Modeling and control of unbalanced and distorted grid voltage of grid‐connected DFIG wind turbine,International Transactions on Electrical Energy Systems

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Modeling and control of unbalanced and distorted grid voltage of grid‐connected DFIG wind turbine
International Transactions on Electrical Energy Systems ( IF 1.9 ) Pub Date : 2021-03-10 , DOI: 10.1002/2050-7038.12857
Ahmed G. Abo‐Khalil _{1,

2} , Walied Alharbi ₁ , Abdel‐Rahman Al‐Qawasmi ₁ , Mohammad Alobaid ₃ , Ibrahem Alarifi ₃

Affiliation

This paper presents a mathematical modeling and current control of DFIG wind turbine system in the presence of unbalanced and harmonic distortions in the grid voltage. A proportional resonant (PR) current controller is modeled and implemented to reduce the impacts caused by the presence of double‐frequency, fifth and seventh harmonic components in the generator torque, active and reactive power and the grid active power to which the wind generation system is connected. To reduce the impacts of the presence of the harmonics and unbalanced voltage in the stator and grid active and reactive powers, the dq‐axis current components of these harmonics are controlled separately in the rotor and grid side converters. The use of PR controllers represents the addition of a specific function that eliminates the negative sequence and harmonic components from the rotor current components which reduce the oscillations of the generator torque and grid active power. The performance of the proposed control algorithm is validated through experiments and evaluated during the grid disturbances.

中文翻译：

并网双馈风力发电机组电网电压不平衡和畸变的建模与控制

本文介绍了在电网电压存在不平衡和谐波失真的情况下，DFIG风力发电机系统的数学建模和电流控制。对比例谐振（PR）电流控制器进行建模和实施，以减少发电机转矩，有功和无功功率以及风力发电系统所使用的电网有功功率中存在双频，五阶和七阶谐波分量而引起的影响已连接。为了减少定子和电网有功和无功中存在谐波和不平衡电压的影响，dq这些谐波的轴电流分量在转子和电网侧变流器中分别控制。PR控制器的使用表示增加了特定功能，该功能消除了转子电流分量中的负序和谐波分量，从而减少了发电机转矩和电网有功功率的振荡。通过实验验证了所提出控制算法的性能，并在电网扰动期间对其进行了评估。

更新日期：2021-05-03

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