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Single-phase full-bridge inverter control based on discrete adaptive sliding mode algorithm with error compensation.

Yun Zhang1, Zhenyu Tang2, Fenghui Xu3

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|October 10, 2025
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Summary
This summary is machine-generated.

This study simplifies single-phase full bridge inverter control by adapting DC-DC buck circuit strategies. An adaptive discrete sliding mode control method significantly reduces chattering and improves system accuracy and anti-interference capabilities.

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Area of Science:

  • Electrical Engineering
  • Control Systems
  • Power Electronics

Background:

  • Single-phase full bridge inverters are crucial in power electronics.
  • Traditional control methods often suffer from complexity and chattering.
  • Improving anti-interference and control accuracy is essential for inverter performance.

Purpose of the Study:

  • To propose a simplified and enhanced control strategy for single-phase full bridge inverters.
  • To reduce control process complexity and improve system anti-interference ability.
  • To minimize chattering and enhance control accuracy using an adaptive approach.

Main Methods:

  • Control process equivalence established between a single-phase full bridge inverter and two buck circuits.
  • DC-DC circuit control strategy adopted for real-time output voltage tracking.
  • A novel adaptive discrete sliding mode control (SMC) approach introduced with dynamic gain adjustment.
  • Mathematical proofs for sliding mode bandwidth, jitter range, and convergence steps.

Main Results:

  • The proposed method simplifies the control process and enhances anti-interference.
  • Adaptive SMC significantly reduces chattering by dynamically adjusting approach speed.
  • Sliding mode band width reduced from O(T) to O(T^3), improving control accuracy.
  • Demonstrated superior voltage tracking speed, reduced steady-state error, and enhanced disturbance rejection.

Conclusions:

  • The proposed control strategy offers a simplified and effective method for single-phase full bridge inverter control.
  • The adaptive discrete sliding mode control significantly improves performance by reducing chattering and enhancing accuracy.
  • The method provides a robust solution for applications requiring precise voltage tracking and disturbance rejection.