Permanent magnet synchronous motor control method, device, equipment and computer program product

The invention discloses a permanent magnet synchronous motor control method, device and equipment and a computer program product, and relates to the field of motor control, and the method comprises the steps: considering the adverse effect of harmonic current on the output torque of a permanent magnet synchronous motor, and constructing a stator fundamental wave current equation with fundamental wave current as a state quantity through splitting stator current; on the basis, a fundamental wave constant disturbance observer is constructed, and the observation task of fundamental wave constant disturbance at the current sampling moment is achieved; a non-fundamental-wave constant disturbance estimation value calculation formula is also constructed, a non-fundamental-wave constant disturbance estimation value at the previous sampling moment is calculated, and a non-fundamental-wave constant disturbance value at the current sampling moment is determined according to the non-fundamental-wave constant disturbance e