Dynamic Finite Element Hysteresis Model for Iron Loss Calculation in Non-Oriented Grain Iron Laminations Under PWM Excitation

Patsios, Charalampos; Tsampouris, Evangelos M.; Beniakar, Minos E.; Rovolis, P.; Kladas, Antonios G.

doi:10.1109/tmag.2010.2073690

Cited by 16 publications

(8 citation statements)

References 16 publications

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“…If the ratio fulfills D o /D i ≤ 1.1, as recommended in the standard [5], the mean length should be determined by l m = π(D o + D i )/2. For larger ratios of D o /D i , the mean length of the magnetic path in the cross section should be determined by (3) to correct for the nonuniform magnetic field over the cross-section area. Thus,…”

Section: A Measurement Principlementioning

confidence: 99%

“…With analytical models, it is very difficult to take into account the complex physical phenomena occurring in the magnetic materials, particularly for nonsimple machine geometries and disturbances due to harmonics in the magnetic fields [2]. For the FEM simulations, the most critical factor is the correct choice of the material parameters and the power supply conditions [3]. Magnetic material parameters are typically obtained from Epstein frame measurements based on the IEC 60404-2 and IEC 60404-10 standards [4], [5], where a pure sinusoidal flux density is applied.…”

Section: Introductionmentioning

confidence: 99%

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PWM Influence on the Iron Losses and Characteristics of a Slotless Permanent-Magnet Motor With SiFe and NiFe Stator Cores

Krings

Soulard

Wallmark

2015

IEEE Trans. on Ind. Applicat.

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This paper investigates the influence of switching frequency and modulation index combined with welding on the iron losses in thin silicon-iron and nickel-iron lamination sheets of a small slotless permanent-magnet synchronous machine (PMSM). First, measurements are conducted on welded and nonwelded stator ring cores for switching frequencies between 1 and 20 kHz and modulation indexes of 0.4, 0.7, and 0.9, keeping constant fundamental flux density peak values. This is possible by changing the dc-link voltage of the inverter. The obtained measurement data are afterward used in finite-element method simulations to investigate the inverter influence on the performance of the PMSM.Index Terms-AC machines, iron alloys, loss measurement, machine design, magnetic materials, nickel-iron (NiFe), permanentmagnet machines, pulsewidth modulation (PWM), silicon-iron (SiFe).

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Section: A Measurement Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

PWM Influence on the Iron Losses and Characteristics of a Slotless Permanent-Magnet Motor With SiFe and NiFe Stator Cores

Krings

Soulard

Wallmark

2015

IEEE Trans. on Ind. Applicat.

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“…Step (6) Apply FFT on the sum of the harmonics of the exciting current to obtain amplitude and phase angles, which are substituted into Equation (8) to calculate the iron loss.…”

Section: Non-sinusoidal Excitationsmentioning

confidence: 99%

“…and P harm. are the iron loss components calculated in Equation (8). Since the B peak value is constant, the increasing content of the seventh harmonic of injection voltage leads to a decrease in the fundamental voltage and currents.…”

Section: Single Harmonic Injectionsmentioning

confidence: 99%

“…The use of pulse width modulation (PWM) and non-linear loads results in a difficulty in iron loss prediction in magnetic materials. Although many models, which are based on physical or numerical methods [1][2][3][4][5][6][7][8][9], have been proposed by different researchers, predicting iron losses in magnetic materials, when a non-sinusoidal voltage excitation is applied, has not yet been entirely solved and is still an open research field.…”

Section: Introductionmentioning

confidence: 99%

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Predicting Iron Losses in Laminated Steel with Given Non-Sinusoidal Waveforms of Flux Density

Chen

Huang

et al. 2015

Energies

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Abstract:In electrical machines, iron losses are essential for electromagnetic and thermal designs and analyses. Although many models have been proposed to predict iron losses in magnetic materials, the calculation of iron losses under non-sinusoidal excitations is still an open field. Most works concern the influences of the value, the change rate or the frequency of flux density in the frequency domain. In this paper, we propose an engineering model for predicting loss characteristics with given waveforms of flux density in the time domain. The characteristics are collected from the knowledge of the iron loss in a laminated ring-shaped transformer. In the proposed model, we derive mathematical formulas for exciting currents in terms of flux density by describing the function methods through multi-frequency tests with sinusoidal excitations. The non-linearity of the material is interpreted by branches of conductances accounting for hysteresis and eddy-current losses. Then, iron losses are calculated based on the law of conservation of energy. An experimental system was built to evaluate the magnetic properties and iron losses under sinusoidal and non-sinusoidal excitations. Actual measurement results verify the effectiveness of the proposed model.

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Effect of CO gas on surface profile and magnetic properties of Fe–Si–B amorphous ribbons

Dong

Bai

et al. 2019

J Mater Sci: Mater Electron

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Dynamic Finite Element Hysteresis Model for Iron Loss Calculation in Non-Oriented Grain Iron Laminations Under PWM Excitation

Cited by 16 publications

References 16 publications

PWM Influence on the Iron Losses and Characteristics of a Slotless Permanent-Magnet Motor With SiFe and NiFe Stator Cores

PWM Influence on the Iron Losses and Characteristics of a Slotless Permanent-Magnet Motor With SiFe and NiFe Stator Cores

Predicting Iron Losses in Laminated Steel with Given Non-Sinusoidal Waveforms of Flux Density

Effect of CO gas on surface profile and magnetic properties of Fe–Si–B amorphous ribbons

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