摘要
分析了Boost逆变器工作原理,该逆变器采用两组独立对称的双向Boost电路,实现了交流输出电压高于直流输入电压。结合恒定频率滑模变结构控制设计方法,设计Boost逆变器并网滑模控制器,并利用Matlab工具对该系统进行仿真,并与PI控制对比。仿真结果表明,与PI控制相比,该设计方案及其控制方法能够有效控制逆变器输出电压与电网电压在幅值、频率和相位上一致,能够较好实现并网。
The work elements of Boost inverter were analyzed. The inverter is composed of two symmetrical boost converters, which can gain an output voltage higher than the de input one. First, it designed the cut-in sliding mode control for Boost inverter by using sliding mode control design method with constant frequency, then the system was studied by simulation using Matlab. The result of the simulation showed that compared with PI control, the design scheme and control method can effectively control the inverter output voltage＇s frequency, magnitude and phase according with the electrical network, and achieve cut-in＇ network much better.
出处
《电测与仪表》
北大核心
2010年第5期32-35,共4页
Electrical Measurement & Instrumentation
关键词
Boost逆变器
恒定频率
并网
滑模控制
boost inverter, constant frequency, cut-in, sliding mode control
