针对永磁辅助同步磁阻电机(PMASynRM)直接转矩控制(DTC)转矩脉动较大的问题,研究了基于PMASynRM的无差拍直接转矩控制（DB-DTC）方案。该方案将有效磁链的概念引入PMASynRM，提取转子位置信息应用于DB-DTC，提高了电机的运行性能；采用了基于定子磁场定向的无差拍转矩控制方法以简化计算和有效抑制转矩脉动。搭建基于定子磁场定向的无差拍直接转矩磁链控制（DB-DTFC）模型并在MATLAB/Simulink软件上进行仿真试验，验证了该算法可以有效减小磁链和转矩脉动，具有较好的动态和稳态性能。

Aiming at the problem of large torque ripple in direct torque control (DTC) of permanent magnet assisted synchronous reluctance motor (PMASynRM), a deadbeat direct torque control (DB-DTC) scheme based on PMASynRM is proposed. The concept of effective flux is introduced into PMASynRM, so as to extract the rotor position information and apply it to DB-DTC, which improves the operation performance of the motor. The deadbeat torque control model based on stator field orientation is established to effectively simplify the calculation and suppress the torque ripple. The improved deadbeat direct torque and flux control (DB-DTFC) model is built based on MATLAB/Simulink. Simulation results show that the algorithm can effectively reduce the flux and torque ripple and has good dynamic and steady-state performance.