Iranian Journal of Electrical and Electronic Engineering

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Dc excitation of the field winding in a synchronous machine can be provided by permanent magnets. Permanent magnet synchronous machine (PMSM) can offer simpler construction, lower weight and size for the same performance, with reduced losses and higher efficiency. Thanks to the mentioned advantages these motors are widely used in different application, therefore analysis and modeling of them, is very important. In this paper a new, fast and simple method is presented to study performance of a PMSM connected to the converter. For this purpose, average-value modeling and related analytical relations which leads to the desired characteristics such as electromagnetic torque, dc current and dc voltage is presented and applied to PMSM & converter system. The advantage of this model lie in reduction of computation time compares to the other dynamic models while keeping accuracy quite acceptable. This model is applicable for studying the steady-state performance of systems as well as dynamic performance.

Keywords: Average-Value Modeling , Permanent Magnet Synchronous Machine (PMSM) , Converter , Commutation

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