Description

With a rapid advancement of power switching devices and digital signal processing units, power electronics technology has found its way into many applications of renewable energy generation, transmission and consumption. Although power electronics systems are a key enabler as a cross-functional technology in the energy conversion process, their pulse energy conversion with inherent switching behavior exhibit disturbing harmonic emissions and electromagnetic noises. 

Recently, with the high penetration of power electronic systems and advent of new power semiconductor devices known as wide-band gap (WBG) the importance of understanding and preventing power converters switching disturbances have significantly elevated. The generated harmonic and noise disturbances can result in electromagnetic interference (EMI) and should be controlled within specific limits by applying proper filtering, topology and control scheme. Thereby, in order to prevent the power converters from disturbing their own operation and other nearby electronic devices they should design for electromagnetic compatibility (EMC).
The emphasis of this course is to give a complete and clear picture on EMI issues and mitigation methodologies. Systematic designing of passive EMI filters for differential mode (DM) and common mode (CM) noises in single-phase and three-phase systems will be provided. Printed circuit board (PCB) design criteria, passive and active components parasitic and shielding approaches in reducing near-field couplings will be covered as well. Furthermore, time and frequency domain modeling of conducted low and high frequency emission noises through developing equivalent circuit models of power electronics converters in order to reduce the analysis complexity and prevent from conventional trial and error design approach will be addressed. This course will also focus on new challenges within the new frequency band of 2-150 kHz in power electronic based power systems. The course content is combined with real-world application examples and demonstration.

In the first day the course will focus on basics of harmonics generated by switching, EMI issues in PWM converters, components parasitic, measurement requirement, interference mechanisms, filtering component and strategy. In the second day there will be more focus on advanced topics such as magnetic coupling, EMI prediction, Shielding and new standard requirements. The second day will be supported with industrial examples and real-world design experience regarding different aspects of EMI/EMC in power electronics.   

Find the detailed course program on PhD Moodle: https://phd.moodle.aau.dk/course/view.php?id=2178 

Prerequisites

This course is intended for intermediate and advanced researchers and engineers in the field of power electronics and its applications, for EMC specialists and advanced university students exploring new harmonics and EMI challenges in power electronics-based power system and WBG-based power electronic systems. General knowledge in power electronics converters operation modes, passive components and basic control theory are preferred. Course exercises and mini-projects will be performed on MATLAB/PLECS software platform. 

Pre-reading the shared materials:

• Power Electronics 
• Basic understanding of power electronics control 

Form of evaluation

The participants will work on mini-projects in the final 1-day lecture. The mini-projects are defined based on a real application design and will be assigned to group of four people. Groups will compare and deeply discuss their design method and choices and present their results in presentation form to the class. 

1. Mini-projects
2. Power point presentation 
    

Price

8000 DKK for the Industry and 6000 DKK for PhD students outside of Denmark (VAT-FREE Education)

The Danish universities have entered into an agreement that allows PhD students at a Danish university (except Copenhagen Business School) the opportunity to free of charge take a subject-specific course at another Danish university.
Read more here: https://phdcourses.dk/ 

Questions

hr@energy.aau.dk   

More information

https://www.energy.aau.dk/research/phd   

Course literature

• Basics in EMC and Power Quality_Schaffner [Page: 5 - 13] 
  H. W. OTT, "Electromagnetic Compatibility Engineering", Wiley, 2009. Chapter 1, pp. 1 – 33
• H. W. OTT, "Electromagnetic Compatibility Engineering", Wiley, 2009. Chapter 5. Passive Components, pp. 194 – 206
• M. Hartmann, H. Ertl and J. W. Kolar, "EMI Filter Design for a 1 MHz, 10 kW Three-phase/Level PWM Rectifier," in IEEE Transactions on Power Electronics, vol. 26, no. 4, pp. 1192-1204, April 2011.
• H. W. OTT, "Electromagnetic Compatibility Engineering", Wiley, 2009. Chapter 2. Cabling, pp. 44 – 68
• Tips and Tricks for Successful Power Designs, Texas Instrument
• M. Lobo Heldwein, “EMC Filtering of Three-Phase PWM Converters”, PhD Thesis, ETH, 2007.
• Keysight Application Note: “Making EMI Compliance Measurements”, 2015.
• P. Davari, E. Hoene, F. Zare, and F. Blaabjerg, “Improving 9-150 kHz EMI performance of single-phase PFC rectifier”, In Proc. of CIPS, 2018.
• R. W. Erickson, "Optimal single resistors damping of input filters," Applied Power Electronics Conference and Exposition, 1999. APEC '99. Fourteenth Annual, Dallas, TX, 1999, pp. 1073-1079 vol.2.
• K. Raggl, T. Nussbaumer and J. W. Kolar, "Model based optimization of EMC input filters," 2008 11th Workshop on Control and Modeling for Power Electronics, Zurich, 2008, pp. 1-6.
• P. T. Jensen and P. Davari, "Power Converter Impedance and Emission Characterization Below 150 kHz," 2021 IEEE International Joint EMC/SI/PI and EMC Europe Symposium, 2021.
• P. Davari and F. Blaabjerg, “Impedance Analysis of Single-Phase PFC Converter in the Frequency Range of 0-150 kHz”, IPEC 2022, ECCE-ASIA, 2022.
• F. Zare, H. Soltani, D. Kumar, P. Davari, H. A. M. Delpino and F. Blaabjerg, "Harmonic Emissions of Three-Phase Diode Rectifiers in Distribution Networks," IEEE Access, vol. 5, 2017.
• H. Soltani, P. Davari, F. Zare, and F. Blaabjerg, ”A review on the effects of dc-link filter on harmonic and interharmonic geenration in three-phase adjustable speed drive systems," in Proc. of ECCE, 2017. 
• Ganjavi, F. Zare, D. Kumar, A. M. Abbosh, K. S. Bialkowski and P. Davari, "Mathematical Model of Common-Mode Sources in Long-Cable-Fed Adjustable Speed Drives," in IEEE Transactions on Industry Applications, vol. 58, no. 2, pp. 2013-2028, March-April 2022
• S. Weber, S. Guttowski, E. Hoene, W. John and H. Reichl, "EMI coupling from automotive traction systems," 2003 IEEE International Symposium on Electromagnetic Compatibility, 2003. EMC '03., 2003.
• E. Hoene, A. Lissner, S. Weber, S. Guttowski, W. John and H. Reichl, "Simulating Electromagnetic Interactions in High Power Density Inverters," 2005 IEEE 36th Power Electronics Specialists Conference, 2005.