Starting and Speed Control Methods

Authored by: Ion Boldea

Induction Machines Handbook

Print publication date:  June  2020
Online publication date:  May  2020

Print ISBN: 9780367466121
eBook ISBN: 9781003033417
Adobe ISBN:


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Starting and close loop control of induction machines (IMs) is an art in itself – electric drives – but their principles have to be derived first by a deep knowledge of IM operation modes. This chapter first presents the starting and speed control methods of line-start (constant stator frequency) cage and wound-rotor IMs. Then the two main categories of close loop speed control: V/f control (with stabilising loops recently) and field-oriented control (FOC), illustrated by exemplary mechanical characteristics and block (structural) control diagrams, are unfolded and complimented by self-explanatory numerical examples.

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