Design optimization of permanent magnet synchronous machine for vertical axis wind turbine using gravitational search algorithm

This paper presents the design of permanent magnet synchronous machine (PMSM) used as a generator at medium speed in vertical axis wind turbine. The designed PMSM is used as inner rotor configuration. This paper addresses optimization of objective function as weight of PMSM, which is a paramount aspect using proposed designs and compares their performance indices using different approaches such as gravitational search algorithm (GSA) and its hybridization with particle swarm optimization (PSO). The formulated optimization problem is programmed in MATLAB and results using GSA and GSA-PSO have been obtained and compared in detail. The GSA-PSO provides better results at reduced weight with increased efficiency and minimum regulation.