惑应电机间接自控制技术研究

Research on a Novel Indirect Self Control Scheme for Induction Motors

研究了一种实用的感应电机间接自控制技术，它与传统直接转矩控制技术有着相近的物理概念，不同的是它采用了较为成熟的空间电压矢量脉宽调制技术来稳定逆变器的开关频率。首先研究了该技术的理论基础，着重分析该技术中几个关键单元的功能与设计，最后基于maflab软件进行了仿真，仿真结果表明，采用该方案可以有效减小电机转矩的波动，验证了间接定子参量控制方案的优越性能。

A kind of practical indirect self control （ISC） scheme for induction motors is studied in this paper. Although there are some similar physical concepts in ISC as in the classical direct torque control , it is different that the space vector pulse width modulation is applied in this paper to keep the switching frequency constant. Firstly, the theoretical fundamentals of the new scheme were studied, and then the key modules of the scheme were analyzed in detail. Finally, the ISC scheme was simulated with the software of Matlab. The simulation results show that the ripple of the electromagnetic torque is decreased effectively and the high performance of the new scheme is validated.