摘要
针对市电平衡式光伏发电系统与电网之间存在能量双向流动问题,研究双PWM变流器控制.根据三相双PWM变流器的电路拓扑结构搭建了基于dq坐标的数学模型,并结合空间矢量调制、三相锁相环设计了系统的双闭环控制策略及双PWM变流器的协调控制策略.根据系统功率平衡的实际需求,设计了直流侧电容、交流侧滤波电感的参数.仿真和实验样机验证了系统控制策略的有效性及双PWM变流器实现市电平衡式光伏发电系统中功率平衡的可行性.
In view of the problem of two-way flow of energy between balanced photovoltaic power generation system in city electricity and the grid,the control of dual PWM converter is studied.The mathematical model based on d qaxis is set up according to the circuit topology of threephase dual PWM converter,and the double closed loop control strategy of system and dual PWM converter coordinated control strategy are designed combining with the space vector modulation,three-phase digital phase-locked loop.The parameters of DC side capacitor and AC side filer inductor are designed according to the actual demand of system power balance.Simulation and experimental results verify the effectiveness of the system control strategy and the feasibility of the dual PWM converter to achieve the power balance in balanced photovoltaic power generation system in city electricity.
作者
陈国定
周凯
宋迪
李俊
缪克俊
CHEN Guoding ZHOU Kai SONG Di LI Jun MIAO Kejun(College of Information Engineering, Zhejiang University of Technology, Hangzhou 310023, China)
出处
《浙江工业大学学报》
CAS
北大核心
2017年第2期147-152,共6页
Journal of Zhejiang University of Technology
基金
浙江省大学生科技创新活动计划(新苗人才计划)资助项目(2016R403092)
关键词
光伏发电
能量双向流动
PWM变流器
双闭环控制
参数设计
photovoltaic power generation
two-way flow of energy
PWM converter
double closed loop control
design of parameters
作者简介
陈国定（1962-），男，浙江宁波人，教授，博士，主要从事电力电子技术和光伏逆变技术方面的研究等，E—mail：gdchen@zjut．edu．cn．
