摘要
开发基于永磁同步电泵的光伏扬水系统,新开发的潜水永磁同步电机(PMSM)使水泵运行效率明显提高;在两级式逆变器中,逆变调速采用无位置和速度传感器的简化矢量控制,改进电机参数静止辨识方法,保证系统控制性能;结合PMSM的特性,提出新的最大功率点跟踪(MPPT)控制策略,实现高精度MPPT控制,并提高两级式逆变器的运行效率,通过实验验证控制方法的有效性和系统运行的稳定性。
A solar pumping system based on a pump driven by a permanent magnet synchronous motor （PMSM） was developed. The new submersible PMSM could markedly enhance the efficiency of deep well pump. A simplified sensorless vector control was employed in the two-stage solar inverter, and the PMSM parameter identification method at standstill was improved to ensure control characteristics of the system. Taking the performance of PMSM into account, a novel maximum power point tracking （MPPT） strategy was proposed which could realize high MPPT precision and improve the efficiency of a two-stage solar inverter. Experimental results demonstrate the validity of the control scheme and the stability of system operation.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2014年第4期630-635,共6页
Acta Energiae Solaris Sinica
