download presentatie - EMC

EMC research
at the University of Twente
Prof.dr.ir. Frank Leferink
Chair EMC
http://www.utwente.nl/ewi/te/
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UNIVERSITY OF TWENTE.
First: EMC@THALES
 Studies:
 Interference via power supply onboard naval vessels
 Shielding of composite structures
 Coupling between antennas onboard naval vessels
 Etc.
 Programs:
 Many, many radars to many countries
 New:
 Integrated mast (civil / MIL: CE101, CE102, CS101, so 30Hz-..MHz).
Challenges (related to conducted EMI)
» Many CE marked SMPS resonating: +30dB
» Transients power lines coupled into ethernet
» Filters with a lot of mutual parasitics: at 100MHz -100dB
 NSxx: new rotating active phased array radar
 SMART-L ELR: 1344 transmit-receive elements, many power
interfaces, ‘mast is kast’ principle
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UNIVERSITY OF TWENTE.
EMC group @ University of Twente, 1
Frank Leferink (1 day/week, other: THALES)
Frits Buesink (3 days/week)
Projects: 2 researchers obtained their PhD
IOP-EMVT : EMI and power drive systems), 2007-2012
Anne Roc’h, promotie 12 oktober 2012
IOP-EMVT: Power Quality & EMC, 2009-2013
Roelof Timens, promotie 8 november 2013,
Electromagnetic Interference of Equipment in Power Supply Networks
Currently:
7 PhD projects (1 vacancy)
1 Postdoc
Visiting researchers: Fatou Diouf (France),
Ahmed Wefky (Spain), Aizan Ubin (Malaysia)
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UNIVERSITY OF TWENTE.
EMC group @ University of Twente, 2
Current projects
THALES: Lightning w.r.t. composite structures, 2008-2013
Alex Blaj, thesis in finalization phase, now Hitec, UPS systems
IOP-EMVT: Embedded Passives, 2010-2014
Olga Tereshchenko , started writing thesis
FP7 EU: High Intensity Radiated Fields, 2009-2015
Robert Vogt-Ardatjew
Maritime Innovation, 2012-2016
Bart van Leersum
KP7 EU: Protection of Civil Infrastruct. against EM Attack,2012-201
Stefan van de Beek
Moderne gebruikers en opwekkers van elektrische energie in de
slimme stad, 2012-2016
Cees Keyer
KP7 EU: Improved EMC Test Methods in Industrial
Environments, 2013-2017
Postdoc: Roelof Timens + Frits Buesink
NWO Smart Grid: EMI in multi-level converters, 2014-2018
vacancy
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UNIVERSITY OF TWENTE.
Assistentie NL industrie/samenleving
 Kleine bedrijven die PV installaties bouwen
 Personen die problemen hebben met smart meters
 Bedrijven met EMI problemen in o.a. PCB en
installatie
 Windmolens die op hol slaan door power line
telecommunication (PLT) (toonfrequent)
 Procesbuis met RF verwarming voor
voedselindustrie
 Gemeenten adviseren over antennebeleid
 Gemeente adviseren over C2000
 Media: EMF, C2000, PQ
 Etc.etc.etc.
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Kennismarkt, 23 mei 2014
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UNIVERSITY OF TWENTE.
EMC@UT, Power Electronics




Many good results, best paper awards
Chapter in an eBook (2012)
Journal paper (2012)
Defended thesis 12 October 2012
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UNIVERSITY OF TWENTE.
PDS, conducted emission
Requirements for
high-tech systems
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Civil requirements
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UNIVERSITY OF TWENTE.
PDS, radiated emission
Electric field strength [dBmV/m]
120
unshielded cable
shielded cable
+ dV/dt
+ CMC+C
100
80
Civil
require
ments
60
40
Requirements for
high-tech systems
20
0
0.01
0.1
1
10
Frequency [MHz]
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UNIVERSITY OF TWENTE.
100
EMC @ UT, PQ&EMC
 Power Quality & EMC
 Develop models to predict interaction between modern electronic
equipment connected via the mains supply
400
300
 Cases:
200
100
Voltage (V)
 Carre building, high THD
 PV and PDS farm
0
-100
-200
 PV causing overvoltage
-300
-400
 Damage in windmill generator due to PLT
Time (s)
Vhf[PE-N]
8
6
4
 Status: 8 Nov 2013 defence
Voltage (V)
2
0
-2
-4
 EMC=incl. PQ….
-6
-8
-2.5
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9
-2
-1.5
-1
-0.5
0
0.5
Time (seconds)
1
UNIVERSITY OF TWENTE.
1.5
2
2.5
-3
x 10
EMC @ UT, effects of lightning
 Nice results
 Example:
Patent
bearing
 Now thesis
writing
with pre-loading
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without pre-loading
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UNIVERSITY OF TWENTE.
EMC@UT, Embedded Materials
 New materials to reduce EMI
 EBG for reducing PDN
(power distribution noise)
signal integrity & EMI:
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UNIVERSITY OF TWENTE.
EMC @ UT, HIRF-SE
 High-Intensity Radiated Fields, Synthetic Environment (HIRF-SE)
 Develop simulation techniques for EM fields in reflecting
environments
 Jan 2012 - Dec. 2015
105
Received Voltage [dBuV]
100
95
90
85
1s stirring, pk
1s stirring, RMS
1s stirring, Av
80
75
1100
1110
1120
1130
1140
1150
1160
1170
1180
1190
1200
Frequency [MHz]
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UNIVERSITY OF TWENTE.
EMC@ UT, Maritieme Innovation
 Concept of ‘de mast is de kast’
for the whole ship
 Period: 1 jan 2012 – 31 dec 2015
 Large, complex,
high-tech system
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UNIVERSITY OF TWENTE.
EMC @ UT, Structures
 Strategies for the Improvement of Critical Infrastructure
Resilience to Electromagnetic attacks
 1 July 2012 – 31 Aug 2016
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UNIVERSITY OF TWENTE.
EMC @ UT, EMRP
 JRP-i10:
Improved EMC Test Methods in Industrial
Environments,
from laboratory to industrial environment
 1 July 2013 – 31 July 2017


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WP1: Conducted emission
WP2: Conducted immunity/susceptibility
WP3: Radiated emission
WP4: Radiated immunity/susceptibility
WP5: EMC reference devices for round-robin tests
WP6: Impact
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UNIVERSITY OF TWENTE.
EMC @ UT, Smart Grid
 EMI in multi-level converters for Smart Grid
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UNIVERSITY OF TWENTE.

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