Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 1998.10a
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- Pages.808-812
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- 1998
A UPS BASED ON A NEW SPWM GENERATOR
- Liu, Shulin (Dept.of Automation Engineering, Xi'an Mining Institute) ;
- Liu, Jian (Dept.of Industrial Automation, Xi'an Jiao Tong University)
- Published : 1998.10.01
Abstract
A new SPWM control method for Uninterrupted Power System(UPS) is presented. A triangle waveform is used as the reference signal. The desired SPWM control signal can be obtained more easily with a group of comparators. The output AC voltage can be regulated by controlling the lower reference and the upper reference of the comparators according to the feedback voltage. Basic principle, an actual circuit and the experimental results on a 500W UPS for computer system is discussed as an example.
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