The effect of flux optimization on energy efficiency of induction motors in fan and pump applications

In this paper we discuss the effect of flux optimization on energy efficiency of AC drives. The focus of the study is flux optimization as a part of VSD drive control of induction motors, specifically, for fan and pump applications. Using a very detailed motor model, we present flux optimization results for various speed and load scenarios, and translate these results into practical power savings. We study parameter sensitivity issues of flux optimization and make recommendations for its online implementation. In the final version of the paper we support our simulation study by experimental results. This study is expected to result in a useful electronic tool for industry.