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学术报告第201988期

发布时间:2019-12-30 编辑:张惠兰 来源:科研

报告题目:On Fault Diagnosis, Tolerant and Predictive Control of Power Converters

报 告 人:周德洪 博士后(加拿大阿尔伯塔大学)

报告时间:201912301500

报告地点:南一楼中311

AbstractWith the power converters widely-spread in transportation, industrial, and military application, the reliable operation of the power converter is becoming a key technology in safety and reliability enhancement research. The semiconductors, which are the main components of the power converter, suffering from long-time high-frequency switching, are considered as one of the most fragile components in the power converter. The research into fault diagnosis and fault-tolerant control of the power converter will definitely enhance its reliability. The semiconductor faults feature with burstiness, randomness, collapsibility. Therefore, fast, accurate, and robust fault diagnosis methods are always highly desired. On the other hand, nonredundant topologies exploiting the possibility of minimum additional components can manage the power converter faults with a simple structure. The merits of nonredundant topologies make it very attractive for both industry and academia. However, nonredundant fault-tolerant topologies always have a feature of including many nonlinear constraints, reduced control freedom degrees, outputs conflicts. The researches on nonredundant fault-tolerant topology are still at the initial stage. Based on the signal processing and advanced nonlinear control theories, several fast and effective fault diagnosis methods for two-level and multilevel converters, and effective control scheme for the nonredundant fault-tolerant topologies are proposed to improve the reliability of the converter. On the other hand, the power converter system is a highly nonlinear switching system. The linearized control theory cannot fully explore the potential of these systems. Research on nonlinear control and modulation techniques can help improve the performance of the converters.

简介:周德洪,博士,现任加拿大阿尔伯塔大学博士后研究员,2012年毕业于华中科技大学自动化专业,获本科学位;2016年毕业于华中科技大学控制理论与控制工程专业,获博士学位;201610-201810月在新加坡南洋理工大学电气工程系从事博士后研究;201811月至今在加拿大阿尔伯塔大学电气与计算机系从事博士后研究工作。研究领域主要为电力电子与电机驱动系统的故障诊断与容错以及预测控制。5年发表学术论文30篇,其中第一作者IEEE汇刊14篇,论文Google Scholar累计引用336次。