基于碳化硅器件的高频化高效率船用变频器

Design of high frequency and efficiency marine frequency converter based on SiC device

碳化硅器件的应用能够显著减小电力电子变换器的重量、体积、成本,大幅提升电力电子系统的性能。本文基于碳化硅器件的高频化高效率船用变频器设计,采用电压源型双PWM交-直-交变频器系统拓扑结构,前级整流部分和后级逆变均使用最新一代碳化硅器件,提出有源前端(AFE)变频器系统拓扑结构、整流与逆变系统控制策略,以及主电路参数计算方法。系统仿真和试验结果表明,该设计方式是实现船用变频器高性能、小型化的有效技术途径。

The weight,volume,and cost of power electronic converter will be significantly decreased by the use of silicon carbide device,which will also enormously increase the performance of power electronic system.A design of high frequency and efficiency marine frequency converter based on silicon carbide device is presented in this paper.The frequency converter system structure is based on the voltage-source dual PWM AC/DC/AC topology,in which the rectifier part and the inverter part make use of the latest generation silicon carbide device.Active front-end frequency converter structure,control system strategy of the rectifier and the inverter,and parameters calculation method of the main circuit are included.The system simulation and experimental results show that it is an effective technological approach to implementation of marine frequency converter with high performance and miniaturization.