Design optimization of Quasi-flat linear PM generator for wave energy converter in south coast of Java using flower pollination algorithm

Abstract

South coast of Java has been highly preferred as the placement location of wave energy converter, due to its relatively huge energy potential. Furthermore, linear permanent magnet generator (LPMG) has became one of the popular methods to convert wave energy to electrical energy. Based on the shape of stator core, there are several models of LPMG. Quasi-flat LPMG is one of them, which has rectangular stator core shape. In this paper, the quasi-flat LPMG would be designed and optimized. The design considered wave characteristics in the south coast of Java. Meanwhile, the optimization was performed to minimize resulted copper loss for equal output power. To achieve the optimization goal, flower pollination algorithm (FPA) was used. This algorithm continuously adjusts several geometrical parameter of the LPMG by certain mechanism until the objective function is met. The results showed that the optimization could reduce the resulted copper loss of about 71.95%. It also increased the electrical efficiency from 83.2% to 95.28%.