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.

This control can be achieved using a frequency converter. As the name suggests, a frequency converter changes the frequency of the alternating current and voltage. A frequency converter con-sists of three parts. Regular 50 Hz 3-phase current is fed in to the rectifier part, which converts it to direct current. The DC voltage

  Converter, Frequency, Voltage, Frequency converter