GE Offers Gas Turbine Hybrid Electric Drives

press release
Monday, May 07, 2012

Ideal for Noise Reduction, Redundancy, Improved Fuel Economy.

 

GE Marine offers hybrid electric systems for military and commercial marine customers based on its LM aeroderivative gas turbines, motors and drives, to help reduce noise and improve fuel economy. By teaming with a variety of industry players, GE can provide customers unmatched gas turbine hybrid electric and all electric propulsion systems integration experience.

 

Hybrid electric arrangements cross-connect the ship service power system with the propulsion system by placing an electric motor and its associated motor drive in the drive train. At lower speeds, the propulsion system, such as engines are turned off and the electric motors provide cruising power. 

 

“Many ship owners and builders are currently evaluating hybrid electric propulsion designs for existing or new build ships. Thanks to many years in this industry forming key partnerships, GE can now offer more comprehensive hybrid electric propulsion solutions for military and commercial customers,” said Brien Bolsinger, general manager, GE Marine, Evendale, Ohio.

 

In fact, GE has provided components on seven gas turbine hybrid or electric powered ship classes in service or under construction, including the unique propulsion system on the United States Navy’s LHD 8 USS Makin Island. GE offers a family of LM2500 gas turbines from 22 to 32 megawatts for twin or single gas turbine hybrid plants.  In addition to the LHD 8-class ships, GE LM2500s are used on a variety of hybrid propulsion plants, including the German Navy’s F124 and F125 frigates, and the Italian and French FREMM frigates.

 

Hybrid System Benefits

 

Hybrid electric propulsion provides navies with the following benefits versus traditional propulsion systems:

 

• Improved fuel economy
• Fewer installed prime movers for reduced propulsion costs
• Reduced diesel maintenance costs
• Flexible, integrated power and propulsion systems to direct power as needed
• Improved combat capability

 

Hybrid Electric Propulsion

 

“In fact, in ships similar to the U.S. Navy’s DDG 51 class, hybrid electric propulsion can improve fuel economy because the hybrid propulsion motor load during low speed operation can be consolidated with the ship service load.  This allows the ship service generator set to run at more efficient operating conditions and the larger propulsion gas turbines to be shut down. Thus, fuel burn can be reduced by more than 8% depending on the ship’s operating profile,” Bolsinger added.

In new designs – particularly frigates from 3,000 to 7,000 tonnes – a hybrid electric arrangement improves efficiency. The traditional COmbined Diesel Or Gas turbine (CODOG) or COmbined Diesel And Gas turbine (CODAG) frigates have two gas turbines and two diesels for propulsion and typically four diesels for ship service power (see Figure 1). With GE’s hybrid electric arrangement, the two propulsion diesels can be eliminated and replaced by electric motors. This arrangement can reduce ship construction, propulsion equipment, and maintenance costs while helping reduce noise and improve combat capabilities.

Dual Gas Turbine Hybrid Arrangement

 

GE’s LM2500 gas turbines, for instance, can be applied in a dual gas turbine hybrid arrangement versus a single gas turbine configuration to provide the lowest technical, cost, schedule and operational risk. If incorporated into an existing LM2500 CODOG ship design, GE believes a dual gas turbine configuration requires the fewest ship modifications such as changes to bulkheads, uptakes, stability, the second platform level, and the deckhouse.


 

Maritime Reporter March 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Energy

PetroVietNam Gas's Q1 gross profit falls 27.5%

PetroVietNam Gas's first-quarter gross profit fell 27.5 percent to 3.9 trillion dong ($185 million) from a year earlier, the Lao Dong (Labour) newspaper reported.

Beijing's bid to move polluting firms adds pressure on nearby regions

China's capital has ordered more than 50 companies to shut down this year in an effort to cut pollution but pushing factories out could raise objections in surrounding

Apache CEO, Vermont activist build alliance on climate issues

Steve Farris runs a $33 billion Texas oil and gas company and turns, for advice, to a bearded Vermont environmentalist. As other energy firms battled climate change

Marine Power

Havyard to Build Hybrid Battery Arctic PSV

Norway's Havyard says it has signed a contract for the construction of a Havyard 833 WE ICE platform supply vessel with Fafnir Offshore HF. The vessel is to be

NATO to bolster defence of E.European Allies

NATO is sending part of its naval rapid reaction force to the Baltic Sea as part of a drive to step up the defence of eastern European allies in response to the crisis in Ukraine,

Maersk Line named race partner for the Volvo Ocean Race

The world’s largest container shipping company, Maersk Line, is the official shipping partner for the Volvo Ocean Race, the pre-eminent round-the-world yacht race.

LNG

Petrobras, Mitsui Study South Brazil LNG Import Terminal

Brazil's state-run oil company Petroleo Brasileiro SA and Japanese trading house Mitsui Corp will study building a liquefied natural gas (LNG) terminal in the country's southernmost state,

Ukraine launches restricted operation

Ukrainian forces launched a "special operation" on Tuesday against separatist militia in the Russian-speaking East, authorities said, although aside from a landing

OSC Plans Fleet Expansion through 2018

State-owned Oman Shipping Company SAOC (OSC) is projecting to expand its current fleet of 43 ships to 50 by 2018, the Oman Daily Observer reported. According to the report,

Marine Equipment

Van Oord acquires 100% control of Dravo

Van Oord has acquired all shares of its Spanish subsidiary Dravo S.A.  Dravo S.A. has been owned, since 1987, by Van Oord (50%) and the Spanish company Dragados S.

ClassNK Approves Fillet Welding Consumable

Classification society ClassNK announced that it has granted type approval for the new MX-200F welding consumable, developed by Kobe Steel Co., Ltd. (KOBELCO) to

GE Gas Turbines Power USS America

GE Marine reports that the United States Navy’s future USS America (LHA 6) amphibious assault ship recently completed successful acceptance sea trials powered by two GE LM2500+ marine gas turbines.

 
 
Maritime Contracts Maritime Security Naval Architecture Pod Propulsion Salvage Ship Electronics Ship Repair 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: 0.2040 sec (5 req/sec)