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A single-phase induction motor operating as a self-excited induction generator

100%

Leicht A. , Makowski K.

tom Vol. 62, nr 3

361--373

The purpose of the paper is the investigation of possibility of utilization of a single-phase induction machine, designed and normally operating as a single-phase capacitor induction motor, as a self-excited single-phase induction generator, which can be used to generate electrical energy from non-conventional energy sources. The paper presents dq model of the self-excited single-phase induction generator for dynamic characteristics simulation and steady-state model based on double revolving field theory with two phase symmetrical components – a forward and backward revolving field for performance of the generator under resistive load. Excitation and load characteristics obtained by simulation showed considerable influence of method of capacitor configuration in the load stator winding on terminal voltage, current and output power of the generator under load. An specific construction of the stator windings together with capacitor requirements to obtain nominal output power at desired self-regulating terminal voltage over the operating range will be the aim of further research.

Steady-state investigation of the single-phase capacitor induction motor

86%

Makowski K. , Wilk M.

tom R. 88, nr 2

180-183

The paper presents steady-state study of the single-phase capacitor induction motor by of 2D field-circuit model and by an actual motor laboratory testing. Developed the field-circuit model was implemented for simulation using Flux2D software package. The investigation of the motor was conducted for steady-state performance with no-load and locked-rotor tests. Computed steady-state characteristics were compared with measured ones to confirm correctness of the simulation model.

Artykuł przedstawia badania stanu ustalonego pracy jednofazowego silnika indukcyjnego z pomocniczym uzwojeniem kondensatorowym za pomocą dwuwymiarowego modelu polowo-obwodowego oraz pomiarów laboratoryjnych rzeczywistego silnika. Model polowoobwodowy silnika opracowano przy wykorzystaniu pakietu Flux2D. Badania silnika przeprowadzono w stanie pracy ustalonej pod obciążeniem, biegu jałowym oraz przy zahamowanym wirniku. Obliczone charakterystyki w stanie ustalonym porównano z wynikami pomiarowymi dla sprawdzenia poprawności przyjętego modelu polowo-obwodowego.

Experimental verification of field-circuit model of a single-phase capacitor induction motor

72%

Makowski K. , Wilk M. J.

Przegląd Elektrotechniczny

2012

tom R. 88, nr 7b

115-118

These The paper presents experimental verification of the 2D field-circuit model of the single-phase capacitor induction motor. Developed the field-circuit model was implemented for simulation using Flux2D software package. The verification of the 2D field-circuit model was conducted for starting of the motor with no-load, steady-state performance and at no-load and locked-rotor tests. Computed dynamic and steady-state characteristics were compared with measured ones to confirm correctness of the simulation model. The model is useful for study the effect of parameters of the motor on starting and running performance at desired load.

Artykuł przedstawia weryfikacje eksperymentalną dwuwymiarowego modelu polowo-obwodowego jednofazowego silnika indukcyjnego z pomocniczym uzwojeniem kondensatorowym. Opracowany model obliczeniowy zaimplementowano w środowisku Flux2D. Weryfikację przeprowadzono dla rozruchu silnika bez obciążenia, stanu ustalonego pracy. W celu oceny poprawności modelu porównano charakterystyki obliczone z pomierzonymi. Model może być przydatny do badań wpływu parametrów na właściwości rozruchowe oraz pracę znamionową badanego silnika.

Influence of mechanical and electromagnetic phenomena on electric motor vibrations in different power supply options

58%

Wróbel M. , Barczewski R. , Jakubek B. , Rukat W.

tom Vol. 31, nr 1

art. no. 2020102

Results of research about influence of mechanical and electromagnetic phenomena on electric motor vibration in different supply options has been shown in this paper. Three different supply options have been taken under consideration: typical star connection, single-phase connection with work capacitor and connection through an inverter. Vibration signals recorded on electric motor end shield and frame has been digitally processed using Multi-Synchronous Averaging (MSA). This technique allowed to decompose total vibration signal into signals associated with mechanical and electromagnetic phenomena occurring in electric motor. The comparison of rms values and spectra shapes of total and decomposed vibration signals has been made. Energy shares of previously mentioned phenomena in vibration signal for different supply options has been also estimated.