一种新型的变频调速系统——短路换相式电流型逆变电路

A new kind of short phase-cvonverting current circuit

针对应用较为广泛的串联二极管式电流型逆变电路变频调速存在的缺点 ,提出了一种新型短路换相式电流型逆变电路。对该短路换相式电流型逆变电路的换相过程分析表明 ,该电路系统具有不存在叠加尖峰电压、电容器的充电电压与负载大小无关以及负载电流对换相过程影响小等优点。该新型短路换相式电流型逆变电路适用于泵类、风机类等负载。

A new kind of short phase_converting current circuit is introduced, which has many advantages,such as the circuit has no superposed peak voltage,the capacitor charge voltage is independent with the load and the load current has little influence on the phase converting process etc..The analysis also shows that the this system is suitable for pumps,fans etc..