EP0018986A1 - Commande et liaison d'un ensemble moteur pour navires auxiliaires - Google Patents

Commande et liaison d'un ensemble moteur pour navires auxiliaires

Info

Publication number
EP0018986A1
EP0018986A1 EP19790900889 EP79900889A EP0018986A1 EP 0018986 A1 EP0018986 A1 EP 0018986A1 EP 19790900889 EP19790900889 EP 19790900889 EP 79900889 A EP79900889 A EP 79900889A EP 0018986 A1 EP0018986 A1 EP 0018986A1
Authority
EP
European Patent Office
Prior art keywords
direct current
power
control
units
maximum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19790900889
Other languages
German (de)
English (en)
Inventor
Harry William O'brien Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BRIEN JR HARRY WILLIAM O
Original Assignee
BRIEN JR HARRY WILLIAM O
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BRIEN JR HARRY WILLIAM O filed Critical BRIEN JR HARRY WILLIAM O
Publication of EP0018986A1 publication Critical patent/EP0018986A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
    • B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates generally to power trains for powering auxiliary marine vessels, and more particularly to diesel-electric power trains having silicon voltage control rectifiers for vessels subject to a wide range of loads, uses and space limitations.
  • power trains for the purposes note lacked flexibility of operation and control, and within such limitations often operated at less than maximum effi iency.
  • a power train for auxiliary marine vessels that is .controllable by a plurality of power control units in forward and reverse directions from zero to maximum revol ⁇ utions per minute.
  • a power train as stated above comprising a plurality of power producing and power using units that have respectively different performance charact- eristics that are complementary to supply a variety of loads at respectively maximum unit efficiency.
  • figure 1 is a schematic diagram of a typical power train according to the invention
  • figure 2 is a graph of a typical diesel engine performance curve
  • figure 3 is a graph of the per ⁇ formance curve of a shunt wound direct current motor
  • figure 4 is a graph of a propeller revolution per minute curve and vessel speed curve for a towing tug having a conventional reduction gear drive
  • figure 5 is a graph similar to figure 4 but with the tug free running with not tow, and with in ⁇ vention drive data comparably entered
  • figure 6 is a graph
  • figure 7 is a graph similar to figure 5 comparing a two diesel reduction gear drive with two and three diesel electric drives according to the invention.
  • a typical power train 9 of the invention comprises two main diesel motors - alter ⁇ nating current generator units, or power producing units 10, connected in parallel and to a smaller auxiliary diesel motor - alternating current generator, or power producing unit 12, through a transformer 14.
  • a third diesel motor alternating current generator, or power producing unit 10', shown in phantom, may be added to the power train if desired.
  • the output of power producing units 10 is rectified and voltage controlled by power control units 16 comprising four silicon rectifiers 17 and four variable current con ⁇ trols 18.
  • the silicon control rectifiers 17 are connected through magnetic contacts 19 to shunt wound direct current motors, orpower using units 20.
  • Current through the shunt field windings 21 is regulated by said current controls 18 mounted between the output of said power producing units 10 and said field windings or coil 21.
  • Main propulsion motor 20 respectively receive the output of a power control unit 16, the propulsion motors being mounted in pairs to drive respective main propellers and propeller shafts 24, either singly or jointly, through respectively common gear boxes 26.
  • Single motors 20 are provided to drive main auxiliaries such as a bow thruster 28 and a tow winch 30, respectively. These motors are connected, each alternatively to a pair of silicon control rectifiers 17 and each to a variable current control 18 to provide standbys in case of a failure of one.
  • OMPI Wlp ⁇ Referring to figure 2, the performance characteris ⁇ tics of a diesel engine is shown to be that torque and horsepower rises with revolutions per minute until a maximum for all three is reached. Since the diesel of t disclosure cannot safely be run above 900 revolutions pe minute, the torque and horsepower at this speed is maxi at 100%.
  • the performance charact istics of a shunt wound motor is shown to be that torque is constant at 100% from zero through 100% of base revol utions per minute to maximum at 100% of the base revolut ions per minute as voltage to motor is increased. There after revolutions per minute can be increased up to 200% of the base revolutions .per minute without damage by reducing shunt field current. In this mode, horsepower remains constant at 100% and the torque varies downward shown in figure 3.
  • a tug and tow performanc curve shows that the 5578 shaft horsepower, the tug and tow will make 10.7 knots with propeller speed of 145.7 revolutions per minute.
  • the tug of figure 4 is limi by its gear reduction drive to a propeller speed of 150 revolutions per minute to use only 3330 shaft horsepower the 5578 shaft horsepower available to make 14.63 knots.
  • thei electric drive of the invention with one engine of 2600 shaft horsepower can drive the tug 13.9 knots with both propellers at a speed of 140 revolutions per minute using all available shaft horsepower, which is only .73 knots less than the reduct ion gear drive does with two engines.
  • the invention using one engine utilizes the full 2875 brake horsepower available to con- sume only .392 pounds per brake horsepower hour, or 158.3 gallons per hour.
  • the electric drive of the invention will use 734 gallons of fuel per day less to travel the same distance, that is a savings of about 18%.
  • Even if -the power train of the invention has about 10% loss against 3% loss in the gear reduction drive power train, or a net loss of 7%, nevertheless there is a fuel economy gain of 18%, plus half the lubricating oil and half the engine time expended for 8% slower time for the trip.
  • the power train of the invention lends itself to a further economy in the use of limited space available on an auxiliary marine vessel.
  • power producing units may be mounted forward to better trim the vessel without an addition of ballast when loaded or working, and the power using units may be mounted aft to shorten porpeller shafts and save the space required by longer ones.
  • Power control units may be mounted wherever convenient, their mass and occupied space being negligible. It should be understood that the invention can be separately and jointly connected in any arrangement in number and function so that power using units can be run independently of each other off one power producing unit through one or more power control units, or vice versa.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Des ensembles moteurs auparavant utilises pour des navires auxiliaires, tels que par exemple des remorqueurs, manquent de souplesse de fonctionnement, de controle et de localisation, et ne sont pas aussi efficaces qu'ils pourraient l'etre. Afin de resoudre ce probleme, des unites de controle de puissance sont utilisees pour controler les moteurs a courant continu qui sont utilises pour entrainer les helices. Des moteurs diesel (10) sont utilises pour entrainer des generateurs a courant alternatif. Le debit de ces generateurs est fourni aux moteurs a courant continu (20) qui entrainent les helices (24) du navire, les moteurs a courant continu (20) sont controles par des rectificateurs de controle au silicium (17) et des controles de courant sensible (18). Un autre avantage de l'utilisation d'un tel ensemble moteur reside dans le fait que les moteurs diesel (10) peuvent etre places dans la partie avant du navire et les moteurs a courant continu (20) peuvent etre places dans la partie arriere du navire pour des besoins d'assiette ainsi que pour recouvrir l'axe de l'helice. Les benefices de cet ensemble moteur lorsqu'il est utilise dans des navires auxiliaires se traduisent par une economie de carburant et d'espace.
EP19790900889 1978-08-24 1980-03-25 Commande et liaison d'un ensemble moteur pour navires auxiliaires Withdrawn EP0018986A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1978/000072 WO1980000429A1 (fr) 1978-08-24 1978-08-24 Commande et liaison d'un ensemble moteur pour navires auxiliaires

Publications (1)

Publication Number Publication Date
EP0018986A1 true EP0018986A1 (fr) 1980-11-26

Family

ID=22141269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790900889 Withdrawn EP0018986A1 (fr) 1978-08-24 1980-03-25 Commande et liaison d'un ensemble moteur pour navires auxiliaires

Country Status (4)

Country Link
EP (1) EP0018986A1 (fr)
BE (1) BE870343A (fr)
NL (1) NL7808876A (fr)
WO (1) WO1980000429A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2218638T3 (pl) * 2009-02-16 2012-09-28 Christophel Claus D System napędowy dla statku
JP5828023B2 (ja) * 2014-08-08 2015-12-02 ヤンマー株式会社 電気推進船の電気推進システム
JP2015071420A (ja) * 2014-12-04 2015-04-16 ヤンマー株式会社 電気推進船の電気推進システム

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1861750A (en) * 1928-12-10 1932-06-07 Bbc Brown Boveri & Cie Method of regulation of ship-propulsion systems
FR941222A (fr) * 1945-07-28 1949-01-05 Budd Wheel Co Perfectionnements aux dispositifs de commande des moteurs
US3148318A (en) * 1960-04-11 1964-09-08 Allis Louis Co Generator-fed extended range motor control
US3351830A (en) * 1965-02-26 1967-11-07 George C Samson Servo system including armature and field control of plural motors connected in torque opposition
DE2316423A1 (de) * 1973-04-02 1974-10-10 Siemens Ag Schiffspropellerantrieb
US3997824A (en) * 1973-04-20 1976-12-14 General Electric Company Electrical propulsion system and control arrangements therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8000429A1 *

Also Published As

Publication number Publication date
NL7808876A (nl) 1980-03-04
WO1980000429A1 (fr) 1980-03-20
BE870343A (fr) 1979-01-02

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19801112