Abstract

The strategy for regulating the magnetization in variable flux PM-assisted Synchronous Reluctance Machines (PMaSynRM) is discussed in this paper. The key question from the machine drive perspective is how to merge the conventional field weakening operation with the inherent PM flux regulation capability of Variable Flux Memory Machines (VFMMs). The target is to reach a reasonable compromise between improved machine efficiency and minimum number of magnetization regulating operations. The validity and feasibility of the proposed control concept will be displayed through simulations on a demonstrator PMaSynRM machine over the complete speed range.

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