TY - GEN
T1 - Downsizing Design of Powdered Iron Core Inductor Based on Variable-Frequency Modulation Targeted at Harmonics Suppression
AU - Zhang, Jinshui
AU - Zhang, Yan
AU - Liu, Jinjun
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/11/9
Y1 - 2020/11/9
N2 - Powdered iron core inductor excels in high power applications but perform a noticeable non-linear saturating feature. This paper assesses this feature in terms of the growth caused on current high-frequency harmonics. A frequency-domain method based on signal composition is formulated to predict the current spectrum considering the non-linear feature of inductors. Then a variable frequency modulation strategy is proposed to eliminate the effect of the saturation, based on which the power converter is able to adopt smaller inductors while maintaining a low level of harmonics. Consequently, the power density can be improved. This predictive method is verified on a totem-pole rectifier prototype. Furthermore, with the proposed modulation strategy, the total harmonics distortion is reduced by 0.69%, superior to the case of expanding the inductor size to three times of original.
AB - Powdered iron core inductor excels in high power applications but perform a noticeable non-linear saturating feature. This paper assesses this feature in terms of the growth caused on current high-frequency harmonics. A frequency-domain method based on signal composition is formulated to predict the current spectrum considering the non-linear feature of inductors. Then a variable frequency modulation strategy is proposed to eliminate the effect of the saturation, based on which the power converter is able to adopt smaller inductors while maintaining a low level of harmonics. Consequently, the power density can be improved. This predictive method is verified on a totem-pole rectifier prototype. Furthermore, with the proposed modulation strategy, the total harmonics distortion is reduced by 0.69%, superior to the case of expanding the inductor size to three times of original.
KW - high-frequency harmonics
KW - powdered iron core
KW - signal decomposition
KW - variable-frequency modulation
UR - https://www.scopus.com/pages/publications/85098595767
U2 - 10.1109/COMPEL49091.2020.9265806
DO - 10.1109/COMPEL49091.2020.9265806
M3 - 会议稿件
AN - SCOPUS:85098595767
T3 - 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020
BT - 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020
Y2 - 9 November 2020 through 12 November 2020
ER -