FEM Simulation Study of Iron Losses for a Linear Generator

Sammanfattning: Over the past few years, electricity generation from renewable resources has increased. Power generation from the ocean waves is also one among them. The technology consists of many subsystems. Generators are considered the heart of the entire subsystem or technology. Therefore, the generator's design for the wave power technology should be considered seriously to enhance the technology. Linear generators are used in most wave power applications. Ideally, the generators are expected to have low losses. However, it is subjected to further losses, mainly in the form of mechanical and electromagnetic losses.  The electromagnetic losses exist in the form of Iron and copper losses. The main objective is to study the iron losses in a linear permanent magnet synchronous generator for wave power technology with no load condition. Iron losses will be studied in detail for a pole pitch in the linear permanent magnet synchronous generator. The loss coefficients are used for the calculation of iron losses in the linear generator. The linear permanent magnet synchronous generator will be designed using the Finite Element Method Magnetics (FEMM). The iron losses with the coefficient will be calculated using MATLAB. For the designed model, iron losses were determined, and the hysteresis loss was found to be 11.29W/m, and the eddy current was found to be 1.61W/m in the FEM simulation.