scholarly journals Effect of Grid Faults on Dominant Wind Generators for Electric Power System Integration:A Comparison and Assessment

2021 ◽  
pp. 70-78
Author(s):  
M. M. Metwally ◽  
M. K. Ratib ◽  
M.M. Aly ◽  
A.M. Abdel‑Rahim
Keyword(s):  
Permanent Magnet ◽  
Electric Power ◽  
Synchronous Generator ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Permanent Magnet Synchronous Generator ◽  
Wind Generators ◽  
Squirrel Cage ◽  
Squirrel Cage Induction Generator ◽  
Doubly Fed

In recent times, various types of wind generators have been linked to the power grids globally and the focus has been to control them to be more efficient and reliable. This study concisely discusses performance analysis, modeling, and assessment of different wind generators (permanent magnet synchronous generator, doubly-fed induction generator, squirrel cage induction generator), covering their benefits, drawbacks, and impact on the electric power systems. This comparison aims to guarantee that their technical and economic evaluations are comparable, allowing engineers to make a more informed decision about which generator is best suitable for their installation. Findings for the investigated wind generators lead to significant observations about their application fields, such as permanent magnet synchronous generator outperforms doubly-fed induction generator and squirrel cage induction generator, especially during grid disruptions; on the other hand, squirrel cage induction generator is simple and inexpensive.

Study on the Transient Power Angle Characteristic of Doubly-Fed Induction Generator

2014 ◽  
Vol 960-961 ◽  
pp. 580-585
Author(s):  
Qiang Yu ◽  
Can Ping Yu ◽  
Hua Dong Sun ◽  
Jun Yi ◽  
Xu Zhi Luo
Keyword(s):  
Power System ◽  
Synchronous Generator ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Transient Characteristics ◽  
Wind Generators ◽  
System A ◽  
Operational Characteristics ◽  
Doubly Fed ◽  
Definition Of

Doubly-fed induction generator (DFIG) wind turbine has become a mainstream machine of wind generators in China. As the different operational characteristics between the DFIG and synchronous generator (SG), the large amount of DFIG-based wind generators installed in the grid may bring a series of impacts on the dynamic behaviors of power system. In order to study the DFIG transient characteristics on the condition of the voltage dips happening in the power system, a definition of the DFIG power angle is given and the effects of the converters on the DFIG power angle are discussed. On this basis, the transient angle characteristic of the DFIG is derived. The DFIG transient characteristics are performed by Matlab/Simulink software, the simulation results demonstrate that the DFIG has the resemble power angle characteristic of SG and prove the effectiveness of the derivation process, which lay a foundation for the study on the interactions between the DFIG and power system.

scholarly journals Modeling and Fuzzy Logic Control of the Doubly Fed Induction Generator used in Wind Power and Application to the Industrial Context with an Equivalent Photovoltaic System

2020 ◽  
Vol 9 (3) ◽  
pp. 3144-3150
Keyword(s):  
Electrical Power ◽  
Economic Cost ◽  
Photovoltaic System ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Proportional Integral ◽  
Logic Control ◽  
Squirrel Cage ◽  
Doubly Fed ◽  
The Comparative Study

In this paper, we are first going to present two different renewable energy systems based on wind and photovoltaic energy in order to provide an industrial site with electrical power. This study will continue with the sizing of these systems and the assessment of their performances through a technical and economic comparison. The results show that wind energy have a low impact and a reasonable economic cost. In the second part of this paper, we are going to focus on the modelling of a Doubly Fed Induction Generator (DFIG) used in wind systems in order to compare its performances to a squirrel cage generator (SCG). Final part has been attempted to presents the comparative study of Proportional Integral (PI), Proportional Integral Derivative (PID) and fuzzy controllers. The simulations of the operation of the different generators are done with MATLAB/SIMULINK and our results are presented and analysed at the end of this work

scholarly journals Oscillation Damping for Wind Energy Conversion System with Doubly Fed Induction Generator Association with Synchronous Generator

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5067
Author(s):  
Farag K. Abo-Elyousr ◽  
Hossam S. Abbas ◽  
Ali M. Yousef ◽  
Nguyen Vu Quynh ◽  
Ziad M. Ali ◽  
...  
Keyword(s):  
Power System ◽  
Energy Conversion ◽  
Synchronous Generator ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Rotor Speed ◽  
Linear Quadratic ◽  
Interconnected Power System ◽  
Wind Energy Conversion ◽  
Doubly Fed

The main purpose of this paper is to enhance the operation of renewable wind energy conversion (WEC) systems connected to power systems. To achieve this, we consider a linear quadratic Gaussian (LQG) control approach for regulating the effects of a WEC system with doubly fed induction generator (DFIG) on the synchronous generator (SG) rotor speed of the interconnected power system. First, we present the mathematical formulation of the interconnected power system comprises a single synchronous generator and a wind turbine with DFIG connected to an infinite bus bar system through a transmission line. We consider that the system is operated under various loading conditions and parameters variation. Second, a frequency damping oscillation observer is designed via Kalman filtering together with an optimal linear quadratic regulator to mitigate the impacts of the WEC system on the SG rotor speed. The performance of the developed interconnected power system is simulated using a MATLAB/SIMULINK environment to verify the effectiveness of the developed controller. In comparison with previously reported results, the proposed approach can stabilize the interconnected power system within 1.28 s compared to 1.3 s without the DFIG.

Parameterization of a synchronous generator to represent a doubly fed induction generator with chopper protection for fault studies

Wind Energy ◽  
2011 ◽  
Vol 14 (1) ◽  
pp. 107-118 ◽  
Author(s):  
Jorge Martínez ◽  
Philip C. Kjaer ◽  
Pedro Rodriguez ◽  
Remus Teodorescu
Keyword(s):  
Synchronous Generator ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Doubly Fed

scholarly journals Slip Control of a Squirrel Cage Induction Generator Driven by an Electromagnetic Frequency Regulator to Achieve the Maximum Power Point Tracking

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2100 ◽  
Author(s):  
Thales Ramos ◽  
Manoel F. Medeiros Júnior ◽  
Ricardo Pinheiro ◽  
Arthur Medeiros
Keyword(s):  
Induction Machine ◽  
Synchronous Generator ◽  
Induction Generator ◽  
Secondary Source ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Squirrel Cage ◽  
Squirrel Cage Induction Generator ◽  
Power Point ◽  
Cage Rotor

A new topology was recently developed to drive generators, aiming to avoid power electronic devices directly connected to the grid, and making possible the hybridization of the wind power with other sources. The system is composed by an induction machine with rotor in squirrel cage, and a rotating armature endowed with a three-phase winding that may be fed by a secondary source. The previous purpose was to convert a variable velocity imposed by the wind turbine to the armature in a constant velocity to be developed by the cage rotor, driving a shaft of synchronous generator. This article proposes the use of an induction generator instead of a synchronous one in order to explore the maximum available wind energy (MPPT). The simulation results show that the proposed topology is viable and supports both variations in wind speed and disturbances in power grid.

Sign in / Sign up

Export Citation Format

Share Document