新型低压船舶岸电供电电源系统的研究

针对目前我国低压船舶岸电电源系统存在的变压变频问题,提出一种基于可降压多脉冲自耦变压整流器的新型低压岸电供电电源系统,实现380V/50Hz～450V/60Hz三相电源的转换,为靠港船舶可靠供电.系统采用降压式12脉冲自耦变压整流技术降低谐波对系统及电网的影响,其中降压式自耦变压器可以实现对输入电压的降压调节,无需后续降压电路,减少系统的体积和质量,降低成本.文中详细分析了降压式12脉自耦变压整流器的工作原理,理论推导了输入电流、输出电压及变压器等效容量表达式.最后通过MATLAB建模进行仿真分析,验证了系统的正确性和可行性.

Research on a new novel of low voltage power supply system for ship shore power

For some technical problems of frequency and voltage conversion in the shore-to-ship power supply system,a novel of low voltage shore power supply system based on step-down multi-pulse auto-transformer rectifier was presented to achieve power conversion from 380V/50Hz to 450V/60Hz,which can supply ships from the ports reliably.The new system with step-sown 12-pulse auto-transformer rectifier can reduce the impact of harmonics on the system and power grid,and auto-transformer can realize voltage regulation which reduces the volume and cost of the system.No more voltage regulating circuit is needed in the system.The operating principle of step-sown 12-pulse auto transformer rectifier is analyzed in detail,and the expression of input current,output voltage and transformer equivalent capacity is derived.Finally,simulation analysis is carried out by MATLAB,which verifies the correctness and feasibility of the design.