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Sliding mode controller with modified sliding function for DC-DC Buck Converter.

B B Naik1, A J Mehta2

  • 1Sarvajanik College of Engineering & Technology, Instrumentation & Control Engineering Department, Dr. R.K. Desai Marg, Near Mission Wockhardt Hospitals, Athwalines, Surat 395001, India.

ISA Transactions
|June 5, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a modified sliding mode controller for DC-DC Buck Converters, significantly reducing steady-state errors in load voltage. The new design enhances both steady-state and dynamic performance for controlled power supplies.

Keywords:
Buck convertorDC-DC convertersSliding mode control

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Area of Science:

  • Electrical Engineering
  • Control Systems

Background:

  • DC-DC Buck Converters are crucial for controlled power supplies.
  • Conventional sliding mode controllers exhibit steady-state errors in load voltage.

Purpose of the Study:

  • To design a modified sliding mode controller for DC-DC Buck Converters.
  • To improve steady-state and dynamic performance by eliminating steady-state errors.

Main Methods:

  • Design of a Sliding Mode Controller with a proportional integral type sliding function.
  • Derivation of conditions for the existence of sliding modes.
  • Stability analysis of the closed-loop system.
  • Simulation and experimental validation.

Main Results:

  • The proposed modified sliding function significantly improves steady-state performance.
  • Enhanced dynamic performance and better controller tuning parameter choices.
  • Elimination of steady-state error in load voltage.

Conclusions:

  • The modified sliding mode controller offers superior performance over conventional methods.
  • The control strategy is validated through simulations and experiments.
  • Adaptive tuning for load variations is a potential future enhancement.