一种柔性直流输电换流器调制方法研究  

Research on a Kind of Modulation Method Used in Flexible DC Transmission

作　　者：朱劲松[1] 

机构地区：[1]泰州供电公司,江苏泰州225300

出　　处：《电源世界》2014年第5期31-35,共5页The World of Power Supply

摘　　要：围绕柔性直流输电换流器调制方法,选择载波移相脉宽调制技术为研究核心,通过数学推导的方式解析了其调制特点,运用Saber软件描述CPS-SPWM调制方式,说明其合成原理和提高多电平等效开关频率的作用,通过对比选择DSP芯片,提出并分析了基于TMS320F28335的CPS-SPWM实现方法,以模块化多电平换流器为实验对象,给出了具体的操作方法。实验结果表明,基于F28335的CPS-SPWM实现方法具有较好的输出效果,在换流器装置中具有良好的可行性。Focused on the modulation method of Flexible DC Transmission, the technology of carrier phase-shifted SPWM （CPS-SPWM） is reserached. Through the analysis of mathematical derivation, the characteristics of CPS-SPWM is listed, which is proved by the simulation results of Saber. DSPTMS320F28335 is chosen as the control block, the realizing method of CPS-SPWM based on F28335 is proposed and introduced. The practical debugging and validation are processed on the module multilevel converter （MMC） with specific approach given. The experimental waveform testifies that using F28335 to achieve CPS-SPWM, have demonstrated the excellent output and practical feasibility.

关 键 词：调制方法 载波移相 多电平 TMS320F28335 模块化多电平换流器 

分 类 号：TM76[电气工程—电力系统及自动化]