黑龙江科技学院学报2017，Vol.27Issue(3)：237-241,5.DOI:10.3969/j.issn.2095-7262.2017.03.007
闭环控制的空间矢量调制简化算法与中点平衡
Closed-loop implementation of SVPWM simplification algorithm and neutral point balance for NPC three-level inverter
常国祥 1赵龙龙 1李百宇 1王宏岩1
作者信息
- 1. 黑龙江科技大学,电气与控制工程学院,哈尔滨150022
- 折叠
摘要
Abstract
This paper is motivated by the need for improving the grid reliability of large-capacity three-level inverter. The study accomplishes this by using a closed-loop control scheme to verify the feasi-bility of simplified SVPWM algorithm without involving a large number of trigonometric functions in 60 ° coordinate system;achieving a neutral point potential balance control by dynamically adjusting redundant positive and negative short vector action time; and simulating the construction of a closed loop control model for NPC three-level SVPWM, using Matlab software. The results demonstrate that the simplified SVPWM algorithm features a higher efficiency, a better saving in processor resources, a better Sine in output voltage and current waveform of inverter, total harmonic distortion rate of current of only 3. 66%after LCL filter and above all, a small mid-point voltage shift. The scheme verifies the feasibility and ef-fectiveness of the three-level SVPWM algorithm and the mid-point balance control strategy.关键词
NPC三电平逆变器/空间矢量调制/中点平衡/闭环控制Key words
NPC three-level inverter/SVPWM/neutral point balance/closed-loop control分类
信息技术与安全科学引用本文复制引用
常国祥,赵龙龙,李百宇,王宏岩..闭环控制的空间矢量调制简化算法与中点平衡[J].黑龙江科技学院学报,2017,27(3):237-241,5.
