摘要
为了解决传统三电平逆变器SVPWM(Space VectorPWM,SVPWM)算法计算过程复杂、总谐波含量较高的问题,提出一种改进的SVPWM算法。改进的SVPWM算法将三电平逆变器空间矢量图以四边形进行扇区划分,通过矢量转换计算基本电压矢量作用时间,根据开关状态变换原则设计开关序列。仿真结果表明,运用改进的SVPWM算法后三电平逆变器可以正常输出波形稳定的三相交流电压,并且扇区判断时间变短、总谐波含量降低。
In order to solve the problem of complex calculation process and high total harmonic content of traditional three-level inverter SVPWM(Space Vector PWM, SVPWM) algorithm,an improved SVPWM algorithm is proposed. The improved SVPWM algorithm divides the three-level inverter space vector into quadrilateral sectors, calculates the basic voltage vector action time by vector conversion, and designs the switch sequence according to the switch state transition principle. The simulation results show that the three-level inverter can output the stable three-phase AC voltage with the improved SVPWM algorithm, and the sector judgment time becomes shorter and the total harmonic content decreases.
作者
安彬
黄晓峰
张炜
李纪欣
An Bin;Huang Xiaofeng;Zhang Wei;Li Jixin(Taiyuan Rail Transit Development Co.,Ltd.,Taiyuan Shanxi,030002;CLP North China Network Information Security Co.,Ltd.,Taiyuan Shanxi,030032)
出处
《电子测试》
2019年第18期37-39,共3页
Electronic Test
关键词
三电平逆变器
SVPWM
扇区分割
矢量转换
开关序列
Three-level inverter
SVPWM
sector segmentation
vector conversion
switching sequence
