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Browse Conference Publications > Circuits and Systems, 2004. I ... Help

Spectral analysis of a novel transient dynamic boost PWM inverter control for power amplifiers

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4 Author(s)
Zhou, B. ; Dept. of Comput. Eng. & Inf. Technol., Hong Kong City Univ., China ; Chiu, Y.C. ; Lau, W.H. ; Chung, H.S.H.

This work presents a detail spectral analysis and the experimental results of the topology to solve the distortion due to pulse dropping. Owing to the non-ideal switching characteristics of the components, pulse dropping occurs since the devices cannot produce a very narrow pulse at the output of a PWM inverter. This causes spectral distortion and is especially unacceptable for digital audio amplifier application. A topology called transient dynamic boost has been developed to solve this problem. By introducing a compensation signal when the amplitude of the modulating signal reaches a critical level, the output signal remain undistorted with an appropriate DC link voltage is applied. Both the theoretical analysis and experimental results have verified the validity of the new technique.

Published in:
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on  (Volume:5 )

Date of Conference: 23-26 May 2004

Page(s):
V-876 - V-879 Vol.5
Print ISBN:
0-7803-8251-X
INSPEC Accession Number:
8189914
Digital Object Identifier :
10.1109/ISCAS.2004.1329948
Product Type:
Conference Publications

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