Systems operate at DC voltages from 270V to over 800V (with
these bus voltages increasing during transient events). Components operating in
these DC systems are generally expected to be partial discharge free. However,
the estimation of the voltage at which a system will remain PD free is
difficult as it will be a function of the insulation conductivity (which can
vary significantly with temperature). Additionally, measurements of DC partial
discharge are challenging owing to the low frequency of discharges. Guidance on the best methods to estimate DC partial
discharge performance and how to verify through test would be welcome. It would
ensure that electrical products being developed for use on the next generation
of aircraft would be designed at the optimal level of power density.
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Project Scope
The agreed project scope can be downloaded here.
Timings
Our target timings for this project are as follows (project starting in August 2025)
Phase 1: Experimental Set-Up, Literature Review, Testing At Atmospheric Pressure - August to November
Phase 2: Testing At Reduced Pressure & Elevated Temperature - December to April
Phase 3: Generation of Test Procedure - May to July
