大功率UPS的工作原理及应用

The Principle and Application of High-power UPS

论述了各种因市电供电故障原因给半导体设备带来的危害,说明为了保证半导体生产线某些重要设备长期安全运行采用大功率UPS提供高质量供电的必要性。由于近代电力电子技术的不断发展,新的调制理论和器件的应用,使得UPS性能得到极大的提高,其输出功率现在可达到1000kV·A以上,输出近乎完美的正弦波电压波形,满足了各种负载需求。并论述了近代发展起来的UPS核心技术SPWM的原理和基于SPWM技术设计的三进三出逆变器以及4种类型的UPS的工作原理及重要技术参数。

This article expounds the reason caused by the power supply trouble in transmission-line system of electric power, and the damage brings to the equipment, shows the necessity of using high-power UPS to provide the high quality power supply, in order to ensure the long-term safe operations of some important equipment in semiconductor production line. The development of modem electric power technology and the new modulation theory and device application, enable the UPS performance to obtain extremely enhancement, its output now may achieve above 1000KVA, the output voltage approaches the perfect sine wave, which has met each kind of load. This paper also expounds the core technology SPWM principle of UPS which was developed the modem time, and three-input-three-output inverter based on the SPWM technical as well as the work principle of four kind of UPS and the UPS important technical parameter.