变频空调器用全数字化空间矢量PWM逆变器研究

Study of a Digital Space-vector PWM Inverter Used for Frequence-variable Air-conditioner

针对变频空调器对变频调速的要求 ,研制出采用修改空间矢量PWM控制的逆变器 ,以改善其在调制系统M大于 1时的线性放大特性 ,控制器用NEC先进的UPD780 988单片机实现 ,并成功地用于一拖二变频空调的压缩机变频调速 。

For the purpose of meeting the requirements of air conditioner to VVVF,an inverter designed for air conditioner is introduced.A modified space vector PWM methode is developed so that the linearity of the inverter can be improved when M >1.The inverter is controlled by an UPD780988 single chip microprocessor and have been successfully used in speed control of an air conditioner compressor.