Abstract
Inductors, known as basic passive components, are the essential devices in power electronics converters. The high frequency characteristics, including parasitic capacitance, in inductors can introduce significant capacitive current to the system due to the fast-switching transitions facilitated by wide-bandgap (WBG) devices. To represent these important parasitic capacitance behaviors, equivalent-circuit representations using capacitors have been proposed, where the capacitor values are usually assumed to be positive resulting in positive impedance characteristics. In this paper, the authors share an interesting finding of the negative impedance characteristics and equivalent negative capacitance in passive inductors, which are measured by an accurate impedance analyzer with factory-approved calibrations. Besides, two different measurement methods are also implemented to measure the negative impedance behaviors as cross validations for ensuring correct measured results. The experimental results also reveal that the negative impedance characteristics of inductors can be compensated by paralleling multiple ceramic capacitors. Perspectives, future work, and conclusions are addressed at the end of this paper.
Original language | English |
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Title of host publication | 2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022 |
Publisher | IEEE |
Publication date | 2022 |
ISBN (Electronic) | 9781665410816 |
DOIs | |
Publication status | Published - 2022 |
Event | 23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022 - Tel-Aviv, Israel Duration: 20 Jun 2022 → 23 Jun 2022 |
Conference
Conference | 23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022 |
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Country/Territory | Israel |
City | Tel-Aviv |
Period | 20/06/2022 → 23/06/2022 |
Sponsor | HIL Academy, Payton Planar, Pazy Excelling in Science, SolarEdge, TDK, Typhoon HL |
Series | Proceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL |
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Volume | 2022-June |
ISSN | 1093-5142 |
Bibliographical note
Publisher Copyright:© 2022 IEEE.
Keywords
- capacitive
- equivalent negative capacitance
- Inductors
- negative impedance
- passive components