【摘要】 给出了一种有效的磁悬浮飞轮(MSFW)用无刷直流电动机无位置传感器控制方法。将不导通相端电压选出与电压参考信号进行比较得到一个方波信号,此信号发生改变时即是不导通相绕组反电动势过零点,延时30°电角度进行换相。实验结果表明,这种无位置传感器控制方法能够在较大的速度范围内有效地进行换相和控制,能大大提高磁悬浮飞轮运行的可靠性和安全性。更多还原

【Abstract】 This paper presents a novel sensorless control method for brushless DC(BLDC)motor for magnetically suspended flywheel(MSFW).A square wave signal can be directly extracted by comparing the floating terminal voltage with reference voltages.The commutation was performed 30 electrical degrees delay from a instant when the square wave changed.The experimental results show that the proposed method for MSFW can commutate exactly,and improves the reliability and security of BLDC greatly.更多还原