Currently, wind power is the fastest-growing means of electricity generation in the world. To obtain the maximum efficiency from the wind energy conversion system, it is important that the control strategy design is carried out in the best possible way. In fact, besides regulating the frequency and output voltage of the electrical signal, these strategies should also extract energy from wind power at the maximum level of efficiency. With advances in micro-controllers and electronic components, the design and implementation of efficient controllers are steadily improving. This paper presents a maximum power point tracking controller scheme for a small wind energy conversion system with a variable speed permanent magnet synchronous generator. With the controller, the system extracts optimum possible power from the wind speed reaching the wind turbine and feeds it to the grid at constant voltage and frequency based on the AC–DC–AC conversion system. A MATLAB/SimPowerSystems environment was used to carry out the simulations of the system. Simulation results were analyzed under variable wind speed and load conditions, exhibiting the performance of the proposed controller. It was observed that the controllers can extract maximum power and regulate the voltage and frequency under such variable conditions. Extensive results are included in the paper.
This paper presents analysis of impact of synchronous machine based distributed generation (DG) in distribution networks at various penetration levels. Higher DG penetration level raises important issues about distribution system operation. Therefore, new techniques are needed to determine the maximum amount of DG that may be installed without requiring major changes in the existing electric power system. In this paper, DG is placed at the terminal points of the lateral one at a time and both real and reactive power is injected at power factor ranging from unity to zero. Limiting factor for maximum penetration primarily taken is load bus voltage at upper voltage limit of 1.05 pu. Variation in substation voltage is taken as another important constraint. System under consideration for studies is the radial distribution network originating from Chaumala Substation that is situated in Kailali district of Nepal. This paper reveals that maximum allowable voltage rise perspective is recommendable if substation voltage is regulated at 1.05 pu but if substation voltage is kept at 1.00 pu, highly utopist scenario of penetration occurs. So, conductor ampacity or line loading perspective shall be suitable. Further, if DG is injected taking substation voltage at 1.05pu, there is a chance of under voltage at bus that is situated at the end of the critical branch. On contrary, if substation voltage is taken to be 1.00pu, voltage dip is severe at the bus situated very close to substation.Lastly, if the DG is placed closer to the substation, its penetration level should be increased and vice versa.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.