摘要
介绍了一种采用PWM交流器串、并联组合方案的三相补偿型UPS系统结构。与在线式UPS相比,补偿型UPS中的串联交流器的额定容量仅为整个系统的10％～20％,降低了造价,但并不影响其性能。还给出了补偿型UPS的两种控制原理,以保证输入电流和输出电压正弦,且总的谐波畸变率小于5％。
It introduces a three- phase compensation UPS is combined by two PWM converters, one of which is in series with the load, the other of which is parallel to the load. Compared with the on - line UPS, the power rating of the series converter in the UPS is only 10 ~ 20% of that of the on- line UPS. Thus, the cost of the UPS is reduced without deteriorating the UPS. Two control algorithms for the UPS are also presented to assure that both the source current and the load voltage are sinusoidal and that the total harmonic distortion of the system is less than 5 %.
出处
《通信电源技术》
2001年第2期13-16,共4页
Telecom Power Technology
关键词
PWM整流器
不间断电源
三相补偿型
active filter, dead - beat control, PWM rectifier, PWM inverter, uninterruptible power supply (UPS)
