The ITEC 2021 Organizing Committee has a great team of highly invested individuals that have built a program that aims to address the wide scope of challenges to sustainable transportation. ITEC’s program endeavors to provide attendees first with a broad view of transportation infrastructure from an administration level, to then lead them through the individual components of the sustainable transportation industry.


Industry SESSIONs:


Simulation-based Approach to Battery Development

Presented By: Waldemar LinaresManager, Simulation Technologies, AVL

Batteries are the key differentiator between the various xEV manufacturers. Adoption of virtual development has become crucial in overcoming the challenges associated with battery-powered systems. Understanding and optimizing performance, efficiency, hazard prevention and lifetime of a battery in a virtual environment is key to increasing the quality of new vehicle development. During this presentation Dr. Waldemar Linares will show how AVL’s Virtual Battery Development approach is used to overcome the most challenging tasks such as, cell modelling, fast charging, aging and cooling and thermal runaway event.


GMW Associates
1. Clip-on and Clamp-on Current Probes with Analog Signal Output for Test Stand and In-Vehicle Current Monitoring

Presented by: Ian J. Walker Senior Applications Engineer, GMW Associates,

GMW Clip-on and Clamp-on “Coreless” Current Probes are available with apertures of 27mm, 77mm and 160mm, full-scale current ranges from +/-250A to +/-16kA, and frequency response from dc to 75kHz. They are small cross-section, light-weight, moisture, ice and vibration resistant with an operating temperature range of -40C to +100C. They have no magnetic core eliminating magnetic hysteresis and ringing artifacts. During a primary current overload the output signal electrically limits with the correct sign and then outputs the correct signal within 10us of the current recovering within the Probe nominal current range. The Probes are undamaged by any current overload for any period of time. The Signal and Power Cable disconnects from the Probe enabling it to be threaded through a small aperture in a firewall or protection barrier to the monitoring Data Logger or Scope.


2. Current Measurement for Electric Vehicle Charger Test

Presented by: Ben HartzellVP Marketing,

GMW will provide a brief overview of test instrumentation for current control and metering in vehicle battery and charting systems. We will compare and contrast:

* Fluxgate-based DC/AC current transduceres for high accuracy and resolution measurements;

* Clip-around Rogowski coils with matching analog integrator for ac current measurements from a few Hz to 50Mhz, and can be optimized for accuracy and resolution at a specific frequency;

* Light weight clip-on and clamp-on DC/AC probes suitable for in vehicle tests, both in motion and in climate test chambers;

* 3-component magnetic field probe for measurement and mapping wireless Inductive Power Transfer systems.



Measurement of Torque Ripple in Electric Machines

Presented by: Mitchell MarksHBK
Many engineers have become accustomed to looking at torque as a static value for efficiency purposes, but torque often has a significant frequency component that is important for durability, noise, vibration, and machine control. Torque ripple is often not considered or measured because it is a difficult measurement to make. Torque ripple requires high bandwidth and high accuracy sensors, a capable test rig, and measurement systems capable of acquiring the signals at a sufficient bandwidth and accuracy. While these might sound trivial most sensors and systems are not capable of making these measurements. This session will give a brief introduction to torque ripple and its sources, measurement considerations, analysis, and implication of dynamic torque.


1. High-Fidelity Motor Modeling for HIL with FPGAs

Presented by: Jan Van Sickel – Application Engineer, Mathworks

Real-time capabilities are drastically increasing what testing can be done for electric powertrains. Important physical effects such as spatial harmonics and high-speed switching of wide bandgap devices can be achieved in the same model. Additionally, you can run these models in parallel with virtual vehicles. This allows you to connect the device under test (DUT), the motor controller in this example, with a virtual or real ECU for expansive test coverage. You can also use these same techniques to implement virtual dynamometers if ECU integration is unnecessary. See how the approaches presented are hardware agnostic and can often take advantage of existing lab equipment.

Joel Van Sickel is an application engineer at MathWorks who focuses on electrical simulation and control.  He specializes in power electronics and power systems.  He worked at Raytheon for five years designing power supplies for radar systems before coming to MathWorks.  Prior to working for Raytheon, he received his Ph.D. in electrical engineering from the Pennsylvania State University for work on distributed control of power systems in 2010.


2. Fuel Cell Virtual Vehicle Models for Fuel Economy, Performance, and Thermal Analysis

Presented by: Yifeng Tang – Application Engineer, Mathworks

Learn about recent advances in modeling fuel cell systems for automotive applications. Explore how to use simulation for fuel-economy study, controller design, thermal analysis, and component selection integrated into a complex, multidomain fuel cell virtual vehicle model that includes:

· A polyelectrolyte membrane (PEM) fuel cell stack with fundamental electrochemical reactions, H2 and air handling systems, and a thermal management system
· An electric powertrain system with a battery, DC/DC converter, and power distribution unit (PDU)
· Supervisory controllers
· Multiple drive-cycle scenarios

Yifeng Tang is an application engineer at MathWorks. He supports MathWorks’ tools for multi-domain physical modeling and specializes in the modeling and simulation of mechanical, thermal and fluid systems, such as hydraulic systems, cooling systems, and fuel cells. Prior to joining MathWorks, he worked for Ford Motor Company in the powertrain research department. Yifeng earned his Ph.D. in mechanical engineering from the University of Michigan and a B.S.E. in mechanical engineering from the University of Michigan and Shanghai Jiao Tong University.


Model-based design of cascaded speed and current controls for a 6-phase PMSM 

Presented by: Dr. Sisi ZhaoApplication Engineer, Plexim
Multi-phase Permanent Magnet Synchronous Machines (PMSM) are used for high performance drive systems like electric vehicles (EV). They offer increased power capability and reliability over their three-phase counterparts. This technical session introduces a workflow for the model based design of the controls for a dual-star PMSM with two inverters attached to different energy sources. The complete system is deployed using a TI embedded target for the controls and a virtual plant model running on the RT Box real-time simulation platform.


Marsilli Distributed High Density Winding Technology for electric motors: Our “out of the box” solution beyond the current technologies

Mr. Kumar Rajasekhara, President & CEO of Marsilli North America branch will present for the first time to the US market, the Distributed High Density technology, a brand new patented winding solution for electric machines developed by Marsilli.

The speech underlines the motor producers’ requests for a new solution able to overpass the limits of the insertion and the hairpin technologies and how Marsilli faced the challenge.

A 2-year journey made by Marsilli R&D department, from the first analysis and benchmark of the existing technologies to the realization of the first in-house prototype, to the final validation of the results of a third motor design party.

The results will be presented using multimedia infographic elements to visualize the encompassing level of power density and efficiency reached by this technology matching perfectly with the new trend in motor design: smaller and faster motors.

The DHD solution that is still in the development phase will hit the market next year and will be the perfect choice for different applications in various industries.

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