Studies on the use of conventional induction motors as self-excited induction generators

Murthy, S. Srinivasa; Singh, Bhim; Nagamani, C.; Satyanarayana, K.V.V.

doi:10.1109/60.9360

Cited by 129 publications

(32 citation statements)

References 6 publications

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“…[8] Use the Genetic Algorithm (GA) to predict the value of excitation capacitance required to maintain the terminal voltage under any loading condition. Murthy et al [11] have shown that excitation capacitance must be varied over a wide range to maintain the generator voltage constant. Capacitor Switching is cheap and simple solution to maintain terminal voltage constant.…”

Section: Introductionmentioning

confidence: 99%

Steady-state analysis and voltage control of Self-Excited Induction Generator (SEIG)

Biglari

Miraftabi

2012

2012 11th International Conference on Environment and Electrical Engineering

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Abstract-Self-Excited Induction Generators have become the prime choice for wind energy conversion in remote and rural areas due to many advantages over Grid Connected Induction Generators. However, their main drawback is poor voltage and frequency regulation. Steady state analysis for such machines is important to understand their behaviour under varying operating conditions.In this paper steady-state performance of SEIG (with general RL load) under varying operating speed, excitation capacitance and load is presented using a simple and fast nodal analysis and piecewise linearization of magnetization characteristics. Moreover, terminal voltage control of SEIG by means of capacitor switching is investigated. MATLAB is used to simulate the analysis and the conformity between simulation results and other research papers in this field validates the theoretical approach presented in this paper.

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Section: Introductionmentioning

confidence: 99%

Steady-state analysis and voltage control of Self-Excited Induction Generator (SEIG)

Biglari

Miraftabi

2012

2012 11th International Conference on Environment and Electrical Engineering

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“…Some works recently have been done on the development of these generators [2][3][4][5][6][7][8][9][10]. Brushless construction with squirrel-cage rotor, reduced size, absence of DC supply for excitation, reduced maintenance cost, and better transient performances are the main advantages of induction generators over the synchronous generators [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Stability of Terminal Voltage of the Self-Excited Induction Generator with Leading Load

Dzhendubaev¹

2006

Electric Power Components and Systems

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A general analysis to predict the steady-state and transient performances of an isolated self-excited induction generator feeding a balanced three-phase leading load is presented. The value of leading load power factor can be selected so that the terminal voltage is practically constant, regardless of the generator output power. For such power factor to be achieved, every load (such as an filament lamp, an induction motor, a heater, etc.) connected to a generator must be equipped with a power capacitor. This power capacitor is built into a load and, thus, becomes its component. The effect of the leading load and prime mover parameters on terminal voltage is shown for steady-state operation. Active power of small conventional induction motor in generating condition is found to be lower than in motorizing condition for rated values of current, voltage, and generated frequency. Also shown is the influence of line parameters on transient processes due to the sudden load change.Analysis has been carried out of transient processes that occur when leading load represented by an induction motor equipped with a power capacitor is being connected. Comparison of the predicted and the experimental results shows a good agreement.

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“…In this figure R1 and X1 the resistance and leakage reactance respectively of the stator, Rm and Xm are the loss resistance and the magnetizing reactance, and R2 and X2 the resistance and reactance of the rotor. I1 and Ir are the stator current and rotor current respectively [10][11][12][13]. …”

Section: F Mathematical Modelling Of Seigmentioning

confidence: 99%

Steady-State Analysis of Three-Phase Self-Excited Induction Generator for Stand-Alone Applications

Singh¹

2018

IJRASET

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Self-excited induction generator offers certain advantages over a conventional synchronous generator as a source of isolated power supply. Main advantages are reduced cost, less maintenance, self protection from short-circuit or overload condition, and brush less rotor. It is used as variable speed generator for different applications such as wind energy conversion, micro hydropower generation. Therefore, it is now a key interest to develop an efficient and viable Generator for harnessing the energy from renewable sources. To develop an efficient, viable, economic and controllable induction generator, we must know the steady-state performance of the generator. Using steady state equivalent circuit model excluding iron losses, steady state performance analysis has been done. Experimental investigations under steady state condition have been done in the laboratory. Keywords: Minimum capacitance, standalone SEIG, self-excited induction generator, remote areas, rural areas, steady state analysis, operating conditions. I.INTRODUCTION Electrical energy is the basic necessity of any country for its overall development. Fossil fuels (Coal, Oil, and Diesel) are the main sources of electrical energy (about 60% in our country). Fast depletion of fossil fuels results insecurity of availability of fossil fuels, subsequent increase in energy cost, the environmental pollution and above all the global warming. This has brought the worldwide attention in reducing the pollution and conservation of the limited conventional fuels by encouraging more and more use of the energy available from the non-conventional/renewable sources such as the wind, the biogas, the tidal waves and the small hydro power stations on the running canals and rivulets etc. The potential of the energy available from the small hydro and the wind sources seems to be quite promising to meet the future energy demands, especially in the remote and isolated areas. However, these systems will become more viable if their cost is reduced to the minimum. Therefore, the squirrel cage rotor induction generators are receiving much attention for such applications due to its low cost and robust construction[1-4]. The Self-Excited Induction Generators (SEIGs) are receiving increased attention from the utilities over the world to obtain the energy from renewable/non-conventional sources for remote and isolated areas. The main problems in the use of induction machine as a generator are related to the varying voltage and frequency, the loss of self-excitation, the overloading of the machine, the transient over voltages due to the capacitance switching or the load loss. But, the robust construction of induction machine specially squirrel cage type rotor, offers maintenance free operation and the least cost of the generating system. This has motivated to facilitate the use of the induction generator in isolated mode with suitable low cost control which could ensure the reliable supply of good quality. Also, such system for power generation could be made efficient and c...

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Studies on the use of conventional induction motors as self-excited induction generators

Cited by 129 publications

References 6 publications

Steady-state analysis and voltage control of Self-Excited Induction Generator (SEIG)

Steady-state analysis and voltage control of Self-Excited Induction Generator (SEIG)

Analysis of Stability of Terminal Voltage of the Self-Excited Induction Generator with Leading Load

Steady-State Analysis of Three-Phase Self-Excited Induction Generator for Stand-Alone Applications

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