GE Debuts Breakthrough in Electrical Thruster Propulsion

MarineLink.com
Monday, May 06, 2013
GE’s Inovelis pump jet is a breakthrough in electrical thruster design and provides higher efficiency over a wider range of operations and in dynamic positioning. Photo: GE

In a move that could change the way the maritime industry views propulsion technology, GE’s Power Conversion business increased its offshore systems portfolio with Inovelis, a podded thruster with unmatched fuel efficiency and overall performance.

Inovelis incorporates an electrically powered propeller with its motor housed within a steerable pod mounted beneath the hull of an offshore vessel. It incorporates all the assets of a podded thruster, including maneuverability, responsiveness and excellent fuel economy. Based on pump jet principles, it features fixed stator vanes and a nozzle that act together to guide the water flow across the impeller blades, substantially enhancing propulsion efficiency. Its compactness enables an even greater degree of integration between the hull and the propulsion unit, further influencing the ships’ fuel economy and emissions.

Pump jet technology was originally used in submarines and is already used for high-speed surface vessels. Now GE is applying it to offshore platform support vessels (PSVs). The Inovelis solution has higher thrust capability than a more conventional propulsion system, as well as improved hydrodynamics, providing higher efficiency over a wider range of operations, in dynamic positioning (DP) and in transit, the manufacturer says. A traditional propulsion setup for a PSV has a large propeller with a nozzle, which has reduced performance when the speed of the ship increases.

Whereas a vessel with a traditional propulsion system has a propeller pushing on the water, a pump jet draws in water and then forcibly ejects it out through a nozzle. It is the marine equivalent of a jet engine, except that while jet engines are fixed, Inovelis can be pointed in any direction on a horizontal plane.

Inovelis is a system designed to best suit the performance and fuel efficiency needs of both modes of operation, transit and DP. Its PSV is driven by two 2.5-megawatt Inovelis pods, operating 30% of the time in transit at full speed.

Inovelis uses GE’s innovative induction motor technology, which brings further reliability and helps reduce maintenance requirements. In fact, the pod has a “no man access” design, which helps reduce overall size and provides an additional differentiation from other designs.

GE already has received a number of orders all destined for large PSVs. The first is scheduled for delivery in the second quarter of this year, with ship commissioning around the end of the year.GE Power Conversion’s product and system portfolio for offshore vessels includes power generation, electric propulsion, drilling systems, DP and ship automation systems.

www.gepowerconversion.com


New Products

FlameRanger Automatically Detects and Fights Fires

Unifire AB’s FlameRanger is a first-of-its-kind robotic nozzle system which automatically detects and extinguishes fires for fixed installations, indoors and outdoors,

New Offshore Gangway Launched at ONS

The new Barge Master Gangway will be presented at the joint booth of Barge Master and Bosch Rexroth during the international offshore trade exhibition ONS (Offshore Northern Seas) in Stavanger.

Transas to Unveil the ‘Future of Maritime Operations’

Today's maritime industry requires realistic solutions and concepts for a modern, integrated operational infrastructure that delivers a sustainable, viable future,

Marine Propulsion

BV Classes First LNG-fuel Oil/Chemical Tanker

Leading international classification society Bureau Veritas has classed the first LNG-fuelled newbuilding oil/chemical tanker, the 15,000 dwt Ternsund, built under BV class at Avic Dingheng,

SK Shipping Selects 5X72DF for LNG Carriers

Securing the position of its low-speed low-pressure X‑DF engines as market leaders, Winterthur Gas & Diesel (WinGD) has been selected to supply two 5-cylinder X72DF

MN100: Cummins Marine, Inc.

The Company: Cummins, Inc. is a corporation of complementary business units that design, manufacture, distribute and service engines and related technologies, including fuel systems,

Marine Power

BV Classes First LNG-fuel Oil/Chemical Tanker

Leading international classification society Bureau Veritas has classed the first LNG-fuelled newbuilding oil/chemical tanker, the 15,000 dwt Ternsund, built under BV class at Avic Dingheng,

SK Shipping Selects 5X72DF for LNG Carriers

Securing the position of its low-speed low-pressure X‑DF engines as market leaders, Winterthur Gas & Diesel (WinGD) has been selected to supply two 5-cylinder X72DF

MN100: Cummins Marine, Inc.

The Company: Cummins, Inc. is a corporation of complementary business units that design, manufacture, distribute and service engines and related technologies, including fuel systems,

 
 
Maritime Careers / Shipboard Positions Maritime Security Navigation Offshore Oil Pipelines Pod Propulsion Salvage Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0782 sec (13 req/sec)