摘要
基于背靠背式电流型变流控制的直驱永磁同步风力发系统,针对风力发电系统中测速编码器易受干扰以及成本和维修费用增加的问题,提出一种无位置传感器的永磁同步发电机控制方法。该方法基于对永磁同步发电机的模型分析,采用锁相环(PLL)估算法和模型参考自适应法(MRAS)分别进行转子位置和转速估算,利用估算的转子位置和转速对电流型直驱风力发电系统的永磁同步发电机进行转子磁链定向矢量控制(RFOVC)。仿真实验结果表明,基于PLL的PMSG RFOVC策略比基于MRAS的PMSG RFOVC策略具有更好的稳态及动态性能。
Based on direct drive permanent magnet synchronous generator （PMSG） control of wind turbine with back to back current source converters, a speed sensorless control scheme for PMSG was proposed to overcome the shortages in the system with the speed encoder, such as susceptible to interference, increase of the cost and mainte- nance cost, etc. In the scheme, in terms of analysis of the model for PMSG, the phase-locked loop （PLL） method and model reference adaptive system （MRAS） method for estimating rotor position and speed were adopted to form rotor flux oriented vector control （RFOVC） strategies to control the PMSG with the current source converters. Simulation results show that comparing with the PMSG RFOVC strategy based on the MRAS method, the PMSG RFOVC strategy based on PLL possess better steady and dynamic performances.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第10期1676-1682,共7页
Acta Energiae Solaris Sinica
基金
科技部国际合作项目(2007DFA71340)
