Development of voltage sag compensator and UPS using a flywheel induction motor and an engine generator |
| |
| Authors: | Shuhei Kato Taku Takaku Hideo Sumitani Ryuichi Shimada |
| |
| Affiliation: | 1. Integrated Research Institute, Tokyo Institute of Technology, Japan;2. Fuji Electric Device Technology Co., Ltd., Japan |
| |
| Abstract: | Flywheel energy storage systems are attracting attention as uninterruptible power supplies (UPS) from the viewpoint of environmental friendliness and high durability performance. Using a low‐speed, heavy flywheel and a low‐cost squirrel‐cage induction motor/generator, two applications are proposed: (1) an 11‐kW voltage sag compensator using a capacitor self‐excited induction generator without semiconductor converters and (2) a UPS composed of the flywheel system and an engine generator. Based on experimental results, an ideal voltage sag compensator and UPS are realized by the low‐technology flywheel system. © 2009 Wiley Periodicals, Inc. Electr Eng Jpn, 167(1): 74– 81, 2009; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20784 |
| |
| Keywords: | flywheel voltage sag compensator UPS squirrel‐cage induction motor capacitor self‐excitation stabilization of engine generator. |
|
|
