ABB drives - Technical guide No. 4, Guide to variable ...

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Technical Guide No. 4Guide to variable speed drivesABB drives2 Guide to variable speed drives | Technical Guide No. 4Technical Guide No. 4 | Guide to variable speed drives 3 Copyright 2011 ABB. All rights subject to change without notice. 3AFE61389211 REV C Guide No. 4Guide to variable speed drives4 Guide to variable speed drives | Technical Guide No. 4Technical Guide No. 4 | Guide to variable speed drives 5ContentsChapter 1 - Introduction ........................................ ....................................7Gen eral ........................................ ........................................ ..............7Chapter 2 - Processes and their requirements ........................................ ..8Why variable speed control? ........................................ .......................8Industrial segments with VSD in processing systems.

order, the magnetic flux of the motor starts to rotate. The motor’s rotor will then follow this flux with a certain slip. This is the basic principle used to control AC motors. This control can be achieved using a frequency converter. ... Technical guide No. 4 | Guide to variable speed drives 15 The workhorse of industry: the electric motor ...

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