Voltage Oscillation Suppression for the High-Frequency Bus in Modular-Multiactive-Bridge Converter

The electromagnetic interference issues, such as high-frequency oscillation (HFO) caused by the high dv / dt and parasitic elements, have been becoming a challenge in modern power electronics. Modular-multiactive-bridge (MMAB) converter, in which active bridge modules are linked with high-frequency...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2021-09, Vol.36 (9), p.9737-9742
Main Authors: Wei, Shusheng, Zhao, Zhengming, Yuan, Liqiang, Wen, Wusong, Chen, Kainan
Format: Article
Language:English
Subjects:
Bridge circuits
Clamps
Electric bridges
Electric converters
Electric potential
Electromagnetic interference
Hafnium oxide
High-frequency oscillation (HFO)
Impedance
Inductors
Magnetic devices
Oscillators
Power converters
Resistors
selected harmonic elimination (SHE)
suppression method
Topology
Voltage
voltage clamp
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Summary:The electromagnetic interference issues, such as high-frequency oscillation (HFO) caused by the high dv / dt and parasitic elements, have been becoming a challenge in modern power electronics. Modular-multiactive-bridge (MMAB) converter, in which active bridge modules are linked with high-frequency transformers, is a typical power converter with a large number of switching semiconductor and magnetic devices. The mechanism of HFO in MMAB is studied by the analysis of the oscillation tank first. Then, from the perspective of the oscillation tank and the excitation source itself, two suppression strategies, including the passive voltage clamping method and active selected harmonic elimination general phase-shift modulation method, are proposed, respectively. Finally, the effectiveness of both methods is verified and compared by experimental results. The research results in this letter can be utilized in other topologies, such as dual active bridge, and may provide some inspiration to solve the similar HFO problem.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2021.3063500