Researchers explore the electric conversion of traditional fuel-powered boats for small-scale rural fishing

As the world moves toward action to combat climate change, studies on the gradual shift to greener energy are in demand. Before this study, efforts to electrify marine vehicles have focused on large-scale projects. Motivated by the need to advance electrification for small vessels, this research aims to study the electric conversion of traditional fuel-powered boats for small-scale rural fishing. In this research, a 3D model similar to the existing hull structure of fishing boats was created to simulate resistance, compute expected energy consumption, and consider the sizing of electrical equipment to form a fully electric system for the marine vehicle. This design was tested through software simulations and hardware emulations to forecast the projected operating range and system performance limitations. Results showed that 60 Ah batteries can complete 66.5% of the fishing boat’s usual operations. In contrast, the use of 100 Ah batteries would result in 100% completion of operation, with 360 Wh spare energy.

Current electrification studies are focused on large-scale projects, including marine mass transportation, large rescue boats, and electric ships. The motivation for this study was to include, in the progress and transition to electrification, small-capacity and small-industry vehicles, such as fishing boats used in day-to-day rural fishing operations. To sample the shift from a traditional fuel-powered system to a completely electric model, a fishing boat in Mabini, Batangas, Philippines, was used. This research was directed to identify the extent of electrification given the limitations set by the existing hull structure of the marine vehicle. A comparison between the usual operation of the fuel-dependent fishing boat is placed in contrast with the projected operation of the fully electric boat.

By studying the electric conversion of fuel-dependent fishing boats, this research supports the gradual shift toward greener energy sources. This also helps reduce air, water, and noise pollution that harms the environment, including marine species. This electric conversion aims to support further research into the broader use of renewable energy resources, rather than limited non-renewable resources, particularly coal and fuel. Given the current situation, these non-renewable resources remain necessary to power existing transportation operations because of the widespread use of fuel-dependent vehicles. Unfortunately, this results in the emission of harmful gases into the atmosphere. Adding to the challenge, their worsening scarcity drives price increases. Hence, studies on electrification pave the way for maximizing the use of renewable energy resources.

Authors: Marissa Francisco Munar, Sheryl Espiritu Diokno, Rovinna Janel Cruzate-Tayo, and Lew Andrew Ravelas Tria (Electrical and Electronics Engineering Institute, College of Engineering, University of the Philippines Diliman)

Read the full paper: https://ieeexplore.ieee.org/document/10738648

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