Stand-alone wind power system operating with a specific storage structure

Druga, M.; Nichita, Cristian; Barakat, Georges; Ceangă, Emil

doi:10.24084/repqj07.332

Cited by 7 publications

(8 citation statements)

References 10 publications

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“…In the mathematical expressions (5), we consider: Vdc : The DC bus voltage [V]; ω: The electrical pulsation of the network [rad/s]; Umax : The peak voltage; S: The apparent power [VA]. First of all, the turbine is controlled in MPPT (Maximum Power Point Tracking Point) mode by adjusting the angular speed of the PMSG to its optimal value ΩWT_opt expressed by formula (1) [26]. For wind speeds greater than the nominal speed of the turbine, the pitch control mode is activated so that the power extracted by the turbine is limited to the nominal power of the PMSG (Ptr_nom), by varying the pitch angle (β) [27].…”

Section: Synthesis the Control Associated With Each Wt-off Subsystemmentioning

confidence: 99%

Offshore Wind Energy Integration using Photovoltaic Systems and Batteries as Smoothing Devices

Maloum¹,

Bendahmane²,

Nichita³

et al. 2021

EEA

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Currently, producing electrical energy is among the major concerns, which will continue to grow in the future. This is due, on the one hand, to the depletion and high conventional energy sources costs. On the other hand, because of the pollution they cause to the environment, hence the need to produce electrical energy from renewable and clean sources, such as wind, photovoltaic and tidal systems. The exploitation of the sea wind by offshore wind turbines is interesting and promising. In this context, this work aims to propose a new approach to hybrid offshore wind/photovoltaic/battery systems energy management. The power produced by the photovoltaic/battery will be used to compensate for the lack of power presented by offshore wind production in relation to the demand of the grid, as offshore wind is taken as a main source in this study. To achieve the set objective, an energy management algorithm is developed and implemented. This algorithm makes it possible to involve photovoltaics in the first place, in a progressive way according to the power deficit presented by the offshore park and the available sunshine. As it also aims to manage the charge and discharge of the battery bench last if the power supplied by the offshore wind farm alone or by offshore wind/photovoltaic does not match the demand. To verify the efficiency of this management algorithm, simulations of the offshore wind/photovoltaic/battery system were carried out under matlab/simpowers. This system is divided into several sub-systems: wind, photovoltaic and battery bank. Each of them is equipped with different specific infrastructure, as well as adequate control systems for proper operation. All subsystems are grouped together at a common connection point, where energy management is carried out prior to connection to the distribution network. The results obtained validated the main approaches of the proposed method allowing a reliable stabilization of the power level to the common connection point at the reference power that must be injected into the distribution network.

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Section: Synthesis the Control Associated With Each Wt-off Subsystemmentioning

confidence: 99%

Offshore Wind Energy Integration using Photovoltaic Systems and Batteries as Smoothing Devices

Maloum¹,

Bendahmane²,

Nichita³

et al. 2021

EEA

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“…The parameters of the model are determined assuming that at the operation point where the stack current is maximum and the state-of-charge (SOC) 20% the power losses of the VRB are of 21%. Therefore, at this operation point the overall efficiency is supposed to be 79% [4].…”

Section: Battery System Modelingmentioning

confidence: 99%

“…The proposed model has the following characteristics: (i) the SOC is modelled as a dynamically updated variable;(ii) the stack voltage is modelled as a controlled voltage source, and the power flowing through this source will impact the SOC;(iii) the variable pump loss model, as a controlled current source, is controlled by the pump loss current I pump that is related to the SOC and the current I stack flowing through the battery stack [4,5]. VRB power loss includes two parts: (1) one is from the equivalent internal resistances R reactor and R resistive and (2) one is parasitic loss due to the parasitic resistance,R fixed and the pump loss.…”

Section: Fig 2:equivalent Circuit Of the Vrbmentioning

confidence: 99%

“…The equivalent circuit model based simulations are employed to study the charge-discharge characteristics of VRB [4]. The parameters are listed as: rated power P N = 270 kW, rated capacity E N = 405 kW h, initial voltage value V N =810 V, the cell number n = 648, R reactor = 0.174 ῼ, R resistive = 0.116 ῼ, R fixed = 60.5 ῼ.…”

Section: Fig 2:equivalent Circuit Of the Vrbmentioning

confidence: 99%

See 1 more Smart Citation

A Hybrid Renewable Energy Distributed Generation System with Vanadium Redox Battery (VRB)

.R¹,

Dass²,

D.Rajasindhu³

2014

IJAREEIE

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Renewable technologies are matured; hybrid renewable energy system is promising to replace conventional fossil fuel distributed power generation. Renewable energy sources are inexhaustible and are renewed by nature itself. Due to ever increasing energy consumption, rising public awareness of environmental protection, and steady progress in power deregulation, alternative (i.e., renewable and fuel cell based) distributed generation (DG) systems have attracted increased interest. Wind and photovoltaic (PV) power generation are two of the most promising renewable energy technologies. Renewable energy sources are inexhaustible and are renewed by nature itself. This paper focuses on a photovoltaic/wind based hybrid power system. This system has three different sources namely solar, wind, and battery power to produce a continuous power supply. The available solar and wind output is boosted to the required level and connected to a common DC bus. The battery for this system is Vanadium Redox flow Battery (VRB). The performance of the energy storage system can be improved by VRB. This paper proposed the hybrid renewable energy system with VRB and the simulation results of VRB. The MPPT is implemented using Perturb and Observe algorithm to obtain the maximum power point. This DC is suitably converted into an AC by a PWM inverter to supply an AC load. In the absence of both wind and the solar output the load is connected through a battery backup source to supply power to the load. KEYWORDS:Hybrid system, Distributed generation, Photovoltaic/Wind, Vanadium Redox flow Battery. I.INTRODUCTIONEnergy is essential to everyone's life no matter when and where they are. This is especially true in this new century, where people keep pursuing higher quality of life. Among different types of energy, electric energy is one of the most important that people need every day. Since natural energy sources are finite and produce pollution, the applications of renewable energy sources in the form of clean technology could be the right solution to solve the energy crisis in the recent century. In order to meet ever increasing demand for conventional energy sources, applications with clean renewable energy technologies such as photovoltaic (PV) energy and wind energy have been vigorously developed in recent years. Hybrid wind-PV system has higher availability to deliver continuous power than either individual source. Distributed generation technologies can provide customers with the energy solutions that are more cost effective, more environments friendly or provide higher power quality or reliability than conventional solutions [1,2]. In our paper a double input and single output power converter is developed for combined Wind-PV power generating systems. And also these circuits have a path for backup energy banks.Distributed generation (DG) can be defined as a source of small electric power connected to a distribution network or at a customer site, representing an innovative and efficient way to both generate and deliver electricity....

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“…These include systems operating with battery storage [1][2][3]. Studies considering hydrogen generation have focused on the supervisory control of the system [4], or the control in conjunction with a battery system [5].…”

Section: Introductionmentioning

confidence: 99%

Control and simulation of a stand-alone wind-hydrogen generation system

Carr¹,

Zhang²,

Thanapalan³

et al. 2013

REPQJ

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Abstract. The potential to produce hydrogen from renewable resources is of considerable interest due to fears over man-made climate change and resource depletion. Hydrogen produced from renewable resources can be used to generate electricity through a fuel cell, or for other uses in a hydrogen economy. There are a number of potential system configurations for hydrogen production from electrolysis including grid connected and standalone. In remote locations, stand-alone configurations are of interest, and may prove more economically viable than grid connected systems. In this paper a standalone wind -hydrogen generation system is designed and proposed to take advantage of an electrolyser capable of operating at very low power levels. A dynamic model of the system is presented, along with a maximum power point (MPPT) control algorithm of the system. The potential yield of such a wind-hydrogen stand-alone system located at the University of Glamorgan's Hydrogen Centre is investigated using wind speed data collected at the site and the performance of the system under variable wind conditions determined.

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Stand-alone wind power system operating with a specific storage structure

Cited by 7 publications

References 10 publications

Offshore Wind Energy Integration using Photovoltaic Systems and Batteries as Smoothing Devices

Offshore Wind Energy Integration using Photovoltaic Systems and Batteries as Smoothing Devices

A Hybrid Renewable Energy Distributed Generation System with Vanadium Redox Battery (VRB)

Control and simulation of a stand-alone wind-hydrogen generation system

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