A New Control Strategy for Rotor Position Estimation Error Compensation of Permanent Magnet Synchronous Motor

The driving performance of permanent magnet synchronous motors is linked to the accuracy of rotor position signal detection. Due to non ideal components such as filters in the loop, phase estimation errors may occur. This article is based on the Luenberger observer, introducing the aforementioned non ideal link to delay reconstruct the current signal and performing secondary phase-locked with the estimated position signal, forming a dual phase-locked loop. And the introduction of high-order phase-locked loop reduces the steady-state error of permanent magnet synchronous motor in the speed change phase. Using synchronous frequency extraction filters to filter out superfluous harmonics in the inverse electromotive force signal. Compared with traditional phase-locked loops, the rotor position estimation error has been more fully compensated. The results obtained from the simulation demonstrated that the program is feasible.