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Author: search.filters.author.Phurahong, NuttaponSubject: search.filters.subject.ACMC buck converter

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    Implementation and Optimization of Two Degree of Freedom H∞ Loop Shaping Control for Average Current Mode Control Buck Converter using Genetic Algorithm
    (2021-01-01)
    Kaitwanidvilai, Somyot
    ;
    Phurahong, Nuttapon
    ;
    Suwan-Ngam, Warachart
    In this paper, we focus on the implementation and optimization of two degree of freedom (2DOF) H∞ loop shaping control for the DC-DC buck converter. The output voltage is controlled using the current control mode called the average current mode control (ACMC). The technique using the fixed structure robust controller technique, as well as genetic algorithm (GA), is applied, resulting in the reduction of the controller order and optimal parameter for the robust proportional integral (PI) controller. In this paper, the performance of the proposed controller is compared with those using the conventional 2DOF H∞ loop shaping controller and other techniques. According to both simulation and experimental results, the robust controller designed by the proposed technique is simple, low order, and practical, yet still retains both performance and robustness.
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    Fixed structure robust 2DOF H ∞ loop shaping control for ACMC buck converter using genetic algorithm
    (2012-10-02)
    Phurahong, Nuttapon
    ;
    Kaitwanidvilai, Somyot
    This paper proposes a new technique for designing a robust controller for an ACMC (Average Current Mode Control) buck converter. The proposed technique is based on the concept of 2DOF H <inf>∞</inf> loop shaping control (2DOF HLS) which can be adopted to find the robust controller. However, the structure of the conventional robust controller is normally complicated with high order. This makes the difficulty in the implementation. The proposed technique can overcome this problem by using genetic algorithm (GA) to solve the structure specified 2DOF H <inf>∞</inf> loop shaping control. Simulation results in the ACMC buck converter verify the effectiveness of the proposed controller. © 2012 IEEE.
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    Fixed structure robust 2DOF H-infmity loop shaping control for ACMC buck converter using genetic algorithm
    (2012-01-01)
    Phurahong, Nuttapon
    ;
    Kaitwanidvilai, Somyot
    ;
    Ngaopitakkul, Atthapol
    This paper proposes a new technique for designing a robust controller for an ACMC (Average Current Mode Control) buck converter. The proposed technique is based on the concept of 2DOF H∞ loop shaping control (2DOF HLS) which can be adopted to find the robust controller. However, the structure of this controller is normally complicated with high order because the order of the designed controller depends on the order of the plant and weighting function. This makes the difficulty in the implementation. The proposed technique can overcome this problem by using genetic algorithm (GA) to solve the structure specified 2DOF H- infinity loop shaping control. Simulation results in the ACMC buck converter verify the effectiveness of the proposed controller.