Influence of Dead-Time on the Input Current Ripple of Three-Phase Voltage Source Inverter

Juris Arrozy; Darian Retianza; Jorge L.  Duarte; Esin Ilhan Caarls; Henk Huisman

doi:10.3390/en16020688

Influence of Dead-Time on the Input Current Ripple of Three-Phase Voltage Source Inverter

Juris Arrozy (Corresponding author), Darian Retianza, Jorge L. Duarte, Esin Ilhan Caarls, Henk Huisman

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

The DC-link capacitor in power electronic systems is one of the most vulnerable components in terms of reliability. Since a reliable design of the DC-link capacitor depends on an accurate estimation of its current ripple, this paper proposes analytical equations to model the influence of dead-time on the input current ripple of a three-phase voltage source inverter. The effect of dead-time is modeled as a delay in the rising edges of the input current waveform. The proposed analytical equations are derived and then verified by simulations and experiments. The proposed equations generally provide better accuracy in predicting the input current ripple value compared to the benchmark equations. From the simulation and experimental results, the proposed equations are optimized for dead-time values more than 0.7 μ
s and modulation indices less than or equal to 0.7. Limitations of the proposed equations are also discussed. For small phase displacements and high modulation indices (0.8 to 1), the accuracy decreases because of the influence of AC output current ripple. For small modulation indices (less than 0.2) and a high value of dead-time (2 μ
s), the accuracy also decreases due to distortion in the phase current waveforms.

Original language	English
Article number	688
Number of pages	20
Journal	Energies
Volume	16
Issue number	2
DOIs	https://doi.org/10.3390/en16020688
Publication status	Published - 6 Jan 2023

Keywords

DC-link capacitor
dead-time
input current ripple
phase displacement
three-phase voltage source inveter
time-domain approach

UN SDGs

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title = "Influence of Dead-Time on the Input Current Ripple of Three-Phase Voltage Source Inverter",

abstract = "The DC-link capacitor in power electronic systems is one of the most vulnerable components in terms of reliability. Since a reliable design of the DC-link capacitor depends on an accurate estimation of its current ripple, this paper proposes analytical equations to model the influence of dead-time on the input current ripple of a three-phase voltage source inverter. The effect of dead-time is modeled as a delay in the rising edges of the input current waveform. The proposed analytical equations are derived and then verified by simulations and experiments. The proposed equations generally provide better accuracy in predicting the input current ripple value compared to the benchmark equations. From the simulation and experimental results, the proposed equations are optimized for dead-time values more than 0.7 μs and modulation indices less than or equal to 0.7. Limitations of the proposed equations are also discussed. For small phase displacements and high modulation indices (0.8 to 1), the accuracy decreases because of the influence of AC output current ripple. For small modulation indices (less than 0.2) and a high value of dead-time (2 μs), the accuracy also decreases due to distortion in the phase current waveforms.",

keywords = "DC-link capacitor, dead-time, input current ripple, phase displacement, three-phase voltage source inveter, time-domain approach",

author = "Juris Arrozy and Darian Retianza and Duarte, {Jorge L.} and {Ilhan Caarls}, Esin and Henk Huisman",

year = "2023",

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doi = "10.3390/en16020688",

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AU - Arrozy, Juris

AU - Retianza, Darian

AU - Duarte, Jorge L.

AU - Ilhan Caarls, Esin

AU - Huisman, Henk

PY - 2023/1/6

Y1 - 2023/1/6

N2 - The DC-link capacitor in power electronic systems is one of the most vulnerable components in terms of reliability. Since a reliable design of the DC-link capacitor depends on an accurate estimation of its current ripple, this paper proposes analytical equations to model the influence of dead-time on the input current ripple of a three-phase voltage source inverter. The effect of dead-time is modeled as a delay in the rising edges of the input current waveform. The proposed analytical equations are derived and then verified by simulations and experiments. The proposed equations generally provide better accuracy in predicting the input current ripple value compared to the benchmark equations. From the simulation and experimental results, the proposed equations are optimized for dead-time values more than 0.7 μs and modulation indices less than or equal to 0.7. Limitations of the proposed equations are also discussed. For small phase displacements and high modulation indices (0.8 to 1), the accuracy decreases because of the influence of AC output current ripple. For small modulation indices (less than 0.2) and a high value of dead-time (2 μs), the accuracy also decreases due to distortion in the phase current waveforms.

AB - The DC-link capacitor in power electronic systems is one of the most vulnerable components in terms of reliability. Since a reliable design of the DC-link capacitor depends on an accurate estimation of its current ripple, this paper proposes analytical equations to model the influence of dead-time on the input current ripple of a three-phase voltage source inverter. The effect of dead-time is modeled as a delay in the rising edges of the input current waveform. The proposed analytical equations are derived and then verified by simulations and experiments. The proposed equations generally provide better accuracy in predicting the input current ripple value compared to the benchmark equations. From the simulation and experimental results, the proposed equations are optimized for dead-time values more than 0.7 μs and modulation indices less than or equal to 0.7. Limitations of the proposed equations are also discussed. For small phase displacements and high modulation indices (0.8 to 1), the accuracy decreases because of the influence of AC output current ripple. For small modulation indices (less than 0.2) and a high value of dead-time (2 μs), the accuracy also decreases due to distortion in the phase current waveforms.

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KW - time-domain approach

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ER -

Influence of Dead-Time on the Input Current Ripple of Three-Phase Voltage Source Inverter

Abstract

Keywords

UN SDGs

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