Abstract
A small-signal model based on the net flux method is developed for mutually coupled switched reluctance machines (MCSRMs) to facilitate the design and analysis of the current controller for the drive. The underlying methodology of using net flux allows MCSRM modeling on a per-phase basis which reduces the time involved in characterizing the motor and the number of machine model parameters. A comprehensive theory of modeling the machine and extracting the machine parameters with analytical derivations is provided. Furthermore, a complete design procedure and analysis for a proportional-integrator controller is presented. The derived MCSRM small-signal model is useful to evaluate the controller's current tracking performance, disturbance rejection capability, and response features over a wide speed range. Simulation analysis and experimental results for a 3 phase, 150 W, full-pitched MCSRM drive system are provided both for small-signal model validation and current controller performance evaluation.
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