Publication Date: May, 2005
Discount Price: $24.50 (Cdn)
Discount Price: $20.50 (U.S.)
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VARIABLE SPEED DRIVE TECHNOLOGY HANDBOOK
Variable speed drive technology is a term applied to the technology used to control the speed of machinery. Variable speed drives are also known as adjustible speed drives (ASD).
Industrial machinery is often driven by electric motors that have provisions for speed adjustment. Such motors are simply larger, more powerful versions of those driving familiar appliances such as food blenders or electric drills. These motors normally operate at a fixed speed. If speed control is required that controller is called an adjustable speed drive. Adjustable speed drives are used in a wide variety of industrial applications. They are used in the larger industrial versions of the food blenders and power tools mentioned. Adjustable speed drives are often used with fans to provide adjustable airflow in large heating and air conditioning systems. The flow of water and chemicals in industrial processes is often controlled by adjusting the speed of pumps.
An variable speed drive might consist of an electric motor and controller that is used to adjust the motor's operating speed. The combination of a constant-speed motor and a steplessly adjustable mechanical speed-changing device might also be called an adjustable speed drive.
This technical handbook is an invaluable resource on the maintenance and usage of VFDs, their characteristics in commercial and industrial applications and the issues surrounding feeder cables and motors when applied to VFD systems.
CONTENT:
- Variable Frequency Drive Technology Basics
- Frequently Asked Questions About Adjustable Speed Drives
- Harmonic Distortion Damages Equipment and Creates a Host of Other Problems
- How to PM VFDs
- Control Arrangements for an Adjustable Frequency Drive
- Isolating Electric Machine Windings for Field Testing
- Considerations for the Use of AC Induction Motors on Variable Frequency Controllers in High Performance Applications
- Basic Parts and Operation of an Adjustable Frequency Drive
- Applications for Motor Current Signature Analysis
- The Need for Industry Standards for AC Induction Motors Intended for Use with Adjustable Frequency Controllers
- 10 Benefits Adjustable Speed AC Drives Provide to Industrial Users
- AC Induction Motors as Part of Variable Speed Drive Systems
- The Case for Variable Frequency Drives as a Final Control Element
- Benefits of Variable Speed Drives
- Web-enabling Variable Frequency Drives
- Energy Efficiency: Variable Frequency Drives
- Dealing with Line Harmonics from PWM Variable Frequency Drives
- Understanding Variable Frequency Drives
- Variable-Frequency Drive
- Current Shield Technology for Clean Room Applications
- How to Maintain a VFD
- Also: Directory of Variable Frequency Drive Manufacturers and Suppliers
- -- 96 Pages
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