Improved circuit of AC choppers for single-phase systems

Author

Ahmed, Nabil Abd El-Latif ; Amei, Kenji ; Sakui, Masaaki

Author_Institution

Fac. of Eng., Toyama Univ., Japan

Volume

2

fYear

1997

fDate

3-6 Aug 1997

Firstpage

907

Abstract

In this paper, an improved circuit of AC choppers for single-phase systems are proposed and investigated. This new circuit employs a DC chopper modulated switch with a diode bridge rectifier and two switches to provide a freewheeling path for the load current when the modulated switch is off. The attractive feature of this improved circuit is that it uses only a single modulated switch. The improved circuit has many advantages compared with the conventional AC choppers such as simple design requirements, easy implementation, higher power capacity, fast dynamic response, high reliability, high power factor, low cost, low switching loss and consequently high efficiency. By digital simulation several characteristics are investigated

Keywords

bridge circuits; choppers (circuits); circuit reliability; diodes; dynamic response; power factor; rectifying circuits; AC choppers circuit; DC chopper modulated switch; digital simulation; diode bridge rectifier; fast dynamic response; freewheeling path; high efficiency; high power factor; high reliability; higher power capacity; load current; low cost; low switching loss; single-phase systems; Bridge circuits; Choppers; Costs; Digital simulation; Diodes; Reactive power; Rectifiers; Switches; Switching circuits; Switching loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference - Nagaoka 1997., Proceedings of the

Conference_Location

Nagaoka

Print_ISBN

0-7803-3823-5

Type

conf

DOI

10.1109/PCCON.1997.638373

Filename

638373