Self-excited induction generator research—a survey

Further information on publisher's website:http://dx.doi.org/10. 1016/j.enpol.2013.12.046 Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Energy policy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be re ected in this document. Changes may have been made to this work since it was submitted for publication. A de nitive version was subsequently published in Energy policy, 68, 2014, 10.1016/j.enpol.2013.12.046 Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Department of Geography, Durham University, Durham, DH1 3TE AbstractResearch around micro-hydro power is focused on technical aspects with limited understanding of the social organisation and environmental implications. We examine the ways in which microhydro is engaged by people and organisations as a means of contributing to the UK's policy ambition for renewable energy. We bring to the fore the way in which expertise is used and contested. A web based review of micro-hydro schemes in the UK was undertaken and a detailed evaluation of two schemes in the North of England was conducted to determine how expertise and contestation figures in community schemes. Results demonstrate a rapid expansion of micro-hydro in the UK. Ownership/control is highly 'community based'. Until now research around micro-hydro has been dominated by technical approaches with schemes defined in terms of hardware. We propose a third dimension to Walker and Cass's (2007) classification of renewable energy developments: the environmental dimension. We suggest this dimension of micro-hydro is critical, both in terms of the extent to which resources can be realised but also the ways in which it might attract controversy, in particular around how expertise is used and valued.

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“…Singh 2004) and how to assess potential sites where schemes may be located (e.g. Larentis et al, 2010;Cyr et al, 2011;Punys et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Micro-hydro power in the UK: The role of communities in an emerging energy resource

2014

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“…(4) is the result of solutions of (1). Similarly for other equations also Therefore, by summing the voltages of two different coils, one output phase is created.…”

Section: International Journal For Research In Applied Science and Engimentioning

confidence: 99%

“…The calculus of the six-phase smaller towers may also lead to the depletion of magnetic fields and electromagnetic interference [11]. The research on multiphase generators has latterly started and only a small number of referrals are available [1]- [7]. The work on multiphase power generation has investigated asymmetrical six-phase (two sets of stator windings with 30 o phase displacement)…”

Section: Introductionmentioning

confidence: 99%

“…Multiphase systems are advantages compared to three-phase systems have brought relevant to researcher interest. The applicability of multiphase systems is enquired into in electric power generation [1]- [7], transmission [8]- [14], utilization [15]- [32]. The research on six phase transmission systems was proposed due to increasing cost of right-of-way for transmission corridors, environmental issues, and different severe licensing laws.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Three-Phase to Nine-Phase Transformation Using a Special Transformer Connection

Poorna¹

2017

IJRASET

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Multiphase (more than three-phase) electric drive system is the priority of an important research in the last decade. Three-phase supply is available from the grid, however for many industrial applications multiphase supply is necessary. In the multiphase power transmission and multiphase rectifier systems, the number of phases investigated is a multiple of three. This paper proposes a technique to obtain nine-phase output from three-phase supply system using special transformer connections. The primary windings of the transformer connected in star input and secondary side of the transformer connected in star output. The output phases with requisite phase angle of 40 0 between each phase is obtained using appropriate turns ratios. The connection scheme is designed and simulated in MATLAB/Simulink environment. From the simulation results, it is observed that, a pure nine-phase sine-wave of fixed voltage/current and frequency is obtained.

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“…In isolated applications, an induction generator operates with three AC capacitors connected to the stator terminals, or with a power converter and a single dc capacitor [5]. Once an induction generator is excited, the capacitor maintains the excitation.…”

Section: Introductionmentioning

confidence: 99%

A Stand-Alone Induction Generator with Improved Stator Flux Oriented Control

Vukadinović¹,

Bašić²

2011

Journal of Electrical Engineering

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This paper presents an improved stator flux oriented (SFO) control system for a stand-alone induction generator. The induction generator supplies a variable resistive dc load. In order to provide an essentially constant terminal voltage, the product of the rotor speed and the stator flux reference should remain constant. However, in this case the control system is not able to function properly at different loads and dc-link voltages. In this paper, we introduce a new algorithm in which this product is constant at certain dc-load and dc-link voltage references. The dependence of the stator flux reference on the dc load and dc voltage reference is mapped using an artificial neural network (ANN). We also present an analysis of the efficiency of the SFO control system, as well as its performance during transients, over a wide range of both dc-link voltage references and loads. The validity of the proposed approach is verified by realistic simulation in a Matlab-Simulink environment.

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Self-excited induction generator research—a survey

Cited by 207 publications

References 69 publications

Micro-hydro power in the UK: The role of communities in an emerging energy resource

Micro-hydro power in the UK: The role of communities in an emerging energy resource

A Novel Three-Phase to Nine-Phase Transformation Using a Special Transformer Connection

A Stand-Alone Induction Generator with Improved Stator Flux Oriented Control

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