Zero-Additional-Hardware Power Line Communication for DC-DC Converters

被引：9

作者：

Han, Renke ^{[1
]}

Rogers, Daniel J. ^{[1
]}

机构：

[1] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2022年 / 37卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

Receivers; Voltage control; Frequency control; Transmitters; Perturbation methods; Power electronics; Bandwidth; Long; short pulses identification; virtual zero-crossing; zero-additional-hardware power line communication (PLC); PV MODULE;

D O I：

10.1109/TPEL.2022.3178020

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A power line communication (PLC) solution to provide a data link between two or more dc-dc power converters is proposed. The approach does not require additional analog circuitry or high-sample-rate analog-to-digital converters to be added on top of the original system. A modulation and signal injection method for the transmitter, and a sampling and demodulation strategy for the receiver are developed. The PLC frequency band is placed between the control loop cutoff frequency and the power electronics circuit cutoff frequency, in a region that we identify as the "intermediate frequency band". The transmitter modulates the converter voltage or current output by injecting perturbations into the control loop at the input to the PWM unit. To tolerate unsynchronized transmitter and receiver clocks, a virtual zero-crossing location algorithm is combined with long/short pulse identification to achieve demodulation at the receiver. The solution is verified experimentally and achieves reliable bidirectional PLC communication at 2 kb/s with an 8 kHz receiver sampling frequency.

引用

页码：13107 / 13118

页数：12

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