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Air-Gap Flux Oriented Vector Control Based on Reduced-Order Flux Observer for EESM

Author

Listed:
  • Feng Cai

    (Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
    Feng Cai and Ke Li contributed equally to this work.)

  • Ke Li

    (School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
    Feng Cai and Ke Li contributed equally to this work.)

  • Xiaodong Sun

    (Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China)

  • Minkai Wu

    (Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China)

Abstract

Electrically excited synchronous motor (EESM) has the characteristics of high order, nonlinear and strong coupling, so it is difficult to be controlled. However, it has the advantages of adjustable power factor, high efficiency, and high precision torque control, so it is widely used in high-power applications. The accuracy of a flux observer influences the speed control system of EESM. Based on state observer in modern control theory and electrical excitation synchronous machine state equation, a reduced-order flux observer is designed. Using the first-order difference method and forward bilinear transformation method, the reduced-order flux observer is discrete, and the stability of the motor system is analyzed. The analysis shows that the stability of the system using the bilinear transformation method is better than that using the first order forward difference method. In motor operation, motor parameters will be affected by the factors of temperature, magnetic saturation, and motor frequency. In this paper, the influence of parameter variation on the motor system is studied by using the variation of the pole distribution. Finally, the speed regulation system using the reduced-order observer is simulated, which verifies the accuracy of the reduced-order flux observer observation.

Suggested Citation

  • Feng Cai & Ke Li & Xiaodong Sun & Minkai Wu, 2021. "Air-Gap Flux Oriented Vector Control Based on Reduced-Order Flux Observer for EESM," Energies, MDPI, vol. 14(18), pages 1-19, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:18:p:5874-:d:637090
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    References listed on IDEAS

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    1. Omar Sandre Hernandez & Jorge S. Cervantes-Rojas & Jesus P. Ordaz Oliver & Carlos Cuvas Castillo, 2021. "Stator Fixed Deadbeat Predictive Torque and Flux Control of a PMSM Drive with Modulated Duty Cycle," Energies, MDPI, vol. 14(10), pages 1-15, May.
    2. Emanuele Grasso & Marco Palmieri & Riccardo Mandriota & Francesco Cupertino & Matthias Nienhaus & Stephan Kleen, 2020. "Analysis and Application of the Direct Flux Control Sensorless Technique to Low-Power PMSMs," Energies, MDPI, vol. 13(6), pages 1-27, March.
    3. Yassine Kali & Magno Ayala & Jorge Rodas & Maarouf Saad & Jesus Doval-Gandoy & Raul Gregor & Khalid Benjelloun, 2019. "Current Control of a Six-Phase Induction Machine Drive Based on Discrete-Time Sliding Mode with Time Delay Estimation," Energies, MDPI, vol. 12(1), pages 1-17, January.
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