Zero voltage switching AC/DC/AC converter using modified high frequency DC-link

Author

Woo, Byeong-Ok ; Kim, In-Dong ; Cho, Gyu-Hyeong

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea

fYear

1990

fDate

7-12 Oct. 1990

Firstpage

1243

Abstract

A power converter that is based on high-frequency links, uses unidirectional switches and operates in the zero voltage switching mode is described. It is shown that the converter´s reactive elements serve as waveshaping or snubbing functions around the switching operation and are minimally involved in the power transfer. Consequently, the volt-ampere ratings of the reactive elements and switching devices are reduced, and the losses due to the effective series resistance of the reactive elements are decreased. The control method of this converter is to regulate the phase voltages of output capacitors, which operate as equivalent voltage sources. Waveforms obtained from digital simulations of the converter are presented.<>

Keywords

equivalent circuits; power convertors; switching; voltage control; AC/Dc/AC power convertors; HF DC link; digital simulations; equivalent voltage sources; output capacitors; phase voltages; reactive elements; series resistance; snubbing; unidirectional switches; waveshaping; zero voltage switching; Analog-digital conversion; Capacitors; Frequency conversion; Paramagnetic resonance; RLC circuits; Stress; Switches; Switching converters; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1990., Conference Record of the 1990 IEEE

Conference_Location

Seattle, WA, USA

Print_ISBN

0-87942-553-9

Type

conf

DOI

10.1109/IAS.1990.152343

Filename

152343