摘要
对于光储系统中三相交错并联Buck-Boost双向DC-DC变换器,现多采用移相PI控制算法。但传统的PI控制存在调节参数过多、三相电感电流不能均流等问题。对此,提出了一种新型模型预测控制算法,该算法在传统模型预测的基础上采用变步长的两步预测控制,并通过比较三相电感电流的大小寻找最优的开关状态。在Matlab/Simulink平台上搭建仿真模型,验证了该方法在稳定母线电压的同时,不仅减少了电压电流的纹波大小,而且实现了三相电感电流的均流。
In the PV and battery storage system, the three-phase staggered and parallel Buck-Boost DC-DC converter is implemented with the phase-shifting PI control algorithm. However, the traditional PI control has problems of too many adjustment parameters and no flow uniformity of three phase inductance current. A new kind of model prediction control algorithm was proposed. On the basis of the traditional model prediction, the two-step prediction control with variable step was used to search for the optimal switch state by comparing the three-phase inductance current. The simulation model was built on the Matlab/Simulink platform to verify that this method not only reduces the ripple size of the voltage and current, but also realizes the current uniformity of the three-phase inductance current.
作者
伍青
徐自强
吴孟强
张震华
杨娟
WU Qing;XV Zi-qiang;WU Meng-qiang;ZHANG Zhen-hua;YANG Juan(School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu Sichuan 611731, China)
出处
《电源技术》
CAS
北大核心
2019年第7期1208-1211,共4页
Chinese Journal of Power Sources
基金
反射型槽式聚光与光伏集成下的热电联供研究项目(2016GZ0150)
NEPCS系列新型智能光储一体化变流器产业化及示范项目(2016CC0053)
关键词
光储系统
交错并联
模型预测控制
开关状态
PV and battery storage system
staggering and in parallel
model prediction control
switch state
作者简介
伍青(1993-),女,四川省人,硕士研究生,主要研究方向为智能光储一体化;通信作者:徐自强.
