Imitating Dynamic Input-Output Model of Control Switched-Reluctance Motors

Abstract

The Switched-Reluctance Motors (SRM) are currently one of the advanced types of general-purpose engines. The Switched Reluctance Drive (SRD) can be built on the SRM basis with very efficient characteristics provided that the drive controllers are selected correctly. When selecting controllers, the SRD is considered as a control system, and SRM as a controlled object. The SRM is a highly-nonlinear discrete controlled object. Therefore, simplified SRM models, presented, for example, in the input/output form are used in the controllers synthesis. This situation requires the verification of the operability of the synthesized controller and SRD in general, through an adequate imitating input-output SRM model. This article includes the development results of an imitating dynamic input-output model of switched-reluctance motors in the environment solid Thinking Embed (VisSim Embedded), the mathematical description of the imitating model and its modeling scheme. The model is constructed for an unsaturated SRM with an arbitrary number of stator and rotor poles, and also taking into account the active-capacitive resistance of an external constant-voltage source. The efficiency of the imitating model is verified on the simulation pattern of a 100-kW four-phase control SRM with 8 stator poles and 6 rotor poles, provided that it uses single-phase symmetric phase shifters and there are no limiting blocks of phase currents. The building-block concept of constructing an imitating SRM model allows to reconstruct it for any number of phases and other phase shifter algorithms.