Latest Three-Phase CVCF Sinwave Power Conditioner with New Quasi-Resonant ZVS DC and High-Frequency AC Link for Telephone Power Supply Systems

Author

Yonemori, H. ; Nagura, H. ; Nakaoka, M.

Author_Institution

Department of Electrical and Electronics Engineering, Faculty of Engineering, Kobe University, I-I Rokko-dai, Nada-ku, Kobe CitY, 657, Japan

fYear

1994

fDate

11-15 April 1994

Firstpage

367

Lastpage

374

Abstract

This paper presents a newly-developed high-performance 3Â¿CVCF power conversion conditioner incorporating a new Quasi-Resonant DC Link (QRDCL) single-phase inverter with PWM function and high-frequency AC transformer linked cycloconverter topology. The operating characteristics of a proposed QRDCLI are discussed on the basis of computer-aided simulating results. In order to achieve a significant improvement in high performance and quick control response, the specially-designed voltage Pulse Distributed vector control Modulation (Modified PDM) scheme is introduced through employing DSP software-based control implementation. In addition, this instantaneous voltage vector controlled 3Â¿CVCF power conditioning and processing system suitable for a low EMI, high-power density UPS is evaluated and discussed for linear and non-linear electrical loads under the conditions of large load variations from a practical point of view.

Keywords

Computational modeling; Power conversion; Power supplies; Pulse width modulation; Pulse width modulation inverters; Resonant inverters; Telephony; Topology; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Special Conference, 1994. TELESCON '94. The first International

Conference_Location

Berlin, Germany

Type

conf

DOI

10.1109/TELESC.1994.4794361

Filename

4794361