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ULg - EMC Lab Budapest - 2006 Oct 17 - JTA2 - Cost 286

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ULg EMC Lab Budapest 2006 Oct 17 JTA2 Cost 286 – PowerPoint PPT presentation

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Title: ULg - EMC Lab Budapest - 2006 Oct 17 - JTA2 - Cost 286


1
COST 286 - JTA 2 - EMC analysis of LF
unstructured telecom networks Ir.
V.Beauvois (V.Beauvois_at_ulg.ac.be) University of
Liège, Belgium
2
Cost 286 JTAs
  • Cost Action
  • to unify people in Europe working on the same
    subject
  • no fund except for traveling and organizing
    meetings workshops
  • Cost 286
  • EMC aspects of diffused communication systems
  • PLC is one of the subject
  • JTA Joint Technical Actions
  • JTA2 EMC PLC
  • STSMs short term scientific missions
  • Prof. Catrysse, Oostende, Belgium
  • Prof. Heyno Garbe Sven Batterman, Hannover,
    Germany
  • Prof. Varju, Budapest, Hungary
  • Prof. Feran Silva, Barcelona, Spain
  • Prof. Newbury, Open University, UK

3
Cost 286 JTA2 STSMs
  • Prof. Catrysse, Oostende, Belgium
  • Prof. Heyno Garbe Sven Batterman, Hannover,
    Germany
  • Prof. Feran Silva, Barcelona, Spain
  • Emission of PLC methods of measurement
  • (radiated, LCL, AMN, MDF)
  • Prof. Newbury, Open University, UK
  • Emission measurements in Scotland
  • Prof. Varju, Budapest, Hungary
  • Emission of PLC methods of measurement on
    one-to-one
  • scale LV network (BME laboratory)
  • this week

4
Cost 286 JTA2 STSMs
  • Prof. Catrysse, Oostende, Belgium
  • Emission of PLC methods of measurement
  • CISPR/I/PLT framework
  • (1) Radiated emission by an operated PLC system
    in situ
  • (related to the quality of the network and the
    PLC modem used)

5
Cost 286 JTA2 STSMs
  • Prof. Catrysse, Oostende, Belgium
  • Emission of PLC methods of measurement
  • (2) How to characterize the power mains network
    itself ? Unbalance ?
  • with LISN, LCL or MDF or ?

6
Cost 286 JTA2 STSMs
  • Prof. Catrysse, Oostende, Belgium
  • Emission of PLC methods of measurement
  • (3) A PLC modem should be CE (EMC and RTTE
    directives)
  • to characterize with a well defined power mains
    reference network
  • (artificial power mains network needed and
    described by
  • DM and CM Z, cable-length, type of wiring, height
    above ground
  • plane, K-factor of this wiring, LCL and/or MDF)
  • To measure radiated H-field, LCL and/or MDF of
    the unit,
  • conducted emission on the mains wiring using a
    LISN-like setup.

7
Cost 286 JTA2 STSMs
  • Prof. Newbury, Open University, UK
  • Emission measurements in Scotland (Crieff
    Stonehaven)

8
JTA 2 EMC analysis of LF unstructured telecom
networks Preliminary results on a PLC U network
(emission immunity) Ir. V.Beauvois (V.Beauvois_at_
ulg.ac.be) Thanks to Pierre and our students
9
Initial configuration U network (no PLC)
Mains or not
C1 on T.G.
C2 to Receiver
2.67m
2.67m
3m
H 80cm
A set of 3 power cords for a total length of 8.34m
10
Initial configuration measurement equipments
  • EMI receiver ESI 26 RS (20Hz-26GHz)
  • receiver mode
  • measurements between 1-30MHz
  • BW 9kHz
  • frequency step 6kHz
  • Pk Avg detectors
  • with T.G.
  • Loop antenna HFH2-Z2 RS
  • Coupling devices C1 C2 (provided by the Open
    University, UK)

11
Initial configuration step 1
  • Passive network not connected to power mains of
    the building
  • C1 C2 at each end of the U network
  • C2 to ESI receiver (Peak detector)
  • if C1 is not connected green curve
  • if C1 to ESI T.G. (-20dBm) blue curve

12
Initial configuration step 2
  • Active network connected to power mains of the
    building
  • C1 C2 at each end of the U network
  • C2 to receiver (Peak detector)
  • if C1 is not connected green curve
  • if C1 to T.G. (-20dBm) blue curve

13
Initial configuration step 3
  • Passive network not connected to power mains of
    the building
  • C1 to T.G. (-20dBm)
  • Loop antenna to receiver
  • Influence of loop orientation
  • perpendicular to U base at 1m green curve
  • parallel to U base at 1m blue curve

14
Initial configuration step 4
  • Passive or Active networks
  • not or connected to power mains of the building
  • C1 to T.G. (-20dBm)
  • Loop antenna to receiver,
  • parallel to U base at 1m
  • Influence of power mains
  • active network green curve
  • passive network blue curve

15
Second configuration U network (with PLC)
Mains
Laptop
2.67m
2.67m
Laptop
3m
H 80cm
A set of 3 power cords for a total length of 8.34m
16
Second configuration measurement equipments
  • EMI receiver ESI 26 RS (20Hz-26GHz)
  • receiver mode
  • measurements between 1-30MHz
  • BW 9kHz
  • frequency step 6kHz
  • Pk Avg detectors
  • with T.G.
  • Loop antenna HFH2-Z2 RS
  • Coupling devices C1 C2 (provided by the Open
    University, UK)
  • Powerlan 100 kit Topcom
  • 2 laptops on batteries

17
Second configuration step 1
  • Active network connected to power mains of the
    building
  • Loop antenna to receiver

Noise floor in the lab
Without communication
With communication
18
Second configuration U network (with PLC)
Mains
Laptop
C1 on T.G.
2.67m
2.67m
Laptop
3m
H 80cm
A set of 3 power cords for a total length of 8.34m
19
Second configuration step 2
  • Active network connected to power mains of the
    building
  • C1 to T.G. (-20dBm)
  • Loop antenna to receiver

Without communication
With communication
20
Second configuration U network (with PLC)
Mains
Laptop
2.67m
2.67m
Laptop
C2 on ESI
3m
H 80cm
A set of 3 power cords for a total length of 8.34m
21
Second configuration step 3
  • Active network connected to power mains of the
    building
  • C2 to receiver

Without communication
With communication
22
Second configuration U network (with PLC)
Mains
Laptop
2.67m
2.67m
Laptop
Clamp
3m
H 80cm
A set of 3 power cords for a total length of 8.34m
23
Second configuration immunity equipments
  • Immunity similar to
  • IEC 61000-4-4 Burst generator EM TEST UCS500
    capacitive clamp
  • IEC 61000-4-6 SMY generator amplifier EM
    clamp
  • 1st time 150kHz-80MHz with and without AM
  • 2nd time 4MHz-21MHz with and without AM
  • Powerlan 100 kit Topcom
  • 2 laptops on batteries

IEC 61000-4-4
IEC 61000-4-6
24
Second configuration Immunity (1)
  • Burst signals are applied after the ping
    communication is launched.
  • Burst during 15ms with a period of 300ms (as in
    IEC 61000-4-4)
  • Voltage level is increased progressively
  • Above a certain voltage level (580V) 50 of the
    pings are still received
  • related to the long period without burst

Non received packets ()
25
Second configuration Immunity (2)
  • Burst signals are applied after the ping
    communication is launched.
  • Burst during 15ms with a period of 15ms (as
    continuously present)
  • Voltage level is increased progressively
  • Above a certain voltage level (560V) on/off
    mode (off, reboot necessary)

100
Non received packets ()
0
400
560
1000
Injected level (V)
26
Second configuration Immunity (3)
  • Burst signals are applied after the beginning of
    a very big file sending.
  • Burst during 15ms with a period of 300ms
  • Voltage level is increased progressively
  • Above a certain voltage level (580V) the
    communication is down.
  • Burst during 15ms with a period of 15ms (as
    continuously present)
  • Voltage level is increased progressively
  • Above a certain voltage level (580V) the
    communication slows down,
  • then the PC is waiting indefinitely until the
    delay is over
  • and the transfer is interrupted.

27
Second configuration Immunity (4)
  • IEC 61000-4-6
  • limited to 4-21MHz (related to the used PLC
    band), step 500kHz, dwell time 5s (5 pings).
  • without AM 1kHz voltage level is increased
    progressively, the communication is
  • not disturbed or disturbed for a higher level
    (10-20V) than with AM.
  • with AM 1kHz voltage level is increased
    progressively (largely over 10V),
  • the communication is on, and then off (0-100
    mode).
  • the level needed to disturb is high because the
    OFDM modulation is secure.

Max. reachable level (limited by our amplifier)
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