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Modelling and implementation of fixed switching frequency sliding mode controller for negative output elementary super lift Luo-converter

机译：负输出基本超举罗变频器的固定开关频率滑模控制器的建模与实现

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摘要

This study presents a reduced-order state-space average model and a fixed switching frequency (FSF) sliding mode controller (SMC) for the negative output elementary super lift Luo-converter (NOESLLC) operated in continuous conduction mode for application fields requiring the constant power source such as medical, telecommunication, industrial, military etc. The NOESLLC is an attractive dc-dc converter that can provide high-voltage transfer gain. Owing to the time-varying switched mode operation, the dynamic performance of the NOESLLC becomes highly non-linear. In order to enhance the dynamics performance and output voltage regulation of the NOESLLC, the FSFSMC is developed. The proposed FSFSMC is more appropriate to the inherently variable-structured NOESLLC when represented in the reduced-order state-space averagebased mathematical model. The three conditions of FSMSMC applicable to the NOESLLC, namely, existence, reaching and stability conditions are analysed. The performance of the developed controller is validated for its robustness to perform over a wide range of working conditions through both in MATLAB/Simulink models and as well as in the laboratory prototype with the comparative study of a typical proportional-integral-controller. Theoretical analysis, simulation and experimental results are presented to demonstrate the feasibility of the designed FSFSMC along with the complete systematic design procedure.
机译：这项研究提出了一个负序状态空间平均模型和一个固定开关频率（FSF）滑模控制器（SMC），用于以连续导通模式工作的负输出基本型超升力Luo转换器（NOESLLC），适用于需要恒定常数的应用领域。电源，例如医疗，电信，工业，军事等。NOESLLC是一种有吸引力的DC-DC转换器，可以提供高压传输增益。由于时变开关模式操作，NOESLLC的动态性能变得高度非线性。为了增强NOESLLC的动力学性能和输出电压调节，开发了FSFSMC。当在基于降阶状态空间平均值的数学模型中表示时，提出的FSFSMC更适合于固有的可变结构NOESLLC。分析了适用于NOESLLC的FSMSMC的三个条件，即存在，达到和稳定条件。通过在MATLAB / Simulink模型以及实验室原型中对典型比例积分控制器进行的比较研究，已开发的控制器的性能经过验证，具有鲁棒性，可以在各种工作条件下执行。理论分析，仿真和实验结果表明了设计的FSFSMC的可行性以及完整的系统设计程序。

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  • 来源
    《Power Electronics, IET》 |2012年第8期|p.1593-1604|共12页
  • 作者

    Kumar K.R.; Jeevananthan S.;

  • 作者单位

    Department of Electrical and Electronic Engineering, Jawaharlal Nehru Technological University, Hyderabad, Andhra Pradesh, India;

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