Parallel operation of three-phase self-excited induction generators with different numbers of poles

Al-Senaidi, Saleh; Alolah, A.I.; Alkanhal, Majeed A. S.

doi:10.1016/j.jestch.2021.04.007

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…Given that the value of the magnetising inductance Lm to be taken into account is the one corresponding to the linear zone of the no-load characteristic Lm(im), i.e. the initial value of Lm [24], [25].…”

Section: System Description and Modellingmentioning

confidence: 99%

Experimental determination of minimum capacitor for self-excitation of induction generators

Sibrahim,

Aissou,

Rouas

et al. 2024

IJPEDS

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This article addresses the issue related to determining the minimum capacitor required for the self-excitation of an induction generator. The determination of the minimum capacitance required for the self-excitation of a self-excited induction generator has already been the subject of several previous studies. It has been shown that the minimum capacitance depends on the rotation speed and the remanent magnetism. The study carried out in this paper shows that, in addition to the rotation speed and the remanent magnetism, there is a third parameter that has an influence on the self-excitation process, which is the acceleration or, in other words, the rotation speed ramp-up. In this paper, several experimental self-excitation tests for different values of the rotation speed ramp-up are carried out, leading to new characteristics of the minimum self-excitation capacitance as a function of the rotation speed. The results obtained from simulation and experimental studies prove the efficacy of the proposed approach.

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Section: System Description and Modellingmentioning

confidence: 99%

Experimental determination of minimum capacitor for self-excitation of induction generators

Sibrahim,

Aissou,

Rouas

et al. 2024

IJPEDS

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“…The magnitude of this terminal voltage is dependent on the saturation curve of a particular machine (i.e quality of the iron, core dimensions, overall geometry, coil windings). The saturation curve is often represented either by a polynomial or a nonlinear expression as given by ( 16) (Bassett and Potter, 1935, Simões and Farret, 2014, Al-Senaidi et al, 2021. As shown in Figure 2, excitation capacitance required is determined for a particular rotation in such a manner that the straight line of the capacitive reactance intercepts the saturation curve at the point of the desired rated voltage (𝑉 𝑡 ) (Debta & Mohanty, 2010).…”

Section: Magnetic Saturation and Voltage Build Up Characteristics In ...mentioning

confidence: 99%

Capacitively-excited single-phase asynchronous generator for autonomous applications

Sanusi¹,

Olatomiwa²,

Mohammed³

et al. 2022

Nig. J. Technol. Dev.

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The need to decentralize power generation and decarbonize the earth in order to have a sustainable global economy are the major reasons for the development of this paper. Considering the flaws of grid-connected power system, the autonomous system becomes a better alternative in rural and isolated areas. Analysis of stand-alone single-phase Asynchronous generator based on d-q model in a stationary reference frame is presented. Asynchronous generator does not have the capability to produce reactive power necessary for excitation and this must be provided by external means. Capacitive method has been considered in this paper due to its simplicity and its economic viability. The effects of magnetic saturation in the airgap has been considered by using the nonlinear relationship between the magnetizing inductance and the magnetizing current of the machine. Under this approach, the mutual inductance varies continuously. The results have shown that steady state condition of the generated voltage is not fixed but depends on the suitable combination of excitation capacitance and the rotor speed.

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“…For a standard operating IG to operate in off-grid mode and as a generator, it must satisfy two states: (i) the capacitor bank provides the required reactive power and (ii) the rotor speed of the IG is above the synchronous speed [14,15]. The second condition is the same for both on-and off-grid operations.…”

Section: Introductionmentioning

confidence: 99%

Operating the Induction Motor as a Generator Mode by Supplying DC Voltage and Investigation of the End Voltage Depending on the Excitation Current and RPM

Özçelik

2023

International Journal of Energy Research

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Asynchronous or induction machines are among the leading devices in the electrical industry. They are well suited for motor and production applications with power ratings from a few kilowatts to megawatts. In addition, their use in renewable energy systems, especially in wind conversion systems, is increasing daily due to their advantages, such as low cost, brushless, and robust structure. In this work, the operation of a three-phase asynchronous motor with a winding rotor as an alternator, the variation of the voltage produced depending on the excitation current by keeping the number of revolutions constant, and the interpretation of the voltage produced according to the number of revolutions by keeping the excitation current constant have been investigated. The variation of the terminal voltage in ohmic, inductive, and capacitive loads has been experimentally investigated by observing the source voltage providing the rotational speed and excitation current constant.

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Parallel operation of three-phase self-excited induction generators with different numbers of poles

Cited by 5 publications

References 24 publications

Experimental determination of minimum capacitor for self-excitation of induction generators

Experimental determination of minimum capacitor for self-excitation of induction generators

Capacitively-excited single-phase asynchronous generator for autonomous applications

Operating the Induction Motor as a Generator Mode by Supplying DC Voltage and Investigation of the End Voltage Depending on the Excitation Current and RPM

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