A novel method that USES the harmonic back EMF signal to extract the rotor position is put forward, and a new position sensor merged into an organic whole with the motor is designed.
提出了一种利用谐波反电势信号实现电机转子位置检测的新方法，设计了与电机一体化的新型位置传感器。
2
The direction of harmonic power flow should be understood and the position of harmonic source can be determined according to the direction of harmonic power while harmonics exist in power network.
电力系统中有谐波存在时，应该了解谐波功率的方向，并按谐波功率的方向确定谐波源的位置。
3
The constitute of harmonic back EMF is analysed, the position detection circuit and the microcomputer control system of step motor is designed.