数字式光伏阵列模拟器的研究  

AN INVESTIGATION ON DIGITAL PHOTOVOLTAIC ARRAY SIMULATOR

作　　者：王付胜[1] 文家燕[1] 张兴[1] 赵为[2] 

机构地区：[1]合肥工业大学电气与自动化工程学院,合肥230009 [2]阳光电源股份有限公司,合肥230088

出　　处：《太阳能学报》2012年第3期494-499,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51077034)

摘　　要：基于当前各种主流数字式光伏阵列模拟器的优缺点进行比较分析,提出一种新的拓扑结构:单相PWM整流器加电流可逆型斩波电路,整个模拟器的功率开关器件仅需一个IPM模块,结构紧凑。PWM整流器取代二极管整流电路,可降低电网的谐波污染;电流可逆型斩波电路取代Buck电路或桥式变流电路,可克服后者无法空载运行、结构复杂的缺点。对于电流可逆型斩波电路,在传统的电流环比例积分调节器基础上,提出一种基于负载电压前馈的电流环比例积分调节器,提高系统的快速性;对模拟器的数学模型和传递函数进行详细分析,定量给出调节器的参数整定方法。3kW光伏模拟器样机的实验结果验证了提出的主电路、控制算法的有效性和稳定性。On the basis of a variety of advantages and disadvantages of digital photovoltaic simulator comparative a- nalysis, a new topology was proposed, which is composed of single phase PWM rectifier plus half bridge chopper, and is compact since all power switching devices needed for the simulator can be integrated into one IPM module. The PWM rectifier replacing diodes rectifier can reduce the power network harmonic pollution ; the half bridge chop- per substituted for buck circuit can overcome the disadvantage of buck circuit because it can＇ t operate normally without load and the structure is complex. Compared with the structure of high frequency inverter, the half bridge chopper is simpler. The voltage feed-forward of load is added into traditional proportional and integrator current reg- ulator to improve the quick response performance of the current which is given by the I-V curve of photovohaic ar- ray. The mathematic model and transformer function for the proposed simulator is analyzed in detail; Based on which, the parameters of controller is deduced quantitatively. The simulation and experimental results of 3kW pro- totype for photovohaic array simulator validate the effectiveness and stability of the proposed power circuit and con- trol strategy.

关 键 词：光伏阵列 模拟器 PWM整流器 电压前馈 参数 

分 类 号：TK51[动力工程及工程热物理—热能工程]