KR20140137677A - Engine generation system using the shaft of the main engine - Google Patents

Engine generation system using the shaft of the main engine Download PDF

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Publication number
KR20140137677A
KR20140137677A KR1020130058481A KR20130058481A KR20140137677A KR 20140137677 A KR20140137677 A KR 20140137677A KR 1020130058481 A KR1020130058481 A KR 1020130058481A KR 20130058481 A KR20130058481 A KR 20130058481A KR 20140137677 A KR20140137677 A KR 20140137677A
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KR
South Korea
Prior art keywords
power
shaft
engine
generation unit
power generation
Prior art date
Application number
KR1020130058481A
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Korean (ko)
Inventor
박영준
오영호
장은진
Original Assignee
현대중공업 주식회사
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Priority to KR1020130058481A priority Critical patent/KR20140137677A/en
Publication of KR20140137677A publication Critical patent/KR20140137677A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J3/00—Driving of auxiliaries
    • B63J3/02—Driving of auxiliaries from propulsion power plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J3/00—Driving of auxiliaries
    • B63J2003/001—Driving of auxiliaries characterised by type of power supply, or power transmission, e.g. by using electric power or steam
    • B63J2003/002—Driving of auxiliaries characterised by type of power supply, or power transmission, e.g. by using electric power or steam by using electric power

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

Abstract

The present invention relates to an engine generation system of a ship. Regarding an engine generation system which distributes power to several loads of the ship through a power control unit after generating the power in a power generation unit where a bogie engine generation unit is installed, the present invention relates to an engine generation system using a shaft of a main engine which can use rotatory power of the shaft of the main engine, and supply power in various ranges of engine RPM of the shaft at the same time, and can also improve efficiency and stability of power supply in a complementary manner of the bogie engine generation unit and the a shaft generation unit, by being provided with the shaft generation unit using rotary power of the main engine in the power generation unit, and selecting or combining power which is produced in the bogie engine generation unit and the shaft generation unit respectively and then supplying the same to a load.

Description

[0001] The present invention relates to an engine power generation system using a main engine shaft,

[0001] The present invention relates to an engine power generation system for a ship, and more particularly, to a power generation unit comprising a plurality of view engines, and a shaft power generation unit using a shaft- To be supplied to a plurality of loads so that power generation is possible in various rotational speed ranges of the shaft axis of the main engine and power supply efficiency and stability can be improved, will be.

Generally, ships are equipped with a main engine for driving a propeller to propel a ship, and a plurality of engines for power generation for supplying electric power to various equipments and equipment mounted on a ship.

Therefore, the ship is provided with an engine power generation system so that power generated from a plurality of view engines can be supplied to various loads in the ship.

Hereinafter, an engine power generation system of a conventional ship will be briefly described with reference to FIG.

1 is a power system diagram of a conventional marine engine power generation system.

As shown in the figure, the conventional engine power generation system includes a plurality of view engines 100, a diesel generator (DG) 120, a power distributing unit 150, and a power control unit 300.

Here, the view engine 100 is a diesel engine. The diesel engine 120 operates the diesel generator 120 to generate electric power. The generated electric power is ultimately transmitted through the power distributing unit 150 to various loads in the ship, Such as a refrigerator, a lighting device, and the like.

Here, the power control unit 300 is a general power management system (PMS) for controlling the engine power generation system of the ship.

Accordingly, the power control unit (PMS) 300 integrally controls the production and distribution of electric power through the power generation of the view engine 100, and controls the view engine 100, the diesel generator 120, and the power distributing unit 150 The power generation state and the variation of various loads are comprehensively grasped, and then appropriate power is selectively supplied to each load.

However, in the conventional ship power generation system as described above, power generation and power supply are performed using only a plurality of view engines, so that not only the fuel consumption by the view engine is high but also the power supply efficiency and stability are poor .

Therefore, in order to solve the above problems and improve the energy efficiency, in order to supplement the power generation by the view engine 100, the turbine and the generator are operated by using waste energy such as exhaust gas discharged from the main engine, However, in the case of power generation using the exhaust gas of the main engine as described above, not only the structure is complicated but also the power generation efficiency is low. In addition, since the power generation efficiency is low and the exhaust gas amount varies according to the operating state of the main engine, There is a problem that power supply is difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a power generating unit, a power distributing unit, and a power control unit, And the power generated by the view engine generator and the shaft generator is selected or combined so that the power supply is performed in accordance with the variation of the load and the operation state of the ship, A main engine shaft capable of supplying electric power in various rotational speed ranges of the shaft shaft and improving the efficiency and stability of the power supply by reducing the amount of fossil fuel by complementing the view engine and the shaft shaft power generator And to provide a used engine power generation system.

In order to achieve the above object, the present invention provides an engine power generation system for generating power in a power generation unit provided with a view engine power generation unit and then distributing the power to various loads of a ship through a power control unit, Further comprising a shaft shaft power generation unit that generates power by using a shaft shaft torque of a main engine that provides a propulsion force to the shaft engine, .

Here, the shaft shaft power generator includes a shaft shaft generator directly connected to the shaft shaft of the main engine and generating power by the rotational force of the shaft shaft, and a frequency converter for converting the frequency of the power generated by the shaft shaft generator.

In addition, the power control unit may select or merge the view engine power unit and the shaft shaft power unit to deliver power to the load during a vessel operation, and power may be supplied only through the view engine power unit at the time of berth.

In addition, when the load is high at the time of ship operation, the power control unit causes the view engine power generation unit and the shaft power generation unit to simultaneously supply power when the power supply to the shaft power generation unit is insufficient. When the load is low, Power can be supplied using only the part.

Meanwhile, it is preferable that the shaft-shaft power generation unit is capable of generating power from 1000 kW to 9000 kW corresponding to the rotation speed of the shaft shaft.

As described above, according to the present invention, the view axis engine and the shaft axis generator of the main engine are merged with each other as a power source, so that power can be supplied selectively or in combination according to each load variation and power supply time in the ship. It is possible to reduce environmental pollution through minimization of use, and the two power sources complement each other, thereby improving power supply efficiency and stability, thereby improving power supply responsiveness and reliability as well as reducing power generation cost There is an effect that can be done.

FIG. 1 is a schematic power diagram of a conventional general ship power generation system,
2 is a power system diagram of an engine power generation system using a main engine shaft according to the present invention,
Fig. 3 is a schematic diagram of a power distribution unit and a load connection of the present invention,
4 is an operational flowchart of the present invention according to the ship's operation and load conditions.

Hereinafter, the present invention will be described in detail with reference to the drawings.

Here, FIG. 2 shows a power system diagram of an engine power generation system using a main engine shaft according to the present invention, and FIG. 3 shows a configuration of a power distribution unit and a load connection of the present invention.

2, the present invention includes a power generation unit 20, a power distribution unit 60, and a power management system (PMS) 90 for controlling power supply.

Here, the electric power generating section 20 is a part for generating electric power, and includes a plurality of view engine generating sections 40 and a shaft shaft generating section 30. [

The view engine power generation unit 40 uses a plurality of view engines 41 as a power generation diesel engine and is connected to a plurality of view engines 41, The generator 45 is operated to produce electric power.

The view engine power generation unit 40 is connected to the power distribution unit 60 as in the conventional power generation system and generates electric power in cooperation with each load 200 by a power control unit (PMS) And the generated power is supplied to each load 200 by the power distributing unit 200. [

At this time, since the view engine power generation unit 40 operates the diesel engine to generate electric power, it is not affected by the climatic conditions and time, and can continuously generate electricity when necessary. Also, the rotation speed RPM of the view engine 41, It is possible to supply electric power corresponding to the voltage or frequency required by each load 200 appropriately.

The power generator 20 further includes a shaft shaft generator 30.

The shaft shaft power generation unit 30 generates power by using the rotational force of a shaft shaft 15 of a main engine (ME) 10 which is axially coupled to a propeller 17 so as to provide a propulsion force to the ship. A shaft generator (SG) 31 and a frequency converter 35 (frequency converter).

Here, the main engine 10 is a main engine that allows the ship to be operated by adding propulsion to the ship. The propeller 17 installed at the stern of the ship is rotated to propel the ship.

At this time, the propeller 17 is connected to the main engine 10 by the shaft shaft 15 (propulsion shaft), thereby being propelled by the operation of the main engine 10 to propel the ship.

The shaft shaft generator 31 is directly connected to the shaft shaft 15 and generates electric power by using the rotational force of the shaft shaft 15. The shaft shaft generator 15 may be equipped with a general generator that generates electric power by directly using shaft rotation.

On the other hand, a frequency converter (Freqency Converter) 35 is connected to the shaft shaft generator 31.

Since the view engine power generation unit 40 can operate and set the operating conditions (the number of revolutions and the like) of the view engine 41 arbitrarily, it is easy to produce and supply electric power in accordance with the power characteristics required by each load, In the case of the engine 10, since the number of revolutions changes frequently depending on the load due to the ship operation and it is difficult to arbitrarily adjust the number of revolutions, the power converter 35 is used to arbitrarily adjust the power characteristics to fit each part .

That is, since the rotation speed RPM of the shaft shaft 15 is proportional to the frequency of the produced electric power, the change in the rotation speed of the main engine 10 converts the frequency of the produced electric power.

Therefore, the frequency converter adjusts the frequency fluctuation of the power according to the change in the rotation speed of the main engine 10 so that a constant frequency is maintained.

As shown in FIG. 2, the frequency converter 35 includes a converter for converting AC into DC, an inverter for converting DC into AC, and a rectifying circuit. In the conversion process, So that the frequency of the alternating current can be arbitrarily adjusted to a desired frequency.

The frequency converter 35 may be a general product used for frequency conversion.

On the other hand, since the power generated by the shaft shaft generator 31 in the shaft shaft power generator 30 is an AC power source, the frequency converter 35 may repeatedly convert it into direct current and alternating current, It will be adjusted.

At this time, the shaft shaft generator 31 and the frequency converter 35 are connected and adjusted by the power controller 90 so that power generation and frequency conversion are performed in accordance with the operating state of the main engine 10 by the power controller 90 .

Here, the frequency converter 35 transmits AC power having an arbitrarily adjusted frequency to the power distributing unit 60 so that power is supplied to the power distributing unit 60 at each power.

3, the power distributing part 60 functions to distribute electric power corresponding to each load of the electric equipment such as a motor, a light, a refrigerator, etc. in the ship, And a safety device 65 such as a circuit breaker, a switch, an instrument, and a relay.

The power control unit 90 is connected to the view engine power generation unit 40, the shaft power generation unit 30 and the power distribution unit 60 to control the entire power system. (40) and the shaft shaft power generation unit (30) are selected or combined to supply the power according to the power demand characteristics of the load.

Accordingly, the power control unit 90 may generally include a transmission / reception module, a power monitoring unit, a power supply control unit, and a safety unit.

Accordingly, the power control unit 90 receives or transmits data from each of the view engine power generation unit 40, the shaft shaft power generation unit 30, the power distribution unit 60, and the load 200 via the transmission / reception module, And information on the power generation amount, power, and the like, and controls the power supply appropriately according to each load.

At this time, the power monitoring unit plays a role of monitoring the power quality, and monitors the power state and quality such as the amount of power, voltage, current, etc. and acquires information thereon. And the amount of power supplied to the front part 60 is adjusted according to a specific condition or timing to be supplied to the load.

Therefore, the power control unit (PMS) 90 considers the power generation state of the power generation unit 20, the power amount, the power quality, and the like, And so on, thereby controlling the entire power supply and distribution system so that the power supply is appropriately and stably performed.

 The power management system (PMS) 90 determines the voltage or frequency required by each load and selectively activates the plurality of view engines 41 for proper power supply thereto, 41 and the shaft shaft power generation unit 30 are selected or combined to supply power to the load 200 through the power distribution unit 60. [

AC power of 440 V and 60 Hz is generally used for motors and AC power of 220 V and 60 Hz for electric appliances such as refrigerators are to be used so that the power control unit 90 controls the view engine 41 Or the power of the shaft shaft 15 is selectively supplied.

The main control unit 90 controls the frequency converter 35 so that the rotation speed RPM of the main shaft 10 of the main engine 10 varies depending on the speed or load of the main engine 10, So that AC power of a constant frequency is continuously supplied regardless of the change in the number of revolutions of the main engine 10.

The operation flow chart of the present invention will be described in detail with reference to the following 4.

4 is an operation flowchart of the present invention according to the operation and load condition of the ship.

First, the power control unit (PMS) 90 is connected to the navigation system of the ship to check whether or not the ship is operating so as to determine whether the ship is in operation or anchorage.

In this case, when the ship is in a running state, the main engine 10 rotates the shaft shaft 15 to operate the propeller 17, so that it is possible to generate electric power from the shaft shaft generator 30.

 On the other hand, the power control unit 90 checks the amount of the load 200 to be finally used.

At this time, when the demand for the load is low and the demand can be satisfied only by the power generation of the shaft shaft 17, power is supplied to the load 200 by power generation by the shaft shaft 17, Thereby minimizing the use of fossil fuels.

When the demand for the load is high or the generation amount of the shaft shaft 17 of the main engine 10 is small and it is difficult to satisfy the demand only by the power generation of the shaft shaft 17, So that the electric power supply can be performed.

The power generating unit 20 includes a power generating unit 20 and a power distributing unit 60 and a power controlling unit 90. The power generating unit 20 includes a power generating unit 20 and a main engine 10, Shaft power generation section 30 that utilizes the rotational force of the main engine 10 to select and combine the two power sources according to the variation of the load 200 and the operational state of the ship, It is possible to supply electric power in various rotational speed ranges of the shaft 15 as well as to reduce the amount of fossil fuel and the efficiency of electric power supply through the power supply by complementing the view engine generator 40 and the shaft shaft generator 30 The stability can be improved.

While the present invention has been described by way of example with reference to the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities.

10: main engine 15: shaft shaft
17: Propeller 20: Power generator
30: shaft shaft power generator 31: shaft shaft generator
35: Frequency converter 40: View engine generator
41,100: view engine 45,120: diesel generator
60,150: Distribution part 61: Main switch board
65: safety device 90, 300:
200: Load

Claims (5)

1. An engine power generation system for generating power in a power generation unit having an engine power generation unit and distributing the power to various loads of a ship through a power control unit,
In the power generation unit,
Further comprising a shaft shaft power generation section that generates power using a shaft shaft rotation force of a main engine that provides a propulsion force to the ship,
Wherein the power generated by the view engine generator and the shaft generator is selected or merged to be supplied to the load. The method according to claim 1,
Wherein the shaft-
And a frequency converter for converting a frequency of electric power generated by the shaft shaft generator, wherein the shaft generator is directly connected to the shaft shaft of the main engine and generates power by the rotational force of the shaft shaft. The method according to claim 1,
The power control unit includes:
And the power is supplied to the load by selecting or merging the view engine power generation unit and the shaft shaft power generation unit at the time of vessel operation and power is supplied only through the view engine power generation unit at the time of berth. Engine power generation system. The method according to claim 1,
The power control unit includes:
When the load is high at the time of ship operation, the view engine power generation unit and the shaft shaft power generation unit simultaneously supply power when the power supply is insufficient only by the shaft shaft power generation unit, and when the load is low, Is supplied to the main engine shaft (1). 5. The method according to any one of claims 1 to 4,
Wherein the shaft-shaft power generator is capable of generating power from 1000 kW to 9000 kW in accordance with the rotation speed of the shaft shaft.
KR1020130058481A 2013-05-23 2013-05-23 Engine generation system using the shaft of the main engine KR20140137677A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160144183A (en) 2015-06-08 2016-12-16 대우조선해양 주식회사 Hybrid propulsion vessel with shaft generator and battery
KR20170079873A (en) * 2015-12-31 2017-07-10 대우조선해양 주식회사 Operation Method of Engine for a Ship
WO2018194228A1 (en) * 2017-04-18 2018-10-25 대우조선해양 주식회사 Ship power generation system and method
KR102351597B1 (en) 2020-08-24 2022-01-17 대우조선해양 주식회사 Operating method of isolating shaft generator for additional system power supply
KR102388425B1 (en) * 2021-09-15 2022-04-20 선보공업주식회사 Ship fuel supply system and method performing thereof
KR102388424B1 (en) * 2021-09-15 2022-04-20 선보공업주식회사 Ship fuel supply system and method performing thereof
KR20220092065A (en) * 2020-12-24 2022-07-01 대우조선해양 주식회사 Propulsion system of Ship including Shaft Generator and Method of Calculating the Available power of Shaft Generator
KR20220167922A (en) 2021-06-15 2022-12-22 대우조선해양 주식회사 Method For Connection And Control Of Shaft Generator-Based Battery Hybrid Power System Using Wind Turbine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160144183A (en) 2015-06-08 2016-12-16 대우조선해양 주식회사 Hybrid propulsion vessel with shaft generator and battery
KR20170079873A (en) * 2015-12-31 2017-07-10 대우조선해양 주식회사 Operation Method of Engine for a Ship
WO2018194228A1 (en) * 2017-04-18 2018-10-25 대우조선해양 주식회사 Ship power generation system and method
KR20180116920A (en) * 2017-04-18 2018-10-26 대우조선해양 주식회사 Power generating system and method for ship
CN110520353A (en) * 2017-04-18 2019-11-29 大宇造船海洋株式会社 Power generation system of ship and method
JP2020516514A (en) * 2017-04-18 2020-06-11 デウ シップビルディング アンド マリン エンジニアリング カンパニー リミテッド Power generation system and power generation method for ships
CN110520353B (en) * 2017-04-18 2021-11-16 大宇造船海洋株式会社 Power generation system for ship and power generation method using same
KR102351597B1 (en) 2020-08-24 2022-01-17 대우조선해양 주식회사 Operating method of isolating shaft generator for additional system power supply
KR20220092065A (en) * 2020-12-24 2022-07-01 대우조선해양 주식회사 Propulsion system of Ship including Shaft Generator and Method of Calculating the Available power of Shaft Generator
KR20220167922A (en) 2021-06-15 2022-12-22 대우조선해양 주식회사 Method For Connection And Control Of Shaft Generator-Based Battery Hybrid Power System Using Wind Turbine
KR102388425B1 (en) * 2021-09-15 2022-04-20 선보공업주식회사 Ship fuel supply system and method performing thereof
KR102388424B1 (en) * 2021-09-15 2022-04-20 선보공업주식회사 Ship fuel supply system and method performing thereof

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