大容量风电变流器中IGBT模块多并联策略A Strategy of IGBT Parallel for High Power Wind Power Converters
陈志强,于彬,刘洋,杨定堃
CHEN Zhiqiang,YU Bin,LIU Yang,YANG Dingkun
摘要(Abstract)：
IGBT(绝缘栅双极型晶体管)在耐压及通流方面性能的加强使其在大功率应用场景中较GTO(可关断晶闸管)、 IGCT(集成门极换流晶闸管)等其他全控器件更具优势。IGBT模块作为风电变流器的核心应用器件,为了满足变流器大功率化的需求,需要将IGBT模块并联使用。通过梳理现有IGBT模块并联应用技术的特点,分析并联模块组件在静态及动态方面的均流特性及其对变流器系统稳定性的影响。同时给出了一种IGBT模块损耗的计算方法,以此来论证IGBT模块损耗对变流器系统性能的影响。通过实验及仿真,分析IGBT模块不同数量并联对变流器系统稳定性及性能方面的影响,给出一种变流器中IGBT模块多并联应用的策略。
As voltage resistance and throughflow performances are enhanced, IGBT(insulated gate bipolar transistor) outperforms GTO(gate turn-off thyristor), IGCT(integrated gate-commutated thyristor) and other fully-controlled electronic devices in high-power application scenarios. As a core electronic device of wind power converter, IGBT modules need to be connected in parallel to meet the demand for high-power converters. In this paper, the features of the existing IGBT module's parallel technology are sorted out, and the static and dynamic current sharing characteristics of parallel-module components and their influence on the stability of the system are analyzed. A calculation method of IGBT loss is given to demonstrate the influence of IGBT loss on system performance. By experiment and simulation, the paper analyzes the influence of IGBT modules connected in parallel with different numbers on system stability and performance. Finally, the paper proposed an application strategy of multiple IGBT modules connected in parallel in converters.
关键词(KeyWords)：
绝缘栅双极型晶体管;并联均流;损耗计算;并联数量
IGBT;parallel current sharing;loss calculation;number of parallel
基金项目(Foundation): 国网电力科学研究院有限公司/南瑞集团有限公司/国电南瑞科技股份有限公司科技项目资助（524608190103）
作者(Author):
陈志强,于彬,刘洋,杨定堃
CHEN Zhiqiang,YU Bin,LIU Yang,YANG Dingkun
DOI: 10.19585/j.zjdl.202107006
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