用于海上风电场直流输电的新型变换器  

A New Converter for HVDC Light on Offshore Wind Power Farm

作　　者：刘文晋[1] 王志新[1] 

机构地区：[1]上海交通大学电气工程系,上海200240

出　　处：《电网与清洁能源》2009年第3期37-42,共6页Power System and Clean Energy

基　　金：2007年教育部留学回国科研启动基金(教外司[2007]1108号);上海市白玉兰科技人才基金(2007B073)。

摘　　要：针对永磁直驱风力发电机变流技术的特点,并根据柔性直流输电系统的电压和功率控制要求,提出了一种新型的直流变换器。该变流器采用三电平拓扑结构、内环电流峰值控制,以及适用于三电平Boost变换器电流峰值控制的双梯形波补偿控制方法,经Matlab/Simulink仿真,研究结果证明该变流器具有功率开关电压应力小、电抗器电流脉动小,以及运行可靠、动态响应性能好等优点,适用于海上风电柔性直流输电等大功率、高电压场合。A novel DC inverter, which is used in HVDC system, is introduced in this paper according to the characteristic nf converting technique for permanent magnet direct--driven wind generator system. Considering the requirement of voltage and power in HVDC, three--level topology structure, innerloop current peak control mode and dou hie--trapezoid wave, which suitable to current peak control of three--level Boost converter is used in this inverter; Simulation resuh of Matlab, Simulink shows low voltage stress on power switch, little pulsation current in inductance, and high operation reliability and fast response time, which makes it can be used in occasions of huge power and high voltage for offshore wind power farm.

关 键 词：轻型直流输电 三电平Boost变换器 电流峰值控制 双梯形波 MATLAB/SIMULINK 

分 类 号：TM721.1[电气工程—电力系统及自动化]