Power and power spectral density in PWM inverters with randomized switching frequency

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 re...

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Bibliographic Details
Main Authors: Kirlin, R.L., Bech, M.M., Trzynadlowski, A.M., Bin Huo
Format: Conference Proceeding
Language:English
Subjects:
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
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Description
Summary: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.
ISSN:0275-9306
2377-6617
DOI:10.1109/PESC.2001.954017