Title :
Optimization of switching frequencies in the limited-pool random space vector PWM strategy for inverter-fed drives
Author :
Trzynadlowski, Andrzej 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
fDate :
11/1/2001 12:00:00 AM
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 subsystems of the drive, whose 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; electric noise measurement; electromagnetic interference; switching circuits; AC drives; EMI measurements; digitally implemented subsystems; inverter-fed drives; limited-pool random space vector PWM strategy; randomly used switching frequencies; sampling interval length; switching frequencies optimisation; Electromagnetic interference; Power system harmonics; Pulse inverters; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Sampling methods; Space vector pulse width modulation; Switching frequency; Voltage;
Journal_Title :
Power Electronics, IEEE Transactions on
