Electric Start and Generation Systems for Gas Turbines: A Means to Self Sustainability

2006 ◽  
Author(s):  
Ian Timbrell ◽  
Steve Mason ◽  
Alan Green ◽  
Neil McCallum
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Electric Propulsion ◽  
Electrical Power ◽  
Cost Effective ◽  
Acceptance Testing ◽  
Prime Movers ◽  
Engine Testing ◽  
The Uk ◽  
Initial Results

Following the design shift in Naval ship architecture from conventional mechanical through hybrid to Integrated Electric Propulsion (IEP), the starting philosophy of prime movers needs to be rationalised so as to interact and augment the propulsion configuration and electrical distribution whilst remaining cost effective. To fulfil this requirement the UK Ministry of Defence contracted Ultra Electronics (PMES) to work in partnership to develop and demonstrate a gas turbine Electric Start and Generation System (ESGS). The undertaken programme is to demonstrate full control over the gas turbine starting system and associated maintenance features together with generating sufficient electrical power that can be used to supply all the gas turbine alternator auxiliaries. This paper will give an overview of such requirements together with the design of the basic system and the challenges to ‘navalise’ such a product and install it on a marine gas turbine. The paper will continue by reviewing data obtained from factory acceptance testing and on-engine testing with the Marine Trent MT-30. It is hoped to further compare and analyse these results with future planned testing scheduled in late 2005. Conclusions will be drawn from the initial results, the design of the proposed ESGS system and comparisons with existing in-service gas turbine start systems.

Design and Maintenance Issues of Being Able to Repair Marine Gas Turbines Without Removal From the Ship

2019 ◽  
Author(s):  
Bruce D. Thompson ◽  
John J. Hartranft ◽  
Dan Groghan
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Electrical Power ◽  
Corrosion Damage ◽  
Cost Effective ◽  
Air Filtration ◽  
Expected Time ◽  
Engine Vibration ◽  
Engine Design ◽  
Engine Maintenance

Abstract When the concept of aircraft derivative marine gas turbines were originally proposed, one of the selling points was the engine was going to be easy to remove and replace thereby minimizing the operational impact on the ship. Anticipated Mean Time Between Removal (MTBR) of these engines was expected to be approximately 3000 hours, due mostly to turbine corrosion damage. This drove the design and construction of elaborate removal routes into the engine intakes; the expected time to remove and replace the engine was expected to be less than five days. However, when the first USN gas turbine destroyers started operating, it was discovered that turbine corrosion damage was not the problem that drove engine maintenance. The issues that drove engine maintenance were the accessories, the compressor, combustors and engine vibration. Turbine corrosion was discovered to be a longer term affect. This was primarily due to the turbine blade and vane coatings used and intake air filtration. This paper discusses how engine design, tooling development, maintenance procedure development and engine design improvements all contributed to extending the MTBR of USN propulsion and electrical power generation gas turbines on the DD 963, CG 47, DDG 51 and FFG 7 classes to greater than 20,000 hours. The ability to remove the gas turbine rapidly or in most cases repair the engine in-place has given the USN great maintenance flexibility, been very cost effective and not impacted operational readiness.

A New Approach to Gas Turbine Systems in the All Electric Warship Era

2003 ◽  
Author(s):  
Abe Boughner
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Electric Propulsion ◽  
Electric Generator ◽  
Design Concepts ◽  
Machinery Plant ◽  
New Concepts ◽  
On Line ◽  
Generation Capacity ◽  
Prime Movers

This paper will focus on discussions of new concepts for integration of gas turbines into advanced warship designs. The advancement of the electric warship creates several revolutionary opportunities in ship design concepts. The Integrated Power System (IPS) combines propulsion and auxiliary loads such that any electric generator can supply any load including electric propulsion, combat and hotel loads with light areo derivative gas turbines serving as prime movers for power generation. A combination of small and large gas turbine generators are fitted so that the operator can match the on-line generation capacity to the demand thereby keeping the gas turbines loaded to efficient levels. The IPS, or All Electric Warship concept, although a matter of much interest and study, will not be discussed in this paper. This paper will discuss how the light aero engine coupled with the IPS concept allows greater flexibility in overall design of the machinery plant as well as several new concepts for gas turbine systems in warships.

High Performance and Cost Effective Recuperator for Micro-Gas Turbines

2002 ◽  
Author(s):  
Gunnar Lagerstro¨m ◽  
Max Xie
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
High Performance ◽  
Electrical Power ◽  
Cost Effective ◽  
Piping System ◽  
Micro Gas Turbine ◽  
Air Inlet ◽  
Manufacturing Technologies ◽  
Air Cells

Rekuperator Svenska AB owned by VOLVO Technology Transfer Corporation and Avesta Polarit, has successfully developed a completely laser welded recuperator for micro-gas turbine applications. Tests have shown that the thermal performance is very competitive. The recuperator was installed in a 100 kW(e) micro-gas turbine power plant for combined electricity and heat generation by a customer. The recuperator is a primary surface counter flow heat exchanger with cross corrugated duct configuration. The primary heat transfer surface plate patterns are stamped and a pair of the plates are laser welded to form an air cell. The air cells are then stacked and laser welded together to form the recuperator core which is tied between two end beams. Manifolds for air inlet and outlet as well as piping system are welded to the core. Through varying the number of air cells the recuperator core can easily be adapted for micro-gas turbine applications with different output rates of electrical power. The key manufacturing technologies are stamping of the air cell plates and laser welding of the air cells. These processes can be fully automated for mass production at low costs.

scholarly journals Royal Navy Experience of Propulsion Gas Turbines and How and Why This Experience is Being Incorporated Into Future Designs

1999 ◽  
Author(s):  
James Rand ◽  
Nigel Wright
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Electric Propulsion ◽  
High Speed ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Royal Navy ◽  
Electric Ship ◽  
Prime Movers ◽  
Aero Engines

The Royal Navy (RN) has in-service experience of both marinised industrial and aero derivative propulsion gas turbines since the late 1940’s. Operating through a Memorandum of Understanding (MOU) between the British, Dutch, French and Belgian Navies the current in-service propulsion engines are marinised versions of the Rolls Royce Tyne, Olympus and Spey aero engines. Future gas turbine engines, for the Royal Navy, are expected to be the WR21 (24.5 MW), a 5 to 8 MW engine and a 1 to 2 MW engine in support of the All Electric Ship Project. This paper will detail why the Royal Navy chose gas turbines as prime movers for warships and how Original Equipment Manufacturers (OEM) guidance has been evaluated and developed in order to extend engine life. It will examine how the fleet of engines has historically been provisioned for and how a modular engine concept has allowed less support provisioning. The paper will detail the planned utilisation of advanced cycle gas turbines with their inherent higher thermal efficiency and environmental compliance and the case for all electric propulsion utilising high speed gas turbine alternators. It will examine the need for greater reliability / availability allowing single generator operation at sea and how by using a family of 3 engines a nearly flat Specific Fuel Consumption (SFC) down to harbour loads can be achieved.

Electric Hydraulic Governor Control for Industrial and Commercial Gas Turbine Use

1966 ◽  
Vol 88 (3) ◽  
pp. 243-250
Author(s):  
N. G. Alvis
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Electrical Power Generation ◽  
Gas Turbines ◽  
Electrical Power ◽  
Mechanical Loads ◽  
Automatic Operation ◽  
Ship Propulsion ◽  
Commercial Use ◽  
Prime Movers

This paper covers the latest applications of an electric hydraulic governor control for industrial-commercial gas turbine use. Gas turbines are now being used for mechanical loads, electrical power generation, and ship propulsion. Many of these applications require some degree of automatic operation and operation with other types of prime movers. The electric governor has aided this new concept in gas turbine application. Several typical installations are discussed, including both industrial and commercial use.

Royal Navy Experience of Propulsion Gas Turbines and How and Why This Experience is Being Incorporated Into Future Designs

2000 ◽  
Vol 122 (4) ◽  
pp. 680-684 ◽  
Author(s):  
James Rand ◽  
Nigel Wright
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Electric Propulsion ◽  
High Speed ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Royal Navy ◽  
Electric Ship ◽  
Prime Movers ◽  
Aero Engines

The Royal Navy (RN) has in-service experience of both marinized industrial and aero derivative propulsion gas turbines since the late 1940s. Operating through a Memorandum of Understanding (MOU) between the British, Dutch, French, and Belgian Navies the current in-service propulsion engines are marinized versions of the Rolls Royce Tyne, Olympus, and Spey aero engines. Future gas turbine engines, for the Royal Navy, are expected to be the WR21 (24.5 MW), a 5 to 8 MW engine and a 1 to 2 MW engine in support of the All Electric Ship Project. This paper will detail why the Royal Navy chose gas turbines as prime movers for warships and how Original Equipment Manufacturers (OEM) guidance has been evaluated and developed in order to extend engine life. It will examine how the fleet of engines has historically been provisioned for and how a modular engine concept has allowed less support provisioning. The paper will detail the planned utilization of advanced cycle gas turbines with their inherent higher thermal efficiency and environmental compliance and the case for all electric propulsion utilizing high speed gas turbine alternators. It will examine the need for greater reliability/availability allowing single generator operation at sea and how by using a family of 3 engines a nearly flat Specific Fuel Consumption (SFC) down to harbour loads can be achieved. [S0742-4795(00)01203-5]

MT30: The Heart of Future Integrated Power and Propulsion Systems

2014 ◽  
Author(s):  
Oliver Rath
Keyword(s):  
Gas Turbines ◽  
Electric Propulsion ◽  
Propulsion System ◽  
Propulsion Systems ◽  
Marine Propulsion ◽  
Wide Range ◽  
Prime Movers ◽  
The Republic ◽  
The Uk ◽  
System Configurations

The MT30 has been developed specifically for 21st century marine propulsion and has now been applied in a wide range of different propulsion system configurations in the US Navy, the UK Royal Navy and the Republic of Korea Navy. Both naval and commercial marine propulsion systems are increasingly seeking more power from fewer prime movers to facilitate lower cost of ownership. In naval systems, the move to partial or full-electric propulsion for larger escorts and the introduction of single boost gas turbines for smaller escorts has allowed a reduction in the number of installed prime movers, while retaining and often enhancing survivability and redundancy. The Rolls-Royce MT30 marine gas turbine can be regarded as an enabling technology in this area to allow a wide variety of propulsion system options to be realised. This paper describes the current trends in Naval propulsion systems with particular focus on the platform design, operational and through-life benefits of the MT30 in the context of different system arrangements. A variety of different systems are covered with a particular focus on hybrid electromechanical and all-electric systems.

Propulsion Systems and the MT30 Marine Gas Turbine: The Quest for Power

2003 ◽  
Author(s):  
Roger W. Tooke ◽  
David Bricknell
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Electric Propulsion ◽  
Simple Cycle ◽  
Power Demand ◽  
Propulsion Systems ◽  
Marine Propulsion ◽  
Potential Applications ◽  
Endurance Testing ◽  
Prime Movers

Both naval and commercial marine propulsion systems are increasingly seeking more power from fewer prime movers. In naval systems, the move to electric propulsion for larger escorts and the introduction of single boost gas turbines for smaller escorts has allowed the reduction in number of installed prime movers, while retaining the required redundancy. To meet this power demand, Rolls-Royce has marinised the Trent 800 aero gas turbine to produce the MT30 a 36MW simple cycle marine gas turbine. With first packaged engine deliveries available in early 2004, this paper introduces the MT30, outlines the marinisation process and announces the performance confirmed though the two demonstration engines. Completion of endurance testing, leading to preliminary certification of the engine is programmed for June 2003. In addition, this paper looks at the potential applications, (both mechanical and genset) of the MT30 and the propulsion system benefits made possible through the engine’s introduction.

scholarly journals Powering Ahead

2011 ◽  
Vol 133 (05) ◽  
pp. 30-33 ◽  
Author(s):  
Lee S. Langston
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Nuclear Power ◽  
Electrical Power ◽  
The United States ◽  
Combined Cycle ◽  
Electrical Power System ◽  
Efficient Technology ◽  
The Military

This article explores the increasing use of natural gas in different turbine industries and in turn creating an efficient electrical system. All indications are that the aviation market will be good for gas turbine production as airlines and the military replace old equipment and expanding economies such as China and India increase their air travel. Gas turbines now account for some 22% of the electricity produced in the United States and 46% of the electricity generated in the United Kingdom. In spite of this market share, electrical power gas turbines have kept a much lower profile than competing technologies, such as coal-fired thermal plants and nuclear power. Gas turbines are also the primary device behind the modern combined power plant, about the most fuel-efficient technology we have. Mitsubishi Heavy Industries is developing a new J series gas turbine for the combined cycle power plant market that could achieve thermal efficiencies of 61%. The researchers believe that if wind turbines and gas turbines team up, they can create a cleaner, more efficient electrical power system.

scholarly journals Clear Skies Ahead

2016 ◽  
Vol 138 (06) ◽  
pp. 38-43
Author(s):  
Lee S. Langston
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Electrical Power ◽  
Vital Role ◽  
Medium Size ◽  
Steady Increase ◽  
Innovative Design ◽  
Turbine Engine ◽  
Boom And Bust

This article discusses various fields where gas turbines can play a vital role. Building engines for commercial jetliners is the largest market segment for the gas turbine industry; however, it is far from being the only one. One 2015 military gas turbine program of note was the announcement of an U.S. Air Force competition for an innovative design of a small turbine engine, suitable for a medium-size drone aircraft. The electrical power gas turbine market experienced a sharp boom and bust from 2000 to 2002 because of the deregulation of many electric utilities. Since then, however, the electric power gas turbine market has shown a steady increase, right up to present times. Coal-fired plants now supply less than 5 percent of the electrical load, having been largely replaced by new natural gas-fired gas turbine power plants. Working in tandem with renewable energy power facilities, the new fleet of gas turbines is expected to provide reliable, on-demand electrical power at a reasonable cost.

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