KR20210112208A - System for generating power of ship - Google Patents

System for generating power of ship Download PDF

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KR20210112208A
KR20210112208A KR1020200040539A KR20200040539A KR20210112208A KR 20210112208 A KR20210112208 A KR 20210112208A KR 1020200040539 A KR1020200040539 A KR 1020200040539A KR 20200040539 A KR20200040539 A KR 20200040539A KR 20210112208 A KR20210112208 A KR 20210112208A
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South Korea
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ship
power
shaft
generator
engine
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KR1020200040539A
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Korean (ko)
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KR102371908B1 (en
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곽상규
노철호
김현재
유승진
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한국조선해양 주식회사
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    • 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
    • B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
    • 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
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/30—Transmitting power from propulsion power plant to propulsive elements characterised by use of clutches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H02K11/046—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H02K11/049—Rectifiers associated with stationary parts, e.g. stator cores
    • 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
    • B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
    • B63H2021/202—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type
    • B63H2021/205—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type the second power unit being of the internal combustion engine type, or the like, e.g. a Diesel engine
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
    • Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels
    • Y02T70/5236—Renewable or hybrid-electric solutions

Abstract

The present invention is to provide a power generation system for a ship that does not operate a propeller by applying a shaft clutch, does not use an existing diesel generator in a section where a ship is anchored, and can generate power with an engine-mounted generator through driving a main engine. According to an embodiment of the present invention, a power generation system for a ship may comprise: a shaft generator which generates electric power according to the operation of the ship's main engine; a shaft clutch formed between a shaft connected to the main engine and a shaft connected to a propeller of the ship, and selectively connecting or disconnecting between the main engine-side shaft and the propeller-side shaft according to control; and a control unit for disconnecting the shaft clutch in a preset harbor mode.

Description

선박 발전 시스템{SYSTEM FOR GENERATING POWER OF SHIP}Ship power generation system {SYSTEM FOR GENERATING POWER OF SHIP}

본 발명은 선박 발전 시스템에 관한 것이다.The present invention relates to a ship power generation system.

최근 IMO 환경규제에 따라 선박 제조 연비 지수(EEDI) 개선을 위한 다양한 방법들이 끊임없이 회자되고 있다. 이를 개선하기 위한 방안 중 축 발전기(shaft generator)를 통하여 선박 제조 연비 지수를 저감하는 방안이 일반적이다.Recently, various methods for improving the ship manufacturing fuel efficiency index (EEDI) according to IMO environmental regulations are constantly being talked about. Among the methods for improving this, a method of reducing the fuel efficiency index of ship manufacturing through a shaft generator is common.

선박에는 선박의 운항 과정에, 선박에 탑재된 각종 장비나 의장품 등에 필요한 전력을 생산하여 제공하기 위한 발전기가 설치된다.A generator is installed in a ship to generate and provide electric power required for various equipment or equipment mounted on the ship in the course of the ship's operation.

일반적으로 선박에 설치되는 발전기는 연료를 연소하여 전력을 생산한다. 이때, 발전기가 소비하는 연료는 디젤유와 같은 화석연료일 수 있다.In general, a generator installed on a ship produces electricity by burning fuel. In this case, the fuel consumed by the generator may be a fossil fuel such as diesel oil.

그러나, 최근 선박이 대형화되는 추세로 인하여, 선박의 운항 과정에 필요한 전력은 증가하고 있고, 전력의 생산 과정에 소비되는 연료도 증가하고 있다. 이 경우, 선박의 운항에 따른 유류비 등의 운영비용이 증가하는 문제점이 있다.However, due to the recent trend of ships becoming larger, the power required for the operation of the ship is increasing, and the fuel consumed in the process of generating the power is also increasing. In this case, there is a problem in that operating costs such as fuel costs according to the operation of the vessel increase.

대한민국 등록특허공보 제10-2067405호Republic of Korea Patent Publication No. 10-2067405

본 발명의 일 실시예에 따르면, 본 발명은 샤프트 클러치(shaft clutch)를 적용하여 프로펠러를 작동시키지 않고 선박이 정박된 구간에서 기존 디젤 발전기를 사용하지 않으며, 메인 엔진 구동을 통한 엔진 마운티드 발전기로 전력 생성이 가능한 선박 발전 시스템을 제공된다.According to one embodiment of the present invention, the present invention does not operate the propeller by applying a shaft clutch, does not use the existing diesel generator in the section where the ship is moored, and powers the engine-mounted generator through driving the main engine A ship power generation system capable of generating is provided.

상술한 본 발명의 과제를 해결하기 위해, 본 발명의 일 실시예에 따른 선박 발전 시스템은 선박의 메인 엔진 동작에 따라 전력을 생성하는 축 발전기, 상기 메인 엔진에 연결된 샤프트와 상기 선박의 프로펠러에 연결된 샤프트 사이에 형성되어, 제어에 따라 상기 메인 엔진측 샤프트와 상기 프로펠러 측 샤프트 사이를 선택적으로 연결하거나 분리하는 샤프트 클러치, 상기 축 발전기 및 상기 선박의 발전기 엔진에서 생성된 전력을 변환하여 부하에 전달하는 전력 공급부, 사전에 설정된 하버(harbor) 모드시에 상기 샤프트 클러치의 연결을 분리시키는 제어부를 포함할 수 있다. In order to solve the problems of the present invention described above, a ship power generation system according to an embodiment of the present invention is a shaft generator for generating electric power according to the operation of the main engine of a ship, a shaft connected to the main engine and connected to the propeller of the ship A shaft clutch that is formed between the shafts and selectively connects or disconnects between the main engine-side shaft and the propeller-side shaft according to control, the shaft generator and the generator engine of the ship converts the power generated and transfers it to the load It may include a power supply unit, a control unit that disconnects the connection of the shaft clutch in a preset harbor mode.

본 발명의 일 실시예에 따르면, 메인 엔진이 구동하더라고 메인 엔진의 추진력이 프로펠러로 전달되지 않고 엔진 마운티드 발전기(EMG)를 통해 전력을 생성할 수 있는 효과가 있다.According to an embodiment of the present invention, even if the main engine is driven, the driving force of the main engine is not transmitted to the propeller, and power can be generated through the engine-mounted generator (EMG).

도 1은 본 발명의 일 실시예에 따른 선박 발전 시스템의 개략적인 구성도이다.
도 2는 본 발명의 일 실시예에 따른 선박 발전 시스템의 전력 흐름을 나타내는 도면이다.1 is a schematic configuration diagram of a ship power generation system according to an embodiment of the present invention.
2 is a diagram illustrating a power flow of a ship power generation system according to an embodiment of the present invention.

이하, 첨부된 도면을 참조하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있도록 바람직한 실시예를 상세히 설명한다. Hereinafter, with reference to the accompanying drawings, a preferred embodiment will be described in detail so that those skilled in the art to which the present invention pertains can easily practice the present invention.

도 1은 본 발명의 일 실시예에 따른 선박 발전 시스템의 개략적인 구성도이다.1 is a schematic configuration diagram of a ship power generation system according to an embodiment of the present invention.

도 1을 참조하면, 본 발명의 일 실시예에 따른 선박 발전 시스템(100)은 메인 엔진(Maing Engine; M/E)(110), 축 발전기(Shaft Grnerator; SG)(120), 제어부(140) 및 샤프트 클러치(shaft clutch)(150)를 포함할 수 있다.Referring to FIG. 1 , a ship power generation system 100 according to an embodiment of the present invention includes a main engine (M/E) 110 , a shaft generator (SG) 120 , and a control unit 140 . ) and a shaft clutch 150 .

메인 엔진(110)은 축에 연결된 프로펠러를 회전시켜 선박을 추진시킬 수 있다.The main engine 110 may propel the vessel by rotating a propeller connected to the shaft.

축 발전기(120)는 선박의 메인 엔진(110)의 동작에 따라 전력을 생성할 수 있으며, 외부에서 전력을 공급받는 경우 전동기로 동작하여 선박을 추진시킬 수도 있다.The shaft generator 120 may generate electric power according to the operation of the main engine 110 of the ship, and when receiving power from the outside, it may operate as an electric motor to propel the ship.

축 발전기(120)는 메인 엔진(110)의 프리 엔드(free-end)(크랭크 축(crank shaft) 바로 앞)에 설치하는 방식의 엔진 장착(Engine Mounted) 방식의 엔진 마운티드 발전기(Engine Mounted shaft Generator; EMG)일 수 있다. 엔진 마운티드 발전기는 메인 엔진(110)의 크랭크 축에 연결되어, 메인 엔진(110)과 프로펠러 사이의 중간축에 설치하는 방식의 인-라인 타입 축 발전기(in-line type shaft generator)에 대비하여 엔진 룸의 부피를 더 저감시킬 수도 있다.Shaft generator 120 is an engine mounted (Engine Mounted) method of installing the free-end (just in front of the crank shaft) of the main engine 110 (Engine Mounted shaft Generator) ; EMG). The engine mounted generator is connected to the crankshaft of the main engine 110, and is installed on the intermediate shaft between the main engine 110 and the propeller. It is also possible to further reduce the volume of the room.

제어부(140)는 필요에 따라 샤프트 클러치(150)의 연결을 분리시킬 수 있다. 예를 들어, 하버 모드(harbor mode)와 같이 프로펠러는 돌지 않는 상황에서 선내 필요 전력을 공급해야 할 상황에서 샤프트 클러치(150)의 연결을 분리시킬 수 있다.The control unit 140 may disconnect the connection of the shaft clutch 150 as necessary. For example, the connection of the shaft clutch 150 may be disconnected in a situation in which power needs to be supplied in a situation in which the propeller does not rotate, such as in a harbor mode.

샤프트 클러치(150)는 메인 엔진(110)에 연결된 샤프트(S1)와 선박의 프로펠러(P)에 연결된 샤프트(S2) 사이에 형성되어, 제어에 따라 메인 엔진측 샤프트(S1)와 프로펠러 측 샤프트(S2) 사이를 선택적으로 연결하거나 분리할 수 있다.The shaft clutch 150 is formed between the shaft S1 connected to the main engine 110 and the shaft S2 connected to the propeller P of the ship, and the main engine side shaft S1 and the propeller side shaft (S1) according to the control S2) can be selectively connected or separated.

본 발명의 일 실시예에 따른 선박 발전 시스템은 축 발전기(120) 및 선박의 발전기 엔진에서 생성된 전력을 변환하여 부하에 전달하는 전력 공급부(130)를 더 포함할 수 있다.The ship power generation system according to an embodiment of the present invention may further include a shaft generator 120 and a power supply unit 130 that converts power generated by the generator engine of the ship and transmits it to a load.

전력 공급부(130)는 축 발전기(120) 또는 발전기 엔진(Generator Engine; G/E)로부터의 전력을 적절히 변환하여 부하에 공급할 수 있다.The power supply unit 130 may appropriately convert power from the shaft generator 120 or a generator engine (G/E) and supply it to a load.

전력 공급부(130)는 가변 주파수 드라이브(Variable Frequency Drive; VFD)(131), 메인 스위치 보드(Main Switch board; MSBD)(132), 에너지 저장 시스템(Energy Saving System; ESS)(133)을 포함할 수 있다.The power supply unit 130 includes a variable frequency drive (VFD) 131 , a main switch board (MSBD) 132 , and an energy saving system (ESS) 133 . can

가변 주파수 드라이브(131)는 축 발전기(120)로부터의 교류 전력을 직류 전력으로 변환하여 메인 스위치 보드(132) 또는 에너지 저장 시스템(133)에 전달할 수 있다. The variable frequency drive 131 may convert AC power from the shaft generator 120 into DC power and transmit it to the main switch board 132 or the energy storage system 133 .

메인 스위치 보드(132)는 가변 주파수 드라이브(131)로부터의 직류 전력을 부하에 공급하거나, 발전기 엔진(G/E)으로부터의 교류 전력을 직류 전력으로 변환하여 부하에 공급할 수 있다.The main switch board 132 may supply DC power from the variable frequency drive 131 to the load, or convert AC power from the generator engine G/E into DC power and supply it to the load.

에너지 저장 시스템(133)은 가변 주파수 드라이브(131)로부터의 직류 전력을 저장하고, 제어에 따라 저장된 전력을 방전하여 가변 주파수 드라이브(131) 및 메인 스위치 보드(132)를 통해 부하에 공급할 수 있다.The energy storage system 133 may store DC power from the variable frequency drive 131 , discharge the stored power according to control, and supply it to a load through the variable frequency drive 131 and the main switch board 132 .

도 2는 본 발명의 일 실시예에 따른 선박 발전 시스템의 전력 흐름을 나타내는 도면이다.2 is a diagram illustrating a power flow of a ship power generation system according to an embodiment of the present invention.

도 1과 함께, 도 2를 참조하면, 본 발명의 선박 발전 시스템은 LNGC/FSRU와 같은 선박에 엔진 마운티드 발전기(120)를 적용할 경우, 프로펠러는 돌지 않는 상황에서 선내 필요 전력을 공급해야 할 상황에서, 선박의 프로펠러(P)와 메인 엔진(110) 사이에 샤프트 클러치(150)를 배치하여, 제어부(140)의 제어에 따라 엔진 마운티드 발전기(120)를 통해 생성된 전력이 선내 발전기 엔진(G/E)에서 발생된 전력과 함께 병렬 운전되어 전력을 공급할 수 있다.Referring to FIG. 1 together with FIG. 2 , the ship power generation system of the present invention applies the engine mounted generator 120 to a ship such as an LNGC/FSRU, the propeller does not rotate. In , by disposing the shaft clutch 150 between the propeller P of the ship and the main engine 110 , the power generated through the engine-mounted generator 120 under the control of the controller 140 is transferred to the onboard generator engine G It can be operated in parallel with the power generated in /E) to supply power.

즉, 메인 엔진이 구동하더라도 메인 엔진의 추진력이 프로펠러로 전달되지 않고 엔진 마운티드 발전기(EMG)를 통해 전력을 생성할 수 있다. That is, even when the main engine is driven, the driving force of the main engine is not transmitted to the propeller and power may be generated through the engine-mounted generator (EMG).

본 발명의 선박 발전 시스템은 예를 들면 하버 모드에서 엔진 마운티드 발전기를 적용한 LPG Carrier/Crude Oil Tanker/Product Carrier/Very Large Crude oil Carrier/Very Large Ethane Carrier 선종에 바람직하게 적용될 수 있다.The ship power generation system of the present invention can be preferably applied to, for example, LPG Carrier/Crude Oil Tanker/Product Carrier/Very Large Crude oil Carrier/Very Large Ethane Carrier ship types to which an engine-mounted generator is applied in harbor mode.

상술한 바와 같이, 본 발명에 따르면, 메인 엔진이 구동하더라도 메인 엔진의 추진력이 프로펠러로 전달되지 않고 엔진 마운티드 발전기(EMG)를 통해 전력을 생성할 수 있다.As described above, according to the present invention, even when the main engine is driven, the driving force of the main engine is not transmitted to the propeller and power can be generated through the engine-mounted generator (EMG).

이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고 후술하는 특허청구범위에 의해 한정되며, 본 발명의 구성은 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 그 구성을 다양하게 변경 및 개조할 수 있다는 것을 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자는 쉽게 알 수 있다.The present invention described above is not limited by the above-described embodiments and the accompanying drawings, but is limited by the claims described below, and the configuration of the present invention may vary within the scope without departing from the technical spirit of the present invention. Those of ordinary skill in the art to which the present invention pertains can easily recognize that the present invention can be changed and modified.

100: 선박 발전 시스템
110: 메인 엔진
120: 축 발전기
130: 전력 공급부
131: 가변 주파수 드라이브
132: 메인 스위치 보드
133: 에너지 저장 시스템
140: 제어부
150: 샤프트 클러치100: ship power generation system
110: main engine
120: shaft generator
130: power supply
131: variable frequency drive
132: main switch board
133: energy storage system
140: control unit
150: shaft clutch

Claims (5)

선박의 메인 엔진 동작에 따라 전력을 생성하는 축 발전기;
상기 메인 엔진에 연결된 샤프트와 상기 선박의 프로펠러에 연결된 샤프트 사이에 형성되어, 제어에 따라 상기 메인 엔진 측의 샤프트와 상기 프로펠러 측의 샤프트 사이를 선택적으로 연결하거나 분리하는 샤프트 클러치; 및
사전에 설정된 하버(harbor) 모드시에 상기 샤프트 클러치의 연결을 분리시키는 제어부
를 포함하는 선박 발전 시스템.
a shaft generator that generates electric power according to the operation of the ship's main engine;
a shaft clutch formed between a shaft connected to the main engine and a shaft connected to the propeller of the ship, and selectively connecting or disconnecting between the shaft on the main engine side and the shaft on the propeller side according to control; and
A control unit for disconnecting the shaft clutch in a preset harbor mode
A ship power generation system comprising a.
 제1항에 있어서,
상기 선박 발전 시스템은
상기 축 발전기 및 상기 선박의 발전기 엔진에서 생성된 전력을 변환하여 부하에 전달하는 전력 공급부를 더 포함하는 선박 발전 시스템.
According to claim 1,
The ship power generation system
The ship power generation system further comprising a power supply unit for converting the power generated by the shaft generator and the generator engine of the ship to transmit to the load.
 제2항에 있어서,
상기 전력 공급부는
상기 축 발전기로부터의 교류 전력을 직류 전력으로 변환하는 가변 주파수 드라이브; 및
상기 가변 주파수 드라이브로부터의 직류 전력을 부하에 공급하거나, 선박의 발전기 엔진으로부터의 교류 전력을 직류 전력으로 변환하여 부하에 공급하는 메인 스위치 보드
를 포함하는 선박 발전 시스템.
3. The method of claim 2,
the power supply
a variable frequency drive converting AC power from the shaft generator into DC power; and
A main switch board that supplies DC power from the variable frequency drive to a load, or converts AC power from a ship's generator engine into DC power and supplies it to the load
A ship power generation system comprising a.
 제3항에 있어서,
상기 전력 공급부는 상기 가변 주파수 드라이브로부터의 직류 전력을 저장하고, 제어에 따라 저장된 전력을 방전하여 부하에 전력을 공급하는 에너지 저장 시스템을 더 포함하는 선박 발전 시스템.
4. The method of claim 3,
The power supply unit further comprises an energy storage system for storing the DC power from the variable frequency drive and discharging the stored power according to control to supply power to the load.
 제1항에 있어서,
상기 축 발전기는 상기 메인 엔진에 부착되는 엔진 마운티드 발전기인 선박 발전 시스템.

According to claim 1,
The shaft generator is an engine mounted generator attached to the main engine.
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