Voltage and frequency regulation for autonomous induction generators in small wind power plant

Ahmadi, Al

doi:10.21833/ijaas.2019.01.013

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…Its main role is keeping the DPAG in the stable part of torque-speed characteristic, and this is achieved by varying the slip energy to feed the resistive load, where the rotor energy changes according to speed variation. The main disadvantage of this configuration is its bad efficiency especially when the slip energy increases to an important value (Al Ahmadi et al, 2019;Singh et al, 2010). Multiphase induction machine drives are mainly related to the high-power and/or high-current applications such as for example in electric ship propulsion, in locomotive traction, in aerospace applications and electric/ hybrid vehicles (Singh et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The major drawbacks in the use of self-exited double wound asynchronous generator, (DWAG) are the poor voltage and frequency regulations under prime mover speed and load perturbations (Parsa, 2005;Amimeur et al, 2012). The generated terminal voltage and the output frequency, depend on the excitation capacitance, the dual three-phase induction generator parameters, the electrical passive load and the prime mover speed (Levy 1986;Al Ahmadi et al, 2019;Yazdani et al, 2009;Marwa et al, 2013;Khlifi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Analysis of an off-grid self-excited dual wound asynchronous generator for wind power generation

Khlifi¹

2019

Int. j. adv. appl. sci.

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The present paper deals with the modeling and control of Wind Energy Conversion System WECS based on an isolated self-excited mode of double wound asynchronous using an FZEO algorithm. We develop the steady-state model of a double wound self-excited asynchronous generator for standalone renewable generation dispenses with the segregating real and imaginary components of the complex impedance of the induction generator. Its main objective is to study the sensitivity of the stator mutual leakage inductance on the modeling of such generator, when we used three versions of dual star induction generator electric models. Steady state performances and characteristics of different configurations are clearly examined and compared. Experimental results of the proposed dual three-phase asynchronous generator drive system show the good performance of the analysis system strategy for steady-state conditions. Detailed simulation and experimental investigation about various performances including loading and unloading characteristic of self-excited dual stator asynchronous generator are also presented in the paper.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of an off-grid self-excited dual wound asynchronous generator for wind power generation

Khlifi¹

2019

Int. j. adv. appl. sci.

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“…*The effects of saturation of the main flux path on the performance of electrical machines have been discussed in very many papers in the literature (Marwa et al, 2014;Khlifi et al, 2016) but there are no generalized analytical treatments of these effects. As with the theory of electrical machines before the advent of Kron's generalized theory authors tend to consider the effects of saturation in a specific machine type, and crucially the effects of intersaturation, sometimes called cross-saturation do not appear to have been included in any general analysis (Al Ahmadi et al, 2019;Singh et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

A nonlinear saturation model of synchronous machines with account cross saturation

Saidi¹

2019

Int. j. adv. appl. sci.

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This paper developed an enhanced saturation model for synchronous machines based on simulation and experimental evaluation. The effect of taking account of cross-saturation is demonstrated. Local saturation factors are defined so as to adjust the flux-density distribution. The method of saturation modelling of dumper synchronous machine with and without cross-saturation is identified. Examples of numerical simulation are given to verify the model and its applications. Through experiments, it is shown that, by using the relationship between magnetizing current and flux as modelled in this paper, the nonlinear behavior of the synchronous machine is quite accurately estimated. Furthermore, the new model is compared with a classical model that neglects mutual saturation effects between a quadrature and direct axis windings.

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“…R.H. Nelson [9] carried out simulation on three types of six-phase machine using a voltage source inverter where the dual stators are shifted by 0, 30 and 60 electrical degrees and mutual leakage inductances are neglected. Nevertheless, there have been studies where the mutual leakage inductance has been neglected [2,5,[7][8][9][10][11][12][13].…”

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confidence: 99%

Performance Analysis of Six-Phase Induction Machine-Multilevel Inverter With Arbitrary Displacement

Slimene

2020

Electrical Engineering &Amp; Electromechanics

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Purpose. This paper presents a d-q model of six-phase induction machine supplied by a two identical voltage source inverterssuitable for analysis the dynamic steady under balanced operating condition. In the analytical model, the effects of common mutual leakage inductance between the dual stator have been included. The model has been developed in general reference frame taking into account of 0°, 30° and 60° displacements between two stator winding sets. The main purpose of this work is to conduct a quantitative study to show the advantage of supplying the six-phase induction machine by a multilevel inverter. The voltage and current total harmonic distortion and the torque ripple rate are the main targets. This paper is organized into four sections. After the introduction, the second section includes development of mathematical models concerning the six-phase induction machine. The third presents the effect of displacements of 0°, 30 ° and 60 ° between two stator-winding sets, and a comparison of three cases. After that, we present a comparative study between two, three, five and seven inverter levels when feeding the six-phase induction machine. For this purpose, simulations were carried out to obtain phase currents and torque ripple rates in steady state. References 13, tables 2, figures 13. Key words: six phase induction machine, multiphase electric drives, multiphase machines performance, displacements, multi-level inverter. Цель. В статье представлена d-q модель шестифазной асинхронной машины, снабженной двумя идентичными инверторами источника напряжения, пригодными для анализа динамической устойчивости при сбалансированных условиях работы. В аналитическую модель включено влияние общей взаимной индуктивности рассеяния между двойным статором. Модель разработана в общей системе отсчета с учетом смещений на0°, 30° и 60° между двумя наборами обмоток статора. Основная цель данной работы -провести количественное исследование, чтобы показать преимущество питания шестифазной асинхронной машины многоуровневым инвертором. Общее гармоническое искажение напряжения, тока и пульсация крутящего момента являются основными целями исследования. Статья состоит из четырех разделов. После введения, второй раздел содержит разработку математических моделей применительно к шестифазной асинхронной машине. В третьем разделе представлено влияние смещения на 0°, 30° и 60° между двумя наборами обмоток статора, а также сравнение трех указанных случаев. После этого представлено сравнительное исследование двух, трех, пяти и семи уровней инвертора при питании шестифазной асинхронной машины. Для этой цели проведено моделирование с целью получения фазных токов и пульсаций крутящего момента в стационарном состоянии. Библ. 13, табл. 2, рис. 13. Ключевые слова: шестифазная асинхронная машина, многофазные электроприводы, производительность многофазных машин, смещения, многоуровневый инвертор.

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Voltage and frequency regulation for autonomous induction generators in small wind power plant

Cited by 7 publications

References 14 publications

Analysis of an off-grid self-excited dual wound asynchronous generator for wind power generation

Analysis of an off-grid self-excited dual wound asynchronous generator for wind power generation

A nonlinear saturation model of synchronous machines with account cross saturation

Performance Analysis of Six-Phase Induction Machine-Multilevel Inverter With Arbitrary Displacement

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