Announcement of the Nomination for the 2023 Chongqing Science and Technology Award Project by Guriwatt

1、 Project Name: Key Technologies and Applications for Safe and Reliable Operation of Power Electronic Converters II. Nominated by Chongqing Municipal Education Commission III. Nominated for First Prize of Science and Technology Progress Award IV. Project Introduction: The reliability of power electronic power converters is related to the reliability of each component of the converter. The survey and statistical results of the EPSRC funded project in the UK on the reliability of power converters in the industrial field show that the failure rate of semiconductor devices in converters accounts for 34%, which is one of the most prone components to failure in converters. The power converter applied in the field of high reliability is prone to thermal fatigue aging during operation due to the uneven electrical and thermal stress caused by the fluctuation of the processed power, intermittent working conditions, and changes in the working environment. Supported by projects such as the National Natural Science Foundation of China and school enterprise cooperation, this project has conducted in-depth research on the failure mechanism of power devices, power cycle accelerated aging test methods, online extraction methods for key fatigue aging failure characteristic quantities, non-invasive inverter state monitoring methods based on end electric heating characteristic quantities, and active thermal management control strategies considering life consumption at multiple time scales. A reliable operation and status monitoring method for power converters has been invented from a new perspective of accelerated aging testing, non-invasive online monitoring, and thermal balance management. The research results have been applied in the industry, solving the bottleneck problems that have plagued the industry's development and achieving good economic and social benefits. 5、 Main Intellectual Property and Standard Specifications Catalog Intellectual Property Category Intellectual Property Specific Name Authorization Number Owner Invention Patent Valid Status Invention Patent Safe Operation Control Method for Grid Connected Inverters under Grid Fault ZL201510996923.1 Chongqing University Valid Invention Patent Thermal Network Parameter Identification Method Based on IGBT Junction Temperature Information ZL201610060567.7 Chongqing University Valid Invention Patent IGBT Module Online Monitoring Method ZL201610537013.1 Chongqing University Valid Invention Patent Control Method and System for Grid Connected Inverters with Fault ZL201510935051.8 Chongqing University Valid Invention Patent Observer based Converter Parameter Online Identification Method ZL201610452198.6 Chongqing University Valid Invention Patent A Power Device Junction Temperature Control Circuit and Active Thermal Management Method ZL201510018504.0 Chongqing University Valid Invention Patent IGBT Aging State detection system ZL201610368682.0 Chongqing University Effective Invention Patent Power Grid Voltage Synchronization Signal Extraction Device and Method ZL201310244513.2 Chongqing University Effective Invention Patent Power Module Thermal Management Device and Method Based on Adaptive Adjustment of Drive Circuit ZL201510069108.0 Chongqing University Effective Invention Patent Driving Device and Method for IGBT Junction Temperature Estimation ZL201610225437.4 Chongqing University 6. Main completion units: Du Xiong, Sun Pengju, Luo Quanming, Zhou Luowei, Zhang Xiaofeng, Xiang Dawei, Wu Liangcai, Zhang Jun, Li Jun, Liang Yuanwen, Li Gaoxian, Fan Lijuan, Xiong Linyun, Ding Mingjin, Ma Xingqi