The slip energy recovery system for wound rotor induction motors

The slip energy recovery system for wound rotor induction motors

For access to this article, please select a purchase option:

Buy chapter PDF
(plus tax if applicable)
Buy Knowledge Pack
10 chapters for £75.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Variable Frequency AC Motor Drive Systems — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

The overall principle of slip energy recovery systems (or 'static Kramer systems') is to insert a variable back-EMF into the rotor circuit in such a way that the resultant energy can be recovered and fed back into the AC mains network which is feeding the stator of the induction motor. The result can then be an efficient method of reducing the speed of the motor. These principles were initially established using motor generator sets to achieve the energy recovery and feedback, with a DC motor to absorb the energy and an AC generator to return the power to the mains network. However, due to high cost and the relatively high power losses in such schemes, the principles of slip energy recovery are now universally applied using static convertors. This system requires the use of a wound rotor induction motor with slip rings to connect into the rotor circuit. It therefore tends to be used in custom designed systems where the motors and convertors are specifically chosen for the application. It is used for drives in the hundreds or thousands of kilowatts ratings where the cost of a specially designed system can be justified.

Inspec keywords: induction motors; DC motors

Other keywords: rotor circuit; DC motor; power loss; variable back EMF; AC generator; wound rotor induction motor; static convertors; slip energy recovery

Subjects: Asynchronous machines

Preview this chapter:
Zoom in

The slip energy recovery system for wound rotor induction motors, Page 1 of 2

| /docserver/preview/fulltext/books/po/pbpo008e/PBPO008E_ch10-1.gif /docserver/preview/fulltext/books/po/pbpo008e/PBPO008E_ch10-2.gif

Related content

This is a required field
Please enter a valid email address