Electric Propulsion Systems for Ships Hitachi（船舶电力推进系统日立）.pdfVIP

Hitachi Review Vol. 62 (2013), No. 3 231 topics Electric Propulsion Systems for Ships Yoshifumi Ajioka Kiyoshi Ohno OVERVIEW: The number of electric propulsion ships being built is expected to rise due to their ability to do an excellent job in meeting societal demands such as simplifying the running of a ship, increasing fuel efficiency during travel, and reducing CO2 emissions. Hitachi is applying power converter and electric motor-driven control technology to its development of an electric propulsion system for ships, which was adopted for use in the icebreaker “Shirase.” INCREASING USE OF ELECTRIC from fuel to propulsion, and a larger system volume PROPULSION SYSTEMS ON SHIPS due to the large number of component parts. AS is the case with general automobiles that are driven Electric propulsion systems are often used on ships on land, the main type of engine used on ships is the such as icebreakers or oceanographic research vessels internal combustion engine (motors such as diesel that take advantage of the aforementioned operational engines and gas turbines). It is a well-known fact that benefits, or large passenger cruise ships and others that as a societal demand for reductions in carbon dioxide emphasize cost and silent operation. (CO2) emissions has arisen, electric motor-driven Hitachi is working to develop electric propulsion systems have been introduced for use in automobile systems for ships based on these advantages and engines, thereby greatly improving fuel efficiency disadvantages. in hybrid or electric vehicles (which decrease CO2 emissions by reducing the consumption of fossil SOLUTI