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作 者:冯洪高[1] 张赤斌[2] 林宝德 FENG Honggao;ZHANG Chibin;LIN Baode(Nanjing Institute of Railway Technology,Nanjing 210031,Jiangsu,China;School of Mechanical Engineering,Southeast University,Nanjing 210096,Jiangsu,China;Department of Electrical Engineering,Kunming University of Technology,Kunming 650093,Yunnan,China)
机构地区:[1]南京铁道职业技术学院,江苏南京210031 [2]东南大学机械工程学院,江苏南京210096 [3]昆明理工大学电气工程学院,云南昆明650093
出 处:《电气传动》2022年第6期28-32,共5页Electric Drive
摘 要:由于制造工艺和器件老化等原因,不同IGBT模块之间的阈值电压会存在一定差异,并对动态不均流产生很大影响。针对此问题,首先分析了阈值电压差异对并联均流的影响机理;然后建立了阈值电压差异与开通延迟时间之间的量化关系;最后以大功率IGBT模块并联为测试对象,通过对驱动延迟时间进行补偿的方法进行双脉冲测试,验证该方法的有效性。结果表明,该方法最大可以将不均流度从14.04%降低到2.21%。For the reasons of manufacturing technology and fatigue,there will be some difference in threshold voltage of different IGBT modules,which will cause great impact on dynamic current sharing.To solve this problem,firstly,the mechanism of different threshold voltage affecting dynamic current sharing was analyzed.Then,the quantitative relationship between threshold voltage and IGBT turn-on delay time was established.Finally,taking high power IGBT modules in parallel as test devices,the double-pulse test with compensating driving delay time was carried out to verify the proposed method.The results show that the maximum non-uniform fluidity can be reduced from 14.04%to 2.21%by this method.
关 键 词:内部参数差异 延迟时间补偿 大功率IGBT模块 动态均流
分 类 号:TN300[电子电信—物理电子学]
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