TY - GEN
T1 - Calculation and Spectral Analysis of DC-Link Current for three phase PWM inverter
AU - Sun, Jianxia
AU - Lin, Cheng
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - Due to the effect of high-frequency switches, the dc-link current of the PWM inverter contains a large number of harmonic components, which results in ripple fluctuations of dc bus voltage and directly affects the quality and reliability of the power supply system. According to the Double Fourier Series method, we deduce the expressions of the dc-link current, which include the low frequency and high frequency parts. Besides, the effect of the output current harmonics on the dc-link current is considered, which improves the accuracy of the expression. Based on the derived expressions, we quantize the spectrum of the dc-link current. From the view of magnitude, we deduce the specific harmonic distribution in the frequency domain. The quantized spectrum of dc-link current provides the guideline for the dc filter design, which can reduce the system volume and cost. Finally, the theoretical analysis of dc-link current is verified by the Fast Fourier Transform analysis results obtained by the simulation model platform.
AB - Due to the effect of high-frequency switches, the dc-link current of the PWM inverter contains a large number of harmonic components, which results in ripple fluctuations of dc bus voltage and directly affects the quality and reliability of the power supply system. According to the Double Fourier Series method, we deduce the expressions of the dc-link current, which include the low frequency and high frequency parts. Besides, the effect of the output current harmonics on the dc-link current is considered, which improves the accuracy of the expression. Based on the derived expressions, we quantize the spectrum of the dc-link current. From the view of magnitude, we deduce the specific harmonic distribution in the frequency domain. The quantized spectrum of dc-link current provides the guideline for the dc filter design, which can reduce the system volume and cost. Finally, the theoretical analysis of dc-link current is verified by the Fast Fourier Transform analysis results obtained by the simulation model platform.
KW - Double Fourier Series
KW - PWM inverter
KW - harmonic
UR - https://www.scopus.com/pages/publications/85123615636
U2 - 10.1109/Ee53374.2021.9628308
DO - 10.1109/Ee53374.2021.9628308
M3 - Conference contribution
AN - SCOPUS:85123615636
T3 - Proceedings of 2021 21st International Symposium on Power Electronics, Ee 2021
BT - Proceedings of 2021 21st International Symposium on Power Electronics, Ee 2021
A2 - Katic, Vladimir
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st International Symposium on Power Electronics, Ee 2021
Y2 - 27 October 2021 through 30 October 2021
ER -
