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Study on the Static Load Capacity and Synthetic Vector Direct Torque Control of Brushless Doubly Fed Machines

Author

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  • Chaoying Xia

    (School of Electrical Engineering and Automation, Tianjin University, No. 92 Weijin Road, Tianjin 300072, China)

  • Xiaoxin Hou

    (School of Electrical Engineering and Automation, Tianjin University, No. 92 Weijin Road, Tianjin 300072, China)

Abstract

Compared to the doubly fed machine, the brushless doubly fed machine (BDFM) has high reliability and low maintenance requirements. First, by taking the negative conjugation of the control motor variables in rotor reference frame, a state-space model of BDFM is derived. It is then transformed into synchronous reference frame, called synchronous reference frame state-space model (SSSM). In this way, all the variables of the SSSM are DC under the static state. Second, on the basis of the analysis of static equations, the possible output torque limits are obtained. Third, the causes of losing control are analyzed by the flux and the torque derivatives. A new control strategy called synthetic vector direct torque control (SVDTC) is proposed to solve the losing control problems of the conventional direct torque control (DTC). Finally, the correctness of the results of this paper is verified by calculation examples and simulation results, the losing control problems can be solved, and the theoretical output capacity limits can be reached using SVDTC.

Suggested Citation

  • Chaoying Xia & Xiaoxin Hou, 2016. "Study on the Static Load Capacity and Synthetic Vector Direct Torque Control of Brushless Doubly Fed Machines," Energies, MDPI, vol. 9(11), pages 1-22, November.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:11:p:966-:d:83201
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    Citations

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    Cited by:

    1. Mei Su & Weiyu Jin & Guanguan Zhang & Weiyi Tang & Frede Blaabjerg, 2018. "Internal Model Current Control of Brushless Doubly Fed Induction Machines," Energies, MDPI, vol. 11(7), pages 1-19, July.
    2. Chaoying Xia & Jiaxiang Bi & Jianning Shi, 2023. "Investigation of a Cup-Rotor Permanent-Magnet Doubly Fed Machine for Extended-Range Electric Vehicles," Energies, MDPI, vol. 16(5), pages 1-23, March.
    3. Habib Benbouhenni & Nicu Bizon, 2021. "Improved Rotor Flux and Torque Control Based on the Third-Order Sliding Mode Scheme Applied to the Asynchronous Generator for the Single-Rotor Wind Turbine," Mathematics, MDPI, vol. 9(18), pages 1-16, September.
    4. Chaoying Xia & Xiaoxin Hou & Feng Chen, 2018. "Flux-Angle-Difference Feedback Control for the Brushless Doubly Fed Machine," Energies, MDPI, vol. 11(1), pages 1-16, January.
    5. Zhiwei Ruan & Chaohao Kan & Chenglong Chu & Taian Ren & Qiuming Chen, 2019. "Improvements of the Starting Performance of A Novel Brushless Doubly-fed Motor Based on the Composite Coils," Energies, MDPI, vol. 12(6), pages 1-20, March.
    6. Zhenming Li & Xuefan Wang & Lezhi Ou & Xinmai Gao & Fei Xiong, 2019. "Research of the Fundamental Wave of Wound-Rotor Brushless Doubly-Fed Machine," Energies, MDPI, vol. 12(6), pages 1-14, March.
    7. Kai Ji & Shenghua Huang, 2018. "Direct Flux Control for Stand-Alone Operation Brushless Doubly Fed Induction Generators Using a Resonant-Based Sliding-Mode Control Approach," Energies, MDPI, vol. 11(4), pages 1-22, April.
    8. Jianning Shi & Chaoying Xia, 2021. "Feedback Linearization and Maximum Torque per Ampere Control Methods of Cup Rotor Permanent-Magnet Doubly Fed Machine," Energies, MDPI, vol. 14(19), pages 1-21, October.

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