大惯量负载永磁同步电机断电-寻优重投控制系统

A Large Inertia Load PMSM Power Down-Rejoining on Optimizing Control System

针对大惯量负载永磁同步电机断电-重投时存在大的电流和转矩冲击问题,设计了一种闭环的断电-重投瞬间最小冲击寻优重投的综合控制系统。从瞬态出发,将电机涡流等内部瞬变参数等效为阻尼绕组进行分析,对原有隐极永磁同步电机模型进行了改进。在新的数学模型的基础上,分析了重投瞬间冲击产生的原因和给定转速对控制电流和转矩冲击的影响;根据分析结果,对闭环控制中的给定转速进行一定的要求,同时设计了一个电压模拟控制器和寻优控制器;最后经过实验和仿真对比,说明了分析的有效性和设计的寻优控制系统在减小冲击方面的积极作用。

Aiming to the current and torque impact of large inertia load permanent magnet synchronous motor(PMSM) when power down-rejoining on with a high speed, a closed-loop transient optimizing control system is investigated in this paper. Firstly, the concept of equivalent damping windings is introduced, and the accuracy of the non-salient pole PMSM mathematical model based on transient analyzing is improved. Based on the new mathematical model of motor, the origin of transient impact when rejoining power-on and the affect of given speed are analyzed. According to the results of the analysis, a certain requirement for given speed of the closed-loop control system is proposed. Simultaneously, a voltage simulation controller and optimizing controller are designed. Finally, the experiments and simulations verify the validity of the analysis and the positive role of reducing the impact for designed optimizing control system.