CPDT (Contactless Power and Data Transmission)

wideeyedarmenianElectronics - Devices

Nov 24, 2013 (3 years and 6 months ago)

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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
Daniel.Bommottet@r
uag.co
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

luc.bossoney@heig
-
vd.ch

mauro.carpita@heig
-
vd.ch

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

+

-

R
shunt
C
snubber
D
snubber
R
snubber
D
out
C
out
UC
1842
Differential
amplifier
+
-
Sample
&
hold
R
load
Ideal
rectifier
U
in
U
out
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
25
30
35
40
45
50
55
60
Output Voltage
t [s]
U
out
[V]


Output voltage
measurememt voltage

20