Title :
Power and power spectral density in PWM inverters with randomized switching frequency
Author :
Kirlin, R. Lynn ; Bech, Michael M. ; Trzynadlowski, Andrzej M. ; Huo, Bin
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
fDate :
6/23/1905 12:00:00 AM
Abstract :
Theoretical and experimental investigation of the impact of randomization of switching frequency in pulse width modulated (PWM) three-phase inverters on the spectra of output voltage is presented. The case of random PWM with a limited set of employed values of switching frequency is analyzed with respect to both the power and power density spectral components. A novel method for accurate prediction of spectra of inverter voltage is introduced and experimentally verified. Experiments were also used to illustrate the important issue of required width of the range of switching frequencies
Keywords :
DC-AC power convertors; PWM invertors; harmonic distortion; power conversion harmonics; power supply quality; random processes; switching circuits; output voltage spectra; power density spectral components; random PWM; switching frequency; switching frequency randomization; three-phase PWM inverters; Power engineering and energy; Power engineering computing; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Pulsed power supplies; Sampling methods; Space vector pulse width modulation; Switching frequency; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954017
