感应电动机直接转矩控制技术发展趋势

Development of Direct Torque Control Technique of Induction Motor

直接转矩控制技术是继矢量控制技术之后的一种新型高性能的交流变频调速技术,理论研究与产品开发已取得了丰富的成果和巨大的经济效益,但低速运行受参数变化影响严重,稳态脉动大。对直接转矩控制技术的研究成果和目前存在的问题进行了总结,并提出如何发展这项技术。因此,研究有助于推动此项工作的发展。

Direct torque control （DTC） developed after the field-oriented control was a novel high-performance control strategy for AC variable-frequency drives. It was very popular for its merits such as quick and response of torque, structure simplicity, robustness and etc. Acquired many achievements in theory and application research, however as a new technique immature and imperfect problems that severe influence of stator respeed condition, large torque ripple under steady state. This paper summarized the current research status and existing problems for DTC and presented develop DTC technique.