农用风机与水泵的劈零矢量脉宽调制(PWM)调速研究

Researches in a High Frequency SplitZerovector PWM Inverter IM Drive System for Agricultural Pump or Fan

摘要: 为了在农村泵与风机中实行节电，采用了高频劈零矢量脉宽调制（ＰＷＭ）变频器，激励一台２２０ｋＷ鼠笼式异步电动机，通过拖动一台风机所做的数字仿真和性能试验，带载转矩脉动很小，运行平稳，电机损耗较小，效率较高。说明了该ＰＷＭ技术用于风机水泵调速中的可行性和经济性。

Abstract: To reduce the power consuption, an advanced method of regulating speed for agricultural pump and wind machine was proposed. This method was based on the splitzerovector PWM inverter that was used in the testing system. By means of digital simulation and performance experiments using a 220 kW threephase squirral cage induction motor installed on a 192 kW fan, the availability and economy of this system were verified.