改进增量式PID在电动车异步电机控制的应用

Improved incremental PID application in asynchronous motor for electric vehicles control

通过一种改进增量式PID控制算法解决纯电动车的三相异步电机在常规PID控制算法下,其启动、刹车或大幅度增减设定的速度值时存在输出饱和、噪声干扰、积分环节存在饱和效应,不能有效改善纯电动车电机系统的动态特性等问题,将其应用于纯电动车的三相异步电机的控制.通过建立纯电动车三相异步电机仿真模型,并与常规PID控制、自适应控制进行比较分析,仿真结果表明:改进的增量式PID控制可提高三相异步电机励磁绕组所产生的磁链旋转质量,使其速度加快,及时跟随电机对转速的调节需求,有效提高了电机的动态特性.

Using conventional PID algorithm to control three-phase asynchronous motor for electric vehicles, there are output saturation, noise and saturation effects of integral part problems in the algorithm when motor start, brake or a substantial increase or decrease speed. Conventional PID algorithm cannot effectively improve the dynamic characteristics of the motor system for electric vehicles. In order to eliminate the above problems, In this paper, an improved incremental PID control algorithm is proposed to control three-phase asynchronous motor for electric vehicles by modeling an electric vehicle simulation model for three-phase asynchronous motor. Comparative with conventional PID control, adaptive control. Simulation results show that the improved incremental PID control can increase the flux generated by the three-phase asynchronous motor field winding rotation quality, and speed up motor acceleration to improve the dynamic characteristics of the motor.