Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1987.11a
- /
- Pages.21-24
- /
- 1987
RECENT DEVELOPMENT OF DC-TO-AC CONVERTERS FOR SMALL UPS SYSTEMS
- Harada, Koosuke (Kyushu University) ;
- Sakamoto, Hiroshi (Kyushu University) ;
- Shoyama, Masahito (Kyushu University)
- Published : 1987.11.20
Abstract
A novel type of the sinusoidal dc-to-ac converter is presented, where a pair of switches is placed in each side of the primary and the secondary of the isolation transformer. This converter is controlled by the phase difference between the two pairs of switches. As a result, the transformer is miniaturized by making the switching frequency high and the reactive energy can be easily recovered to the dc-source. This converter is especially suitable for small UPS systems.
Keywords