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Patent

Dc link module for reducing dc link capacitance

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TLDR
In this paper, a dc link module for a power circuit comprising a first connector connecting to a first power conversion circuit, a second connector for connecting to second power conversion circuits, wherein the second circuit is connected to a load circuit arranged to at least intermittently operate as a power source to the power circuit, at least one dc link capacitors arranged between the first connector and the second connector, and at least voltage compensation circuits arranged between them.
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Patent

Ripple cancellation converter with high power factor

TL;DR: In this paper, a ripple cancellation converter provides a second AC voltage ripple connected in series with the main output, such that the first voltage ripple is substantially cancelled; or a second current ripple ripple is connected in parallel with the primary output to cancel the first AC current ripple.
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Microcontroller architecture for power factor correction converter

TL;DR: In this article, a programmable logic device (PLD) includes a second serial interface in communication with the first serial interface and a second dedicated pin, and the PLD sets a value in an off-time register based on a control message from the microcontroller.
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Switch actuation measurement circuit for voltage converter

TL;DR: In this article, a power factor correction (PFC) circuit is used to indicate whether the switch is in the open state or the closed state based on a voltage across the first and second terminals of the switch.
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Temperature sensing circuit for transmitting data across isolation barrier

TL;DR: In this article, an isolated temperature sensing system includes a thermistor that measures a temperature of a compressor system, and a control module receives the output signal via an isolation barrier and determines the temperature of the compressor system based on a ratio of: (i) a first period that output signal is in the first state to (ii) a second period that the output signals are in the second state.
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Input reference signal generation systems and methods

TL;DR: In this paper, a power factor correction (PFC) system includes a PFC circuit that receives an alternating current (AC) voltage and that, using a switch, generates a direct current (DC) voltage from the AC voltage.
References
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Journal ArticleDOI

Low Frequency Current Ripple Reduction Technique With Active Control in a Fuel Cell Power System With Inverter Load

TL;DR: In this paper, an advanced active control technique is proposed to incorporate a current control loop in the dc-dc converter for ripple reduction, and the proposed active ripple reduction method has been verified with computer simulation and hardware experiment with a proton exchange membrane type fuel cell using a multiphase dc-DC converter along with a full-bridge dc-ac inverter.
Patent

Switching power supply

TL;DR: In this article, a switching power supply capable of correcting a power factor without using a shunt resistor is provided, which includes a rectifier for rectifying an AC power supply, boosting means including a power MOSFET for boosting an output of the rectifier, a smoothing capacitor for smoothing the output of boosting means, voltage-dividing resistors for detecting the output voltage, and driving means which form a pulse signal.
Patent

Control device for electric motor drive device

TL;DR: In this paper, a control device that controls an electric motor drive device is configured with a first voltage control section that derives a modulation rate representing a ratio of an effective value of the voltage command values to the DC voltage and a voltage command phase.
Patent

Magnetic device and power converter employing the same

TL;DR: In this article, the authors present a magnetic device and power converter with a first L-core segment including a first leg and a second leg extending therefrom, and an opposing second Lcore segment with both legs and a winding formed around at least one of the first leg.
Patent

Step-down type DC-DC regulator

TL;DR: In this paper, the FET's lying on a switching circuit are used to execute a switched capacitor action, where a first capacitor connects to a battery to charge the former at an input power voltage, and after charging, disconnect the first capacitor from the battery but simultaneously connect the first capacitance to a second capacitor to transfer accumulated electric charges to the latter, and a control circuit including a comparator and a voltage controlled oscillator monitors an output voltage from the second capacitor and performs a switching control so that the output voltage is maintained at a specific level.