摘要
为了减少电力电子器件给光伏并网系统带来的大量谐波,研究了半周期SVPWM控制的三相双向双Buck/Boost变流器可以有效减少开关损耗和导通损耗,在SVPWM控制策略上引入模糊PI控制增加了系统的稳定性,降低了超调量,并采用了对高频谐波有较强抑制作用的LCL滤波器,实现系统的单位功率因数并网。采用Matlab/Simulink进行仿真实验,仿真结果表明,该闭环系统可以有效地实现单位功率因数并网,提高了系统稳定性和并网电流质量,减小了输出超调量,增强了系统鲁棒性。
In order to reduce amount of harmonics produced by the power electronic devices to photovoltaic grid sys-tem. In this paper a half-cycle SVPWM control with bidirectional dual Buck/Boost Converter is proposed. This study of the switching losses and conduction losses can be effectively reduced. In order to reduce the overshoot and in-crease the stability of the SVPWM control strategy,the fuzzy PI control system is introduced. LCL filter is used to suppress the high frequency harmonic and achieve unity power factor. Matlab/Simulink simulation is used to verify the closed-loop system can effectively achieve unity power factor and network,improve the quality and stability of the grid current system,reducing the overshoot output,and enhance the system robustness.
出处
《电子器件》
CAS
北大核心
2016年第2期412-419,共8页
Chinese Journal of Electron Devices
基金
浙江省科技厅科技计划项目(2012R10006-12)
作者简介
高秀梅（1989-），女，汉族，安徽省滁州市人，温州大学硕士，主要研究方向为电力电子装备信息化，990292549@qq．com.
钱祥忠（1963-），男，汉族，安徽省六安市人，温州大学教授，主要研究方向为电气传动与逆变技术、电器状态在线检测与控制技术、光机电一体化技术等，xzhqian@263．net。
