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Solar‐PV augmented wind energy generation system with improved efficiency control of doubly fed induction generator through adjustable stator frequency
International Transactions on Electrical Energy Systems ( IF 1.9 ) Pub Date : 2020-11-12 , DOI: 10.1002/2050-7038.12690
Adikanda Parida 1 , Yogendra Singh 2 , Debashis Chatterjee 3
Affiliation  

The proposed work addresses the improved efficiency control of doubly fed induction generator (DFIG) connected to common DC‐link. The improved efficiency condition is obtained considering DFIG stator frequency as the degree of freedom. The adjustable stator frequency is obtained for minimum iron and copper losses of DFIG. The higher efficiency not only improves energy production from the same input but also increases life and reduces the occurrence of a fault in the machine. In this paper, a comparatively simple technique has been developed which facilitates appropriate augmentation of solar‐PV with the proposed DFIG based wind energy generation system (WEGS) through an automatic power exchange between DC‐link and AC‐link of the system. This not only helps to mitigate issues related to active power fluctuation in the existing WEGS but also maintains DC‐link voltage constant irrespective of the load variation in the DC‐link. Also in this paper, an MRAS based sensorless DFIG rotor position online measurement technique has been adopted which is more accurate in comparison to the existing techniques with insignificantly dependent on machine parameter variations. The developed control technique is successfully validated through proper simulation and experiments on a scaled prototype setup with 2.5 kW DFIG, 2.5 kW polycrystalline solar‐PV, and dSPACE CP1104 module, which produced satisfactory results.

中文翻译:

通过可调定子频率改进双馈感应发电机效率控制的Solar-PV增强型风能发电系统

拟议的工作解决了与公共直流母线相连的双馈感应发电机(DFIG)的效率提高控制问题。将DFIG定子频率视为自由度,可获得改进的效率条件。对于DFIG的最小铁和铜损耗,可获得可调定子频率。更高的效率不仅可以改善相同输入下的能量产生,还可以延长使用寿命并减少机器故障的发生。在本文中,已经开发出了一种相对简单的技术,该技术可通过在系统的直流链路和交流链路之间进行自动功率交换,来促进基于拟议的基于DFIG的风能发电系统(WEGS)的太阳能PV的适当增加。这不仅有助于减轻与现有WEGS中有功功率波动有关的问题,而且还可以保持直流链路电压恒定,而与直流链路中的负载变化无关。同样在本文中,已经采用了基于MRAS的无传感器DFIG转子位置在线测量技术,该技术与现有技术相比更加精确,并且与机械参数的变化无关紧要。通过在2.5 kW DFIG,2.5 kW多晶太阳能PV和dSPACE CP1104模块的规模化原型设备上进行适当的仿真和实验,成功开发的控制技术得到了验证,结果令人满意。已经采用了基于MRAS的无传感器DFIG转子位置在线测量技术,该技术与现有技术相比更加精确,并且与机械参数的变化无关紧要。通过在2.5 kW DFIG,2.5 kW多晶太阳能PV和dSPACE CP1104模块的规模化原型设备上进行适当的仿真和实验,成功开发的控制技术得到了验证,结果令人满意。已经采用了基于MRAS的无传感器DFIG转子位置在线测量技术,该技术与现有技术相比更加精确,并且与机械参数的变化无关紧要。通过在2.5 kW DFIG,2.5 kW多晶太阳能PV和dSPACE CP1104模块的规模化原型装置上进行适当的仿真和实验,成功开发的控制技术得到了验证,结果令人满意。
更新日期:2021-01-12
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