Research On The Single-Phase Single-Stage Photovoltaic Grid-Connected Current Source Inverter

摘要：

　　Solar energy, which is abundant, easier to obtain and non-pollution etc, has a broad application prospect in photovoltaic power generation system. In traditional photovoltaic grid-connected power generation system, voltage source inverter(VSI) which needs extra voltage-boost link to achieve grid-connected criterion, is more used, not only increasing the power dissipation but also making the circiut structure more complex. However, the current source inverters(CSI) feature voltage-rise itself, which can both realize the maximum power point tracking and grid-connected criterion. This paper focuses on the single-phase current source inverter. Single-Phase current-source PWM grid-connected inverter is established for the research and the linear quadratic(LQ) optimal control method is applied to this inverter, which solved the transient oscillation defect of current source inverter. Through the method combined by computer simulation and experimental study, a laboratory prototype of 400W current source inverter has been implemented and tested. Results of simulation and experiment show that this method can make output AC currents sinusoidal and in phase with grid voltages.

关键词： Photovoltaic grid-connected current source PWM inverter linear quadratic(LQ) optimal control unity power factor

作者: WANG Jing CHANG Xiaowei LI Jielin

作者单位: State Grid HeBei Material Branch Corporation,Hebei Province,Shijiazhuang,050031 State Grid HeBei Electric Power Research Institute,Hebei Province,Shijiazhuang,050000

会议类型: 国际会议

会议名称: 2016中国国际供电会议(CICED2016)

会议地点: 西安

会议语种:英文

页码: 1-7

在线出版日期: 2016-09-01（万方平台首次上网日期，不代表论文的发表时间）