New Energy Ship Power System

Abstract

The performance of ship propulsion systems is related to the economy, safety, and reliability of ship operation. The traditional mechanical propulsion system has problems such as high noise, small speed range, flexibility, and poor economy. The development of new propulsion systems has gradually become a research hotspot in the shipping industry. Hybrid power and new energy have always been research hotspots in green ship power. Hybrid shaft with motor technology can optimize system power distribution, thereby reducing system losses and improving system efficiency. The composite energy composed of batteries, supercapacitors, fuel cells, as well as natural energy sources such as solar and wind energy, matched with energy storage devices and direct current grid technology, can achieve zero emission targets and recover and store braking energy. Based on the theme of green and efficient, analyze the power requirements of different ship types, comprehensively consider technical conditions such as energy supply, ship power distribution, drive control, and propellers, and summarize three configuration schemes for green ship power. Focus on introducing energy storage technology, DC networking technology, and shaft mounted machine frequency converter technology and the technical difficulties in the schemes. Based on the power requirements of different ship types, taking into account technical conditions such as energy supply, ship power distribution, drive control, and propulsion, three green power configuration schemes for ships are proposed. Energy storage technology, DC networking technology, and shaft motor frequency converter technology are introduced, and the technical difficulties in the solutions are summarized. Combined with actual ship demonstrations, the technical characteristics of green ship propulsion related scientific research achievements and engineering project schemes are presented.