NDLI: Harmonic elimination for constrained optimal PWM

Content Provider	IEEE Xplore Digital Library
Author	Huang, H. Shiyan Hu Czarkowski, D.
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Polytech. Univ., New York, NY, USA (Huang, H.; Shiyan Hu; Czarkowski, D.)
Abstract	The selected harmonic elimination (SHE) pulse-width modulation (PWM) inverter eliminates low-order harmonics by optimizing the distribution of switching angles and can generate high quality output waveforms. The goal of optimal SHE-PWM is to select the switching instances (angles) in such a way that a waveform with a particular characteristic is obtained and a certain criterion is minimized. To keep the results realizable in hardware, it is required that the computed consecutive switching angles are sufficiently distant from each other. This well-separation feature is not controlled by classical SHE-PWM algorithms. In this paper, a new algorithm is proposed to solve the SHE-PWM problem with a constraint that any two consecutive solutions are well separated. The algorithm first transforms the problem into a constrained optimization problem, then uses the differential evolution (DE) algorithm to find the roots with the necessary distance of separation. Since the obtained switching angles are reasonably distant from each other, the inverter switches have enough time to operate and can properly finish the switching transitions. Essentially, the proposed method computes the best possible tradeoff between the maximum error for system performance and the minimum distance between consecutive switching angles under certain constraints and it is robust.
Starting Page	2702
Ending Page	2705
File Size	1142480
Page Count	4
File Format	PDF
ISBN	0780387309
DOI	10.1109/IECON.2004.1432233
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-02
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation Equations Pulse width modulation inverters Constraint optimization Switches Space vector pulse width modulation Delay effects Distributed computing Information science Pulse generation
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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