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Content Provider | IEEE Xplore Digital Library |
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Author | Kujan, P. Hromcik, M. Sebek, M. |
Copyright Year | 2008 |
Description | Author affiliation: Dept. of Control Eng., Czech Tech. Univ. in Prague, Prague (Kujan, P.; Sebek, M.) || Center for Appl. Cybern., Czech Tech. Univ. in Prague, Prague (Hromcik, M.) |
Abstract | Optimal pulse width modulation (PWM) problem is an established method of generating PWM waveforms with low baseband distortion. In this paper we focused on computation of optimal switching angles of a odd PWM waveform for generating general odd symmetric waveforms. We introduce an exact and fast algorithm with the complexity of only O(n $log^{2}$ n) arithmetic operations. This algorithm is based on transformation of appropriate trigonometric equations for each harmonics to a polynomial system of equations that is transferred to a special system of sum of powers. The solution of this system is carried out by modification of Newtonpsilas identity via Pade approximation and orthogonal polynomials theory and property of symmetric polynomials. Finally, the optimal switching sequence is obtained by computing the zeros of two orthogonal polynomials in one variable. |
Starting Page | 371 |
Ending Page | 378 |
File Size | 236771 |
Page Count | 8 |
File Format | |
ISBN | 9781424417674 |
ISSN | 1553572X |
DOI | 10.1109/IECON.2008.4757982 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2008-11-10 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Pulse width modulation Polynomials Baseband Equations Power harmonic filters Chebyshev approximation Control engineering Space vector pulse width modulation Pulse generation Pulse width modulation inverters Padé approximation Optimal PWM problem selected harmonics elimination Newton identities |
Content Type | Text |
Resource Type | Article |
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