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A Study on a Linear Magnetic-Geared Interior Permanent Magnet Generator for Direct-Drive Wave Energy Conversion

Author

Listed:
  • Ningjun Feng

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Haitao Yu

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Minqiang Hu

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Chunyuan Liu

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China
    College of Mechanical and Electrical Engineering, Jiaxing University, Jiaxing 314000, China)

  • Lei Huang

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Zhenchuan Shi

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

Abstract

The conventional linear permanent magnet generator (CLPMG) for direct-drive wave energy conversion (WEC) has experienced many drawbacks that are difficult to overcome such as low power density and bulky system volume. To improve power density, this paper proposes a linear magnetic-geared interior permanent magnet generator (LMGIPMG) with tubular topology, which artfully incorporates a linear magnetic gear into a linear permanent magnet generator. The operating principle of the LMGIPMG is introduced, and a detailed analysis of air gap flux density, thrust force characteristics, and no-load and load performances are presented and discussed by using finite element method. The CLPMG, which produces the same power as the LMGIPMG, has about four times the volume of the latter. A prototype CLPMG is manufactured to verify simulation results against experimental tests. The design method and the operation conditions of LMGIPMG and CLPMG are both consistent; thus, the performance of LMGIPMG meets the operation requirements of the direct-drive WEC.

Suggested Citation

  • Ningjun Feng & Haitao Yu & Minqiang Hu & Chunyuan Liu & Lei Huang & Zhenchuan Shi, 2016. "A Study on a Linear Magnetic-Geared Interior Permanent Magnet Generator for Direct-Drive Wave Energy Conversion," Energies, MDPI, vol. 9(7), pages 1-12, June.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:7:p:487-:d:72661
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    Citations

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    Cited by:

    1. Jing Zhang & Haitao Yu & Zhenchuan Shi, 2018. "Design and Experiment Analysis of a Direct-Drive Wave Energy Converter with a Linear Generator," Energies, MDPI, vol. 11(4), pages 1-15, March.
    2. Yu Zou & Ka Wai Eric Cheng, 2017. "A Vertical Flux-Switching Permanent Magnet Based Oscillating Wave Power Generator with Energy Storage," Energies, MDPI, vol. 10(7), pages 1-19, June.
    3. Gerardo Ruiz-Ponce & Marco A. Arjona & Concepcion Hernandez & Rafael Escarela-Perez, 2023. "A Review of Magnetic Gear Technologies Used in Mechanical Power Transmission," Energies, MDPI, vol. 16(4), pages 1-32, February.
    4. Raju Ahamed & Kristoffer McKee & Ian Howard, 2022. "A Review of the Linear Generator Type of Wave Energy Converters’ Power Take-Off Systems," Sustainability, MDPI, vol. 14(16), pages 1-42, August.
    5. Jing Zhang & Haitao Yu & Zhenchuan Shi, 2019. "Analysis of a PM Linear Generator with Double Translators for Complementary Energy Generation Platform," Energies, MDPI, vol. 12(24), pages 1-12, December.
    6. Rui Mendes & Maria Do Rosário Calado & Sílvio Mariano, 2018. "Maximum Power Point Tracking for a Point Absorber Device with a Tubular Linear Switched Reluctance Generator," Energies, MDPI, vol. 11(9), pages 1-18, August.
    7. Tao Xia & Haitao Yu & Zhenchuan Shi & Rong Guo, 2018. "Comparative Analysis and Experimental Verification of a Linear Tubular Generator for Wave Energy Conversion," Energies, MDPI, vol. 11(7), pages 1-16, July.
    8. Yujun Shi & Linni Jian, 2018. "A Novel Dual-Permanent-Magnet-Excited Machine with Flux Strengthening Effect for Low-Speed Large-Torque Applications," Energies, MDPI, vol. 11(1), pages 1-17, January.
    9. Jin Liu & Wenxiang Zhao & Jinghua Ji & Guohai Liu & Tao Tao, 2016. "A Novel Flux Focusing Magnetically Geared Machine with Reduced Eddy Current Loss," Energies, MDPI, vol. 9(11), pages 1-15, November.
    10. Hong-wei Fang & Ru-nan Song & Zhao-xia Xiao, 2018. "Optimal Design of Permanent Magnet Linear Generator and Its Application in a Wave Energy Conversion System," Energies, MDPI, vol. 11(11), pages 1-12, November.

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