[W-MA-21] Iron Loss Analysis of an SR Motor Accounting for Hysteresis and Eddy Current Distribution

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1. Introduction
Switched reluctance motors (hereafter referred to as an “SR motor”) are highly durable, robust, and have low costs since they do not use permanent magnets. Since the magnetic flux density waveform of an SR motor’s iron core differs from those of AC motors, such as PM synchronous motors and induction motors, it has been pointed out that accuracy cannot be achieved using conventional iron loss evaluation methods(1)(2). We used a new method which can evaluate iron loss in high accuracy even with magnetic density wave form for SR motors, and gained positive results when comparing with actual measurements. This paper reports on the findings of this research.

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