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This paper presents an interleaved active-clamping zero-voltage-switching (ZVS) forward-flyback converter without output choke. The presented topology has two active-clamping circuits with two separated transformers. In this converter the main switch of any converter also acts as auxiliary switch for the other one, so only two switches are required and there is no need to additional switches to achieve...
An electronic load controller (ELC) is developed for an isolated asynchronous generator (IAG) to feed 3-phase, 4-wire consumer loads in a small hydro power generation system. This ELC consists of ac capacitors, voltage source converter (VSC) with a dc capacitor, a chopper, an auxiliary load at its dc bus, a star/hexagon transformer, consumer loads and it is implemented using synchronous-reference-frame...
This paper presents a quasi-resonant converter with divided resonant capacitor on primary and secondary side of the isolation transformer. A conventional quasi-resonant converter using flyback topology can realize soft switching with simple circuit. However, relatively large surge voltage is generated in the switching device. To suppress such surge voltage, resonant capacitor is divided on primary...
Boost phase-shifted (PS) full-bridge (FB) converter is a typical converter in high voltage application. Due to the requirement of high voltage insulator, its transformer is often designed with more leakage inductor and inter-layer capacitor. Considering leakage inductor and inter-layer capacitor's effect, accurate model of Boost PS FB converter is established. The difference between this model and...
Integrating various interface converters of small-rated distributed generators into the power system has become a promising solution to rapidly increasing demand of premium electric power. The output voltage of distributed generators, such as PVs, is usually so low that a low-frequency coupling transformer is required to place between the interface inverter and the grid for proper power delivery....
The novel application of CCC technology in the slip energy recovery drive system (SERDS) is proposed for an improvement of the susceptibility of the inverter to commutation failure, reducing the reactive power consumption and a good power factor. In this paper, the reason of commutation failure is analyzed, simulation model with proposed commutated capacitors between the inverter bridge and the inverter...
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