance and a plurality of submodules. The submodules have a bridge circuit with four self-commutated semiconductor switches and a bridge path with a storage capacitor between input and output. The semiconductor switches of the submodules can each be switched independently of the semiconductor switches of the other submodules of the same main module and of the other main modules.

Abstract: A switched voltage converter may be controlled with load current feedforward control loop in addition to an output voltage feedback loop. The converter includes a first switch device that is controlled to open and close at a selected switching rate with a selected duty cycle. The first switch device is coupled in series with an inductor and conducts current through the inductor while the first switch is closed. A second switch device conducts current from the inductor to an output capacitor and to load while the first switch is open to produce an output voltage and a resulting load current through the load. The load current is measured in a continuous manner and a load current feedforward control signal is generated that is representative of the load current. The switch rate and/or duty cycle of the first switch is adjusted in response to the load current feedforward control signal.

Abstract: A controller includes a switch controller, a current limit generator, a jitter modulator, and an arithmetic operator circuit. The switch controller is coupled to generate a drive signal to control switching of a power switch in response to a current sense signal and a modulated current limit signal to control a transfer of energy from an input of a power converter to an output of the power converter. The current limit generator is coupled to generate a current limit signal. The jitter modulator is coupled to generate a jitter signal for jittering a switching period of the drive signal without an oscillator. The arithmetic operator circuit is coupled to receive the current limit signal and the jitter signal and is coupled to generate a modulated current limit signal in response to the current limit signal and the jitter signal.

Abstract: A boost converter device includes a first boost converter, a second boost converter, and a first electronic control unit. The first electronic control unit being configured to control switching of a first upper arm based on a first pulse width modulation signal and to control switching of a first lower arm based on a first inverted signal acquired by inverting the first pulse width modulation signal. The first electronic control unit is configured to control switching of a second lower arm based on a second pulse width modulation signal and to control switching of a second upper arm based on a second inverted signal acquired by inverting the second pulse width modulation signal.

Abstract: Aspects of capacitor voltage ripple reduction in modular multilevel converters are described herein. In one embodiment, a power converter system includes a modular multilevel converter (MMC) electrically coupled and configured to convert power between two different power systems. The MMC includes one or more phase legs having a cascade arrangement of switching submodules, where the switching submodules include an arrangement of switching power transistors and capacitors. The MMC further includes a control loop including a differential mode control loop and a common mode control loop. The differential control loop is configured to generate a differential control signal based on a target modulation index to reduce fundamental components of voltage ripple on the capacitors, and the common mode control loop is configured to inject 2nd order harmonic current into a common mode control signal to reduce 2nd order harmonic components of the voltage ripple on the capacitors.

Abstract: A system includes a DC to DC converter coupled with a load, a power source bus coupled with an input of the DC to DC converter, a capacitor coupled in parallel across an output of the DC to DC converter and a controller. The controller may dynamically adjust a bus voltage set point of a bus voltage on the output of the DC to DC converter up or down to prepare for supply of the bus voltage and energy stored in the capacitor to an anticipated load event. The load event may have a load step change that occurs in less than five milliseconds and is greater than about eighty or eighty-five percent of a rated output of the DC to DC converter.

Abstract: In some examples, a device comprises a power conversion circuit that includes: an inductor having a first end coupled to an input voltage terminal; a first switch coupled to a second end of the inductor at a first node; a second switch coupled to the second end of the inductor and the first switch at the first node; a third switch coupled to the first switch and to another input voltage terminal at a second node; and a fourth switch coupled to the second switch and to the another input voltage terminal at the second node. The device also comprises a control circuit comprising a variable delay circuit coupled to the first and second switches; and a controller coupled to the variable delay circuit, to an inductor current sensor, and to an input voltage sensor, the inductor current sensor coupled to the inductor and the input voltage sensor coupled to the input voltage terminal and the another input voltage terminal.

Abstract: A control unit rod interface arrangement couples between AC and DC power systems. The interface includes at least two poles for coupling between the DC and AC power systems. Each of the poles includes a converter for conversion between AC and DC power. If a fault has occurred in one of the poles, a transient current, or fault current, may flow through a neutral bus line connected to the pole, the pole's converter and the location of the fault in the pole. Such a transient or fault current should preferably be damped out as quickly as possible, after which the pole may be electrically isolated from the other components of the interface arrangement.

Abstract: Methods and systems for continuous gain control in a feedback transimpedance amplifier (TIA) may include: in a TIA including a gain stage, a feedback resistance for the gain stage, a current sense resistor, and a feedback current control circuit: receiving an input current at an input of the gain stage: directing a current through the current sense resistor to the feedback current control circuit, and generating an output voltage proportional to the input current and a gain of the TIA. The gain may be configured by providing a proportion (?) of the current through the feedback current control circuit to the input of the gain stage. The proportion ? of the current from the feedback current control circuit to the input of the gain stage may be configured by applying a differential voltage to control terminals of a transistor pair in the feedback current control circuit.

Abstract: A method and device for detecting inductor current of a PFC circuit are disclosed, which relates to the field of power supply technology. The method includes: detecting a voltage on a boost inductor of a critical-conduction mode PFC circuit, and obtaining an inductor voltage detection signal (S1); converting the inductor voltage detection signal into a voltage signal whose waveform is consistent with a current waveform of the inductor to serve as an inductor current detection signal, to perform loop protection on the PFC circuit or perform over-current protection on the PFC circuit by using the inductor current detection signal (S2).

Abstract: The present invention relates to an inverter device for a microgrid, and a method for controlling the same, the inverter device including: a waveform detector detecting a voltage waveform and a current waveform applied to a load; a control unit determining whether a sine wave appears based on the detected voltage waveform and the detected current waveform and performing voltage control or low order harmonic compensation depending on a determination result; and a switch generating a voltage waveform in a form of the sine wave by being turned on/off depending on a control signal received from the control unit and supplying the generated voltage waveform in the form of the sine wave to the load.

Abstract: A device load consumes power supplied from an AC power supply. A bypass circuit is provided in parallel with the device load. A controller controls current flowing through the bypass circuit so that an identification signal indicating information for identifying an electric device is superimposed on current flowing from the AC power supply to the electric device. A power measurement sensor detects the current flowing from the AC power supply to the electric device. A control device identifies the electric device based on the identification signal superimposed on the current detected by the power measurement sensor.

Abstract: A magnetic waveform generator circuit includes a first switch coupled to a first rectifier element at a first node, a first capacitor coupled, at a second node to the first switch, and to a fourth node, a second capacitor coupled, at a third node to the first rectifier element, and to the fourth node, and an inductor coupled between the first and the fourth nodes. The first switch is operable to be in an ON state during a first time period and in an off state during a second time period. The first switch and the first rectifier element are configured to enable the inductor to generate, during the first and the second time periods, a magnetic field having a waveform resembling a positive half-cycle of a triangular waveform.

Abstract: A current-ripple-based control strategy for an AC-DC converter with a series ripple cancellation converter (RCC). Embodiments provide series ripple cancellation by sensing the load current information, and significantly simplify the control circuitry. In addition, the embodiments allow input voltage of the series RCC to tightly track its output voltage peak value with no extra control circuit, thus minimizing the RCC component voltage stress as well as the RCC loss. Embodiments are suitable for driving an LED load, where they eliminate LED light flicker caused by the power factor correction (PFC) stage, and significantly reduce its output capacitance.

Abstract: A switch-mode power supply includes a control element in a primary circuit for controlling a transformer for transmitting electric energy from the primary circuit to a secondary circuit, a first regulating element in the secondary circuit for regulating an electric output variable of the secondary circuit, and a second regulating element in the primary circuit for regulating an electric controlled variable of the control element as a function of a temperature of the primary circuit, the second regulating element being thermally coupled to an element of the primary circuit whose temperature is to be ascertained.

Abstract: Provided are circuits and methods for a power converter that converts AC input power into DC output power using a first output circuit that provides a first output comprising a DC voltage with a first AC voltage ripple and a second output circuit including a floating capacitor and one or more power switching device, and provides a second output comprising a second AC voltage ripple, wherein the first output and the second output are connected together in series, such that the first AC voltage ripple is substantially cancelled and substantially ripple-free DC output power is provided. Embodiments significantly reduce the total output capacitance requirement without sacrificing power factor, thus avoiding the need for electrolytic capacitors and enabling the use of long-life film capacitors. The circuits and methods are particularly suitable for use in applications where ripple-free high power and high reliability are required, such as in high power LED lighting.

Abstract: A totem pole power factor correction (PFC) converter is disclosed. The totem pole PFC converter includes a first transistor having a first current terminal coupled to a first node, a first control terminal, and a second current terminal. Also included is a second transistor having a third current terminal coupled to the second current terminal at a second node, a second control terminal, and a fourth current terminal coupled to a third node. A first rectifier is coupled to the first node and a first current sense resistor is coupled between the first rectifier and a fourth node. A second rectifier is coupled to the third node and a second current sense resistor coupled between the second rectifier and the fourth node. A current sense voltage for an analog controller is generated by current alternately flowing through the first current sense resistor and the second current sense resistor.

Abstract: According to one aspect, embodiments of the invention provide a UPS comprising a delta transformer having a primary winding and a secondary winding, the primary winding coupled between an input and an output and the secondary winding having a first end and a second end, a delta inverter coupled between a DC bus and the secondary winding, a short circuit control circuit selectively coupled between the first end and the second end of the secondary winding, a main inverter coupled between the DC bus and the output, and a controller configured to control, in a bypass mode of operation, the short circuit control circuit to couple the first end of the secondary winding to the second end such that the secondary winding is short circuited and unconditioned output AC power, derived from the input AC power via the primary winding, is provided to the output.

Abstract: A power supply device includes a switching unit configured to switch to a first path in which a current smoothed by a smoothing unit is supplied to a boost converter and to a second path in which the smoothed current is supplied to a load without passing through the boost converter. The switching unit includes a first switching element to be turned on and a second switching element to be turned off when the first path is formed.

Abstract: A power factor correction circuit can include: a power meter configured to measure THD at an input port; a switching-type regulator that is controllable by a switching control signal in order to adjust a power factor of an input signal thereof; and a controller configured to generate the switching control signal to control the switching-type regulator to perform power factor correction, where the controller minimizes the THD by adjusting a current reference signal according to a measured THD, and the current reference signal represents an expected inductor current of the switching-type regulator.

Abstract: The application relates to a system for charging a battery of an electrical vehicle. The electrical vehicle charging system of the present application is helpful for decreasing the converter capacity while maintaining the charging capacity and electrical vehicles with various nominal voltages can be charged simultaneously. In one aspect the system for charging an electrical vehicle includes: a plurality of central converters, at least one switch electrically connected to the central converters, at least one transformer electrically connected to an external AC power supply, at least one distributed converter for supplying at least one distributed DC voltage with a level below that of the central converter, and a controller connected to the at least one switch.

Abstract: A circuit for converting DC to AC power or AC to DC power comprises a storage capacitor, boost and buck inductors and switching elements. The switches are controlled to steer current to and from the storage capacitor to cancel DC input ripple or to provide near unity power factor AC input. The capacitor is alternately charged to high positive or negative voltages with an average DC bias near zero. The circuit is configured to deliver high-efficiency power in applications including industrial equipment, home appliances, mobility devices and electric vehicle applications.

Abstract: A control device for a switching regulator having two or more converter stages operating with interleaved operation, each converter stage including an inductive element and a switch element, generates command signals having a switching period for controlling switching of the switch elements, and determining alternation of a storage phase of energy in the respective inductive element and a transfer phase of the stored energy onto an output element. The control device generates the command signals phase-offset by an appropriate fraction of the switching period to obtain interleaved operation. In particular, a synchronism stage generates a synchronism signal and a control stage generates the command signals for the converter stages timed by the same synchronism signal.

Abstract: A method and apparatus for controlling an on-board charger (OBC) are provided. The method includes monitoring a voltage of an input power source, increasing or decreasing the voltage of the input power source to a preset output voltage of a power factor corrector (PFC), and operating a converter receiving the preset output voltage to adjust a switching frequency of the converter based on a ripple current of an output terminal of the converter. Additionally, the converter includes a first switch configured to receive a first voltage of a first capacitor mounted within the PFC and a second switch configured to receive a second voltage of a second capacitor mounted within the PFC.

Abstract: A power conditioning device has a first operating mode where the device compensates non-active current components caused by a load, and a second operating mode where the device disconnects the load from a supply in a voltage sag situation, and also provides reserve power for the load.

Abstract: A control circuit for a power converter can include: a current detection circuit configured to generate a current detection signal that represents an input current; a control signal generator configured to generate a switching control signal such that the current detection signal is directly proportional to a voltage conversion function; and a power stage circuit of the power converter being controlled by the switching control signal, where the voltage conversion function is a ratio of an input voltage and an output voltage of the power converter.