Impedance measurement of active systems with pulsed multitone signals from 300 kHz to 60 MHz
Publication date
2025-07-15
Document type
Konferenzbeitrag
Organisational unit
Conference
2025 ESA Workshop on Aerospace EMC (Aerospace EMC) ; Seville, Spain ; May 12–14, 2025
Publisher
IEEE
Book title
2025 ESA Workshop on Aerospace EMC (Aerospace EMC)
Peer-reviewed
✅
Part of the university bibliography
✅
Language
English
Keyword
dtec.bw
Abstract
A dynamical impedance analysis of complex electrical aerospace systems during operation can provide detailed information for efforts to further enhance system stability and reliability. As conventional single-tone impedance measurements are relatively slow compared to possible system state changes, a pulsed method using a synthesised stochastic multitone signal is proposed. This method is validated for a passive permanent magnet synchronous motor through a result comparison with an RF I-V impedance measurement. Then it is applied to an active DC- DC converter to highlight the detection of impedance changes due to the switching of the involved transistors, impossible to detect with conventional impedance measurement methods. It will be discussed how this method can be further adapted to overcome currently existing practical limitations and how it can be optimised for other electrical systems of interest.
Version
Published version
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