可再生能源2013，Vol.31Issue(8)：18-21,27,5.
分布式光伏逆变器的优化设计研究
Optimization design of grid-connected photovoltaic inverte
摘要
Abstract
In this paper,the allocation of PV inverter components and their control strategies were optimized,and it proposed a novel dc voltage sensorless control strategy for PV generation system.The proposed method is realized by reconstructing the dc-link voltage and PV power respectively through the relationships between dc-link voltage and the amplitude of sinusoidal modulation signal,PV voltage and the duty cycle of the front boost converter in PV inverter.Then the real values of dc-link voltage and PV power can be indirect controlled according to regulate the estimated values,it is no longer need to measure dc-link voltage and PV voltage directly by dc voltage sensors which assumed in traditional grid-connected two-stage single-phase PV generation system.All dc voltage sensors are eliminated while not downgrade the system performance with regard to the MPPT accuracy and ac output quality.MATLAB simulations verified the proposed control strategy.关键词
光伏逆变器/电压传感器/占空比/优化设计/最大功率追踪Key words
grid-connected PV inverter/ DC voltage sensor/ duty cycle/ optimal control/ MPPT分类
信息技术与安全科学引用本文复制引用
袁建华,李波,徐泽晖,黄悦华..分布式光伏逆变器的优化设计研究[J].可再生能源,2013,31(8):18-21,27,5.基金项目
湖北省自然科学基金重点项目(2012FFA084) （2012FFA084）
湖北省自然科学基金项目(2012FFB03703) （2012FFB03703）
湖北国智恒三大电力科技有限公司研究生科研创新基金. （）
