View Full Document

A Synchronous Permanent Magnet Hybrid AC Machine



View the full content.
View Full Document
View Full Document

2 views

Unformatted text preview:

A Synchronous Permanent Magnet Hybrid AC Machine Thomas A Lipo FeltowIEEE Xiaogang Luo Member IEEE TransDimension Intemationst Corporation Department of Electrical and Computer Engineering University of Wisoconsin Msdison Riverside CA 92507 USA Madison WI 53706 USA Abstrack In thts paper a synchronouslpermanent magnet hybrld SynPM machine k presented It Is shown that the machine has good power density and efflclency and that the machine has true tleld regulation capability The principle of operation finite element analysis and shnutatkm of this new machine are investigated In the paper L INTRODUCTION In this paper a new electric machine termed the SynPM Hybrid machine is presented This new machine is a combbation of a PM machine and a wound field synchmous machine It has both PM poles and excitation poles on the rotor retaining the conventional multi phase machine stator windhig It has both the features of both PM and synchronous machines The PM poles provide the air gap with major part of air gap flux The excitation poles act as the flux regulator to adjust the air gap flux distribution By proper connection the of stator windings field weakening strengthening operation is achieved by picking up the EMF changes caused by the change of flux density under the excitation poles Although the slip rings and brushes are still present in this kind of electric machine failure of the brush rigging will not cause as severe a problem as it would for the conventional wound field synchronous machine since the PM poles still produce fairly large air gap flux even with the field winding out of service II PRINCIPLEOFOPERATION The structure of the SynPM machine is shown in Figure 1 The machine has six poles in which 4 of the rotor poles are PM poles and the remaining 2 poles are excitation poles In general the operation of this type of machines is quite similar to that of the permanent magnet synchronous machine except that this new structure possesses field regulation



Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view A Synchronous Permanent Magnet Hybrid AC Machine and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view A Synchronous Permanent Magnet Hybrid AC Machine and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?