Analysis of power and power spectral density in PWM inverters withrandomized switching frequency
Kirlin, R.L.
Bech, M.M.
Trzynadlowski, A.M.
Dept. of Electr. & Comput. Eng., Victoria Univ., BC;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Apr 2002
Volume: 49,
Issue: 2
On page(s): 486-499
ISSN: 0278-0046
References Cited: 15
CODEN: ITIED6
INSPEC Accession Number: 7232996
Digital Object Identifier: 10.1109/41.993282
Current Version Published: 2002-08-07
Abstract
A novel method for accurate calculation of power spectra of the
pulsewidth modulation (PWM) voltage-source inverter with randomized
switching frequency is presented. The case of a limited pool of
switching frequencies, convenient and adequate for technical purposes,
is considered, and a mathematical background for this type of random PWM
(RPWM) is provided. It is shown that the limited-pool RPWM gives rise to
not only a continuous spectrum, but, also, under certain circumstances,
pure power spectral components (harmonics), typical for the
deterministic PWM. Criteria for the existence of harmonics are given,
and formulae for both the power and the power spectral density are
derived and verified experimentally
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
