摘要
文中分析了带冲击性负荷的交流调功电路电流的周期特性和突变特性,为克服上述负载在突变时精准快速跟踪并控制有源滤波器输出电流快速变化的难题,对有源滤波器传统的PI控制算法进行改进,引入重复控制的思想,并根据交流调功电路谐波分布的特点,提出了一种改进的有源滤波器PI-PR-重复前馈控制算法,其中PR控制部分抑制低于工频的分数次谐波部分。对处于不同工况下的交流调功电路进行补偿仿真验证,结果证明所提出的新型算法能够有效地降低直流偏流,THD较小,具有较好的补偿效果。实际装置运行的现场测试结果与预期结果一致。
For the AC power-regulating circuit with impact load,this paper analyzes the periodic characteristics and the abrupt characteristics of the current.In order to solve the problem of accurately and quickly tracking and controlling the rapid change of output current of the active power filter(APF)when the load changes suddenly,the traditional PI control algorithm of APF is improved.Based on the idea of repetitive control and the characteristics of harmonic distribution of AC power circuit,this paper proposes a novel PI-PR-repeat feed-forward control algorithm of APF.In which PR control suppresses the fractional harmonic which is lower than the 50Hz.The compensation effect of AC power-regulating circuit under different working conditions is simulated.The results prove that the proposed novel algorithm can effectively reduce the direct current deflection with smaller THD and better compensation effect.When the physical device is put into operation,the actual operation results are consistent with the simulation results.
作者
立梓辰
张延迟
李硕
陈洋
解大
Li Zichen;Zhang Yanchi;Li Shuo;Chen Yang;Xie Da(Shanghai Dianji University,Shanghai 200120,China;Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《电测与仪表》
北大核心
2022年第2期53-62,共10页
Electrical Measurement & Instrumentation
基金
上海市科技创新行动计划(18DZ1203700)。
