Flux-linkage characteristics of switched reluctance motor

Abstract

An important requirement in the modelling of switched reluctance motors (SRM) is the knowledge of their flux-linkage characteristics. Idealisation of the flux-linkage characteristics will result in a model which cannot predict the performance of the machine with sufficient accuracy. It is necessary therefore to determine flux-linkage characteristics as closely as possible. In this paper, a method of finding the flux-linkage characteristics is explained. The same method is demonstrated on a commercially available 4 kW, 8/6 pole OULTON SRM. The validity of the test results is checked by computing the static torque characteristics based on the measured flux-linkage characteristics and comparing them with experimentally measured static torque characteristics. The sources of measurement error are discussed.