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Flywheels for Use in Uninterruptible Power Supply Systems

COURSE NO: E01-009
Flywheels for Use in Uninterruptible Power Supply Systems
Course Highlights

This online engineering PDH course describes flywheel technology, its variations, and installation requirements.  It addesses the market for flywheels, advice for choosing appropriate applications, and descriptions of the experiences of several users.  One application is highlighted as a case study, followed by an illustrative life-cycle cost comparison of batteries and flywheels.


In a flywheel, energy is stored by causing a disk or rotor to spin on its axis.  Advances in power electronics, magnetic bearings, and flywheel materials coupled with innovative integration of components have resulted in direct-current flywheel energy-storage systems that can be used as a substitute or supplement to batteries in uninterruptible power supply (UPS) systems. Although generally more expensive than batteries in terms of first cost, the longer life, simpler maintenance, and smaller footprint of the flywheel systems makes them attractive battery alternatives.


This 1 PDH online course is intended for mechanical and electrical engineers concerned with the design and maintenance of uninterruptible power supply (UPS) systems.
Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Understanding the flywheel potential alternative use in UPS systems
  • Understanding its advantages compared to batteries
  • Differentiating between low speed versus high speed flywheels
  • Learning about Improved UPS system reliability and reduced life-cycle costs
  • Familiarizing with examples of current successful flywheel use
Course Document
In this professional engineering CEU course, you need to review the course document titled, “Flywheels for Use in Uninterruptible Power Supply Systems” which is based on the DOE publication, “Flywheel Energy Storage,” a New Technology Demonstration Publication, DOE/EE-0286, part of the Federal Energy Management Program and produced by the Pacific Northwest National Laboratory, September, 2003.
To view, print and study the course document, please click on the following link(s):
Flywheels for Use in Uninterruptible Power Supply Systems Course (1.09 MB)
Course Quiz

Once you complete your course review, you need to take a multiple-choice quiz consisting of ten (10) questions to earn 1 PDH credit. The quiz will be based on this DOE publication.

The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you may print your Certificate of Completion after we receive your payment.) For your convenience, we will also email you your Certificate of Completion. Also, you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: