Hybrid shipping for inland navigation: Loss analysis of an aluminum direct-drive high performance 11,000Nm Permanent Magnet machine

Abstract

Hybrid electric ship propulsions are becoming a leading/emerging area of research, prompting investigation in hybrid propulsion system design and demonstration of concept vessels. With respect to ship design and operation, minimizing costs associated with fuel consumption and maintenance are key objectives. As such, new, and existing, ships are subject to regulatory requirements, especially regarding emissions and energy efficiency. Hybrid electric propulsion is a promising approach in addressing these concerns. Particularly for inland vessels that require a high degree of manoeuvrability and are continuously travelling upstream and downstream. In this work, a Permanent Magnet propulsion motor with 350kW at 300rpm, hence around 11,000Nm, will be discussed. With this motor a quiet mode is available with reduced emission during electric cruising and dynamic positioning.