A high-power multitransistor-inverter uninterruptable power supply system
- 1 July 1988
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 3 (3), 278-285
- https://doi.org/10.1109/63.17945
Abstract
The active and reactive load distribution between n paralleled single-phase uninterruptible power supply (UPS) inverters is equalized by virtue of n-1 load-sharing control loops. The approach permits the construction of UPS systems of any desired power rating at maximum utilization of the power components. The method of harmonic cancellation decreases the switching frequency of the power devices while maintaining good dynamic performance. The design details of a 45 kVA UPS inverter system with 150% steady-state overload capability are presented. The performance under various operating conditions is illustrated by oscillograms.Keywords
This publication has 2 references indexed in Scilit:
- Power Transistorized Uninterruptible Power SupplyIEEE Transactions on Industry Applications, 1984
- Large Parallel UPS Systems Utilizing PWM TechnologyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1984