Induction Machine Design for Variable Speed

Authored by: Ion Boldea

Induction Machines Handbook

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

Print ISBN: 9780367466183
eBook ISBN: 9781003033424
Adobe ISBN:

10.1201/9781003033424-7

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Abstract

The complex process of designing a variable speed induction machine (IM) to meet performance/cost and torque/speed envelops per given d.c. input voltage (current) to the inverter is discussed in this chapter by introducing key principles for electromagnetic design such as general drives, constant power speed range (CPSR), power and voltage derating (due to the PWM converter supply), reducing skin effect in windings – especially in the rotor bars -, torque pulsation reduction methods, increasing efficiency and breakdown torque, voltage management for wide constant power speed range (CPSR) design for high- and super-high-speed (a 21 kW, 47 krpm, 94% efficiency IM sample design, for wide CPSR is included).

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