Biography:
Hamid A. Toliyat (S’87, M’91, SM’96, F’08) received the B.S, degree from Sharif University of Technology, Tehran, Iran in 1982, the M.S. degree from West Virginia University, Morgantown, WV in 1986, and the Ph.D. degree from University of Wisconsin-Madison, Madison, WI in 1991, all in electrical engineering. Following receipt of the Ph.D. degree, he joined the faculty of Ferdowsi University of Mashhad, Mashhad, Iran as an Assistant Professor of Electrical Engineering. In March 1994 he joined the Department of Electrical and Computer Engineering, Texas A&M University where he is currently Raytheon endowed professor of electrical engineering.
Dr. Toliyat has received the prestigious Cyrill Veinott Award in Electromechanical Energy Conversion from the IEEE Power Engineering Society in 2004, Patent and Innovation Award from Texas A&M University System Office of Technology Commercialization’s in 2007, TEES Faculty Fellow Award in 2006, distinguished Teaching Award in 2003, E.D. Brockett Professorship Award in 2002, Eugene Webb Faculty Fellow Award in 2000, and Texas A&M Select Young Investigator Award in 1999 from Texas A&M University. He has also received the Space Act Award from NASA in 1999, and the Schlumberger Foundation Technical Awards in 2001 and 2000.
Dr. Toliyat was an Editor of IEEE Transactions on Energy Conversion. He was Chair of the IEEE-IAS Industrial Power Conversion Systems Department of IEEE-IAS, and is a member of Sigma Xi. He is a fellow of the Power Engineering, Industrial Applications, Industrial Electronics, Power Electronics Societies of the IEEE, and the recipient of the 2008 Industrial Electronics Society Electric Machines Committee Second Best Paper Award, 1996 and 2006 IEEE Power Engineering Society Prize Paper Awards and 2006 IEEE Industry Applications Society Transactions Third Prize Paper Award. His main research interests and experience include analysis and design of electrical machines, variable speed drives for traction and propulsion applications, fault diagnosis of electric machinery, and sensorless variable speed drives. Prof. Toliyat has supervised more than 50 graduate students, published over 370 technical papers where over 110 papers are in IEEE Transactions, presented more than 80 invited lectures all over the world, and has 12 issued and pending US patents. He is the author of DSP-Based Electromechanical Motion Control, CRC Press, 2003, Co-Editor of Handbook of Electric Motors – 2nd Edition, Marcel Dekker, 2004, and Co-author of Electric Machines – Modeling, Condition Monitoring, and Fault Diagnosis, CRC Press, Florida, 2012.
He was the General Chair of the 2005 IEEE International Electric Machines and Drives Conference in San Antonio, Texas. Dr. Toliyat is a Professional Engineer in the State of Texas.

Abstract:
Although magnetic counterparts of the mechanical gears were first introduced in the early twentieth century, it was not until recently that they caught significant interest from the researchers in the field as a promising technology for various torque-demanding applications; specifically among which is the rapidly growing market of EVs and HEVs. While enjoying a high torque density upon use of high energy density permanent magnets, magnetic gears offer several advantages over mechanical gears: very low to no maintenance requirement, low noise operation, and inherent overload capability. This talk, first, brushes over different types of magnetic gears and then focuses on a particular type which has attracted attentions the most: concentric planetary gear. Its structure and modes of operation are presented and it is shown how Two-Dimensional (2D) and Three-Dimensional (3D) Finite Element Analysis (FEA) can be employed to analyse this magnetic device.

Biography:
Tsuyoshi Nomura received the B.S. and M.S. from the Department of Mechano-Informatics and Systems, Nagoya University, Japan, in 1995 and 1997, respectively, and the Ph.D. degree from Department of Aeronautics and Astronautics, Kyoto University, Japan, in 2008. He joined Toyota Central Research and Development Laboratories, Inc. in 1997. He has been engaged in research on numerical analysis of composite materials and topology optimization. Since 2011, he is on a research assignment at Toyota Research Institute of North America, Ann Arbor, Michigan.

Abstract:
Planar type inductors provide an opportunity to meet the size requirement, but improving efficiency, especially at elevated frequency, still needs great research efforts. Since AC winding loss (caused by proximity effect and skin effect) takes a significant portion in high frequency inductor loss, Litz wire structure windings are being investigated. In 2005, PCB type Litz wire windings for planar inductors was proposed, in which the analysis was focused on single board structure. However, inductors in automotive applications require multiple winding layers, but so far there is no published work addressing planar Litz wire stacking and its effect to Litz wire performance. This paper will discuss the multiple winding layers stacking effect, i.e. proximity effect between layers, and how it affects the optimization of the Litz wire strand width and pitch. The analysis is based on FEM with periodic boundary condition in order to model stacking configuration with available computational resources.

Biography:
Kayoko Seto received the B.S. and M.S. degree from the Department of Electrical and Electronic Engineering, Kobe University, Japan, in 2007 and 2009 respectively.
She has been an engineer at Toyota Motor Corporation since 2009. She has been engaged in the developing of automotive custom ICs and its applications such as a brake system, etc. She is now with Toyota Research Institute of North America, Ann Arbor, Mi.

Abstract:
Reducing an inductor loss is important for automotive power electronics systems. Many efforts on inductor structure designs depend on experiences and prototypings. This process takes time and cost, and an accurate simulation can make the process more efficient. In this paper, a design method of planer type inductors for high current and high frequency applications is introduced. Wire-loss is a time-consuming simulation and difficult to understand phenomena of loss such as eddy current loss, skineffect, etc. Individual loss measurements and core loss and wire loss fittings considering these phenomena meke an accurate inductor design available.

Biography:
John Suriano received a bachelor’s degree in Electrical Engineering from GMI Engineering & Management Institute in 1985. He received a master’s and PhD degrees in Electrical Engineering from Purdue University in 1986 and 1992 respectively. John has been involved in the design and analysis of electric motors for the automotive industry for more than 1/4 century. Presently he is the supervisor of the electromagnetic compatibility laboratory for Nidec Motors & Actuators in Auburn Hills, MI.

Abstract:
Similar to the well known deep bar effect in AC induction motors, the winidngs of permanent magnet AC machines experience an increase in effective resistance as the frequency of excitation current from the winding increases. The field produced by the winding forces current toward the open end of the stator slot leading to non-uniform current density in the coils. The effect is caused by flux which leaks across the slot only partially linking the coils. Ignorance of this effect can lead to poor stator winding design and a loss of efficiency from the machine. This presentation uses JMAG to illustrate this effect and to compare various winding designs. Test results are also used to bolster the conclusions.

Biography:
Nick Keel is the NI VeriStand Product Manager at National Instruments. He works extensively with real-time testing and hardware-in-the-loop applications. Prior to working at National Instruments, he spent 6 years in the United States Navy working as a nuclear reactor operator on a submarine. He has worked for National Instruments for about 4 years, and he has a BSEE from The University of Wisconsin.

Abstract:
The role of electric motors in the automotive and energy industries is expanding. Testing embedded software for electric motor ECUs introduces new challenges, such as increased simulation speed and model fidelity, that cannot be addressed by traditional HIL testing methods. Learn about how National Instruments and JMAG have partnered together to address these new challenges by creating an industry leading electric motor simulation platform for hardware-in-the-loop testing.

Biography:
Jonathan Bird, obtained his B.S from the University of Auckland in 2000 and his M.S. and Ph.D. from the University of Wisconsin-Madison in 2004 and 2006 respectively. From 2006 to 2008 he was a senior design engineer at General Motors Advanced Technology Center in Torrance, CA. Since 2009 he has been an Assistant Professor at the University of North Carolina at Charlotte. His research interests are in the areas of electric machine design, electromagnetics and control.

Abstract:
A magnetic gearbox offers many advantages over its mechanical counterpart such as contact free torque production, no gear lubrication and inherent overload protection. Current magnetic gear designs use rare-earth magnet material. Unfortunately, for the foreseeable future, devices using large quantities of rare-earth material are not going to be cost competitive with existing gear technology. This paper investigates the performance of low cost flux focusing magnetic gears using ferrite magnets. Parameter optimizing as well as the influence of eddy current loss and demagnetization issues will be studied using JMAG.

Biography:
Andy. Knight received the Ph.D. degree in Electrical Engineering from the University of Cambridge, U.K., in 1998. In 1999, he joined the University of Alberta, where he is currently a Professor with the Department of Electrical and Computer Engineering. His research interests include energy conversion and storage, particularly renewable energy and electrical machines and drives; practical aspects of analysis and design of electric machines; modeling of nonlinear electromagnetic systems and losses in those systems. Dr. Knight is a recipient of the IEEE PES Prize Paper Award and three prize papers from the IEEE IAS

Abstract:
Brushless doubly fed machines are a class of machine that has existed for over 100 years. At various points in this history, researchers have published results that indicate the potential benefits of this type of machine relative to other more common machines. However, consistently good designs are hard to find and there are several examples of poor designs in the literature. Some of the reasons for this include the difficulty in modelling the complex interaction of the magnetic fields produced by two stator windings with different pole numbers and the difficulty in accurately predicting iron losses. In the talk, the results of a systematic design approach using JMAG will be presented. The importance of nonlinear modeling to accurately predict mutual coupling between windings and leakage will be presented, together with structural analysis of the rotor design.