automated software system for the simulation of arcing in … · 2016. 11. 18. · automated...
TRANSCRIPT
![Page 1: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/1.jpg)
Automated Software System for the Simulation Of Arcing In
Spacecraft On-Board Power Electronics Equipment
Vasily Kozhevnikov, Vadim Karaban, Denis Kosov, Andrey Kozyrev, Natalia
Semeniuk, and Alexander Batrakov
Munich, 2016
![Page 2: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/2.jpg)
Credits
2
Project RFMEFI60714X0008 “Development of methods for complex
diagnostics of onboard equipment of spacecraft on resistance to
arcing” of the Ministry of Education and Science of Russian Federation
Participants:
• Institute of High Current Electronics, Tomsk, Russia
• Tomsk State University, Tomsk, Russia
• Tomsk State University of Control Systems and Radioelectronics,
Tomsk, Russia
![Page 3: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/3.jpg)
Introduction
3
![Page 4: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/4.jpg)
Root problem
Today, in civil spacecraft the electric arcing is
one the main factors leading to partial or
complete failure of electronic equipment.
This problem escalates with the increase of
operating voltages from 27 Volts up to 100 Volts
since 2000.
4
![Page 5: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/5.jpg)
Experimental example of primary arc below Paschen’s minimum (in Ar)
5
V0 = 100 V,
p0 = 20 Pa
Vbreakdown = 169 V (!)
![Page 6: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/6.jpg)
What is diagnostics ?
6
• Search for the region where the self-sustained discharge is most probable;
• Investigate multiple conditions of arcing with respect to variation of main
parameters (pressure, electrons emission, etc.)
Pa
ram
ete
r 2
Parameter 1
unsafe
safe
![Page 7: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/7.jpg)
Diagnostic methodology
7
![Page 8: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/8.jpg)
Multiscale problem (Full-scale DC-discharge simulation)
8
“Fast”
DC-discharge
simulation
Satellite secondary power supply
in 231x174x30 mm case:
~50Gb RAM
& 240 cores
Device size ~ 500 mm,
Critical region ~ 1-5 mm
Debye length ~ 0.01-0.1 mm
![Page 9: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/9.jpg)
Our approach
9
Full-scale SPICE + Electrostatics
simulation (AC/DC module of COMSOL Multiphysics)
1) Electric field-enhancement regions extraction
2) DC-discharge simulation + Parametric sweep option
Pa
ram
ete
r 2
Parameter 1
unsafe
safe
Plasma module of COMSOL Multiphysics
Debye length
scale
Device scales
![Page 10: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/10.jpg)
Implementation
10
![Page 11: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/11.jpg)
Software interface
11
![Page 12: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/12.jpg)
Preprocessing module
12
COMSOL Application Builder
• Complete PCB (ASCII) file format import At the industrial partner “JSC Reshetnev Information Satellite Systems”
request the PCB (ASCII) import was implemented in order to use Altium Designer
files.
• Geometry improvements We have designed native three-dimensional kernel to correct inaccuracies
obtained during import.
![Page 13: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/13.jpg)
Preprocessing module: Example
13
• Automatic removing of inaccuracies in geometrical details.
![Page 14: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/14.jpg)
Live PCB import procedure
14
![Page 15: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/15.jpg)
Processing module
15
COMSOL Application Builder
AC/DC Electrostatics + Plasma modules.
• Solve complete electrostatics problemFind electrostatic potential and electric field absolute value distribution for defined geometry.
Border conditions (potentials at conductors) are implied using SPICE simulation results.
• Critical regions location (by estimating of |E| local maxima).
• Compile 2D models of critical regions from 3D using three
coordinate sections
• DC-discharge simulation in 2D models with Parametric Sweep(in order to obtain critical parameters diagrams)
![Page 16: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/16.jpg)
Electric field distribution
Full-scale SPICE + Electrostatics simulation (with AC/DC module of
COMSOL Multiphysics)
Satellite secondary
power supply PCB |E(x,y,z)|
![Page 17: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/17.jpg)
Location of critical regions
17
3D
2D
![Page 18: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/18.jpg)
DC-discharge simulation
18
Computation of critical parameters diagrams using
DC-discharge simulation (Plasma module of COMSOL Multiphysics)
for each simplified model.
Electron density distributionCritical parameters diagram
![Page 19: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/19.jpg)
Conclusions
19
![Page 20: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/20.jpg)
Summary
The previously proposed innovative computational approach has
been successfully implemented in pilot software system completely
built with COMSOL Multiphysics. COMSOL Application builder was
used along with COMSOL AC/DC Electrostatics and Plasma modules
in order to create a complete simulation cycle.
The developed software enables to combine possible arc positioning
with the further investigation of certain regimes of the discharge
ignition without full-scale DC-discharge simulation. The software
allows upgrading the development technology of arc-resistant
electronics intended for operation in the wide range of temperature,
pressure and other environment or/and technical parameters.20
![Page 21: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/21.jpg)
Thank you!
21
![Page 22: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/22.jpg)
Appendix
22
![Page 23: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/23.jpg)
Set of models (“zoo”)
23
Drawing up of a set of simple two- and three-
dimensional geometrical configurations of discharge
gaps using preliminary diagnostics results
![Page 24: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/24.jpg)
Circular defect in laquer insulating coating
(2D-axisymmetric model)
24
r=0r=0
Gas
r=4R1
d
![Page 25: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/25.jpg)
Sample 2D critical parameters diagram (diel - p0
plot)
25
?PR
ES
SU
RE
p0
=
10
Pa
–1
0 k
Pa
EMISSION FROM INSULATIONdiel = 0.01 - 1.0Other parameters:
Interelectrode distance – 3 mm
Insulation thickness – 0.05 mm
Initial plasma density – 103 cm-3
![Page 26: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/26.jpg)
Applied voltage: two cases
26
Reference case V0 = 200 V (above Paschen’s min.)
Operating case V0 = 100 V (below minimal breakdown voltage)
Vmin = 169 V
![Page 27: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/27.jpg)
Reference case (V0 > Vmin):
Self-sustained discharge @ 1 ms
27
Cu
rre
nt (A
)
Time (s)
V0 = 200 V, p0 = 3 kPa
Ne(r,z)
Electrons
density
![Page 28: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/28.jpg)
Operating mode
(diel variation @ p0 = 3kPa, V0 = 100 V)
28
Cu
rre
nt (A
)
Time (s)
0.01
1.5
0.3
0.5
0.7
0.9
diel
![Page 29: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/29.jpg)
Operating mode
(pressure variation @ diel = 0.9, V0 = 100 V)
29
Cu
rre
nt (A
)
Time (s)
Self-sustained
discharge
![Page 30: Automated Software System for the Simulation Of Arcing In … · 2016. 11. 18. · Automated Software System for the Simulation Of Arcing In Spacecraft On-Board Power Electronics](https://reader035.vdocuments.us/reader035/viewer/2022071513/6134cdfddfd10f4dd73bf750/html5/thumbnails/30.jpg)
Critical parameters diagram (diel, p0)
30 diel
p0
safe
unsafe
R=0.5 mm