电工技术学报2012，Vol.27Issue(3)：159-163,5.
基于双调制波的单相三电平并网逆变器及电流优化控制
Dual-Modulation Waves Based Single-Phase Three-Level Grid-Connected Inverter and Current Improvement Control
摘要
Abstract
The modulation strategy of three-level grid-connected inverter is very complexible,and it is hard to be implemented with DSP.A dual-reference waves based three-level SPWM method suitable for implementation by DSP is proposed,and then the dynamic mathematical model of the grid-connected inverter based on the aforementioned PWM method is derived.On the basis,aiming at the problem that conventional grid-connected deadbeat control is sensitive with the change of filtering inductor,an online inductor identification method adopting instantaneous current samples is proposed.The deadbeat current control is improved with the proposed method,thus the grid-connected current control performance is efficient.Corresponding experimental results verify the accuracy and feasibility of the proposed method.关键词
三电平并网逆变器/双调制波/无差拍电流控制/电感辨识Key words
Three-level grid-connected inverter/dual-modulation waves/deadbeat current control/inductor identification分类
信息技术与安全科学引用本文复制引用
付家才,郭松林,沈显庆..基于双调制波的单相三电平并网逆变器及电流优化控制[J].电工技术学报,2012,27(3):159-163,5.基金项目
黑龙江省自然科学基金资助项目 （）
