Abstract
In this paper, the design procedure and optimization process of a multi-phase flux-switching permanent magnet (FSPM) generator for wind power generation system is investigated. Two different optimization methods—stepwise optimization and global optimization—are implemented and applied to the optimization of the proposed nine-phase FSPM generator-based wind power system. Both the advantages and disadvantages of two optimization methods are compared and analyzed. The results indicate that the stepwise optimization can achieve good effects on individual optimization objectives, whereas the global optimization can not only achieve a good optimization effect on a single objective, but also can find design point on the Pareto front, which can effectively optimize different multi-objects. The electromagnetic performance of the nine-phase FSPM generator is verified by experiments on a prototyped machine and the measured results show that the proposed generator exhibits the favorable characteristics of high torque, low torque ripple, and high efficiency.
Highlights
Energies 2021, 14, 4754. https://Among all renewable energy technologies, wind power generation is one of the most mature technologies with broad development and commercial application prospects
A nine-phase fluxswitching permanent magnet (FSPM) generator with 36 stator slots and 34 rotor poles is designed for wind power generation in this study
The influence of several key parameters on the important electromagnetic performances torque, torque per unit volume of permanent magnet (PM), and efficiency are analyzed by finite element analysis
Summary
Among all renewable energy technologies, wind power generation is one of the most mature technologies with broad development and commercial application prospects. Especially the research and development of generator topology, have become the key technology in the whole wind power industry. It directly affects the quality and efficiency of power output, and affects the performance and system structure of the whole wind power conversion device [1,2,3,4]. The direct-drive permanent magnet (PM) generator-based wind turbine exhibits many advantages, including high power density, high efficiency, simple structure, and high reliability. A permanent magnet synchronous generator (PMSG) is bound to become the market mainstream of high power (2.5 MW and above) wind turbines
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