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A Novel Filter Extracted Equivalent Control Based Fixed Frequency Sliding Mode Approach for Power Electronic Converters

Author

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  • Abdul Rehman Yasin

    (Department of Electrical Engineering, Capital University of Science and Technology (CUST), Islamabad Expressway, Kahuta Road, Zone-V, Islamabad 44000, Pakistan)

  • Muhammad Ashraf

    (Department of Electrical Engineering, Capital University of Science and Technology (CUST), Islamabad Expressway, Kahuta Road, Zone-V, Islamabad 44000, Pakistan)

  • Aamer Iqbal Bhatti

    (Department of Electrical Engineering, Capital University of Science and Technology (CUST), Islamabad Expressway, Kahuta Road, Zone-V, Islamabad 44000, Pakistan)

Abstract

The key issue in the implementation of the Sliding Mode Control (SMC) in analogue circuits and power electronic converters is its variable switching frequency. The drifting frequency causes electromagnetic compatibility issues and also adversely affect the efficiency of the converter, because the proper size of the inductor and the capacitor depends upon the switching frequency. Pulse Width Modulation based SMC (PWM-SMC) offers the solution, however, it uses either boundary layer approach or employs pulse width modulation of the ideal equivalent control signal. The first technique compromises the performance within the boundary layer, while the latter may not possess properties like robustness and order reduction due to the absence of the discontinuous function. In this research, a novel approach to fix the switching frequency in SMC is proposed, that employs a low pass filter to extract the equivalent control from the discontinuous function, such that the performance and robustness remains intact. To benchmark the experimental observations, a comparison with existing double integral type PWM-SMC is also presented. The results confirm that an improvement of 20% in the rise time and 25.3% in the settling time is obtained. The voltage sag during step change in load is reduced to 42.86%, indicating the increase in the robustness. The experiments prove the hypothesis that a discontinuous function based fixed frequency SMC performs better in terms of disturbances rejection as compared to its counterpart based solely on ideal equivalent control.

Suggested Citation

  • Abdul Rehman Yasin & Muhammad Ashraf & Aamer Iqbal Bhatti, 2019. "A Novel Filter Extracted Equivalent Control Based Fixed Frequency Sliding Mode Approach for Power Electronic Converters," Energies, MDPI, vol. 12(5), pages 1-14, March.
  • Handle: RePEc:gam:jeners:v:12:y:2019:i:5:p:853-:d:210999
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    References listed on IDEAS

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    1. Abdul Rehman Yasin & Muhammad Ashraf & Aamer Iqbal Bhatti, 2018. "Fixed Frequency Sliding Mode Control of Power Converters for Improved Dynamic Response in DC Micro-Grids," Energies, MDPI, vol. 11(10), pages 1-18, October.
    2. Adel Merabet, 2018. "Adaptive Sliding Mode Speed Control for Wind Energy Experimental System," Energies, MDPI, vol. 11(9), pages 1-14, August.
    3. Seghir Benhalima & Rezkallah Miloud & Ambrish Chandra, 2018. "Real-Time Implementation of Robust Control Strategies Based on Sliding Mode Control for Standalone Microgrids Supplying Non-Linear Loads," Energies, MDPI, vol. 11(10), pages 1-18, September.
    4. 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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    Cited by:

    1. Muhammad Awais & Abdul Rehman Yasin & Mudassar Riaz & Bilal Saqib & Saba Zia & Amina Yasin, 2021. "Robust Sliding Mode Control of a Unipolar Power Inverter," Energies, MDPI, vol. 14(17), pages 1-15, August.
    2. Marwen Bjaoui & Brahim Khiari & Ridha Benadli & Mouad Memni & Anis Sellami, 2019. "Practical Implementation of the Backstepping Sliding Mode Controller MPPT for a PV-Storage Application," Energies, MDPI, vol. 12(18), pages 1-22, September.

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