The research of brushless doubly-fed AC excited induction machine drive

This paper presents the configuration and mathematical model of (single-frame and self-cascaded) brushless doubly-fed AC excited induction machines (BDFAEIMs). On the basis of the mathematical model of BDFAEIMs and the control algorithm of their control system, numerical simulation (with C++ language development environment) is made in order to get a valid conclusion. From the simulation results, it can be seen that field-oriented vector control algorithm of utility supply is suitable for the brushless doubly-fed AC excited induction machine drive control system to meet its dynamic and static performances. Finally, a control system which consists of over fifty printed circuit boards (single height of European standards) is made and the laboratory results conforms with the above-mentioned control algorithm and computer simulation.