并网逆变器预测电流控制方法研究  

Research on Predictive Current Control Algorithm for Grid-connected Inverters

作　　者：谭令其 徐政[1] 陈锐坚 

机构地区：[1]清华大学深圳研究生院电力系统国家重点实验室深圳研究室,广东深圳518055 [2]深圳天源新能源股份有限公司,广东深圳518055

出　　处：《电气传动》2018年第1期23-27,共5页Electric Drive

摘　　要：对并网逆变器现有的预测电流控制算法进行了分析和比较,总结了算法改进的途径。在此基础上利用待定系数法提出了一种响应速度快、对电感参数鲁棒性好的新算法。利用无限冲激响应系统的分解揭示了该算法在低频段近似于具有相位补偿的比例积分调节器的本质,同时指出了现有算法的不足。最后通过单相光伏并网发电系统的仿真和实验,对新算法的有效性进行了验证。By analyzing and comparing several existing predictive current control algorithms as well as summarizing the ways of improvement,a novel algorithm with advantages of fast response and robust to the inductance parameter was proposed through applying a method of undetermined coefficients. By using the separation of infinite impulse response system,that the proposed algorithm bears the similar performance corresponding to a PI controller with phase compensation in low-frequency section was revealed,whilst some disadvantages of the existing algorithms were pointed out elaborately. Finally,the validity and effectiveness of the proposed algorithm are verified via the simulation and experiment on a single phase PV grid-connected system.

关 键 词：并网逆变器 预测电流控制 鲁棒性 相位补偿 

分 类 号：TM464[电气工程—电器]