双轮坐式自平衡车DTC全速度范围运行研究

Research on DTC Operation of Two-wheeled and Seated Self-balanced Vehicle at Full Speed Range

为满足双轮坐式电动车低、高速行驶的不同需要,提出隐极式永磁同步电机直接转矩控制全速度范围运行控制策略。首先阐述了直接转矩控制的基本原理,并将其应用于隐极式永磁同步电机的控制中。为提高系统性能、实现系统高速运转的要求,将MTPA控制和弱磁控制引入直接转矩控制。Matlab仿真结果表明,该控制方法响应速度快,控制精度高,满足系统需求。

To meet the different needs of the vehicle in high and low speed range, DTC operation of non-salient pole PMSM at full speed range was adopted as the control method of the system. The basic principle of the direct torque control, which was applied to the control of non-salient pole PMSM, was introduced. To improve the performance of the system and to meet the need of the vehicle in high speed range, MTPA theory and Fielding Weakening theory, are adopted in the PMSM DTC system. The Matlab simulation results show that this method has fast response, high precision, and satisfies the system requirements.