KR20210112213A - System for generating power of ship - Google Patents

System for generating power of ship Download PDF

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Publication number
KR20210112213A
KR20210112213A KR1020200040544A KR20200040544A KR20210112213A KR 20210112213 A KR20210112213 A KR 20210112213A KR 1020200040544 A KR1020200040544 A KR 1020200040544A KR 20200040544 A KR20200040544 A KR 20200040544A KR 20210112213 A KR20210112213 A KR 20210112213A
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South Korea
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ship
power
engine
generation system
power generation
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KR1020200040544A
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Korean (ko)
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김현재
김상현
유승진
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한국조선해양 주식회사
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Publication of KR20210112213A publication Critical patent/KR20210112213A/en
Priority to KR1020220015655A priority Critical patent/KR20220020876A/en

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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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)

Abstract

The present invention is to provide a ship power generation system using engine shaft power generation. According to an embodiment of the present invention, a ship power generation system may comprise: an engine-mounted generator which is attached to a crankshaft of a main engine of a ship and produces electric power according to the rotational operation of the crankshaft of the main engine; and a power conversion unit for converting the power generated by the engine-mounted generator.

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. 선박에는 선박에 탑재된 각종 장비나 의장품 등에 필요한 전력을 생산하여 제공하기 위한 발전기가 설치된다.Recently, various methods for improving the ship manufacturing fuel efficiency index (EEDI) according to IMO environmental regulations are constantly being talked about. A generator is installed on a ship to generate and provide electric power required for various equipment or equipment mounted on the ship.

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 공개특허공보 제10-2019-0071101호Republic of Korea Patent Publication No. 10-2019-0071101

본 발명의 일 실시예에 따르면, 엔진 축 발전을 이용한 선박 발전 시스템이 제공된다.According to an embodiment of the present invention, there is provided a ship power generation system using the engine shaft power generation.

상술한 본 발명의 과제를 해결하기 위해, 본 발명의 일 실시예에 따른 선박 발전 시스템은 선박의 메인 엔진의 크랭크 축에 부착되어 상기 메인 엔진의 크랭크 축의 회전 동작에 따라 전력을 생산하는 엔진 마운티드 발전기, 상기 엔진 마운티드 발전기에 의해 생성된 전력을 변환하는 전력 변환부를 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 attached to a crankshaft of a main engine of a ship and an engine-mounted generator for generating electric power according to the rotational operation of the crankshaft of the main engine , a power converter for converting power generated by the engine-mounted generator.

본 발명의 일 실시예에 따르면, 선박의 엔진룸의 부피를 저감시켜 수화물의 선적율을 높일 수 있는 효과가 있다.According to one embodiment of the present invention, there is an effect of reducing the volume of the engine room of the ship to increase the loading rate of the luggage.

도 1은 선박의 추진부를 개략적으로 나타내는 도면이다.
도 2는 본 발명의 일 실시예에 따른 선박 발전 시스템의 개략적인 구성도이다.1 is a view schematically showing a propulsion unit of a ship.
2 is a schematic configuration diagram 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 선박의 추진부를 개략적으로 나타내는 도면이다.1 is a view schematically showing a propulsion unit of a ship.

도 1을 참조하면, 엔진룸(R)에 연결되어 상기 엔진룸(R)의 외부로 노출된 프로펠러 축(S)의 일측 단부에는 선박의 추진을 위한 프로펠러(P)가 연결되어 회전하게 된다. 일반 상선은 화물 적재율을 최대화하기 위해 엔진룸의 크기가 최소화될 수 있도록 설계하는 것이 중요하다. 하지만, 종래의 축 발전기의 경우에는 엔진룸(R) 내부에 프로펠러 축(S)과 연결되어 있는 중간축에 축 발전기를 설치하기 때문에, 엔진룸(R)이 확장될 수 밖에 없고, 이에 따라 화물을 적재할 수 있는 공간이 줄어드는 단점이 있음을 설명해주는 도면이다.1, a propeller (P) for propulsion of a ship is connected to one end of the propeller shaft (S) connected to the engine room (R) and exposed to the outside of the engine room (R) and rotates. For general merchant ships, it is important to design so that the size of the engine room can be minimized in order to maximize the cargo loading rate. However, in the case of the conventional shaft generator, since the shaft generator is installed on the intermediate shaft connected to the propeller shaft (S) inside the engine room (R), the engine room (R) has no choice but to expand, and accordingly, the cargo It is a drawing explaining that there is a disadvantage that the space that can be loaded is reduced.

도 2는 본 발명의 일 실시예에 따른 선박 발전 시스템의 개략적인 구성도이다.2 is a schematic configuration diagram of a ship power generation system according to an embodiment of the present invention.

도 1과 함께, 도 2를 참조하면, 엔진룸(R)에는 엔진 마운티드 발전기(110), 전력 변환부(120)가 구비될 수 있다.Referring to FIG. 2 together with FIG. 1 , an engine mounted generator 110 and a power converter 120 may be provided in the engine room R.

엔진 마운티드 발전기(Engine Mounted shaft Generator; EMG)(110)는 엔진룸(R) 내의 메인 엔진(Main Engine; M/E)의 크랭크 축(Crank Shaft)에 부착되어, 크랭크 축의 회전력을 이용하여 전력을 제공한다. 엔진 마운티드 발전기(110)는 크랭크 축의 회전수에 대응하는 전력을 생산하여 제공할 수 있다.Engine Mounted Shaft Generator (EMG) 110 is attached to the crankshaft of the main engine (M/E) in the engine room (R), and uses the rotational force of the crankshaft to generate electric power. to provide. The engine-mounted generator 110 may generate and provide power corresponding to the number of revolutions of the crankshaft.

현재 신조선박 중 LPG 운반선의 경우에는 LNG Dual Fuel(DF) 발전기 엔진과 같이 LPG를 이용할 수 있는 LPG DF 발전기가 없는 상황이다. 즉, 선박의 메인엔진은 LPG를 연료로 하여 연비를 높일 수 있지만, 발전기 엔진의 경우에는 LPG를 사용할 수 없으므로 연료비가 고가인 기름을 사용하여 운항하고 있다. 이에 따라, 운항의 대부분을 차지하는 일반 항해 모드(Normal Sea Going mode)에서 연비를 절약하기 위해서 축 발전기를 거의 대부분 적용하고 있는 상황이다. 하지만, 종래의 축 발전기는 메인엔진-크랭크샤프트-중간축-프로펠러축-프로펠러 구성에서 중간축과 프로펠러 축 사이에 설치되기 때문에, 엔진룸 확장으로 인해 LPG와 같이 화물을 적재할 수 있는 화물구간을 축소되고 화물운송용을 목적으로 하는 상선에서 중요한 엔진룸의 공간과 화물 공간 사이에서 엔진룸이 더 커져야 하므로, 운송되는 화물양을 줄여야 하는 단점이 있다. 이에 대비하여, 본 발명의 엔진 마운티드 발전기(110)는 메인엔진의 크랭크샤프트에 직접 연결하여 발전할 수 있어 엔진룸을 확장하지 않아도 되므로 일반 항해 모드에서의 연비 확보와 화물 적재 공간을 보다 확보할 수 있는 이점이 있다. Currently, there is no LPG DF generator that can use LPG like the LNG Dual Fuel (DF) generator engine for LPG carriers among new ships. That is, the main engine of a ship can increase fuel efficiency by using LPG as a fuel, but in the case of a generator engine, LPG cannot be used, so it is operated using oil, which has a high fuel cost. Accordingly, in order to save fuel efficiency in the normal sea going mode, which accounts for most of the operation, most of the shaft generators are applied. However, since the conventional shaft generator is installed between the intermediate shaft and the propeller shaft in the main engine-crankshaft-intermediate shaft-propeller shaft-propeller configuration, the cargo section that can load cargo such as LPG due to engine room expansion Since the engine room has to be larger between the space of the engine room and the cargo space, which is an important engine room in a commercial ship for the purpose of reducing and transporting cargo, there is a disadvantage in that the amount of cargo to be transported must be reduced. In contrast to this, the engine-mounted generator 110 of the present invention can be directly connected to the crankshaft of the main engine to generate power, so that it is not necessary to expand the engine room, so it is possible to secure fuel economy and more cargo loading space in the general sailing mode. there is an advantage

상기 설명한 내용은 엔진 마운티드 발전기 적용의 장점에 관한 이해를 돕기 위한 설명으로, 비단 LPG 운반선에만 국한되는 것은 아니다. The above description is provided to help understand the advantages of applying an engine-mounted generator, and is not limited only to LPG carriers.

전력 변환부(120)는 엔진 마운티드 발전기(110)로부터의 출력을 제어할 수 있다, 전력 변환부(120)의 엔진 마운티드 발전기(110) 출력 제어는 생성된 전력의 전압 조정 및 주파수 제어일 수 있다. 전압 조정의 경우 생성된 전력의 전압 레벨을 조정할 수 있으며, 주파수 제어의 경우 메인 엔진(M/E)의 출력에 따라 결정되는 엔진 마운티드 발전기(110)로부터의 생성된 전력의 주파수를 유지시킬 수 있다. 주파수는 50Hz 내지 60Hz일 수 있다. The power conversion unit 120 may control the output from the engine-mounted generator 110 . The engine-mounted generator 110 output control of the power conversion unit 120 may be voltage adjustment and frequency control of the generated power. . In the case of voltage adjustment, the voltage level of the generated power may be adjusted, and in the case of frequency control, the frequency of the power generated from the engine-mounted generator 110 determined according to the output of the main engine M/E may be maintained. . The frequency may be 50 Hz to 60 Hz.

전력 변환부(120)는 컨버터(121)와 인버터(122)를 포함할 수 있다.The power converter 120 may include a converter 121 and an inverter 122 .

또한, 본 발명의 일 실시예에 따른 선박 발전 시스템(100)은 상기 전력 변환부(120)로부터의 전력을 공급받아 사전에 설정된 동작을 수행하는 선박 그리드(130)를 더 포함할 수 있다. In addition, the ship power generation system 100 according to an embodiment of the present invention may further include a ship grid 130 that receives power from the power converter 120 and performs a preset operation.

컨버터(121)는 엔진 마운티드 발전기(110)로부터의 교류 전력(AC)을 직류 전력(DC)으로 변환할 수 있다. The converter 121 may convert AC power (AC) from the engine-mounted generator 110 into direct current power (DC).

인버터(122)는 컨버터(121)로부터의 직류 전력(DC)을 선박에서 사용 가능한 교류 전력(AC)으로 변환하여 선박 그리드(130)에 전달할 수 있다.The inverter 122 may convert direct current power (DC) from the converter 121 into alternating current power (AC) usable in the ship and transmit it to the ship grid 130 .

선박 그리드(130)는 선박의 송전 계통으로 인버터(122)로부터의 교류 전력(AC)을 선박의 전기 부하들에 공급할 수 있다.The ship grid 130 may supply AC power from the inverter 122 to the ship's electrical loads to the ship's power transmission system.

또한, 본 발명의 일 실시예에 의한 선박 발전 시스템에서 엔진 마운티드 발전기(110) 및 전력 변환부(120)는 엔진룸(R)에 수납될 수 있다.In addition, in the ship power generation system according to an embodiment of the present invention, the engine mounted generator 110 and the power converter 120 may be accommodated in the engine room (R).

상술한 바와 같이, 본 발명에 따르면, 별도의 에너지 저장 시스템(Energy Saving System;ESS) 또는 연료 전지(Fuel Cell)을 채택하지 않고, 엔진 마운티드 발전기와 컨버터 및 인버터만으로 발전 시스템을 구성하여, 선박의 엔진룸의 부피를 저감시켜 수화물의 선적율을 높일 수 있는 효과가 있다. As described above, according to the present invention, a power generation system is configured only with an engine-mounted generator, a converter, and an inverter without adopting a separate Energy Saving System (ESS) or a fuel cell, so that the ship's It has the effect of reducing the volume of the engine room and increasing the cargo loading rate.

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: 선박의 발전 시스템
110: 엔진 마운티드 발전기
120: 전력 변환부
121: 컨버터
122: 인버터
130: 선박 그리드100: ship's power generation system
110: engine mounted generator
120: power conversion unit
121: converter
122: inverter
130: ship grid

Claims (4)

선박의 메인 엔진의 크랭크 축에 부착되어 상기 메인 엔진의 크랭크 축의 회전 동작에 따라 전력을 생산하는 엔진 마운티드 발전기; 및
상기 엔진 마운티드 발전기에 의해 생성된 전력을 변환하는 전력 변환부
를 포함하는 선박 발전 시스템.
an engine-mounted generator attached to the crankshaft of the main engine of the ship to generate electric power according to the rotational operation of the crankshaft of the main engine; and
Power conversion unit for converting power generated by the engine-mounted generator
A ship power generation system comprising a.
 제1항에 있어서,
상기 엔진 마운티드 발전기 및 상기 전력 변환부는 상기 메인 엔진이 수납되는 엔진룸에 배치되는 선박 발전 시스템.
According to claim 1,
The engine-mounted generator and the power conversion unit are disposed in an engine room in which the main engine is accommodated.
 제1항에 있어서,
상기 전력 변환부는
상기 엔진 마운티드 발전기에 의해 생성된 교류 전력을 직류 전력으로 변환하는 컨버터; 및
상기 컨버터에 의해 변환된 직류 전력을 선박에서 사용 가능한 교류 전력으로 변환하는 인버터
를 포함하는 선박 발전 시스템.
According to claim 1,
The power converter
a converter for converting AC power generated by the engine-mounted generator into DC power; and
An inverter that converts the DC power converted by the converter into AC power usable in the ship
A ship power generation system comprising a.
 제1항에 있어서,
상기 선박 발전 시스템은
상기 전력 변환부로부터의 전력을 공급받아 사전에 설정된 동작을 수행하는 선박 그리드를 더 포함하는 선박 발전 시스템.
According to claim 1,
The ship power generation system
The ship power generation system further comprising a ship grid for receiving power from the power converter to perform a preset operation.
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