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Investigation of ultra-lift Luo-converter with peak, average and hysteresis current-mode control

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Abstract

The Renewable energy system, electric vehicle, and telecommunication applications require relatively stable power converters with a high gain and enhanced noise immunity. A study of three different types of current-mode controllers for high-gain ultra-lift Luo-converter (ULC) is discussed in this paper. The stability of a constant frequency peak current-mode controller (PCM), an average current-mode controller (ACM) and a variable frequency hysteresis current-mode controller (HCM) are analyzed based on small-signal characteristics. Using mathematical modeling of the controllers, the closed-loop transfer functions such as control voltage to output voltage, current loop gain, inductor current to control voltage, and audio susceptibility are obtained. These transfer functions along with MATLAB simulation results for PCM, ACM and HCM controllers are compared. Then, the component losses of the ULC converter using PCM, ACM and HCM controllers are calculated and an efficiency comparison of different control techniques is done. Investigations of the voltage and current stresses of the switch and diodes are also carried out. Finally, a prototype is fabricated to validate the performance of the converter.

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Funding

The authors did not receive any support from the organization for the submitted work. The authors have no related financial or non-financial interests to disclose.

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Authors and Affiliations

  1. Department of Electrical and Electronics Engineering, SSN College of Engineering, Chennai, Tamil Nadu, India

    J. Raji & V. Kamaraj

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  1. J. Raji
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  2. V. Kamaraj
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Correspondence to J. Raji.

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Raji, J., Kamaraj, V. Investigation of ultra-lift Luo-converter with peak, average and hysteresis current-mode control. J. Power Electron. 21, 951–963 (2021). https://doi.org/10.1007/s43236-021-00235-7

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  • DOI: https://doi.org/10.1007/s43236-021-00235-7

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