Analysis and control of wind-driven self-excited induction generators connected to the grid through power converters

Gounden, N. Ammasai; Rakesh, Namani; Kumar, S. Senthil; Kumaresan, N.

doi:10.1007/s11708-012-0208-8

Cited by 14 publications

(7 citation statements)

References 26 publications

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“…After computing a and X m , other performance quantities of SEIG are evaluated using the steady‐state equivalent circuit. Ammasaigounden et al and Kumaresan et al have simplified the analysis by arriving at quadratic equations in rotor speed and magnetising reactance, respectively, but the coefficients of the three terms are still lengthy [17, 26]. It should be noted that, even though the generated frequency of SEIG predominantly depends on the rotational speed of the generator, it also depends on the resistance and reactance parameters of the generator and load.…”

Section: Introductionmentioning

confidence: 99%

Simplified methods for the analysis of self‐excited induction generators

Arthishri

Anusha²,

Kumaresan

et al. 2017

IET Electric Power Applications

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In this study, two simple methods for the steady‐state analysis of self‐excited induction generators (SEIGs) are proposed. These methods neither require lengthy mathematical derivations nor any advanced optimisation techniques to solve the equivalent circuit of SEIGs. First method involves a simple linear search algorithm and the second method employs a binary search algorithm to find the operating frequency at any given rotor speed, leading to the performance predetermination of SEIGs. To start the search techniques, a systematic approach has been formulated for fixing the boundary values required for the unknown pu frequency. The efficacy of the proposed methods has been demonstrated by presenting the predetermined performance characteristics of a three‐phase, 230 V, four‐pole, 50 Hz SEIG. The same SEIG was also tested in the laboratory using a DC motor as the prime mover. The closeness observed between the predetermined values and the experimental results further confirms the validity of the search algorithms. It has also been shown that the proposed methods can be extended with the same simplicity, for carrying out the performance predetermination of the short‐shunt configuration of SEIGs, used for obtaining improved voltage regulation with lagging power factor loads.

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Section: Introductionmentioning

confidence: 99%

Simplified methods for the analysis of self‐excited induction generators

Arthishri

Anusha²,

Kumaresan

et al. 2017

IET Electric Power Applications

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show abstract

“…It is known that the operating slip and hence rotational speed of the induction generator directly feeding power to the grid will have a very small variation from no load to full load [13,14]. However, for extracting the maximum power (MP) available in the wind by operating the wind turbine with optimum power coefficient, this rotational speed should be allowed to vary widely.…”

Section: Introductionmentioning

confidence: 99%

“…However, for extracting the maximum power (MP) available in the wind by operating the wind turbine with optimum power coefficient, this rotational speed should be allowed to vary widely. For achieving this, the machine has been operated in self-excited mode with capacitors connected at the stator terminals [13][14][15][16][17]. Then, suitable power converter needs to be interfaced between the generator terminals and ac grid.…”

Section: Introductionmentioning

confidence: 99%

“…Then, suitable power converter needs to be interfaced between the generator terminals and ac grid. Various control strategies have also been proposed in the literature for controlling these power converters for extracting MP available in the wind and feed to the ac grid [13][14][15][16][17]. Fast and exact detection of phase and frequency of grid voltage/current is needed to control the power converters in wind-generator systems [18].…”

Section: Introductionmentioning

confidence: 99%

“…A smoothing inductor is connected in between the output side of semiconverter and dc microgrid to have the continuous dc grid current. In the case of SEIG, the output voltage and frequency vary with the driving speed and load [5][6][7][8][9][10][11][12][13][14]. For the present system, this variable voltage and variable frequency (VVVF) output from SEIG is fed to the three-phase semi-converter.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wind-driven SEIG supplying DC microgrid through a single-stage power converter

Nayanar

Kumaresan

Gounden

2016

Engineering Science and Technology, an International Journal

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a b s t r a c tNowadays, there is an increased emphasis on utilizing the renewable energy sources and selection of suitable power converters for supplying dc microgrid. Among the various renewable energy sources, wind energy stands first in terms of installed capacity. So, an attempt is made in this paper for supplying dc microgrid utilizing wind energy. A self-excited induction generator has been used in the proposed wind energy conversion system (WECS). A single-stage power converter, namely, semi-converter is connected between the SEIG and dc grid terminals for closed-loop control of the proposed system. A perturb and observe (P&O) based maximum power point tracking (MPPT) algorithm has been developed and implemented using a dsPIC30F4011 digital controller. In this MPPT algorithm, the firing angle of the converter is adjusted by continuously monitoring the dc grid current for a given wind velocity. For analyzing the proposed system, a MATLAB/Simulink model has been developed by selecting the various components starting from wind-turbine model to the power converter supplying dc microgrid. Successful working of the proposed WECS has also been shown through experimental results obtained on a prototype model developed in the laboratory.

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A Look-up Table-Based Maximum Power Point Tracking for WECS

Varshini

2017

Advances in Intelligent Systems and Computing

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Analysis and control of wind-driven self-excited induction generators connected to the grid through power converters

Cited by 14 publications

References 26 publications

Simplified methods for the analysis of self‐excited induction generators

Simplified methods for the analysis of self‐excited induction generators

Wind-driven SEIG supplying DC microgrid through a single-stage power converter

A Look-up Table-Based Maximum Power Point Tracking for WECS

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