Title :
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
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;
Conference_Titel :
Telecommunications Energy Conference, 1990. INTELEC '90., 12th International
Conference_Location :
Orlando, FL, USA
DOI :
10.1109/INTLEC.1990.171281
