Efficiency comparison of two possible grid connected small wind turbine systems

Arifujjaman, Md.; Iqbal, M. Tariq; Quaicoe, John E.

doi:10.1109/epec.2010.5697175

Cited by 4 publications

(13 citation statements)

References 2 publications

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“…The lifetime of the components are determined considering junction temperature as a co-variate [28]. The junction temperature, Tj of a semiconductor device can be calculated as [32].…”

Section: Power Electronics Interfacing Systemmentioning

confidence: 99%

“…where, P l , T a , R ja are the power loss of a component, the ambient temperature, and the junction resistance, respectively. Reliability model of a power conditioning system for a small (1.5 kW) wind energy conversion system is developed by considering power loss only at a rated wind speed operating condition [28]. However, it is to be noted that power losses in the semiconductor components vary according to the wind speed variation at the wind turbine input.…”

Section: Power Electronics Interfacing Systemmentioning

confidence: 99%

“…Moreover, these approaches determine available power only at the output of the WT rotor without considering the role of the other sub-systems. Reliability evaluation is carried out only for interfacing power electronics sub-system to compare performances of small (1.5kW) wind generation system is presented in [28]. Furthermore, such reliability assessment of the interfacing power electronics subsystem is carried out for a single operating point such as at the rated wind speed condition.…”

Section: Introductionmentioning

confidence: 99%

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Microgrid reliability evaluation considering the intermittency effect of renewable energy sources

Ahshan¹

2017

SGCE

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This paper presents the reliability evaluation of a microgrid system considering the intermittency effect of renewable energy sources such as wind in this study. One of the main objectives of constructing a microgrid system is to ensure reliable power supply to loads in the microgrid. In order to achieve this objective, it is essential to evaluate the reliability of power generation of the microgrid under various uncertainties. Because highly variable wind resources and different operating modes of the microgrid are the major factors to influence the generating capacity of the microgrid in this study. Reliability models of various subsystems of a 3-MW wind generation system are developed. The subsystems include wind turbine rotor, gearbox, generator, and interfacing power electronics system. The impact of stochastically varying wind speed to generate power by the wind turbine system is accounted in developing subsystems reliability model. A Microgrid System Reliability (MSR) model is then developed by integrating the reliability models of wind turbine systems with hydro and storage units in the study microgrid system using the system reliability concept. A Monte Carlo simulation technique is utilized to implement the developed reliability models of wind generation and microgrid systems in Matlab environment. The investigation reveals that maximizing the use of wind generation systems and storage units increases the reliability of power generation of the proposed microgrid system in different operating modes.

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“…The lifetime of the components are determined considering junction temperature as a co-variate [28]. The junction temperature, Tj of a semiconductor device can be calculated as [32].…”

Section: Power Electronics Interfacing Systemmentioning

confidence: 99%

Section: Power Electronics Interfacing Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microgrid reliability evaluation considering the intermittency effect of renewable energy sources

Ahshan¹

2017

SGCE

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“…It was shown earlier that a DFIG is more efficient than permanent magnet generators [10]. A DFIG is capable to control both active and reactive power independently.…”

Section: Introductionmentioning

confidence: 99%

Performance of wound rotor induction generators with the combination of input voltage and slip power control

Bakhsh

Shees

Asghar

2014

Russ. Electr. Engin.

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Input voltage control had been used for the improvement of power factor in grid connected wind power based induction generators. However, efficiency in this case is very poor and the control range is also limited. The conventional rotor resistance control had also been used for wind power generation but in this case too, the input power factor becomes very poor. In this paper, a new control method is being proposed where both input voltage and slip power control are combined to achieve better performance of wound rotor induction generators (WRIG) for wind power generation. For each operating point, an optimum input volt age is set and the slip power is controlled by rotor impedance such that the maximum efficiency is achieved. Both power factor and efficiency improve for a wide range of speed variation. Moreover, the reactive power demand remains nearly constant which is compensated by a fixed value capacitor whose optimum value is found through the simulation. Moreover, the capacitors being placed at the rotor side, the efficiency of the proposed controller improves further. This scheme is useful for low power wind energy conversion system (WECS) where the wind speed varies over wide range. The performance of the proposed system under various wind conditions is experimentally verified.

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“…Moreover, these approaches determine available power only at the output of the WT rotor without considering the role of the other subsystems. In [30], reliability evaluation is carried out only for interfacing power electronics subsystems in order to compare performances of small (1.5 kW) wind generation systems. Furthermore, such reliability assessment of the interfacing power electronics sub-system is performed for a single operating point such as the rated wind speed condition.…”

Section: Introductionmentioning

confidence: 99%

Microgrid System Reliability

Ahshan¹

2020

Reliability and Maintenance - An Overview of Cases

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This chapter presents the reliability evaluation of a microgrid system considering the intermittency effect of renewable energy sources such as wind. One of the main objectives of constructing a microgrid system is to ensure reliable power supply to loads in the microgrid. Therefore, it is essential to evaluate the reliability of power generation of the microgrid under various uncertainties. This is due to the stochastically varying wind speed and change in microgrid operational modes which are the major factors to influence the generating capacity of the individual generating unit in the microgrid. Reliability models of various subsystems of a 3-MW wind generation system are developed. The impact of stochastically varying wind speed to generate power by the wind turbine system is accounted in developing subsystem reliability model. A microgrid system reliability (MSR) model is developed by integrating the reliability models of wind turbine systems using the system reliability concept. A Monte Carlo simulation technique is utilized to implement the developed reliability models of wind generation and microgrid systems in a Matlab environment. The investigation reveals that maximizing the use of wind generation systems and storage units increases the reliability of power generation of the proposed microgrid system in different operating modes.

show abstract

Efficiency comparison of two possible grid connected small wind turbine systems

Cited by 4 publications

References 2 publications

Microgrid reliability evaluation considering the intermittency effect of renewable energy sources

Microgrid reliability evaluation considering the intermittency effect of renewable energy sources

Performance of wound rotor induction generators with the combination of input voltage and slip power control

Microgrid System Reliability

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