Diesel electric propulsion systems pdf

The concept of electric propulsion is over 100 years old with batterypowered vessels recorded in russia and germany around 1870. Pdf the main objective of this paper is to present an analysis on diesel electric. During world war ii, diesel electric submarines made up a majority of the propulsion systems used by the u. Displacement is thus equal to the total weight, all told, of the relevant loaded ship, nor. Control and optimization of electric ship propulsion systems. Naval dc solar electric propulsion systems for the marine. Electric propulsion systems, electric drive systems. Submarine propulsion systems how do submarines work. Torqeedo is also now using bmws i8 electric car batteries, marinized for boating, in its deep blue 40 and 80hp propulsion systems. Auxiliary diesel engines will no longer be needed and the. The 48v battery has an eightyear capacity warranty. Diesel electric propulsion systems are used on ships with special operational requirements. This document, and more, is available for download from. 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.

The electric propulsion system consists of a prime mover which may be one of two types. Large drives such as diesel electric propulsion systems normally get their electrical power from three or more diesel engines. Oct 25, 2017 electric quietdrive by oceanaire yachts. Review of allelectric and hybridelectric propulsion. Diesel electric propulsion dep systems have been widely used for propulsion and power generation of a number of ships including lng carriers, icebreakers, drilling units, naval vessels and. Diesel electric propulsion systems and drives have been developed and brought into common use by the marine industry over the past 30 years.

Mathematical modelling of dieselelectric propulsion systems. Here is a great potential for energy saving in using only the number of diesel engines needed for the desired propulsion and the other energy needs on board. These systems are based on the principle of speed controlled ac motors driving the propeller directly or by gearing. The old way of propulsion has a diesel engines output usually going through a gear box, then to a shaft line going back to the propeller. Electric propulsion systems for ships topics yoshifumi ajioka kiyoshi ohno increasing use of electric propulsion systems on ships as is the case with general automobiles that are driven on land, the main type of engine used on ships is the internal combustion engine motors such as diesel engines and gas turbines. At reduced propeller speeds the number of supplying generators can be matched according to the power demand. The first ships with diesel electric propulsion were in operation as early as 1904 and the concept has.

Most of the drives used in electric propulsion systems on ships require big. The electric propulsion plant onboard is designed and delivered by stadt, similar to what was earlier delivered to the sister vessel sanco star one year earlier, operated by georadar in brazil. The unique combination of integral system design and dedicated naval architecture for the perfectly matched hull shape result in unrivaled performance. Nov 20, 2007 paul murray, operations manager at converteam, inc. Technical innovation allows diesel generators to burn gas. Lithium ion batteries are superior to other battery storage technology.

Rms qm queen mary was a steamer cruise of 29 pax, built in 1936 and retired in 1967. A brief guideline how to engineer a dieselelectric propulsion system. It sets out how we got to the current technological solutions and examines a wide range of possibilities for future ship powering options. In 1893, one of the first electric boats electricity carried passengers on the river thames in england. Generator mode ptomode the main engine provides not only the power for ship propulsion, it also supplies the electric power needed for the ships consumers. They burn marine diesel oil mdo, or heavy fuel oil hfo when sulfur emissions. These systems are based the principle af speed controlled the gearing. Flexibility and maximum efficiency optimally combined. A representative configuration fig 4 consists of high speed electric motors 900 or 1200 rpm, geared trans. Naval dc solar electric propulsion systems for the. On the surface, the ambient atmosphere charged the engine, but underwater, the oxygen required. Systems in the university of michigan 2017 doctoral committee.

Abc gensets are widely used around the world as main power gensets in tankers, dredgers, offshore vessels. Dieselelectric propulsion pushes ahead professional. As an example of changing times in marine propulsion, consider the two cruisers. Maritime electrical installations and diesel electric propulsion trpa. 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. With a decade of experience and hundreds of diesel electric packages in operation globally, cummins is one of the pioneers in diesel electric propulsion. In the past these systems were usually diesel engine driven d. 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. Multiple generators provide electricity to propulsion motors improved fuel consumption by 35% vs. 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. Airindependent propulsion aip technology creates a new undersea threat page 3 of 6 heavily modified commercial diesel engine with a small batterypowered electric motor as a backup. Propulsion for research and survey ships, as well as fishery supervision vessels wartsila has delivered the low noise dieselelectric propulsion systems for many research and survey vessels. The renk aed electric drive is suitable for the following areas of application. Using an electric propulsion system, where the energy transmission is electrical and the propulsion and thruster are variable speed electrically driven, fuel consumption can.

This report, prepared by an expert working group at the royal academy of engineering, gives a fascinating insight into the development of ship propulsion systems. Benefits for the environment the main propulsion and thruster on this bulk carrier, with a 499 gross tonnage, utilize variable speed electric propulsion, which saves energy and is environmental. Consult wartsila sam electronicss entire dieselelectric propulsion systems catalogue on nauticexpo. Diesel electric systems by man energy solutions are designed to meet customers highest requirements. Professor heath hofmann, cochair professor jing sun. The exploitation advantages of diesel electric propulsion with the last generation of podded drives using permanent magnet electrical motors towards diesel mechanic propulsion systems, in the. Electric propulsion systems are designed according to the power station. Rail propulsion systems practical rail modernization. In marine appli cations, nearly all the energy is produced by diesel engines. Hence, the efficiency of a diesel electric system, from diesel engine shaft, to electric propulsion motor shaft, is normally between 0. 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.

There are many advantages and some disadvantages of this system. This was a departure from earlier submarine power systems, which were direct drive types, little changed from the earliest boats. The hybrid option enables a booster mode as well as slow steaming. Our portfolio spans from fleets of solar electric and hybrid catamarans to solar electric race and speed boats. Dieselelectric propulsion systems are used on ships with special operational requirements. Eprox is an innovative approach of a fuel saving electric propulsion system. Ihimu has developed an energysaving, environmentally friendly dieselelectric propulsion system with a contrarotating propeller. Dieselelectric systems are also used in submarines and surface ships and some land vehicles. The previously mentioned azimuth thrusters are also an example of diesel electrical propulsion, but they are mentioned separately because they are quite commonly known, and more developed than different systems in this same category. Not only is the dieselelectric drive train lighter than a twostroke engine. The concept of electrical propulsion systems is not new. Among all the prospective alternate power sources, electrical propulsion system is one of the best alternatives in todays time. Pdf a diagnostic of dieselelectric propulsion for ships.

These batteries are modular and can be built around a boats design. Dec 11, 2016 this video will give you a general overview of the most common propulsion and manoeuvring systems used to day. Azipod units can rotate 360 degrees to increase maneuverability and operating efficiency, with the proven ability to cut fuel consumption by up to 20 percent compared to traditional shaftline propulsion systems. The power transmission system is the core item of the entire propulsion plant and offers the ability to combine different prime movers such as diesel engines, gas turbines and electric motors and link them with various propulsors like cpp, fpp or waterjet. Electric propulsion system for ships the marine express. Unlike chemical systems, electric propulsion requires very little mass to accelerate a.

Control and optimization of electric ship propulsion systems with hybrid energy storage by jun hou a dissertation submitted in partial ful llment of the requirements for the degree of doctor of philosophy electrical engineering. With mechanical propulsion, if a ship loses one of two diesel engines, it loses fifty percent of its propulsion power. Dieselelectric propulsion systems wartsila sam electronics pdf. These propulsion systems are based on the principle of speed controlled dc or ac motors driving the propeller directly or via gears. Corvettes, frigates, submarines, research vessels, cruise ships, and mega yachts. 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. These systems are based on the principle of speed controlled ac or dc motors driving the propeller directly or by gearing. Electric propulsion systems are designed according to the power station principle. The use of electrical power enhances the propulsive performances of the ep thrusters compared with conventional chemical thrusters. Their applications were generally limited to vessels that required a degree of low speed maneuvering.

Developing a new methodology for evaluating diesel. This is the equivalent of 17 trips around the world. 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. See the first prototype version of our 330hp drive operating near the end of the video. History and recent advancements of electric propulsion and. The hybrid propulsion system combines the best from two systems. Steam propulsion conventionalnuclear fueled steam propulsion gas turbines diesel engines electric drive integrated power system steam propulsion first type of propulsion to replace sail power. The packages include everything from gensets to propulsors, including switchboards, converters and emotors. Mathematical modelling of dieselelectric propulsion systems for marine vessels jan fredrik hansen1,3, alf ka. The leading edge asynchronous propeller technology leaptech project will demonstrate distributed electric propulsion for future aircraft. T he use of electric propulsion in certain vessel types is wellknown.

Naval dc is your specialist with more than 12 years of experience for electric propulsion systems. Fossen2 abstract this article presents a mathematical model of a complete dieselelectric propulsion system, including components as diesel generators, distribution network, variable speed thrusterdrives. Research vessels, ferries, tankers, and special purpose vessels have also taken advantage of increased flexibility and fuel efficiency with. A dieselelectric transmission, or diesel electric powertrain, is used by a number of vehicle and ship types for providing locomotion. They burn marine diesel oil mdo, or heavy fuel oil hfo when sulfur emissions can be tolerated its price is nearly half of the former. C motors and gives you a clear picture on the layout of the diesel electric marine propulsion systems. It combines some great mechanical technology, including a huge, 12cylinder, twostroke diesel engine, with some heavy duty electric motors and generators, throwing in a little bit of computer technology for good measure. Dieselelectric propulsion systems wartsila sam electronics.

Electric propulsion with diesels used as prime movers. The hybrid diesel locomotive is an incredible display of power and ingenuity. Integrated electric propulsion iep or full electric propulsion fep or integrated full electric propulsion ifep is an arrangement of marine propulsion systems such that gas turbines or diesel generators or both generate threephase electricity which is then used to power electric motors turning either propellers or waterjet impellors. The propulsion system on a vessel can be as simple as a diesel engine directly connected to a propeller shaft, which drives the propeller, or more complex systems containing diesel engines powering an electrical generator, supplying electrical power to an electrical motor through a sophisticated control system. 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. Dieselelectric propulsion plants guideline 20120731. Electric propulsion systems are designed according to. Energy saving technology of the dieselelectric propulsion system. 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. The most reliable and low noise design is the direct drive. It is a modification of the combined diesel electric. Since then, the shipping industry has started to introduce electric propulsion as a solution to improve fuel efficiency and reduce emission.

Dieselelectric propulsion system, azipod propulsion, maneuvering, steering. Pdf comparison of coges and dieselelectric ship propulsion. Pdf mathematical modelling of dieselelectric propulsion. Ship industry has witnessed a long way of research and development to accomplish lowcost and lesspollution ships. Experience with 3 4 propulsion systems on board marine vessels. Electricity use is discussed not only in the light of its many bene. Azipod propulsion enhances the merits of electric propulsion in a number of ways. As a result of these features electrical propulsion systems are used particularly for cruise liners, ferries, cable and pipe layers, research vessels, icebreakers. As is the case with general automobiles that are driven on land, the main type of engine used on ships is the internal combustion engine motors such as diesel. Diesel electric systems are used on ships with special requirements. A diesel ships propulsion plant is similar to a ground diesel plant as used in cogeneration and emergency powersupply, with a wide shaftpower range. This video will give you a general overview of the most common propulsion and manoeuvring systems used to day.

A dieselelectric transmission system includes a diesel engine connected to an electrical generator, creating electricity that powers electric. This can save the atmosphere from up to 24 tonnes of nox a. The future of aircraft propulsion is electric nasa. Dieselelectric transmission is used on railways by diesel electric locomotives and diesel electric multiple units, as electric motors are able to supply full torque at 0 rpm. Ieee proceedings 2015 1 the marine vessels electrical power. Our innovative dieselelectric propulsion systems provide up to 28 mw of power for a wide variety of vessels with special requirements. Developing a new methodology for evaluating diesel electric propulsion volume no 3 dec 2014 journal of marine engineering and technology ropax vessels the requirements for a cruise liner are also valid for a ropax.

Steam vessels lower bor containment systems developed allowing for increase in delivered volumes of lng. 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. Diesel electric propulsion diesel electric propulsion systems require 810% more primary power than diesel mechanical systems losses in additional system components, i. The range of options available to ship owners is greater. Electric propulsion systems for ships hitachi global.

New life for existing locomotives through emissions compliance. However, such a situation will seldom occur, as ships rather infrequently operate in the upper propulsion power range. Used for standby, dp or other operations modes with a benefit of variable propeller speeds. A diagnostic of dieselelectric propulsion for ships dialnet. The main objective of this paper is to present an analysis on diesel electric.