Abstract
Permanent Magnet Linear Synchronous Generators (PMLSG) has high power density and high efficiency, which is always employed in industrial application field. However, as temperature increases, it is easy to cause demagnetization of the permanent magnet, and the applications of PMLSG is limited. In this paper, a PMLSG is optimized which is used in a low speed power generation system. Firstly, a multi-physical coupling field system is described, and introduced the main factors which affecting the design of the PMLSM. Secondly, a multi-physics optimization method based on Genetic Algorithm (GA) is to improve the power density and efficiency. At the same time reduce the material cost of the generator. The thermal model is established and analysis the losses of PMLSG. The conductive heat transfer coefficient is calculated. Then, a Finite Element Analysis (FEA) model is established, and the electromagnetic properties of PMLSG were analyzed. The results of the electromagnetic field calculation are imported into the transient thermal analysis model by FEA, and the temperature of each part for PMLSG are calculated. Finally, an experimental test platform is built for verifying the correctness of the analysis.
Highlights
Permanent Magnet Linear Synchronous Generators (PMLSGs) which has high power density, high efficiency and high reliability are widely used in industrial field, especially in the direct-drive field
Based on the previous works, in this paper, a multiphysics design optimization method based on Genetic Algorithm (GA) of PMLSG is presented to improve the utilization of the materials and the electromagnetic performance
This section describes the multi-physics design optimization for the direct-drive wave energy converter based on the PMLSG
Summary
Permanent Magnet Linear Synchronous Generators (PMLSGs) which has high power density, high efficiency and high reliability are widely used in industrial field, especially in the direct-drive field. In this way, the costs of direct-drive wave power generator system are increased, especially the cost of PMLSG. How to optimize the design of PMLSG is very important for the direct-drive wave power generator. Based on the previous works, in this paper, a multiphysics design optimization method based on Genetic Algorithm (GA) of PMLSG is presented to improve the utilization of the materials and the electromagnetic performance
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