Title :
Optimization of switching frequencies in the limited-pool random space vector PWM technique for inverter-fed drives
Author :
Trzynadowski, A.M. ; Bech, Michael M. ; Blaabjerg, Frede ; Pedersen, John K. ; Kirlin, R. Lynn ; Zigliotto, Mauro
Author_Institution :
Dept. of Electr. Eng., Nevada Univ., Reno, NV, USA
Abstract :
A space vector PWM technique for inverter fed AC drives which, in contrast with known random modulation methods, is characterized by a very small pool of randomly used switching frequencies, is presented. The limited size of the pool facilitates design of digitally implemented linear current control schemes, in which the controller settings depend on the length of sampling interval. A method for optimal selection of pool frequencies is described and validated by experimental evidence, including EMI measurements
Keywords :
AC motor drives; PWM invertors; digital control; electric current control; switching circuits; EMI measurements; controller settings; digitally implemented linear current control; inverter-fed AC drives; limited-pool random space vector PWM; random modulation methods; randomly used switching frequencies; sampling interval length; switching frequencies optimisation; Current control; Drives; Electromagnetic interference; Pulse inverters; Pulse width modulation converters; Pulse width modulation inverters; Sampling methods; Space vector pulse width modulation; Switching frequency; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1999. APEC '99. Fourteenth Annual
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-5160-6
DOI :
10.1109/APEC.1999.750493
