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This paper presents single stage series load resonant ZVS-PWM high frequency inverter which operates one diode conduction mode and critical ZCS PFC rectifier for induction heating (IH) applications. This single stage inverter is composed of a single phase PFC rectifier operating at one diode conduction mode and asymmetrical ZVS-PWM high frequency resonant inverter without the interlink bulky electrolytic...
Converters that integrate the functions of power factor correction (PFC) and isolated dc-dc conversion in a single power converter have been proposed to reduce the cost associated with operating two separate switch-mode converters. Many low power ac-dc single-stage converters have been proposed in the power electronics literature, but very few three-phase single-stage full-bridge converters and these...
This paper proposes a three-phase, two-switch, buck converter that can operate with input power factor correction. The key features of the proposed converter are that a switch in it can operate with almost half the voltage stress of that in the standard three-phase, single-switch buck converter and with less current stress. In the paper, the operation of the converter is discussed and a detailed mathematical...
A new topology of DSTATCOM (distribution static compensator) consisting of a H-bridge VSC (voltage source converter) and a star/delta transformer is proposed for power quality improvement in a three-phase four-wire distribution system. The star/delta transformer provides isolation to the H- bridge VSC as well as mitigates the zero sequence current in a three-phase four-wire distribution system. The...
An improved three-phase single-stage isolated power factor correction (PFC) converter topology is studied in this paper. The converter is based on full-bridge structure and operates in constant-frequency discontinuous conduction mode (DCM). Through the analysis on the working principle and mechanism of voltage spike of the original topology, a voltage-clamping circuit is proposed and added in primary...
This paper presents a new zero-voltage transition, power factor corrected three-phase AC-AC converter with single-phase high frequency link. It is a two-stage converter; the first stage is a boost-integrated bridge converter operated at fixed frequency and operates in two modes at ZVT for all switches and establishes a 1-ph square wave HF link. The second stage is a bi-directional PWM 3-ph bridge...
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