无刷双馈电机有功和无功功率控制研究

A STUDY OF ACTIVE AND REACTIVE POWER CONTROL FOR BRUSHLESS DOUBLY-FED MACHINE

无刷双馈电机(BDFM)在变速恒频恒压发电方面有着广泛的应用前景,而影响其应用的关键在于能否对其有功功率和无功功率进行有效的控制。该文基于 BDFM 的有功和无功功率数学模型提出一种新型的功率控制系统方案,该方案能实现对 BDFM 有功功率和无功功率的独立控制。为了验证所提方案的正确性,文章最后以 BDFM 作为变速恒频恒压发电机运行为例,设计了一套功率控制系统,并对该系统进行了计算机仿真及实验,计算机仿真结果和实验结果表明功率控制系统能实现对 BDFM 的有功功率和无功功率的独立控制,充分证明了该文所提方案的可行性。

Brushless Doubly Fed Machine (BDFM) will have wide application in variable-speed constant-frequency constant-voltage (VSCFCV) generator fields, and the active power and reactive power effective control for generator is vital to the applications of BDFM. This paper brings out a new power control strategy for BDFM, which realizes the independent control for active power and reactive power of BDFM. In order to examine such strategy’s correction, a power control system has been designed for BDFM operating as VSCFCV generator in this paper, and the computer simulation and experiment ate also carried out. The simulation and experimental results show the system’s performances and proves the power control strategy’s feasibility.