Principles of Electric Drives     


I.D.# WB0941Printable Description
Duration: 8 Hours
  Delivered in
Show Session Dates
October 31-November 9, 2017 (4 Sessions ) - Live Online

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.

Learning Objectives
By participating in this web seminar, 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

Who Should Attend
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.

Topical Outline
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 RosebroJack 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.

Registration Information
Registration for this live web seminar is available on a per-person basis, similar to purchasing a seat in a classroom. Participants attend an online session from work or home; anywhere with a PC with internet access (at least 56K) and a telephone. The fee includes one connection to the conference calls (toll free telephone number provided for U.S. and select countries*) and assigned personal ID number; one connection to SAE's online training center (via WebEx); and access to a secure course in the SAE Learning Center that contains the presentations, class session recordings, supplemental materials, and assignments.

Registrations will be accepted until 5:00 p.m. the day before the start of the web seminar, but early registration is encouraged to allow for pre-course set-up and instructions.

*Global toll-free telephone numbers are provided for many countries outside the U.S., but are limited to those on the WebEx call-in toll-free number list. Check here to see if your country has a global call-in toll free telephone number for this web seminar. If your country is not listed, you may still connect using the US/Canada Call-in toll number or Voice over Internet Protocol (VoIP).

Although WebEx Training Manager will automatically launch when you join the web seminar, you or your system administrator are encouraged to download the plug-in in advance to help ensure successful setup. Click here, then follow the onscreen instructions.

NOTE: The course presentation will be recorded and made available for 30 days to those who register by the deadline.

Multiple Seat Discount - Does your company have a group of employees who need this course? Register one individual at the appropriate member or list price, then register additional employees at half off the list price. Registration by phone with SAE Customer Service is required to take advantage of this discount. Register all individuals at the same time or mention the confirmation number for the first registrant. The offer is good for only the same web seminar offering. All registrants will receive a personal account and opportunity for CEUs.

Can't attend on the date/time above? The presentation will be recorded and made available for 30 days to those who are registered, regardless of availability for the live session. If you still need to cancel, transfer to a future offering, or designate a substitute, a full refund is issued if you notify SAE at least 14 days prior to the web seminar start date. If less than 14 days prior, please contact SAE Customer Service to discuss options*. NOTE: SAE reserves the right to cancel web seminar and cannot be held responsible for related costs incurred by registrants other than the registration fee.

*Cancellation penalties may apply.

Fees: $640.00 ; SAE Members: $512.00 - $576.00

.8 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain 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.

To register, click Register button at the top of this page and submit the online form, or contact SAE Customer Service at 1-877-606-7323 (724/776-4970 outside the U.S. and Canada) or at