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3-Leg Inverter Control for 2-Phase Outer Rotor Coreless Torque Actuator in Hybrid Multi-D.O.F System

Author

Listed:
  • Kyoung Jin Joo

    (Department of Electrical Engineering, Hanyang University, Seoul 04763, Korea)

  • Gang Seok Lee

    (Department of Electrical Engineering, Hanyang University, Seoul 04763, Korea)

  • Hyun Seok Hong

    (Department of Electrical Engineering, Hanyang University, Seoul 04763, Korea)

  • Sung Hong Won

    (Department of Electric System, Dongyang Mirae University 62-160, GoChuk-Dong, GuRo-Gu, Seoul 08221, Korea)

  • Ju Lee

    (Department of Electrical Engineering, Hanyang University, Seoul 04763, Korea)

Abstract

Since an existing 3-phase inner rotor torque actuator (TA) has severe torque ripples, it is not appropriate for a gimbal system that requires precise position control. Therefore, a coreless TA is considered to eliminate the core causing torque ripples. In order to compensate for several problems (e.g., problems of production structures and output degradation) when a coreless type is used, the final 2-phase outer rotor is proposed for the low vibration and high power TA in the gimbal system. To control the 2-phase TA applied to such the gimbal system, special inverter control methods, such as bi-directional drive for tilting control and control for output torque improvement, are required. The 2-phase 3-leg inverter is free of DC capacitor voltage unbalance compared to the 2-leg inverter, and is economical because it uses less power switches than the 4-leg inverter. Therefore, the 2-phase 3-leg inverter is applied to drive the 2-phase outer rotor coreless TA of a hybrid gimbal system, and it is verified through simulation.

Suggested Citation

  • Kyoung Jin Joo & Gang Seok Lee & Hyun Seok Hong & Sung Hong Won & Ju Lee, 2018. "3-Leg Inverter Control for 2-Phase Outer Rotor Coreless Torque Actuator in Hybrid Multi-D.O.F System," Energies, MDPI, vol. 11(6), pages 1-11, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:6:p:1611-:d:153488
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