计算机与现代化
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摘要: 光伏并网逆变器传统的开关函数模型在并网过程中的动态响应速度慢,影响了逆变器溃入电网的电能质量。为了解决这一问题,提高光伏并网逆变器的供电质量,分析光伏并网逆变器的混杂特性,通过对逆变器的开关动态引入逻辑变量,建立MLD模型,提出一种基于该模型的预测控制算法。仿真结果表明,基于MLD模型的预测控制算法改善了光伏并网系统的动态性能,达到并网要求条件的时间更短,验证了所提方法的可行。
关键词:  , 光伏并网逆变器, 混合逻辑动态模型, 模型预测控制
Abstract: The slow respond of the inverter PV grid system based on traditional switching function model affects the power quality feed into the grid. To solve this problem and improve the power quality of the inverter, after analyzing the PV grid-connected inverter confounding characteristics, by introducing logical variables for the inverter switching dynamics, the MLD model of the system was built. A predictive control strategy was proposed based on this kind of model. The comparison of simulation results show that the predictive control algorithm on the MLD model can improve the dynamic performance of the system, reduce the time of the system meeting the requirement of the grid, verify the feasibility of the proposed method.
Key words: PV grid-connected inverter; MLD, model predictive control
路 璐,龚仁喜,韦 潜. 光伏并网逆变器MLD建模及预测控制算法[J]. 计算机与现代化.
LU Lu, GONG Ren-xi, WEI Qian. Predictive Control Algorithm of PV Grid-connected Inverter Based on MLD Model[J]. Computer and Modernization.
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http://www.c-a-m.org.cn/CN/Y2015/V0/I9/122