A Novel Zero-Voltage-Transition Bridgeless PFC With Reduced Conduction Losses
Publish Year: 1389
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
PEDSTC02_096
تاریخ نمایه سازی: 21 تیر 1391
Abstract:
In this paper, a new zero-voltage-switching high power-factor (PF) rectifier with Line-Modulated Fixed-Off-Time current control is introduced , that off time is a function of the instantaneous line voltage. The auxiliary circuit provides soft switching for all semiconductor devices , without any extra current and voltage stress on the main switches. The proposed converter is bridgeless, and all semiconductor devices are soft switched. In addition, there is no extra stress on the switches. Thus, the conduction and switching losses are reduced and maximum efficiency is achieved. A 250W, with an input ac voltage of 90-265 Vrms and an output voltage 400 Vdc, 100 kHz is designed and simulated to verify the system performance.
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Authors
rasool haghi
Department Electrical engineering. Sharif University of technology Tehran, Iran
mohammad reza zolghadri
(CEPSMC),Department Electrical engineering. Sharif University of technology Tehran, Iran
reza beiranvand
Department Electrical engineering. Sharif University of technology Tehran, Iran