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Control Strategy of Three-Phase Inverter with Isolation Transformer

Author

Listed:
  • Jie Chen

    (Department of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun, Beijing 100044, China)

  • Jun Li

    (Department of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun, Beijing 100044, China)

  • Ruichang Qiu

    (Department of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun, Beijing 100044, China)

  • Zhigang Liu

    (Beijing rail transit Electrical Engineering Technology Research Center, Beijing 100044, China)

Abstract

In order to improve the control performance of a train auxiliary inverter and satisfy the requirements of power quality, harmonics, and unbalanced factor, this paper proposed a design method of a double closed-loop control system based on a complex state variable structure. The method simplifies the design process and takes full account of the effects of coupling and discretization. In the current closed-loop process, this paper analyzed the limitations of the proportional integral (PI) controller and simplified to P controller. In the voltage closed-loop, the paper employed the PI controller plus the resonant controller, designed the parameters of the PI controller. and analyzed the optimal discretization method of the resonant controller under dq axis coupling. Finally, experiments and simulations were conducted to show that the proposed method can achieve the above improvements.

Suggested Citation

  • Jie Chen & Jun Li & Ruichang Qiu & Zhigang Liu, 2019. "Control Strategy of Three-Phase Inverter with Isolation Transformer," Energies, MDPI, vol. 12(20), pages 1-17, October.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:20:p:4005-:d:278836
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