I.D.# PD330941ON
Access Period: 30 Days
Duration: 8 Hours

Electric drives are found in hybrid, plug-in hybrid, and hydrogen fuel cell vehicles, as well as battery electric vehicles. More than two million hybrid vehicles worldwide utilize electric drive components, and battery technology has matured enough to enable major manufacturers to develop light-duty and commercial electric vehicles for mass production and sale beginning in 2010-2012. It is also likely that many conventional vehicles will incorporate some form of idle-stop or stop-start system comprised of a low-output electric drive, as an integral part of efforts to meet U.S. CAFE fuel economy standards and EU CO2 emission requirements.

Industry professionals who are looking for a general understanding of the structure and components of vehicular electric drives will benefit from this course, which will cover theory, design, operation, and diagnostics of all major components used in electric drives (battery packs, inverters, motor-generators, DC-DC converters, and charging apparatus) as applied to all forms of vehicles, including charge-sustaining hybrids, plug-in hybrids, fuel cell hybrids, and battery electric vehicles. Battery chemistry, charging systems, power conversion, switching techniques, and traction motor construction will be discussed in detail.

Is this Web Seminar RePlay for You?

Powertrain engineers, electrical engineers, project planners, project managers, technical writers, safety officers, component specialists, component suppliers, and anyone else who is professionally impacted by the development of electric vehicle technology will be able to use this information to help them transition to working with electric drives. Participants should have a basic knowledge of electric circuits. This is an introductory course; a mechanical or electrical engineering degree is helpful but not necessary.

Have colleagues who need this course? See Special Offers to the right.

Click on the Requirements tab to make sure you are properly equipped to interact with this course.

0.8 CEUs


"Well done. I very much like the capability to download workbooks and recording for use offline (e.g. at the airport). Jack Rosebro has excellent background and insight into electric drive technology and takes great care to answer questions thoroughly."
Kevin Walsh
Staff Engineer
Fisker Automotive Inc.

"Very knowledgeable of the subject and very up to date."
John B. Molesa
Sales Engineer
ebm-papst Automotive & Drives, Inc.


By participating in this course, you will be able to:

  • Explain the design, function, and interactions of all major components of a typical electric vehicle powertrain
  • Describe the operation, attributes, and behavior of battery packs, inverters, motor-generators, on-board and off-board charging systems, and DC-DC converters across all ranges of performance
  • Identify the different design configurations and requirements of electric drives in hybrids, plug-in hybrids, fuel cell hybrids, and battery electric vehicles
  • Classify different types of battery packs, inverters, motors, and DC-DC converters
  • Analyze the design and construction of a given electric powertrain, and evaluate its particular attributes and drawbacks
  • Assess fault detection and protection strategies and circuits as well as on-board diagnostic requirements
  • Appraise technical limitations of electric drive components, as well as design and technological trends that may address such limitations


Session 1
Battery Packs, Capacitors, and Energy Management

  • Calculating Onboard Energy Storage Needs
  • Battery Chemistries and Lithium-Ion Sub-Chemistries
  • Electrolytic Double Layer Capacitors
  • Combination Systems (Hybrid Battery-Capacitor Systems)
  • Battery Pack Performance
  • Integrating an Energy Storage System into the Chassis
  • System Relays and Power-on Sequences
  • Battery Management Systems and Communication with the CAN Bus
  • Thermal Management Systems and Considerations
  • System Degradation
  • Onboard Charging Strategies
  • Failure and Diagnostic Modes
  • Recycling and Recovery of Battery Cell Material
Session 2
External Charge-Discharge Systems and DC-DC Converters
  • Charging Systems for Electric Vehicles
  • Inductive and Conductive Charging
  • Charger-to-Vehicle Communication
  • Power Supply Considerations
  • Vehicle-to-Grid Systems
  • Switching Power Supplies and DC-DC Converters
  • Packing and Thermal Management of DC-DC Converters
  • Failure and Diagnostic Modes
  • Power Requirements of Drive-By-Wire Systems
Session 3
Inverters and Fundamentals of Power Electronics
  • Power Transistors And Switching Operation
  • Basic Motor Control
  • Producing AC Waves from a DC Supply
  • Capacitors in Inverters
  • Pulse-Width Modulation
  • PWM Inefficiencies
  • Overmodulation and Six-Step Control
  • Space-Vector Modulation
  • Boost Converters
  • Thermal Management of Inverters
  • Circuit Protection
  • Failure and Diagnostic Modes
  • Upcoming Power Electronics Developments and Enhancements
Session 4
Synchronous and Asynchronous Motor-Generators
  • Flux Linkages and Rotating Magnetic Fields
  • Rotor and Stator Construction
  • Torque Production, Motor-Generator Types
    • Permanent-Magnet
    • Induction
    • Reluctance
    • Enhanced Lundell Motor-Generators
  • Operation in Motor, Generator, and High-Speed Modes
  • Field-Weakening
  • Choosing a Motor-Generator, Thermal Management of Motor-Generators
  • EMF Considerations
  • Failure Modes and Diagnostic Strategies

Instructor(s): Jack Rosebro

Jack Rosebro has taught hybrid, plug-in hybrid, and electric vehicle technology to a wide variety of automotive industry professionals for the past ten years. Since 2006, he has developed and delivered curriculum for Perfect Sky, Inc. throughout the US and Canada. He also consults to community colleges that are integrating hybrid and electric vehicle technology into their curricula. Jack writes about hybrid technology, regulatory issues, and sustainable mobility for Green Car Congress, and is a frequent speaker at industry conferences. Previously, Jack developed and taught courses on hybrid and electric vehicles, air/fuel systems, OBD-II self-diagnostic systems, and emission control systems. He received his M.Sc. in Engineering from Blekinge Institute of Technology in Sweden.

Materials Provided

  • 30 days of online single-user access (from date of purchase) to the four session, approximately eight hour, recorded presentation
  • Course workbook (downloadable, .pdf's)
  • Online learning assessment
  • Instructor follow up to your content questions
  • .8 CEUs* (with satisfactory assessment score)
*SAE International is authorized by IACET to offer CEUs for this course.

About RePlays

SAE Web Seminar RePlays are audio/visual captures of live web seminars. The course sessions are unedited to include the results of interactions with the live participants and to expedite course availability. A learning assessment is available at the end of the course to reinforce learning and retention and gauge your understanding of the topic.

Equipment Requirements

  • Windows 7, 8 (Apple OSX and Unix/Linux are not supported but may work)
  • Pentium 4 PC
  • Minimum 512 MB RAM; recommended 1 GB RAM
  • Internet Explorer 10-11, Mozilla Firefox 37 , Google Chrome 42 (Safari and Opera are not supported)
  • Broadband-1Mbps minimum

Full Course
Members save up to 20% off list price.
Have colleagues who need this course? Purchase access for one individual at the appropriate member or list price, then purchase access for additional employees at 50% off the list price. Contact SAE Customer Service to arrange online access for all individuals at the same time or mention the confirmation number for the first purchase. The offer is good for only the same web seminar replay. All participants will receive a personal account and opportunity for CEUs.
Email CustomerService@sae.org, or call 1-877-606-7323 (U.S. and Canada) or 724-776-4970 (outside US and Canada).
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