A new uninterruptible power supply with a bidirectional cycloconverter

Author

Aoki, Tadahito ; YOtsumoto, Katsuichi ; Muroyama, Seiichi ; Kenmochi, Yoshitaka

Author_Institution

NTT Appl. Electron. Lab., Toyko, Japan

fYear

1990

fDate

22-25 Oct. 1990

Firstpage

424

Lastpage

429

Abstract

A new configuration and control mechanism for an uninterruptible power supply (UPS) with a bidirectional cycloconverter are described. When commercial AC power is operating normally, the load is supplied by commercial AC power and the bidirectional cycloconverter operates as a battery charger. During interruptions of commercial AC power, the bidirectional cycloconverter operates as an inverter and supplies AC power to the load. Unlike conventional UPS, this new configuration does not require a battery charger, so it can be small, light-weight, cost-effective, and highly efficient. The output characteristics during the commercial AC power interruptions are also discussed.<>

Keywords

battery chargers; cycloconvertors; invertors; uninterruptible power supplies; battery charger; bidirectional cycloconverter; commercial AC power interruptions; control mechanism; inverter; uninterruptible power supply; Batteries; Control systems; Filters; Frequency; Interrupters; Inverters; Laboratories; Power supplies; Switches; Uninterruptible power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1990. INTELEC '90., 12th International

Conference_Location

Orlando, FL, USA

Type

conf

DOI

10.1109/INTLEC.1990.171281

Filename

171281