Effect of semiconductor devices' output parasitic capacitance on zero-current clamping phenomenon in PWM-VSI drives

Rathnayake, Dayan B.; Abeyratne, S.G.

doi:10.1109/iciinfs.2015.7399053

Cited by 4 publications

(5 citation statements)

References 7 publications

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“…When n is increased, the losses approach (39) with X(x), which validates the implementation. Results simulated with the axisymmetric FE model under similar conditions are also shown, and correspond well to the ones predicted by (39) with X(x).…”

Section: B Analytical Validationsupporting

confidence: 72%

“…The ZCC and the flux-density deformation were not observed during the measurements, and the dc link voltage remained close to 15 V at all switching frequencies. This might be due to the parasitic capacitances, which were not accounted for in the simulations, but which may affect the behavior of the system during the deadtime, as discussed in [39]. This is also suggested by the Fig.…”

Section: Comparison To Measurementsmentioning

confidence: 86%

“…The nonsinusoidal shape of the flux density may lead to overestimation of the iron losses. As discussed in [39], consideration of the parasitic capacitances may be important to correctly model the behavior of the system during the deadtime. This is an interesting topic for future research.…”

Section: Discussionmentioning

confidence: 99%

“…Fig. 9 compares the simulated energy-loss densities p cl /f with a relative permeability of 1000 to (39) with and without the X(x) term at b max = 1 T and different fundamental frequencies f. When the number of skin-effect terms in the fluxdensity expansion (10) is n = 1, meaning that the skin-effect is neglected, the simulated losses correspond accurately to (39) without X(x). When n is increased, the losses approach (39) with X(x), which validates the implementation.…”

Section: B Analytical Validationmentioning

confidence: 99%

“…9. Validation of the eddy-current loss model implementation in Simulink by comparing simulated energy-loss densities with n = 1, 2, 3, 4, 5, 6 skineffect terms to (39) with and without X(x) at different frequencies of a sinusoidal average flux density b 0 (t). Finite-element simulation results are also shown.…”

Section: B Analytical Validationmentioning

confidence: 99%

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Simulink Model for PWM-Supplied Laminated Magnetic Cores Including Hysteresis, Eddy-Current, and Excess Losses

Rasilo

Martínez

Fujisaki

et al. 2019

IEEE Trans. Power Electron.

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A new implementation of an iron-loss model for laminated magnetic cores in the MATLAB/Simulink environment is proposed in this paper. The model is based on numerically solving a one-dimensional diffusion problem for the eddy currents in the core lamination and applying an accurate hysteresis model as the constitutive law. An excess loss model is also considered. The model is identified merely based on the catalog data provided by the core material manufacturer. The implementation is validated with analytical and finite-element models and experimentally in the case of a toroidal inductor supplied from a GaN FET full-bridge inverter with 5-500 kHz switching frequencies and a deadtime of 300 ns. Despite the simple identification, a good correspondence is observed between the simulated and measured iron losses, the average difference being 3.3% over the wide switching frequency range. It is shown that accounting for the skin effect in the laminations is significant, in order to correctly model the iron losses at different switching frequencies. Some differences between the measured and simulated results at high switching frequencies are also discussed. The model is concluded to be applicable for designing and analyzing laminated magnetic cores in combination with power-electronics circuits. The Simulink models are openly available.

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Section: B Analytical Validationsupporting

confidence: 72%

Section: Comparison To Measurementsmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Section: B Analytical Validationmentioning

confidence: 99%

Section: B Analytical Validationmentioning

confidence: 99%

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