微型机与应用Issue(13)：73-76,4.
电流型并网逆变器的模糊滞环控制
Current source grid connected inverter using fuzzy hysteresis technologies
黄少辉 1林培杰 1程树英 1孙占东1
作者信息
- 1. 福州大学 物理与信息工程学院 微纳器件与太阳能电池研究所，福建 福州 350108
- 折叠
摘要
Abstract
In order to improve the main shortcomings of hysteresis band control used in grid connected inverter where the switch frequency is not fixed, a new method that hysteresis comparator combined with fuzzy controler is proposed. By modeling the grid connected inverter and analyzing the principle of hysteresis current control , we have revealed that the switch frequency is closely related to the width of the hysteresis loop. We make grid voltage and the partial differential of instruction current as input variables to establish the fuzzy control rules. After some fuzzy arithmetic outputing hysteresis band. The switching frequency is stabilized by regulating the width of the hysteresis dynamically. The method has a high performance in reducing the current harmonics and decreasing the switching frequency. The simulation and experiment results demonstrate that this method is feasibility on stable hysteresis switching frequency, especially in zero crossing point and top point, meanwhile it can improve the harmonic characteristic.关键词
并网逆变器/模糊控制/电流滞环/固定开关频率Key words
grid connected inverter/fuzzy control/current hysteresis/fixed switch frequency分类
信息技术与安全科学引用本文复制引用
黄少辉,林培杰,程树英,孙占东..电流型并网逆变器的模糊滞环控制[J].微型机与应用,2015,(13):73-76,4.
