EALS/Institute/Team
© Lunghammer / TU Graz

Univ.-Prof. Dr.-Ing.

Annette Mütze

Inffeldgasse 18/1
A-8010 Graz
Tel.: +43 316 873 - 7240
Email: muetzenoSpam@tugraz.at


EDUCATION

04.2000-01.2004. Technical University of Darmstadt. PhD Studies. Title of Thesis: “Bearing Currents in Inverter-Fed AC Motors”. Mark: summa cum laude (highest grade)
Coordinated double-degree program: Ingénieur Générale and Dipl.-Ing. Degrees
09.1995-07.1999 Ecole Centrale de Lyon, France, General Engineering (best of a class of 300 students)
09.1993-07.1999 Technical University Darmstadt, Germany, Electric Engineering

POSITIONS

Since 04.2010. Graz University of Technology, Austria – Univ.-Prof. Research and teaching in the area of Electric Drives and Machines. Supervision of Bachelor-, Master- and PhD Theses. Head of Electric Drives and Machines Institute.
01.2007 – 03.2010. University of Warwick, School of Engineering, UK – Associate Professor, Assistant Professor (until Sep 08) Research and teaching in the area of Electric Drives and Machines. Supervision of Bachelor, Master and PhD Theses.
05.2004 – 12.2007. University of Wisconsin-Madison, USA, on leave Jan 07 - Dec 07 – Assistant Professor (until Sep 08) Research and teaching in the area of Electric Drives and Machines. Supervision of Bachelor-, Master- and PhD Theses.
04.2000 – 04.2004 (Project Ass.) .Technical University of Darmstadt, Germany – Research Assistant. Research and teaching in the area of Electric Drives and Machines. Supervision of Master Theses. 
1993 – 1999 In total 14 months of industrial placements (in Germany, France, USA) 

RESEARCH INTERESTS

My research interests are in the field of electric drives and machines. Most of the research questions I have addressed are of the interdisciplinary character, bridging the gaps between electric engineering, material sciences, maths, and systems engineering. I thereby increase the reliability, efficiency, and utilization of variable speed drive systems by addressing the interaction between the different components of the system. For example, my work on inverter-induced bearing currents laid the solid theoretical foundations and combined these with practical evaluation methods that can today be found in the presentations of many drive manufacturers. My pioneering work on the influence of the manufacturing process on steel performance is cited in almost every publication on this topic. It also sets the stage for the experimental analyses of this project that bridge the gaps towards electric engineering applications. My work with fractional horsepower drives has translated in an integrated auxiliary fan drive that is sold to the automotive quantity in great quantities, as well as new control approaches and drive topologies that are in the evaluation phase for mass production.

10 MOST RELEVANT ACADEMIC PUBLICATIONS

A. Muetze and A. Binder. ‘Calculation of circulating bearing currents in machines of inverter based drive systems’. In: IEEE Transactions on Industrial Electronics 54.2 (2007), pp. 932-938. issn: 0278-0046. doi: 10.1109/TIE.2007.892001 
A. Muetze, J. Tamminen, and J. Ahola. ‘Influence of motor operating parameters on discharge bearing current activity’. In: IEEE Transactions on Industry Applications 47.4 (2011), pp. 1767- 1777. issn: 0093-9994. doi: 10.1109/TIA.2011.2154353 
A. Muetze and C. R. Sullivan. ‘Simplified design of common-mode chokes for reduction of motor ground currents in inverter drives’. In: IEEE Transactions on Industry Applications 47.6 (2011), pp. 2570-2577. issn: 0093-9994. doi: 10.1109/TIA.2011.2170101 
M. Bali, H. De Gersem, and A. Muetze. ‘Determination of original nondegraded and fully degraded magnetic properties of material subjected to mechanical cutting’. In: IEEE Transactions on Industry Applications 52.3 (2016), pp. 2297-2305. issn: 0093-9994. doi: 10.1109/TIA.2016.2532288 
M. Bali and A. Muetze. ‘The degradation depth of non-grain oriented electric steel sheets of electric machines due to mechanical and laser cutting: a state-of-the-art review’. In: IEEE Transactions on Industry Applications 55.1 (2019), pp. 366-375. issn: 0093-9994. doi: 10.1109/TIA.2018.2868033 
S. Leitner, H. Gruebler and A. Muetze. ‘Innovative Low-Cost Sub-Fractional HP BLDC Claw-Pole Machine Design for Fan Applications’. In: IEEE Transactions on Industry Applications 55.3 (2019), pp. 2558-2568. issn: 0093-9994. doi: 10.1109/tia.2019.2892023 
T. Holzer et al. ‘Generator design possibilities for full-size converter operation of large pumped storage power plants’. In: IEEE Transactions on Industry Applications 56.4 (2020), pp. 3644-3655. issn: 0093-9994. doi: 10.1109/TIA.2020.2989074
F. Krall, H. Gruebler and A. Muetze, ‘Analysis of the angle modulated switching strategy for use with fractional horse power BLDC motors’. In: IEEE Transactions on Power Electronics, 36.5 (2021), pp. 5460-5472, doi: 10.1109/TPEL.2020.3028604.
H. T. Eickhoff, R. Seebacher and A. Muetze, ‘Space harmonics and saturation interaction in fault-tolerant induction machine drives due to a zero-sequence stator current’. In: IEEE Transactions on Industry Applications, 57.5 (2021), pp. 4958-4969, doi: 10.1109/TIA.2021.3095833.
C. Mellak, J. Deuringer and A. Muetze, ‘Impact of aspect ratios of solid rotor, large air gap induction motors on run-up time and energy input,’ in IEEE Transactions on Industry Applications, 58.5 (2022), pp. 6045-6056. doi: 10.1109/TIA.2022.3180030.

SELECTED FUNDED PROJECTS

04.2016-03.2023 Christian Doppler Laboratory for Brushless Drives for Pump and Fan Applications. Sponsor: Christian Doppler Society. Partner: Mechatronic Systems GmbH. Applicant and project leader
03.2022-02.2026 Spezialforschungsbereich Computational Electric Machine Laboratory. Sponsor: FWF. Applicant and project leader

AWARDS 

2020    6th Nagamori Award
2019    IEEE Industry Application Society Prize Paper Award 2019 – First Price (international, one of the most important international journals in the field of electric engineering; judged to be the best out of 720 papers published in this prestigious journal)
2018-19 Visiting Professor, Technische Universität Darmstadt, Germany (“KI²VA” program: Competence Development through Interdisciplinary and International Cooperation from the Start)
2016    Fellow, IEEE 
2016    IEEE Industry Applications Magazine Best Paper Award 2016 – Second Prize (international, one of the most important international journals in the field of electric engineering, with a special focus on the unique needs of industry and commerce).
2005    National Science Foundation CAREER Award (national, USA; highest honour bestowed by the US Government on science and engineering professionals in the early stages of their independent research careers).
2004    FAG Kugelfischer Corporation Innovation Award (national, Germany), one of the most prestigious awards of a technical foundation.