DocumentCode :
2137573
Title :
Inductive load current harmonic injection
Author :
Brzezinski, Brent ; Parker, Joey ; Haskew, Tim A. ; Murphree, Jerry ; Jackson, David Jeff
Author_Institution :
Dept. of Mech. Eng., Alabama Univ., Tuscaloosa, AL, USA
fYear :
2002
fDate :
2002
Firstpage :
307
Lastpage :
310
Abstract :
Induction motor audible noise can be related to the frequency content present in the stator winding currents. These currents produce time varying air gap fluxes which in turn produce exciting forces resulting in vibrations in the mechanical structure. By adding harmonics into the winding currents, additional frequencies can be added to the air gap flux and audible noise. If the additional frequencies can be made to mask the switching related noise components, a motor drive combination will be less annoying than an unmasked combination. This paper shows results obtained by using a wait-hop strategy to extend the range of frequencies obtainable by using a look-up table, and a multiple index implementation for signal construction.
Keywords :
digital signal processing chips; harmonics; induction motors; noise abatement; stators; table lookup; TMS320F243 fixed-point device; digital signal processor; exciting forces; fixed-point microprocessor; frequency content; induction motor audible noise; inductive load current harmonic injection; look-up table; mechanical structure vibrations; motor drive combination; multiple index implementation; signal construction; stator winding currents; switching related noise component masking; time varying air gap fluxes; wait-hop strategy; Acoustic noise; Electromechanical systems; Force control; Induction motors; Inverters; Mechanical engineering; Rotors; Stator windings; Switching frequency; Vibrations;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
System Theory, 2002. Proceedings of the Thirty-Fourth Southeastern Symposium on
ISSN :
0094-2898
Print_ISBN :
0-7803-7339-1
Type :
conf
DOI :
10.1109/SSST.2002.1027056
Filename :
1027056
Link To Document :
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