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Ultra Fast Current Shunt (UFCS) : a gigahertz bandwidth ultra low inductance current sensor
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Shillaber, Luke, Jiang, Yunlei, Ran, Li and Long, Teng (2022) Ultra Fast Current Shunt (UFCS) : a gigahertz bandwidth ultra low inductance current sensor. IEEE Transactions on Power Electronics, 37 (12). pp. 15493-15504. doi:10.1109/tpel.2022.3184638 ISSN 1941-0107.
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Official URL: https://doi.org/10.1109/tpel.2022.3184638
Abstract
In an effort to reduce switching loss, increase switching frequencies and shrink passive component sizes, power device switching times are being pushed into nanosecond and sub-nanosecond intervals. However these fast switching times require high rates of change of current making the power devices susceptible to over-voltage damage from parasitic inductance in the power loop. This presents challenges in measuring the device switching current accurately and in turn makes accurate measurements of device switching energy and stored charge difficult. Traditional current measurement methods either do not have the required frequency response to view the switching edge accurately or have a high parasitic inductance that can significantly alter switching performance and cause damage to the power device. In this paper an active current measurement system is developed. This circuit achieves up to 1.6 GHz bandwidth with zero overshoot. By utilizing mutual inductance cancellation an insertion inductance down to 20 pH has been achieved. The research performed in this paper thereby allows for accurate measurement of device switching loss with minimal power circuit disturbance. The performance of this current measurement is experimentally verified in the frequency domain using a vector network analyzer (VNA) and time domain switching measurements are compared with state of the art current measurement.
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
SWORD Depositor: | Library Publications Router | ||||||
Journal or Publication Title: | IEEE Transactions on Power Electronics | ||||||
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) | ||||||
ISSN: | 1941-0107 | ||||||
Official Date: | December 2022 | ||||||
Dates: |
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Volume: | 37 | ||||||
Number: | 12 | ||||||
Page Range: | pp. 15493-15504 | ||||||
DOI: | 10.1109/tpel.2022.3184638 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access |
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