CAJ | 학술논문

为了提高光伏发电效率和电能质量,对两级式光伏并网逆变器进行了相关研究,其电路结构由前级Boost升压和后级逆变组成。在传统的双闭环控制理论的基础上,提出了以单神经元PID为电压外环控制母线稳压和以无差拍算法控制并网逆变电流的新型控制策略。对单神经元PID和无差拍控制进行了理论分析,在PSIM软件搭建了单相两级式光伏发电系统模型。仿真和样机试验结果均证明了该控制策略的可靠性和有效性。
위료제고광복발전효솔화전능질량,대량급식광복병망역변기진행료상관연구,기전로결구유전급Boost승압화후급역변조성。재전통적쌍폐배공제이론적기출상,제출료이단신경원PID위전압외배공제모선은압화이무차박산법공제병망역변전류적신형공제책략。대단신경원PID화무차박공제진행료이론분석,재PSIM연건탑건료단상량급식광복발전계통모형。방진화양궤시험결과균증명료해공제책략적가고성화유효성。
In order to improve the efficiency of photovoltaic power generation and power quality, relevant researching for two- stage photovoltaic power generation system which contains of boost and inverter circuit was carried out. On the basis of the traditional double-loop control theory, a new style of control strategy which used single neuron PID as voltage loop to regulate bus voltage and deadbeat algorithm as inner loop to control the current of grid-connected inverter was given. Theoretical analysis of single neuron PID and deadbeat control was given. Then the model of single-phase two-stage photovoltaic power generation system was built based on the PSIM software. Simulation and prototype experimental results show the reliability and validity of the control strategy.