小型离网风力发电系统逆变器控制研究  

Study on the control of small wind power system off grid inverter

作　　者：王海星[1] 岳云凯 朱军[1] 王栋[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南454000

出　　处：《电子测量技术》2017年第2期20-24,共5页Electronic Measurement Technology

摘　　要：针对风力发电系统受环境影响较大,如风速变化影响导致发电机输出电压的不稳定与系统启动瞬间及负载突变对电能影响,进而破坏用电设备的问题,重复控制具有静态性能佳,而PI控制有动态性能好的优点,采用重复+PI控制策略,解决逆变直流侧电压波动、系统启动瞬间、负载突变引起的电压波形畸变,提高系统的动、静态性能,减少电压谐波含量,进而改善输出电能质量。通过仿真验证控制策略的优越性,明显改善输出电能的质量,使电压谐波控制在1.5%内。According to the wind power generation system under the influence of the change of wind speed leading to the generator output voltage instability,and the system start up moment and mutation load influence power quality.We combine with repetitive control which static performance is well and PI control which dynamic performance is well as a improved control strategy to solve the problems of inverter DC side voltage fluctuation,instant start,load mutation induced voltage waveform distortion.And we improve the system dynamic and static performance,reduce the harmonic content of voltage,and improve the output power quality.Through the simulation the superiority of the control strategy,improve the quality of the output power,the voltage fluctuation control in 1.5%.

关 键 词：离网逆变器 重复PI控制 电压、负载波动 电能质量 

分 类 号：TN712[电子电信—电路与系统] TN713