摘要
针对现有UPS工作效率低,稳定性差,负载能力有限等问题,设计了一种三相三线制的Delta型UPS,系统指标为输出电压220/380 V,50 Hz,输出额定容量为10 kVA,直流侧电压为650 V。设计将Delta变换器控制成一个可控电流源,其逆变器采用直接电流控制,主逆变器采用瞬时值波形比较控制和重复控制算法,并通过坐标变换算法,降低运算量和提高控制精度,利用PSIM仿真和相关实验证明了理论设计和算法的正确性。
According to existing UPS low efficiency, poor stability,load capacity limited and some other disadvantages, a Delta-conversion three-phase three-wire UPS is designed which system index for output voltage is 220/380 V, 50 Hz, rated capacity is 10 kVA, and DC side voltage for 650 V.This design puts delta converter control into a controlled current source.The delta inverter which uses direct current control and main inverter uses instantaneous weaveform comparative control can reduce computational complexity and improve control accuracy through d,q algorithm.It proves the correctness of theory design and algorithm through PSIM simulation.
出处
《电力电子技术》
CSCD
北大核心
2011年第12期117-119,共3页
Power Electronics
基金
国家自然科学基金(70572070)~~
关键词
变换器
不间断电源
坐标变换
三相三线制
converter
uninerruptible power supply
coordinate conversion
three-phase three-wire
