三相光伏并网逆变器的控制与研究  

Study and Control of three-phase photovoltaic grid-connected inverter

作　　者：张宁[1] 秦凯[1] 杨世宁[1] 

机构地区：[1]黑龙江科技大学电气与控制工程学院,哈尔滨150022

出　　处：《黑龙江电力》2015年第5期441-446,共6页Heilongjiang Electric Power

摘　　要：为有效地使用光伏能源,介绍了光伏并网控制系统的构成和探讨了逆变器的控制方法。在MATLAB/SIMULINK环境下,建立三相光伏逆变器控制系统仿真模型,采用双回路的电压电流控制策略,对采集的数据进行CLARK和PARK坐标变换,然后经过经典的PI调节后送入相应的控制芯片来产生SPWM波形对逆变桥开关进行控制,使系统能够及时检测电网波动,断开逆变器与电网的连接。,通过仿真试验结果证明了该控制算法的正确性与可行性,验证了这种双回路控制策略的有效性。In order to effectively use PV,this paper introduced the constitution of photovoltaic grid-connected control system and discussed the control method of inverter. It is the method that adopts the simulation model of three-phase photovoltaic inverter control system established in MATLAB / SIMULINK and double-loop voltage-current control strategy to make CLARK and PARK coordinate conversion on the acquired data so as to control inverter bridge by SPWM wave form generated by the corresponding control chip after the typical PI regulation,which enables the system to detect network oscillation in time and to break the link between inverter and network. Finally,the result of simulation proved the correctness and feasibility of the control algorithm.

关 键 词：光伏发电 三相逆变器 PI调节 SPWM 

分 类 号：TM615.2[电气工程—电力系统及自动化]