Pestana head of ship design, abb marine, billingstad, norway this abstract. Electric propulsion components with high power densities. The content of the course provides an overview and understanding of the propulsion system operation for practising engineering and electrotechnical officers who may be required to develop operational procedures for a dieselelectric plant. Turboelectric distributed propulsion engine cycle analysis. This text is intended for persons interested in the analysis and optimization of vehicle propulsion systems. The program for an advanced electric propulsion system concept for electric vehicles was establ ished to evaluate a number of candidate system configurations, from which two systems were selected for conceptual design and preparation of a development plan. Fossen2 abstract this article presents a mathematical model of a complete dieselelectric propulsion system, including components as diesel generators, distribution network, variable speed thrusterdrives. As all electric and hybrid electric propulsion technology matures and becomes better accepted by the marine community, business opportunities will be created for nova scotia companies with expertise in research, design and engineering, manufacturing, installation, testing, and service and maintenance of components or complete systems. Electric and hybridelectric propulsion systems springerlink.
The first ships with diesel electric propulsion were in operation as early as 1904 and the concept has. Mathematical modelling of dieselelectric propulsion systems for marine vessels jan fredrik hansen1,3, alf ka. Marin showed that azipod propulsion compared to a fixed shaftline propulsion design still had a 68 percent lead what regards to propulsion efficiency. Future trends of electrical propulsion and implications to ship design h. A dieselelectric transmission, or dieselelectric powertrain, is used by a number of vehicle and ship types for providing locomotion. Allelectric ships will unlock this power by applying an integrated power system ips that provides electric power to the entire ship. Wider 150 genesi full electric propulsion with battery. The electric propulsion system for icebreakers described below had to have a highpower electric motor that offers load characteristics that can provide a great deal of torque at low speed, and so it was developed by applying electric motor technology for industrial steel. Conversion to electric propulsion is hence a natural step. This system involves generators producing electricity that drives an electric motor unit that turns the propeller shaft or other propulsion device such as azipods see below. Mathematical optimization methods parameter and control, including cae tools. Mathematical modelling of dieselelectric propulsion systems for marine vessels article pdf available in mathematical and computer modelling of dynamical systems 007 september 2001 with. How superyacht diesel electric power systems work 21 january 2015 by roger marshall former cunard flagship the qe2 underwent a major refit in 19867 to transform her from a steamship to a modern diesel electric liner a popular choice for modern cruise liners.
Electric propulsion ep is a class of space propulsion which makes use of electrical power to accelerate a propellant by different possible electrical andor magnetic means. Over the last 10 years the electrical propulsion fleet grew three times faster than the world fleet. May 29, 2015 a hybrid propulsion system is basically a diesel electric system with the addition of electrical storage devices and enhanced controls. Dieselelectric propulsion plants guideline 20120731. Posted on june 18, 2017 by ocean time marine although the idea of powering your vessel with the indirect, twostep diesel electric energy transfer system may appear to be unnecessarily complex, its many advantages can make it a compellingly attractive. The latter powers deep space 1, nasa s successful ion propulsion vehicle, which now cruises the solar system 7 million miles 220 million kilometers from earth, testing inspace hardware and electric propulsion capabilities. The wider 150 has a propulsion system that draws inspiration from thousands of military and commercial vessels that run using diesel electric power. The setup of the propulsion system depends on the vessel size, trade or type of operation. How superyacht diesel electric power systems work boat. The goal for todays owners is to select a propulsion and power generation system that suits. With more than 12 years of experience, naval dc is your specialist for advanced pure, solar and hybrid electric systems. Simulations show that diesel electric propulsion can be the most fuel efficient solution for lng carriers under realistic operating conditions. Turboelectric distributed propulsion engine cycle analysis for hybridwingbody aircraft james l.
Maximum payioad capacity and optimal utilization of available space by reduced volume and decentralized arrangement of components of the propulsion system. Rms qm queen mary was a steamer cruise of 29 pax, built in 1936 and retired in 1967. The use of electrical power enhances the propulsive performances of the ep thrusters compared with conventional chemical thrusters. Most common systems on larger cargo vessels the most common system is a slow speed main engine with a maximum speed of 100 revolutions per minute connected to a fixed pitch propeller.
Electricity shifts the currents of ship propulsion. Dieselelectric propulsion system maritime economics sa. A diagnostic of dieselelectric propulsion for ships newton narciso pereira university of s a o paulo, department of architecture naval and oceanic engineering. The future of aircraft propulsion is electric nasa. Maritime electrical installations and diesel electric propulsion.
Sep 19, 2017 photos courtesy of glacier bayglacier bays electric motor, the keystone of its full propulsion system, is on the cutting edge of diesel electric pleasure boating. Ihimu has developed an energysaving, environmentally friendly dieselelectric propulsion system with a contrarotating propeller. Dieselelectric drive takes less space than the equivalent directdrive twostroke engine allowing the aft section to be slimmer and giving better flow over the propeller. P a r t 6 c h a p t e r 2 c h a n g e sc u r r e n t rules for classification. Jan 04, 2017 fully electric propulsion on a passenger ship becomes possible posted on january 4, 2017 january 4, 2017 by news hound the norwegian explorer cruise line, hurtigruten, is to build its two new expedition ships using a new and environmentally sustainable hybrid, electric propulsion technology from rollsroyce. This superiority has been a major reason for the steadily growing demand for diesel electric main drives in marine engineering applications. The propulsion system may be split in three parts fig.
This superiority has been a major reason for the steadily growing demand for dieselelectric main drives in marine engineering applications. Electric propulsion systems and hybrid vehicles the electrification of road vehicles is accelerating globally and leading car manufacturers are currently devoting substantial resources to meet market expectations for safe, energy efficient and affordable vehicle concepts. The leading edge asynchronous propeller technology leaptech project will test the premise that tighter propulsionairframe integration, made possible with electric. Theres a dilemma that prevents diesel electric propulsion from being widely adopted in boats and yachts, and it involves one of the. Hybrid electric solutions for the marine industry offer a high efficiency alternative to conventional marine propulsion.
Dnvglrushippt6ch2 propulsion, power generation and. The range of options available to ship owners is greater than ever before. Maximum payioad capacity and optimal utilization of available space by reduced volume and decentralized arrangement of components. In 1893, one of the first electric boats electricity carried passengers on the river thames in england. Recent renewed interest in dieselelectric marine propulsion creates a need for more understanding of how the systems work and how they are laid out. Marine power and propulsion mechanical engineering mit. Developing a new methodology for evaluating diesel. Dec 19, 2015 1 diesel electric propulsion system by using diesel electric propulsion, we will able to operate diesel engines at. Electric propulsion systems, electric drive systems. Pdf the main objective of this paper is to present an analysis on diesel electric. We offer solutions from 10 kw to 1 mw, as well as completely integrated propulsion systems.
It leverages the high torque of the uqm powerphase system for displacement speed, improved maneuverability, while reducing noise, emissions and vibration. Its focus lies on the controloriented mathematical. The marine propulsion order survey includes drivers beginning at 500 kw 0. Todays hybrid propulsion technology can be a viable option. Naval dc solar electric propulsion systems for the. Serial hybrid electric propulsion system with development two redundant power paths 100 kw compatible different with rotax 912 and. In case of conventional propulsion system the propeller is driven by main engine which is running on heavy oil and in addition to it we were having another diesel.
The distribution system consists of switchboards, transformers and frequency converters. On the other hand, in the case of a vessel with dieselelectric propulsion plant, the electric and the propulsion systems are. The number of power generators to be installed was determined to be between 2 and 4, based on the. These systems are based on the principle of speed controlled ac motors driving the propeller directly or by gearing. Dieselelectric marine propulsion compared to direct diesel drives, diesel electric propulsion systems are technically and operationally superior in virtually all applications. As detailed in the section technology needs, below, hybridelectric and all. History and recent advancements of electric propulsion and. Pdf a diagnostic of dieselelectric propulsion for ships.
Furthermore, these tests were made before the introduction of asymmetric fin, xtail and ado, which can improve the efficiency of the azipod system overall by up to four percent. Diesel electric marine propulsion compared to direct diesel drives, diesel electric propulsion systems are technically and operationally superior in virtually all applications. Fully electric propulsion on a passenger ship becomes possible. Modeling of diesel and dieselelectric hybrid propulsion. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting of an electric motor or engine turning a propeller, or less frequently, in pumpjets, an impeller. Diesel electric systems have been in use to propel vessels for more than 100 years.
Using an electric propulsion system, where the energy transmission is electrical and the propulsion and thruster are variable speed electrically driven, fuel consumption can be reduced significantly for many vessel types with environmental benefits. Hence, the efficiency of a diesel electric system, from diesel engine shaft, to electric propulsion motor shaft, is normally between 0. Comparison of coges and dieselelectric ship propulsion systems. Electric propulsion systems and hybrid vehicles chalmers. Energy saving technology of the dieselelectric propulsion system. Moreover, at least one electric motor is responsible totally or partially for the vehicle propulsion. The beauty of diesel electric propulsion is the diesel engines are turned on only as they are needed, and if an engine is lost, the remaining diesel engine generators on the system can still provide power to both shaft lines. Since then, the shipping industry has started to introduce electric propulsion as a solution to improve fuel efficiency and reduce emission. This paper will, in particular, attempt to explain some of the most elementary terms used regarding ship types, ships dimensions and hull forms and clarify some of the parameters pertaining to hull resistance, propeller conditions and the diesel engines load diagram. With mechanical propulsion, if a ship loses one of two diesel engines, it loses fifty percent of its propulsion power.
While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting a motor or engine turning a propeller, or less frequently. Future trends of electrical propulsion and implications to. Pdf new hybrid diesel electric propulsion system for trawlers. Advanced,electric propulsion system concept for electric. This section includes select lecture notes for the course excluding lessons on aircraft propulsion and jet engine rotordynamics. Nov 20, 2007 with mechanical propulsion, if a ship loses one of two diesel engines, it loses fifty percent of its propulsion power. In this section selecting the various components of eligible propulsion system can be concluded such as.
Pdf mathematical modelling of dieselelectric propulsion. Recent renewed interest in diesel electric marine propulsion creates a need for more understanding of how the systems work and how they are laid out. The swedish navys gotland class submarines use two stirling cycle engines as an adjunct to their main diesel electric engineering plants to provide underwater endurance up to several weeks. The beauty of dieselelectric propulsion is the diesel engines are turned on only as they are needed, and if an engine is lost, the remaining dieselengine generators on the system can still provide power to both shaft lines.
Electric propulsion with diesels used as prime movers. This was the first air independent propulsion system to enter regular submarine service. Other devices, such as magnetoplasmadynamic thrusters, vasimr and pulsed induction thrusters, may offer future primary. Turboelectric propulsion research is one of the four highpriority approaches identified in this report for developing advanced propulsion and energy system technologies that could be introduced into service during the next 10 to 30 years to reduce co 2 emissions. As an example of changing times in marine propulsion, consider the two cruisers. Despite many diesel engines advantages, their primary disadvantage is emission of pollutants. Drivability and fuel consumption models of the most important vehicle propulsion systems ic engines, electric motors, short range energy storages, batteries and fuel cells, drive trains and vehicles, etc. Thus, each hybrid system involves an electric motor, a generator, electrical storage devices, a means to charge them and a control system. Review of allelectric and hybridelectric propulsion. The concept of electrical propulsion systems is not new. Edition october 2015 page 3 propulsion, power generation and auxiliary systems. Most of these kinds of spacecraft propulsion systems work by electrically expelling propellant reaction mass at high speed electric thrusters typically use much less propellant than chemical rockets because they have a higher exhaust speed operate. The latter powers deep space 1, nasas successful ion propulsion vehicle, which now cruises the solar system 7 million miles 220 million kilometers from earth, testing inspace hardware and electric propulsion capabilities. An electrical system in a vessel with electric propulsion normally consists of an electricity generation power plant, a distribution system and a motor for propulsion.
All data found in the survey was provided by participating original equip ment manufacturers oems. Marine electric propulsion marine propulsion is the mechanism or system used to generate thrust to move a ship or boat across water. These systems are based on the principle of speed controlled ac or dc motors driving the propeller directly or by gearing. The diesel electric propulsion system uses a diesel engines to turn generators which in turn power electric motors that turn a drive or prop shaft. Mathematical modelling of dieselelectric propulsion systems. Lino guzzella antonio sciarretta vehicle propulsion systems. Theres a dilemma that prevents dieselelectric propulsion from being widely adopted. Synonymous with dieselelectric propulsion, scr drive takes its name from the siliconcontrolled rectifiers scr units at the heart of the system.
Electric propulsion components with high power densities for aviation. Mathematical modelling of dieselelectric propulsion. Diesel electric propulsion systems are used on ships with special operational requirements. Electrically powered spacecraft propulsion wikipedia. Fuel types include diesel fuel, heavy fuel and natural gas. Electric propulsion systems are designed according to. The wider engineering team have sourced experienced and proven suppliers to adapt diesel electric technology to a super yacht. Vehicle propulsion systems institute for dynamic systems. Electric propulsion, electric ship, integrated power system, induction motor, permanent magnet motor, hts synchronous motor, dc homopolar motor, podded propulsion.
New orders are broken into dieselelectric, mechanical drive and auxiliary generating set orders. Marine propulsion is the mechanism or system used to generate thrust to move a ship or boat across water. A medium speed diesel engine has a low fuel consumption at the optimum operation point. A typical design comprises three or more dieselpowered generators in parallel, feeding fixedvoltage alternating current to a common switchboard diagram. Diesel electric propulsion maritime survey australia. Electric propulsion system for ships the marine express. Proposed electrical ship propulsion system consider to the title of this article and the presented information. As a result of these features electrical propulsion systems are used particularly for cruise liners, ferries, cable and pipe layers, research vessels, icebreakers. The electric propulsion system for icebreakers described below had to have a highpower electric motor that offers load characteristics that can provide a great deal of torque at low speed, and so it was developed by.
Diesel electric propulsion systems are used on ships with special requirements. Security classification of this page unclassified 19. Dieselelectric propulsion systems low noise and vibration electric propulsion drives are unsurpassed for their quietness of operation. Photos courtesy of glacier bayglacier bays electric motor, the keystone of its full propulsion system, is on the cutting edge of dieselelectric pleasure boating. Reference herein to any specific commercial product, process, or service. A dieselelectric transmission system includes a diesel engine connected to an electrical generator, creating electricity that. Hundreds of diesel electric packages in operation globally regular integration meetings begin at vessel concept and continue through commissioning customized packages for constant and variable speed propulsion feature cummins marine auxiliary engines matched to customers choice of alternator, including cum. Energy saving technology of the dieselelectric propulsion. Oct 03, 2007 the option of drawing the vessels ac house power from the propulsion system when under way, eliminating the need to run the vessels genset, can improve fuel efficiency. Kerrebrock and subsequently adapted by manuel martinezsanchez.
The most reliable and low noise design is the direct drive. The engines are normally operated on heavy fuel oil. While in conventional icebased vehicles the energy carrier is a fossil fuel, electric and hybridelectric propulsion systems are characterized by the presence of an electrochemical or electrostatic energy storage system. Overall, the fuel economy of the diesel electric drive will be close to or as good as what can be achieved using a directdrive system. Is this a safer, more efficient solution for your vessel. Diesel electric propulsion systems low noise and vibration electric propulsion drives are unsurpassed for their quietness of operation. A brief guideline how to engineer a dieselelectric propulsion system. New study on dual fuel diesel electric propulsion for lng. Dieselelectric marine propulsion marine diesel engine.
Diesel electric drive takes less space than the equivalent directdrive twostroke engine allowing the aft section to be slimmer and giving better flow over the propeller. The arrival of a unique experimental demonstrator at nasa armstrong flight research center on february 26 may herald a future in which many aircraft are powered by electric motors. Renewed interest in dieselelectric marine propulsion. Dieselelectric propulsion pushes ahead professional. Wider 150 genesi full electric propulsion with battery storage. The system that drives most multidirectional tugs uses a modification of this system whereby the electric propulsion system drives the socalled paddlewheels that create a water thrust.
This article covers the two main types of electrical drive systems currently in use frequency controlled a. Our innovative dieselelectric propulsion systems provide up to 28 mw of power for a wide variety of vessels with special requirements. In order to meet the challenge of high operating cost and marine pollution, ships propulsion system have changed from conventional power system to electric propulsion system. C motors and gives you a clear picture on the layout of the diesel electric marine propulsion systems. Ion and hall thrusters march 2008 the research described in this publication was carried out at the jet propulsion laboratory, california institute of technology, under a contract with the national aeronautics and space administration. The concept of electric propulsion is over 100 years old with batterypowered vessels recorded in russia and germany around 1870. The main engine efficiency can be improved with a new hybrid diesel electric propulsion system notti et al. Manager, ecology engineering group, engineering division, ihi marine united inc. More than just electric drive, the ips enables a ships electrical loads, such as pumps and lighting, to be powered from the same electrical source as the propulsion system. Find materials for this course in the pages linked along the.
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