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Flux-Angle-Difference Feedback Control for the Brushless Doubly Fed Machine

Author

Listed:
  • Chaoying Xia

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

  • Xiaoxin Hou

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

  • Feng Chen

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

Abstract

In direct torque control (DTC) of the brushless doubly fed machine (BDFM) system, the inverter switching voltage vectors cannot always meet the control requirements, and the torque will lose control. For the losing control problem, this paper presents a solution of indirectly controlling torque by controlling the angle difference between the power motor (PM) stator flux and the control motor (CM) stator flux (called as the flux-angle-difference). Firstly, based on the CM static coordinate system BDFM model, the derivative equations of CM stator flux amplitude, the torque, and the flux-angle-difference are deduced. The losing control problem of BDFM’s DTC is studied by utilizing the CM stator flux amplitude and the torque derivatives. From the flux-angle-difference derivative, it is found that the phase angles of the flux-angle-difference derivative curves remain unchanged. Based on this property, by replacing the torque hysteresis comparator of conventional DTC with a flux-angle-difference hysteresis comparator, a modified control strategy called flux-angle-difference feedback control (FADFC) is proposed to solve the losing control problem. Finally, the validity and the good dynamic characteristic of the FADFC strategy are verified by simulation results.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:1:p:71-:d:124969
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    References listed on IDEAS

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    1. Milutin Petronijević & Nebojša Mitrović & Vojkan Kostić & Bojan Banković, 2017. "An Improved Scheme for Voltage Sag Override in Direct Torque Controlled Induction Motor Drives," Energies, MDPI, vol. 10(5), pages 1-16, May.
    2. 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.
    3. Borzou Yousefi & Soodabeh Soleymani & Babak Mozafari & Seid Asghar Gholamian, 2017. "Speed Control of Matrix Converter-Fed Five-Phase Permanent Magnet Synchronous Motors under Unbalanced Voltages," Energies, MDPI, vol. 10(10), pages 1-21, September.
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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. 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.
    3. 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.
    4. 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.

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