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This Atlas is a comprehensive guide to energy efficient motors and drives, highlighting practical implementation issues based on field experience. Topics featured include DSM program design, adjustable-speed drives, cube-law loads, power quality, measuring motor performance, and maintenance and monitoring, as well as load types, motor sizing and selection, and motor repair. Motor efficiency is discussed in detail, along with several energy-saving designs and techniques. The resources section contains a bibliography, lists of motor and ASD manufacturers, a list of associations related to motors and drives throughout the U.S. and Canada, and a glossary.
- 1 Five basic concepts
- 1.1 Drivepower is huge
1.2 System boundaries
1.3 Start with the task
1.4 The leverage of downstream savings
1.5 Whole-system design
- 2 Market structure and standards
- 2.1 Motor manufacturers
2.2 Motor purchasers
2.3 Market events
2.4 Motor efficiency standards
- 3 End-use data and market penetration
- 3.1 Motor population and energy input by sector and end use
3.2 Penetration of energy efficient motors and ASDs
3.3 Duty factors
3.4 Load profiles
- 4 Strategies for drivepower programs
- 4.1 Equipment manufacturers
4.2 End users
4.3 Utility drivepower programs
4.4 Motor challenge programs
- 5 Motor-driven loads
- 5.1 Load types
5.2 System interactions
5.3 Fans and pumps: a special look
5.4 Cycling
5.5 Load profile and duty factor
- 6 Drivetrain and connection methods
- 6.1 Gears
6.2 Linear drives: Chain and belt couplings
6.3 Bearings
6.4 Alignment
6.5 Lubrication
- 7 Motor technology
- 7.1 How a motor works
7.2 Induction motors
7.3 Synchronous motors
7.4 Direct current motors
7.5 Other motor technologies
- 8 Induction motor efficiency
- 8.1 The economics of energy efficient versus standard efficiency motors
8.2 What are standard and energy efficient motors?
8.3 How to purchase energy efficient motors
8.4 What price efficiency?
8.5 Savings under varying load with energy efficient motors
8.6 Calculating savings from improved motor efficiency
8.7 How accurate are nameplate efficiency ratings?
8.8 Slip, starting current, torque, and service life in energy efficient motors
8.9 Motor losses
8.10 Efficiency test procedures and definitions
- 9 Motor sizing and selection
- 9.1 The widespread oversizing of induction motors
9.2 Consequences of motor oversizing
9.3 Replacing existing motors with smaller energy efficient motors
9.4 Replacing existing motors with same-sized energy efficient motors
9.5 Assessing motor performance in the field
9.6 Selecting the right motor
- 10 Motor repair
- 10.1 Repairing versus replacement
10.2 The anatomy of a motor rewind
10.3 Causes of performance degradation from motor rewinding
10.4 Consequences of performance degradation
10.5 Alternatives to burnout ovens
10.6 The potential for improved performance after rewinding
10.7 Measured impacts of rewinding on efficiency
10.8 Prevalence and nature of rewinding practice
10.9 Quality assurance in motor repair
- 11 ASDs and other induction motor controls
- 11.1 Why use controls?
11.2 Adjustable-speed drives
11.3 Adjustable-speed drives: a technology primer
11.4 Alternative methods for varying motor speed
11.5 Soft-start devices
11.6 Power factor controllers
11.7 "Fast controllers"
11.8 Load management controls
- 12 Motor system maintenance
- 12.1 Economic benefits
12.2 Installation methods
12.3 Conventional maintenance methods
12.4 Motor circuit analysis
12.5 Recordkeeping
- 13 Power quality
- 13.1 Power factor
13.2 Phase voltage unbalance
13.3 Harmonics
13.4 Transient power problems
- Appendices
- A: Glossary
B: Bibliography
C: Motor manufacturers
D: ASD manufacturers
E: Trade, professional, and governmental organizations related to motors and drives
TA-DP-99; October 1999; 347 pages
For more information on the E Source Technology Atlases, call 303-444-7788 or e-mail us at esource@esource.com.
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