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Input Disturbance Suppression for Unidirectional Matrix Converter with a Stability-Enhancing Modulation Scheme

Author

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  • Jiaxing Lei

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China
    Jiangsu Provincial Key Laboratory of Smart Grid Technology and Equipment, Southeast University, Nanjing 210096, China)

  • Chaofan Wei

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China
    Jiangsu Provincial Key Laboratory of Smart Grid Technology and Equipment, Southeast University, Nanjing 210096, China)

  • Shuang Feng

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China
    Jiangsu Provincial Key Laboratory of Smart Grid Technology and Equipment, Southeast University, Nanjing 210096, China)

Abstract

This paper proposes an input voltage disturbance suppression control strategy for the unidirectional matrix converter (UMC) with a new modulation scheme enhancing the stability. In the new scheme, the modulation index is directly, rather than reversely, proportional to the instantaneous amplitude of input filter capacitor voltages. Contrary to traditional schemes, the stability of the UMC with this new scheme is even better with the increase of the transferred active power, which is particularly suitable for applications with sinusoidal and balanced input conditions. As to the disturbed input conditions, the new scheme could introduce low-frequency harmonics into output currents. To address this issue, a feedback control strategy of output current amplitude is further proposed to eliminate the additional harmonics. Stability analysis of a UMC with the proposed modulation scheme and feedback control strategy is presented. Experimental results have verified the validity of the proposed control solution.

Suggested Citation

  • Jiaxing Lei & Chaofan Wei & Shuang Feng, 2019. "Input Disturbance Suppression for Unidirectional Matrix Converter with a Stability-Enhancing Modulation Scheme," Energies, MDPI, vol. 12(13), pages 1-13, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:13:p:2625-:d:246611
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    References listed on IDEAS

    as
    1. Weizhang Song & Jiang Liu & Xiangdong Sun & Fenjun Wu & Daqing Gao & Youyun Wang, 2018. "Research on Commutation and Coordination Control Strategy of Excitation Power Supply Based on Bidirectional Reduced Matrix Converter for Ion Accelerator," Energies, MDPI, vol. 11(12), pages 1-21, December.
    2. Pawel Szczesniak, 2019. "Challenges and Design Requirements for Industrial Applications of AC/AC Power Converters without DC-Link," Energies, MDPI, vol. 12(8), pages 1-18, April.
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    Cited by:

    1. Qiang Geng & Jiahe Feng & Haojie Sha & Weixi Zhou & Zhanqing Zhou, 2022. "Harmonic Analysis and Attenuation Strategy for a Two-Stage Matrix Converter Fed by Dual-Inverter Based on Pulse Barycenter Method," Energies, MDPI, vol. 15(12), pages 1-20, June.

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