This paper put forward the realization method of a kind of multi - function general use inverter system which added other functions based on the independent sine wave inverter , it not only can be used as independent inverter power supply but can be used as an in - support mode ups which realize synchronous with the phase of power grid voltage and realize to switch with power grid mutually , it also can realize three phase ac output by the combination of three synchronous inverters , experiment proved it in this way has a stronger ability of resisting three phase unbalance load 本文提出了一種基于獨(dú)立正弦波逆變器的功能之上復(fù)合其他功能而成的多功能通用逆變電源系統(tǒng)的實(shí)現(xiàn)方法,此系統(tǒng)不僅可以作為獨(dú)立逆變電源使用,還可以與電網(wǎng)電壓的相位同步,作為后備式正弦波ups使用,在逆變電源和電網(wǎng)的相互切換時能做到對負(fù)載無影響,同時還可以由三臺逆變器進(jìn)行組合自同步實(shí)現(xiàn)三相對稱交流輸出,實(shí)驗(yàn)證明這種方式具有較強(qiáng)的抗三相不平衡負(fù)載的能力。