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Design and Implementation of the Control System for a Hybrid Excitation Synchronous Machine

This paper proposed a novel kind of hybrid excitation synchronous machine (HESM) driving system, which possesses the properties of low speed high torque and has wide speed range. Firstly, the construction, the basic working principle and the concept of design were overviewed. Following this , the principle of two-speed-region control algorithm was presented based on the space voltage vector control. The proposed control algorithm includes two aspects. 1) In the low speed region, the current control strategy was adopted with or without excitation current for adjusting speed accord- ing to the load of HESM. 2) In the high speed region, the current control strategy adopts a combination strategy of holding q-axis components of Back-EMF unchanged and the copper loss minimization algorithm. The proposed methods were verified by the contrastive simulations and the experimental results through different current control methods.