关键词: 六相永磁同步电机, 超螺旋算法, 二阶滑模, PI控制器, 鲁棒性

Abstract:

In order to study the performance of the six-phase permanent magnet synchronous motor control system, a double subspace mathematical model of six-phase permanent magnet synchronous motor was established by matrix transformation based on vector space decoupling method. The control law based on super-twisting algorithm was studied. The second-order sliding mode speed controller was designed. A sinusoidal saturation function was introduced into the vector control system of six-phase permanent magnet synchronous motor to replace the traditional PI controller. The motor speed control system was simulated. The experimental results show that the speed controller can achieve high efficiency adjustment of the motor's speed loop, and the stability is better. Compared with the traditional PI controller, the second-order sliding mode controller has better dynamic and static performance, stronger anti-interference, faster speed response and better robustness.

Key words: six-phase permanent magnet synchronous motor (PMSM), super-twisting algorithm, second order sliding mode, PI controller, robustness