Study and Analysis of Robust Control Technology and Wide Bandgap Power Device-Based Power Converters

E. Chang, Chenxi Meng
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Abstract

In this paper, a robust control technology is proposed, and applied to wide bandgap power device-based power converters. The proposed robust control technology combines the excellences of a fast finite-time sliding mode (FTTSM) and a fuzzy tuning. The FTTSM can enforce system trajectory to the equilibrium within a short time. Nevertheless, the chattering exists in sliding surface of the FTTSM. The chattering may damage converter components, and cause high voltage harmonics. To reduce the chattering, the sliding surface is smoothed by the use of the fuzzy tuning. With the presented robust control technology, a high performance wide bandgap power device-based power converter with low total harmonic distortion and fast transient response yields, even in the presence of nonlinear loading. The classic power converter experimental results and the proposed power converter simulated results are compared, verifying the efficacy of the proposed robust control technology.
鲁棒控制技术及基于宽带隙功率器件的功率变换器的研究与分析
本文提出了一种鲁棒控制技术,并将其应用于基于宽带隙功率器件的功率变换器中。该鲁棒控制技术结合了快速有限时间滑模(FTTSM)和模糊整定的优点。FTTSM可以在短时间内使系统轨迹达到平衡状态。然而,FTTSM的滑动面存在抖振现象。抖振可能会损坏变换器元件,并产生高电压谐波。为了减少抖振,采用模糊调谐对滑动表面进行平滑处理。利用所提出的鲁棒控制技术,实现了一种基于大功率器件的高性能宽禁带功率变换器,该变换器在非线性负载下具有低总谐波畸变和快速的瞬态响应。将经典功率变换器的实验结果与所提功率变换器的仿真结果进行了比较,验证了所提鲁棒控制技术的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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