Design and analysis of SISO fuzzy logic controller for power electronic converters
Design and analysis of SISO fuzzy logic controller for power electronic converters
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电力电子变流器SISO模糊逻辑控制器设计与分析
DOI：
10.1109/fuzzy.2004.1375354
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
R. Oruganti
中科院分区：
文献类型：
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作者：
K. Viswanathan;D. Srinivasan;R. Oruganti
功率转换器是非线性系统，其通常采用被设计成在标称操作点处提供良好的小信号性能的线性控制器。然而，转换器的大信号响应通常较差。模糊逻辑控制器（FLC）在这种情况下使用改善响应，但它们的小信号响应不如线性控制器。在本文中，设计了一个SISO FLC，提供良好的小信号和大信号性能的升压转换器。除了降低控制复杂性之外，FLC在转换器中提供比线性控制器更好的瞬态响应。仿真结果表明这一点。利用描述函数法分析了系统的稳定裕度。
Power converters are non-linear systems that usually employ linear controllers designed to offer good small signal performance at the nominal operating point. Yet, the converter's large-signal response is generally poor. Fuzzy logic controllers (FLCs) used in such cases improve the response, but their small-signal response is not as good as that of linear controller. In this paper, design of a SISO-FLC that offers good small and large-signal performance in a boost converter is presented. Besides reducing control complexity, the FLC offers better transient response in the converter than the linear controller. Simulation results are presented to show this. Using describing function method, the system stability margins are also analyzed.