Linear PM Generator for Wave Energy Conversion

• Main Author: Parthasarathy, Rajkumar
• Other Authors: Gu,Guoxing
• Format: Others
• Language: en
• Published: LSU 2012
• Subjects: Electrical & Computer Engineering
• Online Access: http://etd.lsu.edu/docs/available/etd-04182012-121521/

The main objective of this thesis is to design a selected version of linear PM generator and to determine the electromechanical characteristics at variable operating conditions. To reach this objective, the linear generator with quasi-flat linear machine structure was selected and designed using the magnetic circuit theory. By applying 2-D and 3-D FEM the magnetic circuit was optimized and parameters of equivalent circuit were determined. The performance of generator operation are analyzed in steady-state and in dynamic conditions using MATLAB/SIMULINK. The analysis has been carried out at the secondary variable speed, which is changing sinusoidally according to the motion of the sea waves. The output and the input powers of the generator at rated speed of 2.2 m/s are 34KW and 40KW respectively. The maximun output power is generated when the generator is connected to a resistive load of 7.5Ω. The efficiency obtained for rated average speed of 1.4 m/s and at rated load resistance (of 7.5Ω) is equal to 85%.