Model of coreless axial flux permanent magnet generator

Radwan-Pragłowska, Natalia; Borkowski, Dariusz; Węgiel, T.

doi:10.1109/isem.2017.7993568

Cited by 18 publications

(25 citation statements)

References 4 publications

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“…. } [33]. The harmonics that will be created in the magnetic flux density spectrum are responsible for the harmonics that will appear in the EMF spectrum.…”

Section: Of 17mentioning

confidence: 99%

“…On a PC (Intel i7-4770 with 8 GB RAM) the finite element analysis requires 12 h in order to reach the steady state condition. where Fα is the MMF of the phase α winding, ws the number of phase winding turns, ps the number of phase coils, x the location according to the stator, ε(r) = , b ≈ , a (r) = , and P = {…−3ps, −2ps, −ps, ps, 2ps, 3ps…} [33]. The axial component of the magnetic flux density due to the permanent magnets can be given by (5):…”

Section: Model Validationmentioning

confidence: 99%

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Study of a Combined Demagnetization and Eccentricity Fault in an AFPM Synchronous Generator

Barmpatza

Kappatou

2020

Energies

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This article investigates the combined partial demagnetization and static eccentricity fault in an Axial Flux Permanent Magnet (AFPM) Synchronous Generator. The machine is simulated using 3D FEM, while the EMF spectrum is analyzed in order to export the fault related harmonics using the FFT analysis. Firstly, the partial demagnetization fault, without the coexistence of eccentricity, and both the static angular and axis eccentricity faults, without the coexistence of partial demagnetization, are studied. In the case of eccentricity fault, the phase EMF sum spectrum has also been used as a diagnostic mean, because, when only eccentricity fault exists in the generator (either angular or axis) new harmonics do not appear in the EMF spectrum. Secondly the combination of partial demagnetization fault with static axis and static angular eccentricity is investigated and different comparisons are made when the demagnetization and the eccentricity level changes. The investigation revealed that the combination of eccentricity and demagnetization creates new harmonics in the EMF spectrum. The novelty of the article is that these combined faults are studied for the first time in the international literature, and the phase EMF sum spectrum has not been previously used for eccentricity diagnosis in this machine type.

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“…. } [33]. The harmonics that will be created in the magnetic flux density spectrum are responsible for the harmonics that will appear in the EMF spectrum.…”

Section: Of 17mentioning

confidence: 99%

Section: Model Validationmentioning

confidence: 99%

Study of a Combined Demagnetization and Eccentricity Fault in an AFPM Synchronous Generator

Barmpatza

Kappatou

2020

Energies

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“…Field analysis is a useful tool for verifying the correctness of created peripheral models. In this thesis, the authors used the ANSYS Maxwell software in version 2019 R1 (ANSYS Inc., Canonsburg, PA, USA), which complements the concept of generator work modeling [21,22], with the calculation of synchronous generator parameters [23] using the Matlab/Simulink package. Field analysis make it possible not only to model phenomena occurring in electric machines, but also to test selected generator structures before the changes are checked in the real object.…”

Section: Description Of the Simulation Modelsmentioning

confidence: 99%

The Analysis of the Symmetrical Short-Circuit Currents in Backup Power Supply Systems with Low-Power Synchronous Generators

Mamcarz¹,

Albrechtowicz²,

Radwan-Pragłowska³

et al. 2020

Energies

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This paper presents an analysis of the short-circuit currents of a synchronous generator with a rated power of 16 kVA. For this purpose, the authors carried out measurements of real short-circuit currents during laboratory tests. Additionally, a simulation model of the generator was developed according to the individual machines data from the catalog and field calculations in ANSYS Maxwell software. Based on the mentioned research, the authors compared waveforms of the symmetrical short-circuit currents. In this paper, the last compared family of short-circuit current waveforms was obtained using analytic calculations. As the presented comparison shows, the assumed method of selecting short-circuit waveforms impacted their values. However, the difference in energy related to short-circuit currents did not influence on the selection of the short-circuit protections, especially at low values of steady-state short-circuit currents and short time constants characteristic for the generators, performing the functions of an alternative power supply. Regardless of the research method, the results presented in the article show that the selection of the short-circuit protections is complicated in case of hybrid electrical systems equipped with low power generators.

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“…Generators in this class of applications typically have a cylindrical rotor with surface-mounted magnets, but axial magnetic flux disc generator solutions are also very popular [7,8]. For this reason, both design and mathematical modelling techniques of these machines are being constantly developed and improved [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. The Axial Flux PM (AFPM) generator deserves special attention due to their variety of designs and popularity in low-power home applications.…”

Section: Introductionmentioning

confidence: 99%

“…The Axial Flux PM (AFPM) generator deserves special attention due to their variety of designs and popularity in low-power home applications. This article is a continuation of the authors' papers [9][10][11] on AFPMG modeling, however it does not limit the possibility of applying the presented methodology to other constructions of PM generators.…”

Section: Introductionmentioning

confidence: 99%

Application of the Harmonic Balance Method for Spatial Harmonic Interactions Analysis in Axial Flux PM Generators

2021

Self Cite

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In this paper, an application of the Harmonic Balance Method (HBM) for analysis of Axial Flux Permanent Magnet Generator (AFPMG) is carried out. Particular attention was paid to development of mathematical model equations allowing to estimate the machine properties, without having to use quantitative solutions. The methodology used here allowed for precise determination of Fourier spectra with respect to winding currents and electromagnetic torque (both quantitatively and qualitatively) in steady state operation. Analyses of space harmonic interaction in steady states were presented for the three-phase AFPMG. Satisfactory convergence was between the results of calculations and measurements which confirmed the initial assumption that the developed circuit models of AFPMG are sufficiently accurate and can be useful in the diagnostic analyses, tests and the final stages of the design process.

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Model of coreless axial flux permanent magnet generator

Cited by 18 publications

References 4 publications

Study of a Combined Demagnetization and Eccentricity Fault in an AFPM Synchronous Generator

Study of a Combined Demagnetization and Eccentricity Fault in an AFPM Synchronous Generator

The Analysis of the Symmetrical Short-Circuit Currents in Backup Power Supply Systems with Low-Power Synchronous Generators

Application of the Harmonic Balance Method for Spatial Harmonic Interactions Analysis in Axial Flux PM Generators

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