Synchronous PI current control technique for three-phase PFC rectifier for PMSG wind generation system

Author(s):  
Yingtao Ma ◽  
Xudong Sun ◽  
Jianyun Chai
Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1964
Author(s):  
Francisco Emilio Rodarte Gutiérrez ◽  
Oscar Carranza Castillo ◽  
Jaime José Rodríguez Rivas ◽  
Rubén Ortega González ◽  
Edgar Peralta Sánchez ◽  
...  

In this work, methods are implemented to improve two aspects of energy quality in a wind generation system. First, the harmonic reduction is achieved by applying a linear control technique in the Grid Side Converter; and second, the power factor of the wind generation system using a Doubly Fed Induction Generator (DFIG) is adjusted by injecting reactive power. The reduction of the harmonic content is performed with a digital resonant controller, which tracks the periodic signals corresponding to the current harmonics of the Grid Side Converter (GSC), which is part of a “back to back” converter in a wind generation system. This technique allows implementing a current controller of the GSC with a high level of rejection of current harmonics, of frequencies with orders (1 + 6k) and (1 − 6k) (where k is an integer), when executed in the synchronous reference frame (dq). The purpose of this work is to inject currents to the grid with very low harmonic distortion and provide a method for tuning the resonant controller for a simple L filter; also, the GSC is used to generate reactive power. These two improvements achieve a unity power factor, and this is necessary to comply with the new codes where a leading power factor helps regulate the grid voltage.


Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Yang-Wu Shen ◽  
Ding Wang ◽  
Xiang-Tian Deng ◽  
Qing Li ◽  
Jian Zuo

The double-fed induction wind generator- (DFIG-) based wind generation system contains power electronic converters and filter capacitor and inductor, which will bring about high-frequency harmonics under the influence of controllers. Aiming at this problem, this paper studies the relation between the output current and the harmonic source at grid-side and rotor-side converters based on their control features in the DFIG system. Furthermore, the harmonic equivalent models of these two converters are built, and the influence of different factors on harmonic features is explored from four perspectives, i.e., modulation method, altering controller parameters, altering output power, and the unbalance of three-phase voltage. Finally, the effectiveness of the proposed model is verified through the 2 MW DFIG real-time hardware-in-the-loop test platform by StarSim software and real test data, respectively.


Proceedings ◽  
2018 ◽  
Vol 2 (20) ◽  
pp. 1269
Author(s):  
Pedro Hernández Tenorio ◽  
Jaime José Rodríguez Rivas ◽  
Oscar Carranza Castillo ◽  
Rubén Ortega González ◽  
José Victoriano Chávez Aguilar

The management of the power flow of a wind generation system is presented. This system is made up of a doubly fed induction generator and a Back to Back converter. The analysis focuses on the grid-side converter. The control loops of the current to the grid and the voltage of the DC-Link are designed based on proportional-integral controllers. These controls allow to manage the active and relative power that is injected into the grid. The Converter is simulated in Simulink of Matlab, where its operation as a rectifier and inverter is validated. This is able to be done due to the vector control technique used in the control structure of the wind generation system, in addition an adequate power exchange is obtained between the generator and the grid.


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