Linear Pulsewidth Modulation Under Fluctuating Power Supply

Linear Pulsewidth Modulation Under Fluctuating Power Supply

Heavy fluctuations in the dc power supply cause large distortions, when the simple pulsewidth modulation technique is employed in inverters. The ripples in the dc supply may even be synchronous with the converted ac signal. To overcome this nonlinear distortion, a new carrier signal is generated by...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) Vol. 61; no. 4; pp. 1769 - 1773
Main Authors: Janakiraman, P. A., Abdul Rahman, S.
Format: Journal Article
Language:English
Published: New York IEEE 01-04-2014
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Demodulation
multiplier
nonlinear distortion
pulsewidth modulation (PWM)
switching converters
Online Access:Get full text
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Description
Summary:Heavy fluctuations in the dc power supply cause large distortions, when the simple pulsewidth modulation technique is employed in inverters. The ripples in the dc supply may even be synchronous with the converted ac signal. To overcome this nonlinear distortion, a new carrier signal is generated by multiplying the triangular dither signal with the dc supply voltage, without changing the basic dither frequency. The modulator-demodulator characteristic becomes linear, thereby removing the distortion.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2013.2263776