Inductive load current harmonic injection
Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540) - Trang 307-310
Tóm tắt
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.
Từ khóa
#Acoustic noise #Vibrations #Induction motors #Force control #Stator windings #Electromechanical systems #Mechanical engineering #Inverters #Switching frequency #RotorsTài liệu tham khảo
10.1109/20.767329
10.1109/28.81839
10.1109/28.54252
morrill, 1940, Harmonic Theory of Noise in Induction Motors, AIEE Transactions, 59, 474
10.1006/jsvi.1999.2208
bolognani, 1999, random modulation and acoustic noise reduction in im drives: a case study, Proceedings of 9th International Conference on Electrical Machines and Drives, 137, 10.1049/cp:19991005
bose, 0, Power Electronics and AC drives, 140
alger, 0, Induction Machines Their behavior and Uses, 365
morse, 0, Vibration and Sound, 217
timar, 1989, Noise and Vibration of Electrical Machines, 22