Friday 11
K. Fundamental Processes and Cross-Sections
C.M. Franck, J. De Urquijo - Each talk is 10'+2' duration
› 11:45 - 12:00 (15min)
› Blaise
PIC-MC Simulations for Microplasmapropagation in parallel Multi Cavity Arrangements at Atmospheric Pressure Conditions
Michael Hilbert  1@  , Michael Siemers  2  , Andreas Pflug  2  , Michael Kurrat  1  
1 : Technische Universität Braunschweig, Institute for High Voltage Technology and Electrical Power Systems  (elenia)  -  Website
Schleinitzstr.23, 38106 Braunschweig -  Germany
2 : Fraunhofer Institute for Surface Engineering and Thin Films  (IST)
38108 Braunschweig -  Germany

Porous materials instead of solid ones are planned to be used as high voltage insulations to reduce weight. Due to non-ideal compositions cavities inside the insulation material may lead to discharges. These discharges are called microplasmas or partial discharges.

Analytic approximation for modelling of the discharge processes can be very complex even in simple cavities. Thus, for detailed analysis numerical simulations are required. In this work a three dimensional plasma simulation tool based on the Particle-in-Cell Monte-Carlo method (PIC-MC) is used. The applicability of PIC-MC simulations for small single cavities at atmospheric pressure has been shown previously [1,2]. Subsequently, asymmetric propagation behaviour was revealed by PIC-MC for multiple cavities, aligned in series with respect to the field vector [3].

In contrast, this work analyses the microplasma­propagation in multi cavity arrangements, which are aligned in parallel. Two scenarios are investigated: One with two separated cavities and one with an opening allowing particle transfer. Thus, the interactions between two cavities solely by electric field influence and via additional charge transfer are compared.


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