In allusion to the problems of difficult voltage raising,complex control,and poor anti-interference of the UPS system caused by the defects of the traditional inverter,a new UPS system topology based on Trans-Z source inverter circuit is proposed. The basic structure and working principle of Trans-Z source inverter circuit are studied. Sinusoidal pulse width modulation(SPWM)is used to wholly control the circuit and change the output voltage. On the basis of theoretical analysis,the results of Saber simulati...
0引言UPS(Uninterruptible Power System),即不间断电源,是一种含有储能装置,以逆变器为主要元件,稳压稳频输出的电源保护设备[1-2]。因此逆变器性能直接影响到UPS的性能。目前UPS系统中的逆变器大部分为传统的电压源逆变器,在实际应用中存在众多缺陷和不足。单一的升压或降压?