全数字化交流电机直接转矩控制系统

Fully Digitized Direct Self-Control System of an AC Motor

分析了直接转矩控制的基本原理。系统采用高低速均适用的磁链混合观测模型。提出一种改进的磁链和转矩控制器，同时给出了相应的电压矢量选择规则．还提出了开关频率自调整控制的思想。在此基础上，设计了８０９８单片机全数字控制系统，用它分别进行了数字仿真和实时控制，并给出实验结果。

The dasic principle of direct self control system is analysed. A mixing type of flux estimator is empolyed at high and low velocities.A kind of improved flux and torque controller is presnted and the corresponding selecting rule of voltage vectors is showed at the same time.It puts forward that the control system by 8098 single chip miciroprocessor is desingned. Simulation and experimental results are showed at the end.