Direct sequence spread spectrum based PWM strategy for harmonic reduction and communication


Switched mode power supplies (SMPSs) are essential components in many applications, and electromagnetic interference is an important consideration in the SMPS design. Spread spectrum based PWM strategies have been used in SMPS designs to reduce the switching harmonics. This paper proposes a novel method to integrate a communication function into spread spectrum based PWM strategy without extra hardware costs. Direct sequence spread spectrum (DSSS) and phase shift keying (PSK) data modulation are employed to the PWM of the SMPS, so that it has reduced switching harmonics and the input and output power line voltage ripples contain data. A data demodulation algorithm has been developed for receivers, and code division multiple access (CDMA) concept is employed as communication method for a system with multiple SMPSs. The proposed method has been implemented in both Buck and Boost converters. The experimental results validated the proposed DSSS based PWM strategy for both harmonic reduction and communication.

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Uncontrolled Keywords: SMPS,DSSS,PWM,harmonic reduction,communication,Electrical and Electronic Engineering
Publication ISSN: 1941-0107
Last Modified: 10 Jul 2024 07:04
Date Deposited: 03 Aug 2016 13:20
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2017-06
Published Online Date: 2016-08-01
Accepted Date: 2016-07-24
Submitted Date: 2016-01-24
Authors: Wang, Ruichi
Lin, Zhengyu (ORCID Profile 0000-0001-7733-2431)
Du, Jin
Wu, Jiande
He, Xiangning



Version: Accepted Version

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