基于滤波电感在线估算的并网逆变器直接功率预测控制  

Direct predictive power control for grid-connected inverters based on inductance online estimation

作　　者：杨勇[1] 吴国祥[2] 谢门喜[1] 

机构地区：[1]苏州大学城市轨道交通学院,江苏苏州215021 [2]南通大学电子信息学院,江苏南通226019

出　　处：《电力系统保护与控制》2011年第12期84-89,共6页Power System Protection and Control

基　　金：江苏省高校自然科学研究项目资助(10KJD480004)

摘　　要：三相并网逆变器的直接功率预测控制建立在精确数学模型基础上,对滤波电感参数比较敏感。针对直接功率预测控制这一特点,提出了一种在线估算的直接功率预测控制。将在线估算出来的滤波电感进行直接功率预测控制。仿真结果表明:基于电感在线估算的直接功率预测使功率有很好的静、动态特性;同时使输出电流正弦度良好,谐波含量小。从而验证了该方案的可行性和正确性。The predictive direct power control for three-phase grid-connected inverters is realized based on the accurate mathematical model and is sensitive to the filter inductance,due to which the predictive direct power control with inductance online estimation is presented.The value of inductance online estimation is used for the predictive direct power control.Simulated results show that the predictive direct power control based on inductance online estimation has a good dynamic and static power performance,and provides good sinusoidal output currents with small harmonic component.So the feasibility and validity for the control strategy are verified.

关 键 词：三相并网逆变器 直接功率预测 精确数学模型 滤波电感 电感在线估算 

分 类 号：TM464[电气工程—电器]