用于风电的模块化多电平变流器IGBT的定制化设计
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TM46

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国家自然科学基金资助项目(51777079,51577074)


Customized design for IGBTs of modular multilevel converter for wind power system
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Reliability and Control Method of Power Components of Electric Vehicle Converters under Multiple Stresses

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    摘要:

    模块化多电平换流器(MMC)已广泛应用于风力发电系统中,其中绝缘栅双极型晶体管(IGBT)模块的设计直接影响着系统的各项性能。而IGBT模块的设计选型缺乏理论指导,存在IGBT模块裕量选取过大造成的成本浪费现象,因此文中提出一种基于双目标优化的IGBT的定制化设计方法。首先以损耗和芯片成本作为IGBT定制化设计的指标,结合风力发电的年运行工况,根据风速的概率分布来评估IGBT损耗,通过双目标粒子群算法求得Pareto前沿。最后,分别采用IGBT模块和分立元件2种方法进行定制化设计,结果表明所提设计方法在降低器件成本的同时可以兼顾变流器的损耗和可靠性。

    Abstract:

    Modular multilevel converter (MMC) has been widely used in wind power system. The design of insulated gate bipolar transistor (IGBT) directly affects the performance of the system. Because of the lack of theoretical guidance in the design and selection of IGBT modules, there is a phenomenon of cost wasting which is caused by a large margin selection. Based on this, a customized design method for IGBT based on dual objective optimization is proposed. Firstly, the cost and loss of the IGBT are taken as the goals of the optimization. Combined with the annual operating conditions of wind power generation system, IGBT loss is evaluated according to the probability distribution of wind speed. Then, the Pareto front is obtained by dual-objective particle swarm optimization algorithm. Finally, customized design for IGBT module and discrete components are used to design the converter. The results show that the proposed design method reduces the cost of the device and takes into account the loss and reliability of the converter at the same time.

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何伟冬,王学梅.用于风电的模块化多电平变流器IGBT的定制化设计[J].电力工程技术,2021,40(4):10-17

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历史
  • 收稿日期:2021-02-21
  • 最后修改日期:2021-04-25
  • 录用日期:2021-04-07
  • 在线发布日期: 2021-08-11
  • 出版日期: 2021-07-28