摘要
本文提出一种ＧＴＯＰＷＭ电流型变流器模块的连接方法。Ｎ×Ｎ个变流器模块组成一个方阵，通过适当地设计调制信号和载波信号的相位，该方阵能够实现特大功率变换，且网侧谐波得到抑制。由于ＰＷＭ主要用来实现功率的调节，因此ＧＴＯ仅需工作在较低的开关频率。本方案只需用Ｎ个移相变压器，就能获得６Ｎ２脉波变流器的特性。通过仿真，将变流器模块方阵与经典变流器模块直接并列结构作了比较。
A novel multi modular GTO current converter structure is presented to application to superconducting magnetic energy storage system. N×N converters are arranged in a array form.The GTO current converter array with appropriate arrangement of modulation and carrier signals can output large power with high quality line current waveforms.With using of only N transformers,6 N 2 pulse number converter performance is obtained.Only low switching of GTO is required since PWM is primarily used as a method to control flow of power instead of reducing harmonics.It is compared with conventional direct paralleled multi modular converter structure.The results of simulation are presented.
出处
《中国电机工程学报》
EI
CSCD
北大核心
1998年第2期124-130,共7页
Proceedings of the CSEE
关键词
功率变换
超导储能
变流器
谐波
模块方阵
multi modular converters\ \ PWM converters\ \ high power converter\ \ SMES\ \ PWM
