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<p>This paper proposes a modulated model predictive control (MMPC) strategy for a single phase GaN-based flying capacitor 3-level totem-pole voltage source inverter (VSI). The study investigates the performance of the system under both linear and nonlinear load conditions, with a comparative analysis of the step response and current harmonic distortion with conventional proportional-integral (PI) and proportional-resonant (PR) controllers. This paper analyzes two states, one for the positive half-cycle and the other for the negative half-cycle. It also develops a modeling approach to generate switching states for natural balancing. Both simulation and experimental results demonstrate that the proposed MMPC strategy effectively enhances the dynamic response and power quality, ensuring stable operation in the VSI mode. The effectiveness of the proposed modeling and control strategy are validated through comprehensive performance analyses, demonstrating stable and high-performance operation of the VSI mode under various load conditions.</p>

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Modulated model predictive current control scheme for LC filter equipped single phase GaN-based flying capacitor voltage source inverters

  • 期刊论文

  • 发表日期：

    2025年7月15日

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  • Sangwoo Ahn,
  • Kwonhoon Kim,
  • Younghoon Cho

摘要

This paper proposes a modulated model predictive control (MMPC) strategy for a single phase GaN-based flying capacitor 3-level totem-pole voltage source inverter (VSI). The study investigates the performance of the system under both linear and nonlinear load conditions, with a comparative analysis of the step response and current harmonic distortion with conventional proportional-integral (PI) and proportional-resonant (PR) controllers. This paper analyzes two states, one for the positive half-cycle and the other for the negative half-cycle. It also develops a modeling approach to generate switching states for natural balancing. Both simulation and experimental results demonstrate that the proposed MMPC strategy effectively enhances the dynamic response and power quality, ensuring stable operation in the VSI mode. The effectiveness of the proposed modeling and control strategy are validated through comprehensive performance analyses, demonstrating stable and high-performance operation of the VSI mode under various load conditions.