DC power line communication based on power/signal dual modulation in phase shift full bridge converters

Abstract

For intelligent DC distributed power systems, data communication plays a vital role in system control and device monitoring. To achieve communication in a cost effective way, power/signal dual modulation (PSDM), a method that integrates data transmission with power conversion, can be utilized. In this paper, an improved PSDM method using phase shift full bridge (PSFB) converter is proposed. This method introduces a phase control based freedom in the conventional PSFB control loop to realize communication using the same power conversion circuit. In this way, decoupled data modulation and power conversion are realized without extra wiring and coupling units, and thus the system structure is simplified. More importantly, the signal intensity can be regulated by the proposed perturbation depth, and so this method can adapt to different operating conditions. Application of the proposed method to a DC distributed power system composed of several PSFB converters is discussed. A 2kW prototype system with an embedded 5kbps communication link has been implemented, and the effectiveness of the method is verified by experimental results.

Publication DOI: https://doi.org/10.1109/TPEL.2016.2527739
Divisions: College of Engineering & Physical Sciences > School of Informatics and Digital Engineering > Electrical and Electronic Engineering
Additional Information: © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords: DC distributed power system,power line communication,power/signal dual modulation,phase shift full bridge
Publication ISSN: 1941-0107
Full Text Link: http://ieeexplo ... cument/7404029/
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2017-01
Published Online Date: 2016-02-11
Accepted Date: 2016-02-03
Submitted Date: 2015-09-10
Authors: Du, Jin
Wu, Jiande
Wang, Ruichi
Lin, Zhengyu (ORCID Profile 0000-0001-7733-2431)
He, Xiangning

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