Tutorial: From the Steinmetz model to the protection of high inertia drives

The thermal limitations of induction motors are specified by thermal limit curves that are plots of the limiting temperature of the rotor and stator in units of I 2 t. This paper discusses the thermal protection provided by rotor and stator thermal models defined by the thermal limit curves and supp...

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Main Author: Zocholl, S.E.
Format: Conference Proceeding
Language:English
Subjects:
Differential equations
Induction motors
Protection
Relays
Resistance heating
Rotors
Stators
Temperature
Tutorial
Voltage
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description The thermal limitations of induction motors are specified by thermal limit curves that are plots of the limiting temperature of the rotor and stator in units of I 2 t. This paper discusses the thermal protection provided by rotor and stator thermal models defined by the thermal limit curves and supporting motor data. The thermal model is the time-discrete form of the differential equation for temperature rise due to current and is derived from fundamental principles as shown in the Annex. In the rotor model, voltage and current are used to derive the slip-dependent I 2 r watts that permit the safe starting of high-inertia drive motors.
doi_str_mv 10.1109/PSAMP.2007.4740919
format conference_proceeding
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ispartof 2007 Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources, 2007, p.284-291
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Differential equations
Induction motors
Protection
Relays
Resistance heating
Rotors
Stators
Temperature
Tutorial
Voltage
title Tutorial: From the Steinmetz model to the protection of high inertia drives
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