Abstract
Disclosed is a commutation error compensation method for an electric motor. The method comprises: when a rotor, that has not been corrected, in an electric motor rotates in a set direction, collecting a position signal and a three-phase current signal of the rotor, wherein the position signal of the rotor represents the rotation angle of the rotor (101); carrying out filtering processing on the three-phase current signal to obtain a fundamental component of the three-phase current signal, and determining a position error compensation signal of the electric motor on the basis of the fundamental component of the three-phase current signal (102); determining an ideal phase interval of the rotor according to the position error compensation signal and the position signal of the rotor (103); and determining an adjustment method for the rotor of the electric motor according to the ideal phase interval of the rotor, and commutating the rotor of the electric motor according to the adjustment method (104).
| Original language | English |
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| Patent number | WO2021092812A1 |
| IPC | H02P 21/00,H02P 6/14 |
| Priority date | 13/11/19 |
| Publication status | Published - 20 May 2021 |