The Control Techniques Drives and Controls Handbook
This handbook contains technical information for practicing drive and electrical engineers, covering the technology underlying drives, motors, and control units and modern practical applications.
TABLE OF CONTENTS The Control Techniques Drives and Controls Handbook
Chapter 12: Applications
It is not practical to describe all possible applications and/or characteristics for electrical variable-speed drives. This chapter aims to provide an insight into some of the possibilities/opportunities. Typical characteristics are covered and techniques applied in many different application are described. Then, a large number of examples of actual applications are covered in varying degrees of technical depth. This chapter is not intended as a summary of what is possible, rather a sample of what has been done and the fundamental applications techniques which have been applied.
1 TYPICAL LOAD CHARACTERISTICS AND RATINGS
In order to successfully select and apply the optimum drive system, it is necessary to understand the essential features of both the alternative drive technologies and the load to be driven. The following listings of common loads could prove useful when selecting a drive.
METALS INDUSTRIES
See Table 12.1.
| Drive duty | Rating range | Comments/drive type |
|---|---|---|
| Rolling mill | up to 1000s of kW | high-impact torque loading, constant kW speed range, steel works specification and difficult environment; closed loop induction motor drives and D.C. drives. |
| Strip mill | up to 100s of kW | normal torque loading (150% maximum) constant kW speed range, steel works specification and difficult environment; closed loop induction motor drives and D.C. drives. |
| Slitters and perforators | 50 to 150 kW | in metal finishers' plant, environment and specification easier normally IP23 enclosure, forced ventilation with filter is acceptable; drive often integrated with wind/unwind stand drives; closed loop... |
Copyright The Institution of Electrical Engineers 2001 under license agreement with Books24x7
