A Modeling Method of Multiphase Synchronous Generator for Shipboards Power System Based on PSCAD/EMTDC

摘要

The synchronous generators of shipboards power system are generally multiphase (mostly twelve phases), it means necessary to building the model by code programming because there aren't this ready-made component in EMTDC or other digital simulation software. In this paper, a programming method for numerical calculation of synchronous generator and interfacing program codes to PSCAD/EMTDC are described. According to generic rotate machine Park equation, trapezoid integral is adopted to make the math differential equations discrete to numerical difference expression. The paper emphatically deduces discrete algorithm for getting numerical transient solutions of synchronous generator model. For the sake of the verification for this modeling method, a three-phase synchronous generator model based on code program modeling is taken as test demonstration.