NPL – Failure Modes in High Voltage Systems for Automotive & Aerospace: An Overview of Partial Discharge

February 9, 2021 @ 6:30 am – 8:00 am

By Dr Adam Lewis

The growth in electrification of the automotive sector is happening quickly and the aerospace industry is set to follow a similar trend. These systems are pushing the high voltage performance of materials and one failure mode that requires consideration is partial discharge.

Unlike a full dielectric breakdown, partial discharge is a gradual degradation process. In this presentation, we will give an overview of partial discharge, including a look at environmental factors that can affect it, such as temperature, humidity, pressure and contamination. Additionally, we will look a range of detection techniques, test method standards and quantification methods. Finally, we will discuss our on-going test plans at NPL.

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