KR20210041650A - Electric power supply system for vessel - Google Patents

Electric power supply system for vessel Download PDF

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Publication number
KR20210041650A
KR20210041650A KR1020190123662A KR20190123662A KR20210041650A KR 20210041650 A KR20210041650 A KR 20210041650A KR 1020190123662 A KR1020190123662 A KR 1020190123662A KR 20190123662 A KR20190123662 A KR 20190123662A KR 20210041650 A KR20210041650 A KR 20210041650A
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South Korea
Prior art keywords
generator
supply system
power supply
battery
power
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KR1020190123662A
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Korean (ko)
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정현원
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대우조선해양 주식회사
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Priority to KR1020190123662A priority Critical patent/KR20210041650A/en
Publication of KR20210041650A publication Critical patent/KR20210041650A/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
    • B63J3/04—Driving of auxiliaries from power plant other than propulsion power plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/53—Batteries
    • 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
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/32—Waterborne vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/30—AC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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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)
  • Transportation (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

According to an embodiment of the present invention, an electric power supply system for a vessel comprises: a generator (10); and a load part (20) and a driving battery (40) connected in parallel with the generator (10) through a bus line (50), wherein the driving battery (40) is a battery for driving an electric vehicle loaded on the vessel. Accordingly, the electric power supply system can rapidly carry out unloading of the electric vehicle by charging the driving battery without installing additional charging equipment.

Description

선박 전력 공급 시스템{ELECTRIC POWER SUPPLY SYSTEM FOR VESSEL}Ship power supply system {ELECTRIC POWER SUPPLY SYSTEM FOR VESSEL}

본 발명은 전력 공급 시스템에 관한 것으로, 특히 전기자동차를 운반하는 선박 전력 공급 시스템에 관한 것이다.The present invention relates to a power supply system, and more particularly to a ship power supply system for carrying an electric vehicle.

자동차운반선은 자동차전용운반선(pure car carrier)과 승용차와 화물트럭을 함께 운반하는 겸용운반선(pure car truck carrier)이 있다. 이러한 자동차운반선은 자동차가 자체의 동력으로 배 안으로 들어가서 선적되며, 자체 동력으로 배에서 내리게 되므로, 드라이브 온/오프(drive on/off)선이라고도 한다. Car carriers include a pure car carrier and a pure car truck carrier that transports passenger cars and cargo trucks together. These car carriers are also referred to as drive on/off lines because cars enter the ship with their own power and are loaded and get off the ship with their own power.

자동차전용운반선은 항해 또는 하역작업 중 운송되는 자동차가 손상되지 않으면서 싼 운임을 안전하게 운송하는 것을 목적으로 건조한 선박이다.A vehicle-only carrier is a ship built for the purpose of safely transporting cheap freight without damaging the transported vehicle during voyage or unloading operations.

최근에는 승용차와 트럭을 적재할 수 있는 겸용운반선이 증가하고 있고, 겸용으로 차량을 8000대까지 적재할 수 있는 규모로 대형화되고 있다.In recent years, the number of combined carriers capable of loading cars and trucks is increasing, and the scale is increasing to a scale capable of loading up to 8000 vehicles for combined use.

한편, 외부 전원으로부터의 충전이 가능한 주행용 배터리가 장착된 전기자동차의 보급이 증가하면서, 전기자동차도 함께 선적되고 있다.On the other hand, as the spread of electric vehicles equipped with driving batteries that can be charged from external power sources is increasing, electric vehicles are also being shipped.

전기자동차는 배터리를 이용하여 주행되므로, 배터리가 항상 충전되어 있어야 한다. 그러나, 기존의 자동차운반선에는 전기자동차의 방전에 대비한 충전 설비가 갖추어져 있지 않아, 전기자동차를 상차하는 작업 전에 육상에서 주행용 배터리를 완전히 충전하고 있다.Electric vehicles are driven using batteries, so the batteries must be charged at all times. However, conventional vehicle carriers do not have a charging facility for the discharge of electric vehicles, so the battery for running on land is fully charged before loading the electric vehicle.

그러나, 자동차운반선이 출항지로부터 입항지까지 오랜 기간 동안 항해하기 때문에 출항지에서 주행용 배터리를 완전히 충전했다 하더라도 주행용 배터리가 방전되는 경우가 빈번하게 발생되고 있으며, 입항지에서 전기자동차를 육상으로 하차하는 작업시 방전 상태가 확인되면 방전된 주행용 배터리를 사람이 일일이 수작업으로 충전하게 된다.However, since the vehicle carrier sails for a long period from the point of departure to the point of entry, even if the driving battery is fully charged at the point of departure, the battery for driving is frequently discharged. When the discharge state is confirmed during work, the discharged driving battery is manually charged by a person.

따라서, 하차 작업이 지연될 뿐 아니라 자동차운반선에 전기자동차용 충전설비를 설치함으로써 충전 시설 설치를 위한 비용이 증가하고, 자동차의 적재공간이 협소해지는 문제가 있다.Accordingly, there is a problem that not only the getting off work is delayed, but also the cost for installing the charging facility is increased by installing the charging facility for the electric vehicle on the vehicle carrier, and the loading space of the vehicle is narrowed.

따라서, 본 발명은 별도의 충전 설비를 설치하지 않으면서도 주행용 배터리를 충전하여 하차작업을 신속하게 진행할 수 있는 선박 전력 공급 시스템을 제공하는 것이다.Accordingly, the present invention is to provide a ship power supply system capable of quickly performing a disembarkation operation by charging a driving battery without installing a separate charging facility.

본 발명의 일 실시예에 따른 선박 전력 공급 시스템은 발전기(10), 발전기(10)에 버스 라인(50)을 통해서 병렬 연결된 부하부(20)와 주행용 배터리(40)를 포함하고, 주행용 배터리(40)는 선박에 선적되는 전기자동차의 구동용 배터리이다.The ship power supply system according to an embodiment of the present invention includes a generator 10, a load unit 20 connected in parallel to the generator 10 through a bus line 50 and a driving battery 40, and The battery 40 is a battery for driving an electric vehicle that is shipped on a ship.

상기 부하부(20)는 모터를 포함하고, 주행용 배터리(40)는 상기 부하부(20)에서 생산되는 회생전력으로 충전될 수 있다.The load unit 20 includes a motor, and the driving battery 40 may be charged with regenerative power produced by the load unit 20.

상기 주행용 배터리(40)는 상기 부하부(20)에 일정한 전력을 공급할 수 있다.The driving battery 40 may supply constant power to the load unit 20.

상기 부하부(20)는 쓰러스트 모터, 공기 압축기, 카고 펌프, 발라스트 펌프 모터 중 적어도 하나를 포함할 수 있다.The load unit 20 may include at least one of a thrust motor, an air compressor, a cargo pump, and a ballast pump motor.

상기 주행용 배터리(40)와 연결되어 상기 주행용 배터리(40)의 출력 전압 및 충전량을 관리하는 배터리 관리 시스템(100)을 더 포함할 수 있다.A battery management system 100 connected to the driving battery 40 to manage an output voltage and a charge amount of the driving battery 40 may be further included.

상기 발전기(10)는 디젤발전기, 복합연료발전기, 가스연료발전기 중 어느 하나일 수 있다.The generator 10 may be any one of a diesel generator, a combined fuel generator, and a gas fuel generator.

상기 발전기(10)와 상기 주행용 배터리(40) 사이에 위치하는 변압기(60) 및 전력 변환기(30)를 더 포함할 수 있다.A transformer 60 and a power converter 30 positioned between the generator 10 and the driving battery 40 may be further included.

상기 전력 변환기(30)는 AC/DC 컨버터 또는 DC/AC 컨버터일 수 있다.The power converter 30 may be an AC/DC converter or a DC/AC converter.

따라서, 본 발명의 일 실시예에 따른 선박용 전력 시스템을 이용하면, 별도의 충전 설비를 설치하지 않으면서도 주행용 배터리를 충전하여 별도의 충전 작업 없이 하차작업을 신속하게 진행할 수 있다.Therefore, if the power system for a ship according to an embodiment of the present invention is used, the battery for driving can be charged without installing a separate charging facility, so that the alighting operation can be quickly performed without a separate charging operation.

또한, 부하에서 생산되는 회생 전력을 이용하여 주행용 배터리를 충전하는 것으로, 종래의 저항을 통해서 소모되는 전력을 활용함으로써 전력 낭비를 줄일 수 있다. In addition, by charging the driving battery using the regenerative power produced from the load, power consumption can be reduced by utilizing the power consumed through the conventional resistance.

또한, 급격한 부하 변동일 발생하더라도 주행용 배터리를 통해서 일정한 전력을 부하에 공급할 수 있다. In addition, even when a sudden load fluctuation occurs, constant power can be supplied to the load through the driving battery.

또한, 급격한 부하 변동에 따른 고용량 발전기가 아닌 저용량 발전기를 설치하여 비용을 절감할 수 있다. In addition, it is possible to reduce costs by installing a low-capacity generator instead of a high-capacity generator according to a sudden change in load.

또한, 부하에서 필요로하는 전력을 주행용 배터리를 통해서 공급하므로 부하에 필요한 전력을 생산하기 위한 연료 소모를 줄일 수 있다.In addition, since the power required by the load is supplied through the driving battery, it is possible to reduce fuel consumption for producing the power required by the load.

도 1은 본 발명의 일 실시예에 따른 선박 전력 공급 시스템의 개략적인 회로도이다.
도 2 및 도 3은 본 발명의 일 실시예에 따른 선박 전력 공급 시스템의 전류 흐름을 설명하기 위한 도면이다.1 is a schematic circuit diagram of a ship power supply system according to an embodiment of the present invention.
2 and 3 are views for explaining the current flow of the ship power supply system according to an embodiment of the present invention.

이하, 첨부한 도면을 참고로 하여 본 발명의 실시예에 대하여 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세히 설명한다. 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein.

도 1은 본 발명의 일 실시예에 따른 선박 전력 공급 시스템의 개략적인 회로도이다.1 is a schematic circuit diagram of a ship power supply system according to an embodiment of the present invention.

도 1에 도시한 바와 같이, 본 발명의 일 실시예에 따른 선박의 전력 시스템은 발전기(10), 부하부(20), 전력 변환기(30) 및 주행용 배터리(40)를 포함할 수 있으며, 이들은 버스 라인(50)에 의해서 전기적으로 연결될 수 있다. As shown in Figure 1, the power system of the ship according to an embodiment of the present invention may include a generator 10, a load unit 20, a power converter 30 and a battery for driving 40, They can be electrically connected by bus line 50.

버스 라인(50)에는 전류의 흐름을 on/off 하는 스위칭 장치(5)가 연결될 수 있으며, 스위칭 장치(5)는 SSCB(solid state circuit breaker) 또는 기계적 스위칭 소자 중 하나 이상일 수 있으나 이에 한정되는 것은 아니다. A switching device 5 for turning on/off the flow of current may be connected to the bus line 50, and the switching device 5 may be one or more of a solid state circuit breaker (SSCB) or a mechanical switching device, but is limited thereto. no.

발전기(10)는 전력을 생산하는 것으로, 디젤발전기, 복합연료발전기, 가스연료발전기 등을 포함할 수 있으나, 이에 한정되는 것은 아니다.The generator 10 generates electric power, and may include a diesel generator, a combined fuel generator, a gas fuel generator, and the like, but is not limited thereto.

발전기(10)로부터 생산된 전력은 버스 라인(50)을 따라 부하부(20) 및 주행용 배터리(40)에 전달될 수 있으며, 부하부(20)와 주행용 배터리(40)는 병렬로 연결될 수 있다. Power produced from the generator 10 may be delivered to the load unit 20 and the driving battery 40 along the bus line 50, and the load unit 20 and the driving battery 40 may be connected in parallel. I can.

부하부(20)는 부하 변동이 큰 부하일 수 있으며, 쓰러스트 모터, 공기 압축기(air compressor), 카고 펌프(cargo pump), 발라스트 펌프(ballast pump) 모터 등일 수 있다. The load unit 20 may be a load having a large load fluctuation, and may be a thrust motor, an air compressor, a cargo pump, a ballast pump motor, or the like.

전력 변환기(30)는 컨버터로, 교류를 직류로, 또는 직류를 교류로 변환하는 AC/DC 컨버터 또는 DC/AC 컨버터일 수 있으며, 연결된 부하에 따라서 선택될 수 있다. The power converter 30 may be a converter, an AC/DC converter or DC/AC converter that converts AC to DC, or DC to AC, and may be selected according to a connected load.

발전기(10)와 주행용 배터리(40) 사이에는 교류를 직류로 변환하는 AC/DC 컨버터가 설치되어, 발전기(10)를 통해서 생산된 교류 전력은 AC/DC 컨버터를 통해서 직류로 변환된 후 주행용 배터리(40)로 전달될 수 있다. 발전기(10)와 부하부(20) 사이에는 발전기(10)로부터 전달되는 교류를 부하에 적합한 교류로 변환하는 AC/AC 컨버터가 설치될 수 있다. An AC/DC converter that converts AC to DC is installed between the generator 10 and the driving battery 40, and the AC power produced through the generator 10 is converted to DC through the AC/DC converter before driving. It may be delivered to the battery 40 for. An AC/AC converter may be installed between the generator 10 and the load unit 20 to convert the alternating current transmitted from the generator 10 into an alternating current suitable for the load.

주행용 배터리(40)는 전기 자동차의 구동원으로, 주행용 배터리(40)는 방전에 대비하고 관리의 편리성을 위해서 별도의 공간에 적재될 수 있으며 전력 케이블로 연결될 수 있다. 주행용 배터리(40)는 부하부(20)의 모터 제동시 생산되는 회생전력에 의해서 충전될 수 있다.The driving battery 40 is a driving source of an electric vehicle, and the driving battery 40 may be loaded in a separate space for preparation for discharge and convenience of management, and may be connected with a power cable. The driving battery 40 may be charged by regenerative power produced when the load unit 20 brakes the motor.

주행용 배터리(40)는 배터리 관리 시스템(100)에 의해서 관리될 수 있다. 배터리 관리 시스템(100)은 주행용 배터리(40)가 적절한 충전 용량을 유지하고, 출력 전압을 일정하게 유지하도록 관리한다. The driving battery 40 may be managed by the battery management system 100. The battery management system 100 manages the driving battery 40 to maintain an appropriate charging capacity and maintain an output voltage constant.

또한, 배터리 관리 시스템(100)은 급속 충전 또는 완속 충전과 같은 충전 속도를 조절할 수 있다. 급속 충전 및 완속 충전은 각각 별도의 가지 버스 라인(51, 52)을 통해서 진행될 수 있다. 이때, 전력 변환기(30)는 가지 버스 라인(51, 52)에 각각 설치될 수 있다.In addition, the battery management system 100 may adjust a charging speed such as fast charging or slow charging. Fast charging and slow charging may be performed through separate branch bus lines 51 and 52, respectively. In this case, the power converter 30 may be installed on the branch bus lines 51 and 52, respectively.

발전기(10)와 주행용 배터리(40) 사이에는 변압기(60)가 더 설치될 수 있다.A transformer 60 may be further installed between the generator 10 and the driving battery 40.

변압기(60)는 발전기(10)에서 생산되는 고압 전력을 저압 전력으로 변환시키거나, 주행용 배터리(40)에 출력되는 저압 전력을 고압 전력으로 변환시킬 수 있다. The transformer 60 may convert high-voltage power produced by the generator 10 into low-voltage power, or convert low-voltage power output to the driving battery 40 into high-voltage power.

발전기(10)와 변압기(60) 사이에 연결된 스위칭 장치(5)는 전력 관리 시스템(power management system)(200)에 의해서 제어될 수 있으며, 전력 관리 시스템(200)은 스위칭 장치(5)를 온/오프 하거나 변압기(60)의 전압 변화를 관리한다. The switching device 5 connected between the generator 10 and the transformer 60 may be controlled by a power management system 200, and the power management system 200 turns on the switching device 5. On/off or manage the voltage change of the transformer (60).

또한, 전력 관리 시스템(200)은 배터리 관리 시스템(100)과 연결되어, 배터리 관리 시스템(100)에 의해서 주행용 배터리(40)가 관리될 수 있도록 한다. In addition, the power management system 200 is connected to the battery management system 100 so that the driving battery 40 can be managed by the battery management system 100.

본 발명에서와 같은 선박용 전력 시스템을 설치하면, 별도의 충전 시설 없이 주행용 배터리를 충전시킬 수 있으며 부하부의 부하 변동에 상관없이 안정적으로 전력을 공급할 수 있다. By installing the power system for a ship as in the present invention, it is possible to charge the driving battery without a separate charging facility, and it is possible to stably supply power regardless of a change in the load of the load unit.

도 2 및 도 3은 본 발명의 일 실시예에 따른 선박 전력 공급 시스템의 전류 흐름을 설명하기 위한 도면이다.2 and 3 are views for explaining the current flow of the ship power supply system according to an embodiment of the present invention.

도 2를 참조하면, 선박의 운항시 발전기(10)는 전력을 생산하고, 생산된 전력은 버스 라인(50)을 따라서 부하부(20)로 전달된다. 이때, 부하부는 모터를 포함하는 부하일 수 있으며, 모터의 구동에 따라서 회생전력이 생산된다.Referring to FIG. 2, the generator 10 generates electric power during operation of the ship, and the generated electric power is transmitted to the load unit 20 along the bus line 50. In this case, the load unit may be a load including a motor, and regenerative power is produced according to the driving of the motor.

회생전력은 가지 버스 라인(51, 52)을 통해서 주행용 배터리(40)로 전달되어 주행용 배터리(40)가 충전된다(점선 화살표 참조). 이처럼, 회생전력을 이용하여 주행용 배터리(40)를 충전함으로써 주행용 배터리(40)를 충전하기 위한 별도의 충전 시설을 구비하지 않을 수 있다.The regenerative power is transmitted to the driving battery 40 through the branch bus lines 51 and 52, so that the driving battery 40 is charged (refer to the dotted arrow). In this way, by charging the driving battery 40 using regenerative power, a separate charging facility for charging the driving battery 40 may not be provided.

물론, 주행용 배터리(40)의 충전은 발전기(10)에서 생산된 전력에 의해서 충전될 수도 있으나, 본 발명에서는 회생전력을 이용하면 주행용 배터리를 충전하기 위한 발전기(10)의 전력 생산을 줄일 수 있다. Of course, the charging of the driving battery 40 may be charged by the power produced by the generator 10, but in the present invention, the use of regenerative power reduces the power generation of the generator 10 for charging the driving battery. I can.

이때, 배터리 관리 시스템(100)은 주행용 배터리(40)의 충전 상태에 따라서 각각 별도의 가지 버스 라인(51) 또는 가지 버스 라인(52)을 통해, 급속 충전 또는 완속 충전을 선택하여 충전을 진행하며, 주행용 배터리(40)의 충전 용량을 관리할 수 있다.At this time, the battery management system 100 selects fast charging or slow charging through a separate branch bus line 51 or branch bus line 52 according to the charging state of the driving battery 40 to proceed with charging. And, it is possible to manage the charging capacity of the driving battery 40.

도 3을 참조하면 주행용 배터리(40)에 충전된 전력은 부하부(20)로 전달될 수 있다. 이때, 주행용 배터리(40)의 출력 전압은 배터리 관리 시스템(100)에 의해서 일정하게 유지되면서 부하부(20)에 공급된다(점선 화살표 참조).Referring to FIG. 3, power charged in the driving battery 40 may be transferred to the load unit 20. At this time, the output voltage of the driving battery 40 is maintained constant by the battery management system 100 and supplied to the load unit 20 (refer to the dotted arrow).

발전기(10)는 일정한 회전수로 작동하며, 부하에 따라서 토크를 변화(연료를 소모시킴)시켜 부하의 프로파일을 추종한다. 이때, 전력 소비량이 일정하지 않아 변동되는 부하를 추종하면서 발전하면, 잦은 연료소모량 변화로 인해 발전 효율이 낮아져 오히려 연료소모량이 더욱 많아진다.The generator 10 operates at a constant rotational speed, and follows the profile of the load by changing the torque (consuming fuel) according to the load. In this case, when power is generated while following a variable load because the power consumption is not constant, the power generation efficiency is lowered due to frequent changes in the fuel consumption, and the fuel consumption is rather increased.

이처럼, 부하부의 부하 변동이 크더라도 본 발명에 따른 주행용 배터리(40)를 통하면 부하의 변동에 상관없이 일정한 전력을 공급할 수 있다. 부하가 급격하게 변동하더라도 주행용 배터리(40)는 일정한 출력 전압을 유지할 수 있으므로 부하의 변동에 상관없이 부하에 일정하게 전력을 공급할 수 있다. In this way, even if the load variation of the load portion is large, constant power can be supplied regardless of the variation of the load through the driving battery 40 according to the present invention. Even if the load changes rapidly, the driving battery 40 can maintain a constant output voltage, so that power can be constantly supplied to the load regardless of the change in the load.

또한, 부하부(20)가 바우스러스터(bow thruster) 또는 카고 펌프(cargo pump) 와 같이 전력 소비가 큰 부하일 경우 안정적으로 전력을 공급하기 위해서는 필요로 하는 전력보다 큰 고용량의 발전기를 설치해야 하나, 본 발명에서는 주행용 배터리(40)를 이용하여 일정 크기의 전력을 안정적으로 공급할 수 있으므로, 고용량의 발전기를 설치하지 않을 수 있다.In addition, when the load unit 20 is a load having a large power consumption such as a bow thruster or a cargo pump, a high-capacity generator larger than the required power must be installed in order to stably supply power. , In the present invention, since power of a certain size can be stably supplied using the driving battery 40, a high-capacity generator may not be installed.

또한, 저전력 부하의 경우에도, 주행용 배터리(40)가 필요로 하는 적정 전력을 일정하게 출력하여 공급할 수 있다.In addition, even in the case of a low-power load, the appropriate power required by the driving battery 40 may be constantly output and supplied.

또한, 하나의 발전기로 서로 다른 발전 용량을 필요로 하는 고전력 부하와 저전력 부하에 필요 전력을 공급할 때, 발전기 용량을 용이하게 선택할 수 있다. In addition, when one generator supplies necessary power to a high-power load and a low-power load that require different power generation capacities, the generator capacity can be easily selected.

또한, 주행용 배터리(40)가 완충된 상태에서 회생전력이 지속적으로 공급될 경우, 더 이상의 충전은 필요하지 않으므로 전달되는 잉여 전력은 전력을 필요로 하는 부하, 예를 들어 거주구의 냉난방을 위한 난방기 및 냉방기로 전달되어 소모될 수 있다. In addition, when regenerative power is continuously supplied while the driving battery 40 is fully charged, no further charging is required, so the surplus power delivered is a load that requires power, for example, a heater for cooling and heating in a living quarter. And may be transferred to the air conditioner and consumed.

이상, 본 발명을 도면에 도시된 실시예를 참조하여 설명하였다. 그러나, 본 발명은 이에 한정되지 않고 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명과 균등한 범위에 속하는 다양한 변형예 또는 다른 실시예가 가능하다. 따라서, 본 발명의 진정한 보호범위는 이어지는 특허청구범위에 의해 정해져야 할 것이다.In the above, the present invention has been described with reference to the embodiments shown in the drawings. However, the present invention is not limited thereto, and various modifications or other embodiments falling within the scope equivalent to the present invention are possible by those of ordinary skill in the art. Therefore, the true scope of protection of the present invention should be determined by the claims that follow.

5: 스위칭 소자
10: 발전기
20: 부하부
30: 전력 변화기
40: 주행용 배터리
50: 버스 라인
51, 52: 가지 버스 라인
60: 변압기
100: 배터리 관리 시스템
200: 전력 관리 시스템5: switching element
10: generator
20: load
30: power converter
40: battery for driving
50: bus line
51, 52: branch bus line
60: transformer
100: battery management system
200: power management system

Claims (9)

발전기(10);
상기 발전기(10)에 버스 라인(50)을 통해서 병렬 연결된 부하부(20)와 주행용 배터리(40)
를 포함하고,
상기 주행용 배터리(40)는 선박에 선적되는 전기자동차의 구동용 배터리인, 선박 전력 공급 시스템.Generator 10;
A load unit 20 and a driving battery 40 connected in parallel to the generator 10 through a bus line 50
Including,
The driving battery 40 is a battery for driving an electric vehicle that is shipped on a ship, a ship power supply system. 제 1 항에 있어서,
상기 부하부(20)는 모터를 포함하는, 선박 전력 공급 시스템.The method of claim 1,
The load unit 20 includes a motor, ship power supply system. 제 2 항에 있어서,
상기 주행용 배터리(40)는 상기 부하부(20)에서 생산되는 회생전력으로 충전되는, 선박 전력 공급 시스템.The method of claim 2,
The driving battery 40 is charged with regenerative power produced by the load unit 20, a ship power supply system. 제 1 항에 있어서,
상기 주행용 배터리(40)는 상기 부하부(20)에 일정한 전력을 공급하는, 선박 전력 공급 시스템.The method of claim 1,
The driving battery 40 supplies a constant power to the load unit 20, a ship power supply system. 제 1 항에 있어서,
상기 부하부(20)는 쓰러스트 모터, 공기 압축기, 카고 펌프 및 발라스트 펌프 모터 중 어느 하나 이상을 포함하는, 선박 전력 공급 시스템.The method of claim 1,
The load unit 20 includes any one or more of a thrust motor, an air compressor, a cargo pump and a ballast pump motor, a ship power supply system. 제 1 항에 있어서,
상기 주행용 배터리(40)와 연결되어 상기 주행용 배터리(40)의 출력 전압 및 충전량을 관리하는 배터리 관리 시스템(100)
을 더 포함하는, 선박 전력 공급 시스템.The method of claim 1,
A battery management system 100 connected to the driving battery 40 to manage the output voltage and charge amount of the driving battery 40
Further comprising a ship power supply system. 제 1 항에 있어서,
상기 발전기(10)는 디젤발전기, 복합연료발전기 및 가스연료발전기 중 어느 하나인, 선박 전력 공급 시스템.The method of claim 1,
The generator 10 is any one of a diesel generator, a combined fuel generator and a gas fuel generator, a ship power supply system. 제 1 항에 있어서,
상기 발전기(10)와 상기 주행용 배터리(40) 사이에 위치하는 변압기(60) 및 전력 변환기(30)
를 더 포함하는, 선박 전력 공급 시스템.The method of claim 1,
A transformer 60 and a power converter 30 positioned between the generator 10 and the driving battery 40
Further comprising a ship power supply system. 제 8 항에 있어서,
상기 전력 변환기(30)는 AC/DC 컨버터 또는 DC/AC 컨버터인, 선박 전력 공급 시스템.The method of claim 8,
The power converter 30 is an AC/DC converter or a DC/AC converter, a ship power supply system.
KR1020190123662A 2019-10-07 2019-10-07 Electric power supply system for vessel KR20210041650A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102522770B1 (en) * 2021-10-27 2023-04-19 에이치디한국조선해양 주식회사 Car carrier having charging system for electric vehicle
WO2023075467A1 (en) * 2021-10-27 2023-05-04 한국조선해양 주식회사 Car carrier and ferry having charging system for electric vehicle
KR20230060594A (en) * 2021-10-27 2023-05-08 에이치디한국조선해양 주식회사 Ferry having charging system for electric vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102522770B1 (en) * 2021-10-27 2023-04-19 에이치디한국조선해양 주식회사 Car carrier having charging system for electric vehicle
WO2023075467A1 (en) * 2021-10-27 2023-05-04 한국조선해양 주식회사 Car carrier and ferry having charging system for electric vehicle
KR20230060594A (en) * 2021-10-27 2023-05-08 에이치디한국조선해양 주식회사 Ferry having charging system for electric vehicle

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