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Design and Implementation of Finite Time Nonsingular Fast Terminal Sliding Mode Control for a Novel High Step-Up DC-DC Converter

Author

Listed:
  • Yicheng Liu

    (College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China)

  • Jieping Wang

    (College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China)

  • Haiyan Tu

    (College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China)

Abstract

In this paper, a new, high step-up quadratic boost converter with high conversion efficiency is discussed. A storage capacitor and resonant inductor are connected in series with a clamp capacitor through a diode. These compose a voltage multiplier cell, which is applied on the switch of the quadratic boost converter. The clamp capacitor can protect the switch from a voltage spike and absorb energy when the switch turns off; then, the storage capacitor and resonant inductor are charged by the energy stored in the clamped capacitor to increase the voltage transfer gain. In addition, the voltage multiplier cell can also reduce the voltage stresses of power devices. Then, a 16 V input, 200 V output prototype with 80 W nominal power is built up and tested. Furthermore, a finite time fast terminal sliding mode (NFTSM) control is proposed, with constant frequency for the voltageFundamental Building B213:tracking control of this converter. The new NFTSM is obtained by introducing an adjustable nonlinear term into fast terminal sliding mode (FTSM) control, and a singularity problem is avoided. The experiment illustrates that the maximum efficiency of the proposed converter achieves 95% at D = 0.25 , V o = 150 V. The voltage stress is reduced to half of the corresponding component of the basic boost converter at the same voltage level. Moreover, the proposed NFTSM controller can track the reference signal, and provide a short settling time of about 48 ms with no overshoot, and the system response exhibits strong robustness against 11.7% input voltage disturbance and 30% load variation.

Suggested Citation

  • Yicheng Liu & Jieping Wang & Haiyan Tu, 2019. "Design and Implementation of Finite Time Nonsingular Fast Terminal Sliding Mode Control for a Novel High Step-Up DC-DC Converter," Energies, MDPI, vol. 12(9), pages 1-16, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:9:p:1716-:d:228721
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    References listed on IDEAS

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    1. Yong-Seng Wong & Jiann-Fuh Chen & Kuo-Bin Liu & Yi-Ping Hsieh, 2017. "A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems," Energies, MDPI, vol. 10(3), pages 1-17, March.
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