Groupe activités spatiales
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Groupe activités spatiales RETS (Robust Electrical Transfer System) & CPDT (Contactless Power and Data Transmission) KEY WORDS - Satellite - Power transmission - Data transmission - Slip Ring - Contactless - Power simulation - Power electronics Contacts Industry RUAG Switzerland Daniel Bommottet Head of development ch. de la Vuarpillière 29 CH - 1260 Nyon +(41) 22 361 77 33 [email protected] m www.ruag.com Institut d’Energie et des Systèmes Electriques (IESE) Luc Bossoney Mauro Carpita Professeurs Rte. De Cheseaux 1 CH-1400 Yverdon-les-Bains +41 (0)24 557 61 72 +41(0)24 557 63 05 [email protected] [email protected] iese.heig-vd.ch Financial support RETS-ESA CPDT-SSO Academic partner: - CRPP-EPFL Industrial partner : - RUAG Aerospace - ESA Project duration: RETS: 2009-ongoing CPDT: 2010 RETS (Robust Electrical Transfer System) for Solar Array Drive Mechanism Problematic - Understanding of arcing phenomena in space environment - Over voltage and over current phenomena in slip-ring arrays Solutions - Simulation of the equivalent circuit to understand the electric phenomena (IESE- HEIG) - Simulation of over voltage and over current conditions (IESE-HEIG) - Arcing conditions (CRPP-EPFL) Advantage / Results - Knowledge of the arcing ignition conditions (CRPP-EPFL) -Optimization of the power transfer (IESE) CPDT (Contactless Power and Data transmission) Problematic -Power transfer with a DC-DC converter based a classical Flyback. Transformer composed by U-core ferrite. Measurement not possible on rotative side. (RUAG/IESE) -Data transfer complying with the standard MIL 1553B (IESE) Solutions -Power : asymmetrical transformer design for 200 W and output voltage controlled by measurement of input voltage -Data : investigation ironless data transfer (IESE) Advantage / Results -High efficiency system -Modular transformer SRA Lines + - SAS S3R Battery BCC BDC User DC/DC Variable loads + - Rshunt Csnubber Dsnubber Rsnubber Dout Cout UC1842 Differential am plifier + - Sam ple & hold Rload Ideal rectifier Uin Uout 25 30 35 40 45 50 55 60 O utputV oltage t[s] U o u t [ V ] O utputvoltage m easurem em tvoltage ⋅ 20
description
SRA. Lines. SAS. S3R. BCC. +. Battery. -. BDC. +. User DC/DC. Variable loads. -. KEY WORDS - Satellite - Power transmission - Data transmission - Slip Ring - Contactless - Power simulation - Power electronics. RETS (Robust Electrical Transfer System) & - PowerPoint PPT Presentation
Transcript of Groupe activités spatiales
Groupe activités spatiales
RETS (Robust Electrical Transfer System) &CPDT (Contactless Power and Data Transmission)
KEY WORDS
- Satellite- Power transmission- Data transmission- Slip Ring- Contactless- Power simulation- Power electronics
Contacts
IndustryRUAG Switzerland Daniel Bommottet Head of developmentch. de la Vuarpillière 29CH - 1260 Nyon+(41) 22 361 77 33 [email protected]
Institut d’Energie et des Systèmes Electriques (IESE)Luc BossoneyMauro CarpitaProfesseursRte. De Cheseaux 1CH-1400 Yverdon-les-Bains+41 (0)24 557 61 72+41(0)24 557 63 [email protected]@heig-vd.chiese.heig-vd.ch
Financial supportRETS-ESACPDT-SSO
Academic partner:- CRPP-EPFLIndustrial partner :- RUAG Aerospace- ESAProject duration:RETS: 2009-ongoingCPDT: 2010
RETS (Robust Electrical Transfer System) for Solar Array Drive Mechanism
Problematic
- Understanding of arcing phenomena in space environment
- Over voltage and over current phenomena in slip-ring arrays
Solutions
- Simulation of the equivalent circuit to understand the electric phenomena (IESE-HEIG)
- Simulation of over voltage and over current conditions (IESE-HEIG)
- Arcing conditions (CRPP-EPFL)
Advantage / Results
- Knowledge of the arcing ignition conditions (CRPP-EPFL)
-Optimization of the power transfer (IESE)
CPDT (Contactless Power and Data transmission)
Problematic
-Power transfer with a DC-DC converter based a classical Flyback. Transformer composed by U-core ferrite.
Measurement not possible on rotative side. (RUAG/IESE)
-Data transfer complying with the standard MIL 1553B (IESE)
Solutions
-Power : asymmetrical transformer design for 200 W and output voltage controlled by measurement of input voltage
-Data : investigation ironless data transfer (IESE)
Advantage / Results
-High efficiency system
-Modular transformer
SRALines
+
-
SAS S3R
Battery
BCC
BDC
User DC/DC
Variable loads
+
-
Rshunt
Csnubber
Dsnubber
Rsnubber
Dout
Cout
UC1842
Differentialamplifier
+-
Sample & hold
Rload
Idealrectifier
Uin
Uout
0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.0925
30
35
40
45
50
55
60Output Voltage
t [s]
Uout
[V]
Output voltage
measurememt voltage ⋅20
