EMC research at the University of Twente

Transcription

1 EMC research at the University of Twente Prof.dr.ir. Frank Leferink Chair EMC 1

2 Studies: Interference via power supply onboard naval vessels Shielding of composite structures Coupling between antennas onboard naval vessels. 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: small radar SMART-L ELR: 1344 transmit-receive elements, many power interfaces, mast is kast principle 2

3 EMC group at University of Twente Frank Leferink (also acting chair TE) (1 day/week, other: THALES) Frits Buesink (4 days/week) Projects IOP-EMVT MOPE (EMI and power drive systems), Dr. Dongsheng Zhao (afstudeerder UT), TU Delft, Nu EMC NMi Anne Roc h, promotie 12 oktober Nu EMC expert ASML THALES: Lightning w.r.t. composite structures, Alex Blaj, proefschrift afronding, now Hitec, UPS systems IOP-EMVT Power Quality & EMC, Roelof Timens IOP-EMVT Embedded Passives, Olga Tereshchenko FP7 EU: High Intensity Radiated Fields, Robert Vogt-Ardatjew Maritime Innovation, Bart van Leersum KP7 EU: Protection of Civil Infrastructures against EM Attack, Stefan van de Beek KP7 EU: Protection of Civil Infrastructures against EM Attack, Roelof Timens Visiting researchers: Fatou Diouf (France), Ahmed Wefky (Spain) M.Sc. Students, now: Pieter van Vugt, Laura Stoilescu 3

4 Power Electronics Many good results, best paper awards Chapter in an ebook (2012) Journal paper (2012) Defense thesis 12 October 2012 Now EMC specialist at ASML 4 4

5 PDS, radiated emission Electric field strength [dbmv/m] unshielded cable shielded cable + dv/dt + CMC+C Civil require ments Frequency [MHz] 5

6 UT, effects of lightning Nice results Example: Patent bearing Now thesis writing with pre-loading without pre-loading 6 6

7 UT, PQ&EMC Power Quality & EMC Develop models to predict interaction between modern electronic 400 equipment connected via the mains supply Cases: Carre building, high THD PV and PDS farm PV causing overvoltage Damage in windmill generator Status: 7 nov 2013 defence Transients, non linear effects Pieter van Vugt assists in behavioural models Writing thesis Voltage (V) Voltage (V) Time (s) Vhf[PE-N] Time (seconds) x

8 Embedded Materials New materials to reduce EMI EBG for reducing PDN (power distribution noise) signal integrity & EMI: 8 8

9 UT, HIRF-SE High-Intensity Radiated Fields, Synthetic Environment (HIRF-SE) Develop simulation techniques for EM fields in reflecting environments Jan Dec Received Voltage [dbuv] s stirring, pk 1s stirring, RMS 1s stirring, Av Frequency [MHz] 9 9

10 UT, Maritieme Innovation Concept of de mast is de kast for the whole ship Period: 1 jan dec

11 UT, Structures Strategies for the Improvement of Critical Infrastructure Resilience to Electromagnetic attacks 1 July Aug

12 UT, EMRP JRP-i10: Improved EMC Test Methods in Industrial Environments, from laboratory to industrial environment 1 July July 2017 WP1: Conducted emission WP2: Conducted immunity/susceptibility WP3: Radiated emission WP4: Radiated immunity/susceptibility WP5: EMC reference devices for round-robin tests WP6: Impact 12 12