Title :
Development of uninterruptible secondary battery system
Author :
Ohshima, Masaaki ; Miyazaki, Satoshi ; Inagaki, Katsuhida ; Kikuchi, Hitoshi ; Nirasawa, Hitoshi
Author_Institution :
Tokyo Electr. Power Co. Inc., Japan
Abstract :
This paper presents the system configuration and control schemes of a USBS (uninterruptible secondary battery system), which acts as a battery energy storage system when no fault occurs in a commercial power network and functions as a UPS in case of network faults. If a fault such as a voltage interruption occurs on the network, the USBS disconnects critical loads from it instantly, and supplies power to them as a UPS. It takes less than 2 ms to restart supply power to the loads in case of an emergency, so no damage occurs. Simulations and experimental tests are carried out to confirm the feasibility of the proposed system
Keywords :
battery chargers; electrical faults; power supply circuits; secondary cells; uninterruptible power supplies; UPS; battery energy storage system; critical load disconnection; emergency power supply; uninterruptible secondary battery system; voltage interruption; Batteries; Circuit faults; Control systems; Emergency power supplies; Insulated gate bipolar transistors; Power semiconductor switches; Power supplies; Uninterruptible power systems; Universal Serial Bus; Voltage;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Conference_Location :
Nagaoka
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.638286
