Multiplexed Optical Link for Gating Pulse Transmission in Multilevel Converters



Asynchronous communication, Micromirrors, Pulse width modulation converters, Wavelength division multiplexing


Multilevel power converters play an increasingly important role in energy transmission, high-power electric drives and renewable energy systems. The transmission of control signals for the semiconductor switches in power converters is critical for the operation of the system, and therefore optical communications links are employed to minimize electromagnetic interference. However, conventional parallel communication topologies have the drawback of requiring a high number of independent optical fibers and transmitter-receiver pairs as the number of transmitted signals increase, which limits the flexibility and scalability of the link. In this paper we propose the design of an optical link with wavelength division multiplexing (WDM) based on a digital micromirror device (DMD) and a linear detector array as receiver. The main advantages of the proposed system are the high flexibility and scalability of the communications link. Simulation results are obtained from a mathematical modeling of the transmitter, the link and the receiver. The communication is established by means of an asynchronous protocol in order to ensure the correct decoding of the transmitted gating signals. A feasibility analysis of the optical link is carried out in terms of the waveform quality of the multilevel inverter output voltage, measured by its total harmonic distortion (THD). The simulation results obtained in MATLAB/Simulink environment validate the methodology to enable a future implementation of the proposed optical communication link.


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Author Biographies

Pablo Meza, Universidad de La Frontera

Pablo Meza was born on October 6, 1983. He received his B.Sc. in Electronic Engineering and M.S. in Electrical Engineering in 2008, from the University of La Frontera, Temuco, Chile and his Ph.D. degree in Electrical Engineering in 2014, from the University of Concepcion, Concepcion, Chile. He is currently a full-time Professor of the Electrical Engineering Department at the University of La Frontera. His research activities are focused on areas of signal processing and design of multidimensional data acquisition systems.

Hector Young, Universidad de La Frontera

Hector Young (S'12--M'15) was born in Valparaiso, Chile in 1984. He received the B.Eng. and the M.Sc. degrees in electronics engineering in 2009 from the Universidad de la Frontera, Temuco, Chile. He received the PhD degree in power electronics from the Universidad Tecnica Federico Santa Maria, Valparaiso, Chile in 2014. Since 2014 he has been an Assistant Professor with the Electrical Engineering Department, Universidad de La Frontera. His research interests include modeling and control of power converters and electrical drives, renewable energy systems and microgrids.

Ramiro Donoso, Universidad de La Frontera, Temuco 4811230, Chile

Ramiro Donoso-Floody received the Informatics Engineering degree from Universidad Tecnica Federico Santa Maria, Valparaiso, Chile, in 2010, and the Ph.D. Engineering degree from Universidad de La Frontera, Temuco, Chile, in 2017. He is an full-time professional in the Department of Electrical Engineering at the Universidad de La Frontera, Temuco, Chile. His research interests include signal processing, Pattern recognition and machine learning.

Marcelo Faundez, Universidad de La Frontera, Temuco 4811230, Chile

Marcelo Faundez received the diploma in electronics engineering from the Universidad de La Frontera, Temuco, Chile, in 2017. His graduation project focused on the design and production of electronic cards for signal calibration and development of voltage and current sensors for power inverters. Since 2017 he works as a research assistant in renewable energy projects at the Electrical Engineering Department, Universidad de La Frontera. His current activity is to direct the development of monitoring and control systems through FPGA and microcontroller devices with data transmission via radio frequency, applied to wind generation systems.


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How to Cite

Meza, P., Young, H., Donoso, R., & Faundez, M. (2021). Multiplexed Optical Link for Gating Pulse Transmission in Multilevel Converters. IEEE Latin America Transactions, 100(XXX). Retrieved from