MOPE Multi domain Optimization of Power Electronics

Transcription

1 MOPE Multi domain Optimization of Power Electronics Anne Roc h University of Twente, Enschede Prof. Frank Leferink University of Twente, Enschede Thales Nederland, Hengelo What I am doing now End 2005 to now: PhD in University of Twente, Frank Leferink EMC and Power Electronic From : Post-doc position (KWR) in University of Eindhoven / ASML Anton Tijhuis and Martijn Van Beurden Maxwell Solvers for Computational Lithography 1

2 Objectives of the project Focus on an inverter and machine combinations as used in drives and mechatronic applications Objectives: EMI modelling, simulation and validation Modelling environment and components Derive designable parameters and thus design rules Required outputs are models which can be used by the design engineers to simulate EMI Overview of the work Circulation of the common mode current in a motor drive Radiated Emission due to common mode current Common Mode Choke Y capacitors Frequency converter LOAD Asymmetric Filter CM current Ground plane Stray Capacitance EMI filter behavioral model EM environment model Designable parameters of of the system common cable mode + filter motor Output common currents mode of the voltage drive EMI EM Filter Environment Behavioral Model Expected Input cable current impedance attenuations Expected Max E-field Sensitivity of of the the designable parameters Deviation of the calculated attenuation levels 2

3 Some aspects on the CMC model Impedances of the CMC Z cm Z dm Intra Winding Capacitance And Turn to Turn Capacitance Designable parameters Material (complex permeability) Dimension of the choke Number of turns Effective length Number of turns Dimensions of the choke Angle of leakage inductance Number of turns Dimensions of the choke Wire dimensions and material of isolation and diameter) Length of turns Equivalent circuits validation Some aspects on the CMC model Material aspects Frequency vs. permeability Saturation vs. permeability. Equivalent circuits and attenuation coefficients ( i1 i2) Att cm *( ia ib ) Za Att cm ( Za Zcm ) ( i1 i2) Att dm *( ia ib ) Zm Att dm ( Z3 Zdm) 3

4 Some aspects on the CMC model Attenuation coefficients CM DM Impedances involved in the common mode attenuation Impedances involved in the differential mode attenuation Common mode attenuation coefficients with variable impedance to ground Differential mode attenuation coefficients with variable input cable impedance Setup for the EMI filter model validation Schematic of EMI filter, boost converter and load EMI toolkit picture This work is based on the EMI toolkit project, supported by the European Commission under the ASEAN-EU UNIVERSITY NETWORK PROGRAMME Assoc. Prof. Dr. Werachet Khan-ngern, Mr. Vuttipon Tarateeraseth 4

5 Setup for the EMI filter model validation Current measurements Setup for the EMI filter model validation Impedance measurements 5

6 Validation of the CMC model Impedance measurements Current measurements Overall EMI filter model (Only CMC) CMC with its parasitic capacitance to ground Complete CM equivalent circuit of the filter with a CMC, the load and its cable Input common mode impedance of the load, its cable and common mode choke 4 6

7 Some aspects of the EM environment model Circulation of the common mode current in a motor drive Frequency converter Common Mode Choke Y capacitors Radiated Emission due to common mode current LOAD CM current Stray Capacitance Designable parameters: Length of the cable Height of the cable Type of cable Ground configuration Motor dimensions Asymmetric Filter Ground plane EM environment model Common mode noise source V + EMI filter(s) Icm Z cabling + load EMI receiver EMI receiver input EMI receiver generator Current probe Variable cable length Variable Zload EMF noise and the cabling + load impedance Variable ground configuration Measurements test set-up Equivalence with antenna impedance? Some aspects of the EM environment model Wire over a uniform ground plane, length 3m, effect of the height, capacitance 2.2nf 7

8 Some aspects of the EM environment model Some aspects of the EM environment model Input common mode current of the cable Level of E-Field at 3m of the test set-up Input impedance of the system cable + motor Input impedance of a wire 8

9 Some results Industrial collaboration with Thales NL and Exendis BV Overall publications : 15 conference papers (10) 1 popular publication in Elektronica 2 articles (more to come) 1 book chapter Awards Third Best Student Paper Award in the International Zurich Symposium on EMC, 2007 in Munich Best Student Paper Award in the International Asia-Pacific Symposium on EMC, 2008 in Singapore Young Scientist Award in the URSI General Assembly, 2008, in Chicago Dank u! Vragen? 9