CAJ | 학술논문

利用速度无关磁链函数法原理，提出一种可以忽略定子电感的无位置传感器改进算法。通过实时检测无刷直流电机三相端电压和母线电流大小，并利用定子电阻进行实时计算，获得无刷直流电机换相时刻，从而实现无刷直流电机无位置传感器控制。该方法实现简单、控制方便，能够准确检测出无刷直流电机转子位置信号。通过对短时脉冲法进行研究，提出一种改进的起动算法。试验结果验证了上述方法的可行性和有效性，达到了预期效果。
이용속도무관자련함수법원리，제출일충가이홀략정자전감적무위치전감기개진산법。통과실시검측무쇄직류전궤삼상단전압화모선전류대소，병이용정자전조진행실시계산，획득무쇄직류전궤환상시각，종이실현무쇄직류전궤무위치전감기공제。해방법실현간단、공제방편，능구준학검측출무쇄직류전궤전자위치신호。통과대단시맥충법진행연구，제출일충개진적기동산법。시험결과험증료상술방법적가행성화유효성，체도료예기효과。
According to the sensing theory of speed-independent flux linkage function, an improved scheme was proposed for BLDCM sensorless control without the stator inductance. The commutation instants of BLDCM were obtained from the calculation in real time by measuring three phase terminal voltages and DC link current and utilizing the stator resistance. Based on this scheme, it was easy to realize sensorless control. The proposed method was simple to realize and convenient to control, and it could accurately detect the rotor position signal. An improved start scheme was proposed by researching on the short voltage pulse detection method. The methods metioned aboved were tested through experiments and the anticipated results are achieved.