Cogging Force Reduction of Permanent Magnet Single-Phase Linear Generator Applied in Wave Energy Conversion System
Jing Zhang, Haitao Yu, Min Qiang Hu, Qi Henry Chen, Lei Huang
Abstract
Jing Zhang, Haitao Yu, Min Qiang Hu, Qi Henry Chen, Lei Huang
Abstract
This paper proposes a permanent magnet single-phase linear generator (PMSPLG) with Halbach PM Array applied in wave energy conversion system and illustrates how the parameter changes in the geometry of permanent magnet and slot affect the cogging force of the generator. Moreover, the cogging force analysis method in PMSPLG is improved based on the cogging torque analysis method of permanent magnet synchronous rotation machine. Due to experiment results of prototype concordant with the analysis results of the analytical method and the finite-element method, the proposed model and analytical method are correct and effective.
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This paper proposes a permanent magnet single-phase linear generator (PMSPLG) with Halbach PM Array applied in wave energy conversion system and illustrates how the parameter changes in the geometry of permanent magnet and slot affect the cogging force of the generator. Moreover, the cogging force analysis method in PMSPLG is improved based on the cogging torque analysis method of permanent magnet synchronous rotation machine. Due to experiment results of prototype concordant with the analysis results of the analytical method and the finite-element method, the proposed model and analytical method are correct and effective.
Key concepts: Cogging torque, Permanent magnet synchronous generator, Magnet, Finite element method, Linear congruential generator, Generator (circuit theory), Reduction (mathematics), Torque