基于自抗扰控制器的永磁同步电机直接转矩控制

针对传统永磁同步电机直接转矩控制(DTC)中转矩和磁链脉动较大以及转速超调的缺点，文中提出了一种基于自抗扰控制器的直接转矩控制策略。对于传统的PI控制策略中的磁链环、转矩环以及转速环不能满足控制系统非线性的需求，所提出的控制策略中非线性的自抗扰控制器满足了系统的非线性需求，提高了控制系统的动态响应能力。该策略中使用自抗扰控制器取代了传统PI控制结构，设计磁链、转矩和转速自抗扰控制器。通过搭建半实物仿真平台，进行实验验证文中控制策略的有效性。实验结果表明所提出的控制策略与传统的直接转矩控制相比较，文中提到的控制策略可以有效降低转矩和磁链的波动并提高系统的稳定性，降低了转速超调，改善了系统的动态性能。

Direct Torque Control of Permanent Magnet Synchronous Motor Based on Active Disturbance Rejection Controller

: Aiming at the shortcomings of large torque and flux pulsation and speed overshoot in traditional direct torque control (DTC) of permanent magnet synchronous motors, this paper proposes a direct torque control strategy based on active disturbance rejection controller. For the flux loop, torque loop and speed loop in the traditional PI control strategy, the non-linear demand of the control system cannot be met. The non-linear active disturbance rejection controller in the control strategy proposed in this paper meets the non-linear demand of the system and improves The dynamic response capability of the control system is improved. In this strategy, an active disturbance rejection controller is used to replace the traditional PI control structure, and an active disturbance rejection controller for flux, torque and speed is designed. By building a semi-physical simulation platform, experiments are carried out to verify the effectiveness of this control strategy. The experimental results show that the control strategy proposed in this paper is compared with the traditional direct torque control. The control strategy in this paper can effectively reduce the fluctuation of torque and flux, improve the stability of the system, reduce the speed overshoot, and improve the dynamics of the system. performance.