CAJ | 학술논문

介绍了无刷直流电动机的基本工作原理,设计了一种基于STM8S208RB的48V空调压缩机控制器,采用上桥臂开关管斩波,另一相下桥臂开关管常通的PWM调制方式,通过单片机内部AD对电机的不通电相的反电动势采样,获得了两种PWM情况下反电动势的过零点,实现了空调用无刷直流电机的无位置传感器控制技术,然后对其进行了实验研究,给出了实验波形,结果表明该控制器能有效地实现过载保护和启动失败造成的堵转过流保护,其低成本、高可靠性很好地满足了空调压缩机的控制要求。
개소료무쇄직류전동궤적기본공작원리,설계료일충기우STM8S208RB적48V공조압축궤공제기,채용상교비개관관참파,령일상하교비개관관상통적PWM조제방식,통과단편궤내부AD대전궤적불통전상적반전동세채양,획득료량충PWM정황하반전동세적과영점,실현료공조용무쇄직류전궤적무위치전감기공제기술,연후대기진행료실험연구,급출료실험파형,결과표명해공제기능유효지실현과재보호화계동실패조성적도전과류보호,기저성본、고가고성흔호지만족료공조압축궤적공제요구。
This paper describes the principle of brushless DC motor（BLDCM）and designs a Air-conditioner compressor controller based on STM8S208RB.The PWM modulation in this application is H-PWM-L-ON（one high bridge PWM,another phase low bridge is constant ON）.The zero crossing point can be acquired precisely utilizing the microcontroller embedded AD converter,which sampling the floating phase.Experimental results also given the effectiveness of overload protection and startup fail protection.Low cost and high reliability verify the satisfaction for air-conditioner compressor.