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针对永磁同步电机(permanent magnet synchronous motor,PMSM)系统,采用矩阵变换器(matrix converter,MC)驱动方式,提出了基于自抗扰技术(active disturbance rejection control,ADRC)的直接转矩控制(direct torque control,DTC)策略.用MC替换常规交—直—交变换器,以提高系统输入侧功率因数(power factor,PF);用ADRC替换常规电机调速系统中的PI速度调节器,以提高系统的鲁棒性.首先,建立MC驱动PMSM系统的数学模型,并给出ADRC速度调节器和MC驱动PMSM的DTC设计思路和方法.基于ADRC的DTC策略能够使MC驱动的PMSM系统稳定运行,具有较好的转速和转矩控制效果,且输入侧PF能够达到1.然后,将其与基于PI的DTC策略相比较,该策略具有更强的抗负载干扰能力和跟踪给定转速变化的能力.最后,通过仿真实验验证该方法的正确性和有效性.
For the permanent magnet synchronous motor (PMSM) system, a matrix converter (MC) driving method is proposed to improve the performance of direct torque control (DCR) based on active disturbance rejection control (ADRC) torque control (DTC) strategy, replacing conventional AC-DC-AC converters with MCs to increase the power factor (PF) at the system input side, replacing PI speed regulators in conventional motor speed control systems with ADRCs to improve System robustness.Firstly, the mathematical model of MC-driven PMSM system is established and the design ideas and methods of DTC for ADRC speed regulator and MC-driven PMSM are given.DTC strategy based on ADRC can make the MC-driven PMSM system run stably, Has better speed and torque control effects, and the input side PF can reach 1. Then, compared with the PI-based DTC strategy, the strategy has more ability to resist load disturbance and track the change of a given speed Finally, the correctness and validity of the method are verified by simulation experiments.