摘要
提出了一种基于模型预测电流控制(model predictive current control,MPCC)的具有有源滤波功能的光伏并网(photovoltaic power generation and active filter,PV-AF)系统控制策略。电流环采用模型预测控制(model predictive control,MPC)方法,在???坐标系下实现对光伏逆变电流指令和谐波补偿电流指令的无静差跟踪,使PV-AF系统将光伏阵列的能量注入交流电网的同时,有效补偿本地并联负载谐波电流。建立了MPC中的预测模型、优化函数等,分析了模型参数对系统稳定性和控制精度的影响。实验结果验证了所提策略的有效性。
A model predictive current control （MPCC） based control strategy for photovoltaic power generation and active filter （PV-AF） system is proposed. Utilizing model predictive control （MPC） the current loop implements the tracking with zero steady-state error for photovoltaic grid-connected current reference and harmonic compensation current reference under αβγ coordinate system, thus the harmonic current in local parallel load can be compensated effectively when the PV-AF system injects electric power into AC power grid. The prediction model and cost function of MPC are established, and the impacts of model parameters on both system stability and control accuracy are analyzed. The effectiveness of the proposed control strategy is validated by experimental results.
出处
《电网技术》
EI
CSCD
北大核心
2014年第10期2932-2937,共6页
Power System Technology
基金
"本科教学工程"国家级大学生创新创业训练计划项目(201310290067)的资助
关键词
模型预测电流控制
PV-AF系统
稳定
鲁棒
model predictive current control
photovoltaicpower generation and active filter （PV-AF） system
stability
robustness
