CN108657406B - Diesel-electric series-parallel ship hybrid power system with fuel cell - Google Patents
Diesel-electric series-parallel ship hybrid power system with fuel cell Download PDFInfo
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- CN108657406B CN108657406B CN201810188702.5A CN201810188702A CN108657406B CN 108657406 B CN108657406 B CN 108657406B CN 201810188702 A CN201810188702 A CN 201810188702A CN 108657406 B CN108657406 B CN 108657406B
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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
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- 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
- B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
- B63H23/10—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from more than one propulsion power unit
- B63H23/12—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from more than one propulsion power unit allowing combined use of the propulsion power units
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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
- 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
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- 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
Abstract
The invention aims to provide a diesel-gas-electric series-parallel type ship hybrid power system with a fuel cell. The diesel engine and the gas engine are connected with the gear box through the permanent magnet coupler, the two motors and the generator are connected with the gear box through the clutches, the two clutches are arranged in the gear box, and the electric power source comprises a fuel cell and a storage battery. The arrangement of multiple energy forms adopted by the invention can meet the requirements of the ship under various environments and working conditions, further improves the operation efficiency of the diesel engine, the gas engine and the motor, effectively reduces the fuel consumption and the emission of the engine, improves the dynamic response of the ship, and has wide application range of the system.
Description
Technical Field
The invention relates to a power system, in particular to a ship power system.
Background
With the increasingly severe energy problems and environmental problems in China and the rapid rise of international oil prices, higher requirements are put forward on the economy and emission performance of ships, and the energy-saving and emission-reducing technology of ships becomes one of the hot spots of attention and research of people.
The diesel engine is used as a main engine for ships in the world at present and has the advantages of mature technology, high thermal efficiency, good economical efficiency, good power response and the like. However, with the attention of people on energy problems and environmental problems, the problem of petroleum storage and the problem of emission of diesel engines are not ignored, especially the problem of emission is more serious due to the poor quality diesel oil which is frequently used by marine diesel engines, and the running cost is continuously increased due to the continuous rising of the price of the diesel oil.
Natural gas is the inevitable trend of future ship engine development as the fuel of engine, and natural gas has the advantages of green environmental protection, economy, safety and reliability. But the natural gas engine has the defects of poor power response, insufficient power and the like due to the limitation of low technical level of the natural gas engine at the present stage.
The fuel cell is a power generation device which has high power generation efficiency, small environmental pollution, high specific energy, low noise, high reliability and easy construction, and is a new direction for the electric propulsion of ships in the future. However, because the technology is not mature at present, the fuel cell has the disadvantages of slow start, difficult storage and supply of fuel, low power density, etc.
The pure electric ship electric propulsion system is the leading edge of future ship technical research, and has the advantages of good economy, maneuverability, safety, low noise, low pollution and the like. However, under the influence of the power generation mode, power density and energy storage technology, the current pure electric ship cannot achieve high-performance speed, acceleration and self-control, and the cruising ability of the pure electric ship is limited by the battery capacity of the pure electric ship.
The hybrid power technology of the ship is helpful for solving the contradiction between the energy problem and the technology immaturity, and provides a feasible scheme for the transition of the traditional internal combustion engine propulsion mode to the pure electric propulsion mode of the ship. Simultaneously, hybrid boats and ships have the advantage that internal-combustion engine impels boats and ships and pure electric propulsion boats and ships concurrently: compared with an internal combustion engine for propelling a ship, the internal combustion engine can select the working mode according to the load, so that the fuel economy under all working conditions is ensured, and the redundancy is good; compared with a pure electric propulsion ship, the initial investment cost is low, and the cruising ability is strong. Therefore, the development of hybrid ships is of great significance.
Disclosure of Invention
The invention aims to provide a diesel-electric hybrid ship hybrid power system with a fuel cell, which improves the dynamic property, the economical efficiency and the emission property of a ship.
The purpose of the invention is realized as follows:
the invention relates to a diesel-electric series-parallel ship hybrid power system with a fuel cell, which is characterized in that: the gas engine comprises a diesel engine, a gas engine, a fuel cell and a gear box, wherein the gear box comprises a first input end, a second input end, a first output end, a second output end and a third output end, the output end of the diesel engine is connected with the first input end of the gear box through a first permanent magnet coupler, the output end of the gas engine is connected with the second input end of the gear box through a second permanent magnet coupler, the output end of a first motor is connected with the third input end of the gear box through a first clutch, the output end of the second motor is connected with the fourth input end of the gear box through a second clutch, the input end of a first generator is connected with the first output end of the gear box through a third clutch, the input end of a second generator is connected with the second output end of the gear box through a fourth clutch, the third output end of the gear box is connected with a first propeller, the fourth output end of the gear box is connected with a second propeller, and a fifth clutch is arranged between the first input end of the gear box and the third output end of the gear box, a sixth clutch is arranged between the second input end of the gear box and the fourth output end of the gear box, the liquefied natural gas tank is connected with a gas supply device, the gas supply device is connected with a gas engine and a fuel cell, the fuel cell, a storage battery, a ship load, an inverter and a rectifier are respectively connected with a distribution board, the inverter is respectively connected with a first motor and a second motor through a frequency converter, and the first generator and the second generator are connected with the rectifier.
The invention relates to a diesel-electric series-parallel ship hybrid power system with a fuel cell, which is characterized in that: the diesel engine comprises a diesel engine, a gas engine, a fuel cell, a first gear box and a second gear box, wherein the first gear box comprises a first input end, a second input end and a first output end, the output end of the diesel engine is connected with the first input end of the gear box through a first permanent magnet coupler, the output end of the gas engine is connected with the second input end of the gear box through a second permanent magnet coupler, the output end of a first motor is connected with the third input end of the gear box through a first clutch, the output end of a second motor is connected with the fourth input end of the gear box through a second clutch, the input end of a generator is connected with the first output end of the gear box through a third clutch, the second output end of the gear box is connected with the second gear box, the second gear box is respectively connected with a first propeller and a second propeller, and a fourth clutch is arranged between the first input end of the gear box and the third output end of the gear box, a fifth clutch is arranged between the second input end of the gear box and the fourth output end of the gear box, the liquefied natural gas tank is connected with a gas supply device, the gas supply device is connected with a gas engine and a fuel cell, the fuel cell, a storage battery, a ship load, an inverter and a rectifier are respectively connected with a distribution board, the inverter is respectively connected with a first motor and a second motor through a frequency converter, and a generator is connected with the rectifier.
The present invention may further comprise:
1. the working modes of the diesel engine and the gas engine comprise a mechanical propulsion mode:
the mechanical propulsion mode comprises: the system comprises a diesel engine propulsion mode, a gas engine propulsion mode, a diesel-gas hybrid propulsion mode, a diesel engine propulsion auxiliary power generation mode, a gas engine propulsion auxiliary power generation mode and a diesel-gas hybrid propulsion auxiliary power generation mode;
(1) diesel propulsion mode: when the diesel engine is in a running state, the first permanent magnet coupler is closed, the second permanent magnet coupler is opened, the fifth clutch and the sixth clutch are closed, the first clutch and the fourth clutch are opened, and the diesel engine drives the first propeller and the second propeller to run;
(2) gas engine propulsion mode: the gas engine is in an operating state, the second permanent magnet coupler is closed, the first permanent magnet coupler is opened, the fifth clutch and the sixth clutch are closed, the first clutch and the fourth clutch are opened, and the gas engine drives the first propeller and the second propeller to operate;
(3) a diesel-gas hybrid propulsion mode: the diesel engine and the gas engine are simultaneously in an operating state, the first permanent magnet coupler and the second permanent magnet coupler are closed, the fifth clutch and the sixth clutch are closed, the first clutch and the fourth clutch are disconnected, and the diesel engine and the gas engine simultaneously drive the first propeller and the second propeller to operate;
(4) diesel propulsion assisted power generation mode: the diesel engine, the first generator and the second generator are in an operating state, the first permanent magnet coupler is closed, the second permanent magnet coupler is opened, the third clutch, the sixth clutch and the first clutch are closed, the first clutch, the second clutch and the third clutch are opened, the diesel engine drives the first propeller and the second propeller to operate and simultaneously drives the first generator and the second generator to generate electricity, and the electricity is collected into a distribution board through the rectifier;
(5) gas engine propulsion assisted power generation mode: the gas engine, the first generator and the second generator are in an operating state, the second permanent magnet coupler is closed, the first permanent magnet coupler is disconnected, the third clutch, the sixth clutch and the first clutch are closed, the first clutch, the second clutch and the third clutch are disconnected, the gas engine drives the first propeller and the second propeller to operate, meanwhile, the first generator and the second generator are driven to generate electricity, and the electricity is converged into a distribution board through the rectifier;
(6) the auxiliary power generation mode of the diesel-gas hybrid propulsion comprises the following steps: the diesel engine, the gas engine, the first generator and the second generator are in an operating state, the first permanent magnet coupler and the second permanent magnet coupler are closed, the third clutch and the sixth clutch are closed, the first clutch and the second clutch are disconnected, the diesel engine and the gas engine drive the first propeller and the second propeller to operate and simultaneously drive the first generator and the second generator to generate electricity, and the electricity is collected into the distribution board through the rectifier.
2. The working modes of the diesel engine and the gas engine comprise an electric propulsion mode:
the electric propulsion mode comprises: a fuel cell propulsion mode, a storage battery propulsion mode, a diesel engine series propulsion mode, a gas engine series propulsion mode, a diesel-gas hybrid series propulsion mode, a hybrid power supply propulsion mode and a shore power charging mode;
(1) fuel cell propulsion mode: the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell, the electric power is input through the inverter and the frequency converter after being converged into the distribution board, the first permanent magnet coupler and the second permanent magnet coupler are disconnected, the first clutch and the second clutch are closed, the third clutch and the sixth clutch are disconnected, and the first propeller and the second propeller are driven to run by the first motor and the second motor;
(2) battery propulsion mode: the first motor and the second motor are in a running state, the required electric power is provided by a storage battery, is input through the inverter and the frequency converter after being gathered into the distribution board, the first permanent magnet coupler and the second permanent magnet coupler are disconnected, the first clutch and the second clutch are closed, the third clutch and the sixth clutch are disconnected, and the first propeller and the second propeller are driven by the first motor and the second motor to run;
(3) hybrid electric propulsion mode: the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell and a storage battery, the electric power is input through an inverter and a frequency converter after being gathered into a distribution board, the first permanent magnet coupler and the second permanent magnet coupler are disconnected, the first clutch and the second clutch are closed, the third clutch and the sixth clutch are disconnected, and the first propeller and the second propeller are driven to run by the first motor and the second motor;
(4) diesel series propulsion mode: the diesel engine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by driving the first generator and the second generator by the diesel engine, the electric power is converged into a distribution board by a rectifier and then is input by an inverter and a frequency converter, the first permanent magnet coupler is closed, the second permanent magnet coupler is disconnected, the first clutch, the fourth clutch and the fifth clutch are closed, the fifth clutch, the sixth clutch and the first motor are disconnected, and the first motor and the second motor drive the first propeller and the second propeller to run;
(5) gas machine tandem propulsion mode: the gas engine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by driving the first generator and the second generator by the gas engine, the electric power is converged into a distribution board by a rectifier and then is input by an inverter and a frequency converter, the second permanent magnet coupler is closed, the first permanent magnet coupler is disconnected, the first clutch, the fourth clutch and the fifth clutch are closed, the fifth clutch, the sixth clutch and the fifth clutch are disconnected, and the first motor and the second motor drive the first propeller and the second propeller to run;
(6) diesel-gas mixing series propulsion mode: the diesel engine, the gas engine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by the first generator and the second generator driven by the diesel engine and the gas engine, the electric power is converged into a distribution board through the rectifier and then is input through the inverter and the frequency converter, the first permanent magnet coupler and the second permanent magnet coupler are closed, the first clutch and the fourth clutch are closed, the fifth clutch and the sixth clutch are opened, and the first motor and the second motor drive the first propeller and the second propeller to run;
(7) shore power charging mode: when the ship stops at a port and a shore, the storage battery is charged by the external power supply.
3. The working modes of the diesel engine and the gas engine comprise a hybrid propulsion mode:
the hybrid propulsion mode includes: the system comprises a diesel-electric hybrid propulsion mode, a gas-electric hybrid propulsion mode, a diesel-electric hybrid propulsion auxiliary power generation mode, a gas-electric hybrid propulsion auxiliary power generation mode and a diesel-electric hybrid propulsion auxiliary power generation mode.
(1) Diesel-electric hybrid propulsion mode: the diesel engine, the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell and a storage battery, the electric power is input through an inverter and a frequency converter after being gathered into a distribution board, the first permanent magnet coupler is closed, the second permanent magnet coupler is disconnected, the first clutch, the second clutch, the fifth clutch and the sixth clutch are closed, the third clutch and the fourth clutch are disconnected, and the diesel engine, the first motor and the second motor drive the first propeller and the second propeller to run together;
(2) gas-electric hybrid propulsion mode: the gas engine, the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell and a storage battery, the electric power is input through an inverter and a frequency converter after being converged into a distribution board, the second permanent magnet coupler is closed, the first permanent magnet coupler is disconnected, the first clutch, the second clutch, the fifth clutch and the sixth clutch are closed, the third clutch and the fourth clutch are disconnected, and the gas engine, the first motor and the second motor jointly drive the first propeller and the second propeller to run;
(3) diesel-electric hybrid propulsion mode: the diesel engine, the gas engine, the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell and a storage battery, the electric power is input by an inverter and a frequency converter after being converged into a distribution board, the first permanent magnet coupler and the second permanent magnet coupler are closed, the first clutch, the second clutch, the fifth clutch and the sixth clutch are closed, the third clutch and the fourth clutch are opened, and the diesel engine, the gas engine, the first motor and the second motor drive the first propeller and the second propeller to run together;
(4) the diesel-electric hybrid propulsion auxiliary power generation mode comprises the following steps: the diesel engine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by driving the first generator and the second generator by the diesel engine, is converged into a distribution board by a rectifier, then is input by an inverter and a frequency converter, and can charge a storage battery, the first permanent magnet coupler is closed, the second permanent magnet coupler is disconnected, the first clutch and the sixth clutch are closed, and the diesel engine, the first motor and the second motor jointly drive the first propeller and the second propeller to run;
(5) gas-electric hybrid propulsion auxiliary power generation mode: the gas machine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by driving the first generator and the second generator by the gas machine, the electric power is converged into a distribution board by a rectifier and then input by an inverter and a frequency converter, a storage battery can be charged, the second permanent magnet coupler is closed, the first permanent magnet coupler is disconnected, the first clutch, the second clutch, the third clutch and the sixth clutch are closed, and the gas machine, the first motor and the second motor jointly drive the first propeller and the second propeller to run;
(6) the auxiliary power generation mode of the diesel-electric hybrid propulsion comprises the following steps: the diesel engine, the gas engine, the first generator, the second generator, the first motor and the second motor are in an operating state, the required electric power is provided by the first generator and the second generator driven by the diesel engine and the gas engine, the electric power is converged into a distribution board through a rectifier and then input through an inverter and a frequency converter, a storage battery can be charged, the first permanent magnet coupler and the second permanent magnet coupler are closed, the first clutch and the sixth clutch are closed, and the diesel engine, the gas engine, the first motor and the second motor drive the first propeller and the second propeller to operate together.
4. The gas engine is a natural gas engine or a dual-fuel engine, the power of the gas engine is greater than that of the diesel engine, the fuel cell is a molten carbonate type fuel cell or a solid oxide type fuel cell or a phosphoric acid type fuel cell which can directly use natural gas as fuel, and the storage battery is a lead-acid storage battery or a lithium ion battery.
The invention has the advantages that:
1. the invention provides a diesel-gas-electric series-parallel type ship hybrid power system with a fuel cell, which is provided with a diesel engine, a gas machine, two motors and two generators, has wide power coverage range, can meet the power requirements of ships under various working conditions, and enables the diesel engine, the gas machine, the motors and the generators to better work in a high-efficiency area, thereby reducing the fuel consumption of the engines, improving the economy and the emission of the ships, effectively improving the power response of the ships during navigation, and improving the acceleration and deceleration performance and the ship reversing performance of the ships.
2. The gas supply requirement of the gas engine in combination with the fuel cell is more optimized with respect to the cost when only the gas engine or the fuel cell is arranged. Meanwhile, the fuel cell and the storage battery are combined to be used as a power supply device, the storage battery makes up the defects that the power response of the fuel cell is poor and the fuel cell cannot be charged, the fuel cell makes up the defects of low capacity and low efficiency of the storage battery, and the service life of the storage battery can be effectively prolonged.
3. The engine and the gearbox are connected by adopting the permanent magnet coupler instead of a traditional clutch, so that the flexible parallel operation of the engine is realized, the impact and vibration of the engine during parallel operation are effectively improved, the service life of the engine is prolonged, and although the power response of the permanent magnet coupler is slower compared with that of the clutch, the permanent magnet coupler can be used in a hybrid power system to well avoid the defect.
4. The hybrid power system provided by the invention can realize various working modes, effectively improves the efficiency of the ship hybrid power system, and can select a proper working mode according to the actual power demand and the ship navigation environment. The scheme not only can meet the emission standards of different ports and sea areas, but also can effectively relieve the contradiction between the immature technology and the increasingly strict emission standard, and can reasonably distribute the running time of the engine according to the price of diesel oil and the price of liquefied natural gas, thereby further improving the economy and the emission performance of the ship.
5. The ship hybrid power system provided by the system has the advantages that a diesel auxiliary engine for power generation is not needed to be installed on a ship, the power supply of a ship load can be mainly replaced by a fuel cell and a generator, and a storage battery can be used for replacing in emergency, so that the space of a cabin can be effectively saved, and a certain initial investment can be reduced.
6. The double-propeller and single-propeller switching device has the advantages that the clutch inside the gear box is switched on and off, so that the double-propeller and single-propeller switching device can be switched, and the turning radius of a ship can be effectively reduced when the single propeller works.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of the present invention;
FIG. 3 is a schematic structural view of the gearbox of FIG. 1;
FIG. 4 is a schematic view of the gearbox of FIG. 2.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
referring to fig. 1 to 4, in fig. 1, a diesel-electric hybrid ship hybrid system with a fuel cell is composed of a diesel engine 1, generators 3a and 3b, a gas engine 5, motors 8a and 8b, permanent magnet couplers 2 and 6, clutches 4a, 4b, 7a, 7b, 9a and 9b, a gear box 7, propellers 10a and 10b, a gas valve 11, a gas supply device 12, a liquefied natural gas tank 13, a fuel cell 14, a charging plug 15, a storage battery 16, a ship load 17, a distribution board 18, an inverter 19, a frequency converter 20, and a rectifier 21. The connection relationship is as follows: the output ends of the diesel engine 1 and the gas engine 5 are respectively connected with two input ends of a gear box 7 through permanent magnet couplers 2 and 6, the input ends of generators 3a and 3b are respectively connected with two output ends of the gear box 7 through clutches 4a and 4b, the output ends of motors 8a and 8b are respectively connected with the other two input ends of the gear box 7 through clutches 9a and 9b, the other two output ends of the gear box 7 are respectively connected with propellers 10a and 10b, a liquefied natural gas tank 13 is in gas connection with a gas supply device 12 and conveys natural gas to the gas engine 5 and a fuel cell 14 through a gas valve 11, the fuel cell 14, a storage battery 16, a ship load 17, an inverter 19 and a rectifier 21 are electrically connected with a distribution board through switches, the inverter 19 is electrically connected with the two motors 8a and 8b through a frequency converter 20, the generators 3a and 3b are electrically connected with the rectifier 21, the storage battery 16 is provided with a plug 15 which can be externally connected for charging.
In this embodiment, the diesel engine 1 and the gas engine 5 may be set to have equal power, or may be set to have a larger power and a smaller power, and the preferred scheme is that the high-power gas engine 5 is matched with the low-power diesel engine 1, so that the power coverage range can be increased, and the emission of harmful gas can be reduced.
In this embodiment, the gas engine 5 is preferably a pure natural gas engine or a dual-fuel engine, the generators 3a and 3b and the motors 8a and 8b are preferably permanent magnet motors having advantages of high efficiency, high power density, long life, and the like, the fuel cell 14 is preferably a molten carbonate type fuel cell or a solid oxide type fuel cell or a phosphoric acid type fuel cell which can directly use natural gas as fuel, and the battery 16 is preferably a lead-acid battery with low cost and good reliability or a lithium ion battery with high power density and small volume and weight.
The structure of the gear box 7 illustrated in the present invention is not limited to a single gear box, but may be a power combining mechanism composed of a plurality of gear boxes and having similar structure and function, and having two clutches 7a and 7b for respectively opening and closing.
The working modes of the invention mainly comprise a mechanical propulsion mode, an electric propulsion mode and a hybrid propulsion mode.
1. Mechanical propulsion mode
The mechanical propulsion modes can be divided into: the system comprises a diesel engine propulsion mode, a gas engine propulsion mode, a diesel-gas hybrid propulsion mode, a diesel engine propulsion auxiliary power generation mode, a gas engine propulsion auxiliary power generation mode and a diesel-gas hybrid propulsion auxiliary power generation mode.
1) Diesel propulsion mode: in the working mode, the diesel engine 1 is in a running state, the permanent magnet coupler 2 is closed, the permanent magnet coupler 6 is opened, the clutches 7a and 7b are closed, the clutches 4a, 4b, 9a and 9b are opened, and the two propellers 10a and 10b are driven by the diesel engine 1 to run.
2) Gas engine propulsion mode: in this operating mode, the gas engine 5 is in operation, the permanent magnet coupling 6 is closed, the permanent magnet coupling 2 is open, the clutches 7a and 7b are closed, the clutches 4a, 4b, 9a and 9b are open, and the two propellers 10a and 10b are driven by the gas engine 5.
3) A diesel-gas hybrid propulsion mode: in this operating mode, the diesel engine 1 and the gas engine 5 are simultaneously in an operating state, the permanent magnet couplers 2 and 6 are closed, the clutches 7a and 7b are closed, the clutches 4a, 4b, 9a and 9b are opened, and the diesel engine 1 and the gas engine 5 simultaneously drive the two propellers 10a and 10b to operate.
4) Diesel propulsion assisted power generation mode: in the working mode, the diesel engine 1 and the generators 3a and 3b are in a running state, the permanent magnet coupler 2 is closed, the permanent magnet coupler 6 is disconnected, the clutches 4a, 4b, 7a and 7b are closed, the clutches 9a and 9b are disconnected, the diesel engine 1 drives the two propellers 10a and 10b to run and simultaneously drives the two generators 3a and 3b to generate electricity, and the electricity is collected into the distribution board 18 through the rectifier 21.
5) Gas engine propulsion assisted power generation mode: in this operating mode, the gas engine 5 and the generators 3a and 3b are in an operating state, the permanent magnet coupler 6 is closed, the permanent magnet coupler 2 is opened, the clutches 4a, 4b, 7a and 7b are closed, the clutches 9a and 9b are opened, the gas engine 5 drives the two propellers 10a and 10b to operate, and simultaneously drives the two generators 3a and 3b to generate power, and the power is collected into the distribution board 18 through the rectifier 21.
6) The auxiliary power generation mode of the diesel-gas hybrid propulsion comprises the following steps: in the working mode, the diesel engine 1, the gas engine 5 and the generators 3a and 3b are in a running state, the permanent magnet couplers 2 and 6 are closed, the clutches 4a, 4b, 7a and 7b are closed, the clutches 9a and 9b are opened, the diesel engine 1 and the gas engine 5 drive the two propellers 10a and 10b to run and simultaneously drive the two generators 3a and 3b to generate electricity, and the electricity is collected into the distribution board 18 through the rectifier 21.
2. Electric propulsion mode
The electric propulsion modes can be divided into: a fuel cell propulsion mode, a battery propulsion mode, a diesel engine series propulsion mode, a gas engine series propulsion mode, a diesel hybrid series propulsion mode, a hybrid power propulsion mode, and a shore power charging mode.
1) Fuel cell propulsion mode: in this operating mode, the motors 8a and 8b are in operation, the required power is completely supplied by the fuel cell 14, and is input via the inverter 19 and the frequency converter 20 after being input into the distribution board 18, the permanent magnet couplers 2 and 6 are opened, the clutches 9a and 9b are closed, the clutches 4a, 4b, 7a and 7b are opened, and the two propellers 10a and 10b are driven by the motors 8a and 8b to operate.
2) Battery propulsion mode: in this operating mode, the motors 8a and 8b are in operation, the required power is completely supplied by the storage battery 16, and is input via the inverter 19 and the frequency converter 20 after being input into the distribution board 18, the permanent magnet couplers 2 and 6 are opened, the clutches 9a and 9b are closed, the clutches 4a, 4b, 7a and 7b are opened, and the two propellers 10a and 10b are driven by the motors 8a and 8b to operate.
3) Hybrid electric propulsion mode: in this operating mode, the motors 8a and 8b are in operation, the required power is supplied by the fuel cell 14 and the battery 16, and is input via the inverter 19 and the frequency converter 20 after being input into the distribution board 18, the permanent magnet couplers 2 and 6 are opened, the clutches 9a and 9b are closed, the clutches 4a, 4b, 7a and 7b are opened, and the two propellers 10a and 10b are driven by the motors 8a and 8b to operate.
4) Diesel series propulsion mode: in this operation mode, the diesel engine 1, the generators 3a and 3b, and the motors 8a and 8b are in an operation state, and the required power is completely provided by the diesel engine 1 driving the generators 3a and 3b, and is gathered into the distribution board 18 through the rectifier 21 and then is input through the inverter 19 and the frequency converter 20, the permanent magnet coupler 2 is closed, the permanent magnet coupler 6 is opened, the clutches 4a, 4b, 9a and 9b are closed, the clutches 7a and 7b are opened, and the motors 8a and 8b driving the two propellers 10a and 10b to operate.
5) Gas machine tandem propulsion mode: in this operation mode, the gas engine 5, the generators 3a and 3b, and the motors 8a and 8b are in operation, and the required power is completely provided by the gas engine 5 driving the generators 3a and 3b, and is collected into the distribution board 18 through the rectifier 21 and then is input through the inverter 19 and the frequency converter 20, the permanent magnet coupler 6 is closed, the permanent magnet coupler 2 is opened, the clutches 4a, 4b, 9a and 9b are closed, the clutches 7a and 7b are opened, and the motors 8a and 8b driving the two propellers 10a and 10b to operate.
6) Diesel-gas mixing series propulsion mode: in the working mode, the diesel engine 1, the gas engine 5, the generators 3a and 3b and the motors 8a and 8b are in a running state, the required power is provided by the diesel engine 1 and the gas engine 5 driving the generators 3a and 3b, the power is converged into the distribution board 18 through the rectifier 21 and then is input through the inverter 19 and the frequency converter 20, the permanent magnet couplers 2 and 6 are closed, the clutches 4a, 4b, 9a and 9b are closed, the clutches 7a and 7b are opened, and the motors 8a and 8b driving the two propellers 10a and 10b to run
7) Shore power charging mode: when the ship is parked at a port or a shore, the storage battery 16 can be charged by an external power supply through the charging plug 15.
3. Hybrid propulsion mode
The hybrid propulsion modes can be divided into: the system comprises a diesel-electric hybrid propulsion mode, a gas-electric hybrid propulsion mode, a diesel-electric hybrid propulsion auxiliary power generation mode, a gas-electric hybrid propulsion auxiliary power generation mode and a diesel-electric hybrid propulsion auxiliary power generation mode.
1) Diesel-electric hybrid propulsion mode: in this operation mode, the diesel engine 1 and the electric motors 8a and 8b are in operation, the required power is provided by the fuel cell 14 and the storage battery 16, and is input through the inverter 19 and the frequency converter 20 after being converged into the distribution board 18, the permanent magnet coupler 2 is closed, the permanent magnet coupler 6 is opened, the clutches 7a, 7b, 9a and 9b are closed, the clutches 4a and 4b are opened, and the diesel engine 1 and the electric motors 8a and 8b drive the two propellers 10a and 10b to operate together.
2) Gas-electric hybrid propulsion mode: in this operation mode, the gas engine 5 and the motors 8a and 8b are in operation, the required power is supplied by the fuel cell 14 and the storage battery 16, and is input through the inverter 19 and the frequency converter 20 after being input into the distribution board 18, the permanent magnet coupler 6 is closed, the permanent magnet coupler 2 is opened, the clutches 7a, 7b, 9a and 9b are closed, the clutches 4a and 4b are opened, and the gas engine 5 and the motors 8a and 8b jointly drive the two propellers 10a and 10b to operate.
3) Diesel-electric hybrid propulsion mode: in this operation mode, the diesel engine 1, the gas engine 5, and the electric motors 8a and 8b are in operation, the required electric power is provided by the fuel cell 14 and the storage battery 16, and is input into the distribution board 18 via the inverter 19 and the frequency converter 20, the permanent magnet couplers 2 and 6 are closed, the clutches 7a, 7b, 9a, and 9b are closed, the clutches 4a and 4b are opened, and the diesel engine 1, the gas engine 5, and the electric motors 8a and 8b drive the two propellers 10a and 10b to operate together.
4) The diesel-electric hybrid propulsion auxiliary power generation mode comprises the following steps: in the working mode, the diesel engine 1, the generators 3a and 3b and the motors 8a and 8b are in a running state, the required power is provided by the generators 3a and 3b driven by the diesel engine 1, is converged into the distribution board 18 through the rectifier 21 and then is input through the inverter 19 and the frequency converter 20, the storage battery 16 can be charged, the permanent magnet coupler 2 is closed, the permanent magnet coupler 6 is opened, the clutches are closed, and the diesel engine 1 and the motors 8a and 8b drive the two propellers 10a and 10b to run together.
5) Gas-electric hybrid propulsion auxiliary power generation mode: in this operation mode, the gas engine 5, the generators 3a and 3b, and the motors 8a and 8b are in operation, the gas engine 5 drives the generators 3a and 3b to provide the required power, the required power is collected into the distribution board 18 through the rectifier 21 and then is input through the inverter 19 and the frequency converter 20, the battery 16 can be charged, the permanent magnet coupler 6 is closed, the permanent magnet coupler 2 is opened, the clutches are closed, and the gas engine 5 and the motors 8a and 8b drive the two propellers 10a and 10b to operate.
6) The auxiliary power generation mode of the diesel-electric hybrid propulsion comprises the following steps: in the working mode, the diesel engine 1, the gas engine 5, the generators 3a and 3b and the motors 8a and 8b are in a running state, the required power is provided by the diesel engine 1 and the gas engine 5 driving the generators 3a and 3b, and is converged into the distribution board 18 through the rectifier 21 and then is input through the inverter 19 and the frequency converter 20, the storage battery 16 can be charged, the permanent magnet couplers 2 and 6 are closed, the clutches are closed, and the diesel engine 1, the gas engine 5 and the motors 8a and 8b drive the two propellers 10a and 10b to run together.
Under all the modes, if the power of a single generator or an engine can meet the requirement, the switch and the clutch can be controlled, and the single generator or the single motor can work to work in a high-efficiency area. Meanwhile, a single generator and a single motor can be alternately used, and self overheating caused by long-time work of the single motor or the generator can be avoided, so that the running efficiency is reduced, and the service lives of the generator and the motor can be effectively prolonged.
In the above mode: the mechanical propulsion mode is suitable for the areas with low requirements on ship emission and noise when the ship enters the sea area for stable navigation after leaving a port or a wharf; the electric propulsion mode is suitable for areas where ships enter and exit ports or docks, ship acceleration and deceleration, ship backing, shore connection and high requirements for ship emission and noise are met; the hybrid propulsion mode is suitable for when the ship has a certain demand on propulsion power or navigational speed. Wherein the auxiliary power generation mode is adapted to be used when the fuel cell is not operating.
In the mechanical propulsion mode and the hybrid propulsion mode, when one of the clutches 7a and 7b is disconnected and closed, the working state of the single propeller can be realized; under the electric propulsion mode, the clutches 7a and 7b are disconnected, the working state that a single motor drives a single propeller can be realized, or the working power of one motor is higher, the working power of the other motor is lower, and the working state that the inner part of a double propeller is slow and the outer part of the double propeller is fast when the ship turns is realized. The working modes can effectively reduce the turning radius of the ship during turning.
The ship hybrid power system provided by the invention can be used without arranging a ship diesel auxiliary engine for power generation, the power required by a ship load 17 is mainly provided by the fuel cell 14, the generators 3a and 3b can also provide partial power during auxiliary power generation, and the storage battery 16 is recommended to be used in case of emergency, so that the service life of the storage battery 16 is prolonged.
The number of generators and motors can be increased or decreased by taking into account the magnitude of the actual power demand of the ship and the matching problem with the engine power, the fuel cell power and the storage battery capacity.
The following table is a power configuration scheme of a ship at a fixed load, which is provided in this embodiment, and the power configuration scheme does not consider losses during energy flow conversion, and only represents a direction in which energy flows are distributed: the rated power of a diesel engine is 900kW, the rated power of a gas engine is 1200kW, the rated power of a single motor is 600kW, the rated power of a single generator is 600kW, the power of a fuel cell is 600kW, the total capacity of a storage battery is 300 kW.h (the power emitted when discharging according to a 2C discharge rate is 600kW, the power required when charging according to an 1/3C charge rate is 100kW, C is coulomb), and the power consumed by a ship load is 300 kW. The power distribution of the system is shown in the table below when the diesel engine, gas engine, electric motor and generator are all operating in high efficiency zones in different operating modes. Where S (Shaft power) represents shaft power, E (electric power) represents electric power, both in kW, + represents shaft power or electric power emitted by the component, + represents shaft power or electric power consumed by the component, \\ represents the component in a closed state.
A diesel-electric hybrid propulsion mode as shown in the table, in which the diesel engine 1, the gas engine 5, the electric motors 8a and 8b are in operation, the electric generators 3a and 3b are in off state, both the fuel cell 14 and the accumulator 16 are powered, the diesel engine 1 delivers 900kW of shaft power, the gas engine 5 delivers 1200kW of shaft power, the fuel cell 14 delivers 600kW of electric power, the accumulator 16 delivers 900kW of electric power, the electric motors 8a and 8b respectively consume 600kW of electric power and deliver 600kW of shaft power, the ship load consumes 300kW of electric power, and finally the shaft power used by the ship for propulsion is 3300 kW.
Fig. 2 is another preferred embodiment of the present invention, which is similar to fig. 1 in the mutual configuration, connection relationship, operation mode, etc., and thus is omitted. Compared with the arrangement mode shown in the figure 1, the arrangement mode shown in the figure 2 reduces the number of the generators and changes the structure of the gear box, and the whole ship hybrid power system is more compact in structure and simpler in arrangement by adopting the arrangement mode shown in the figure 2, but the power coverage range is reduced to a certain extent and the load of a single generator is larger.
Fig. 3 and 4 show a combination of the gearbox 7 of the simplified construction of fig. 1 and 2, respectively, according to the invention. The combination form of a plurality of simple gear boxes can make structural arrangement more free, and spatial distribution is more reasonable to can match according to the power and increase more easily or reduce motor and generator platform number, make the matching of boat engine oar more nimble. But the energy loss will be a little increased and will also take up more cabin space.
Claims (4)
1. The utility model provides a take fuel cell's diesel-electric series-parallel connection formula boats and ships hybrid power system which characterized by: the gas engine comprises a diesel engine, a gas engine, a fuel cell and a gear box, wherein the gear box comprises a first input end, a second input end, a first output end, a second output end and a third output end, the output end of the diesel engine is connected with the first input end of the gear box through a first permanent magnet coupler, the output end of the gas engine is connected with the second input end of the gear box through a second permanent magnet coupler, the output end of a first motor is connected with the third input end of the gear box through a first clutch, the output end of the second motor is connected with the fourth input end of the gear box through a second clutch, the input end of a first generator is connected with the first output end of the gear box through a third clutch, the input end of a second generator is connected with the second output end of the gear box through a fourth clutch, the third output end of the gear box is connected with a first propeller, the fourth output end of the gear box is connected with a second propeller, and a fifth clutch is arranged between the first input end of the gear box and the third output end of the gear box, a sixth clutch is arranged between the second input end of the gear box and the fourth output end of the gear box, the liquefied natural gas tank is connected with a gas supply device, the gas supply device is connected with a gas engine and a fuel cell, the fuel cell, a storage battery, a ship load, an inverter and a rectifier are respectively connected with a distribution board, the inverter is respectively connected with a first motor and a second motor through a frequency converter, and the first generator and the second generator are connected with the rectifier;
the working modes of the diesel engine and the gas engine comprise a hybrid propulsion mode:
the hybrid propulsion mode includes: the system comprises a diesel-electric hybrid propulsion mode, a gas-electric hybrid propulsion mode, a diesel-electric hybrid propulsion auxiliary power generation mode, a gas-electric hybrid propulsion auxiliary power generation mode and a diesel-electric hybrid propulsion auxiliary power generation mode;
(1) diesel-electric hybrid propulsion mode: the diesel engine, the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell and a storage battery, the electric power is input through an inverter and a frequency converter after being gathered into a distribution board, the first permanent magnet coupler is closed, the second permanent magnet coupler is disconnected, the first clutch, the second clutch, the fifth clutch and the sixth clutch are closed, the third clutch and the fourth clutch are disconnected, and the diesel engine, the first motor and the second motor drive the first propeller and the second propeller to run together;
(2) gas-electric hybrid propulsion mode: the gas engine, the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell and a storage battery, the electric power is input through an inverter and a frequency converter after being converged into a distribution board, the second permanent magnet coupler is closed, the first permanent magnet coupler is disconnected, the first clutch, the second clutch, the fifth clutch and the sixth clutch are closed, the third clutch and the fourth clutch are disconnected, and the gas engine, the first motor and the second motor jointly drive the first propeller and the second propeller to run;
(3) diesel-electric hybrid propulsion mode: the diesel engine, the gas engine, the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell and a storage battery, the electric power is input by an inverter and a frequency converter after being converged into a distribution board, the first permanent magnet coupler and the second permanent magnet coupler are closed, the first clutch, the second clutch, the fifth clutch and the sixth clutch are closed, the third clutch and the fourth clutch are opened, and the diesel engine, the gas engine, the first motor and the second motor drive the first propeller and the second propeller to run together;
(4) the diesel-electric hybrid propulsion auxiliary power generation mode comprises the following steps: the diesel engine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by driving the first generator and the second generator by the diesel engine, is converged into a distribution board by a rectifier, then is input by an inverter and a frequency converter, and can charge a storage battery, the first permanent magnet coupler is closed, the second permanent magnet coupler is disconnected, the first clutch and the sixth clutch are closed, and the diesel engine, the first motor and the second motor jointly drive the first propeller and the second propeller to run;
(5) gas-electric hybrid propulsion auxiliary power generation mode: the gas machine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by driving the first generator and the second generator by the gas machine, the electric power is converged into a distribution board by a rectifier and then input by an inverter and a frequency converter, a storage battery can be charged, the second permanent magnet coupler is closed, the first permanent magnet coupler is disconnected, the first clutch, the second clutch, the third clutch and the sixth clutch are closed, and the gas machine, the first motor and the second motor jointly drive the first propeller and the second propeller to run;
(6) the auxiliary power generation mode of the diesel-electric hybrid propulsion comprises the following steps: the diesel engine, the gas engine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by the first generator and the second generator driven by the diesel engine and the gas engine, the electric power is converged into a distribution board through a rectifier and then input through an inverter and a frequency converter, a storage battery can be charged, the first permanent magnet coupler and the second permanent magnet coupler are closed, the first clutch, the second clutch, the third clutch and the fourth clutch are closed, and the diesel engine, the gas engine, the first motor and the second motor drive the first propeller and the second propeller to run together;
the gas engine is a natural gas engine or a dual-fuel engine, the power of the gas engine is greater than that of the diesel engine, the fuel cell is a molten carbonate type fuel cell or a solid oxide type fuel cell or a phosphoric acid type fuel cell which can directly use natural gas as fuel, and the storage battery is a lead-acid storage battery or a lithium ion battery.
2. The diesel-electric hybrid ship hybrid power system with the fuel cell as set forth in claim 1, wherein: the working modes of the diesel engine and the gas engine comprise a mechanical propulsion mode:
the mechanical propulsion mode comprises: the system comprises a diesel engine propulsion mode, a gas engine propulsion mode, a diesel-gas hybrid propulsion mode, a diesel engine propulsion auxiliary power generation mode, a gas engine propulsion auxiliary power generation mode and a diesel-gas hybrid propulsion auxiliary power generation mode;
(1) diesel propulsion mode: when the diesel engine is in a running state, the first permanent magnet coupler is closed, the second permanent magnet coupler is opened, the fifth clutch and the sixth clutch are closed, the first clutch and the fourth clutch are opened, and the diesel engine drives the first propeller and the second propeller to run;
(2) gas engine propulsion mode: the gas engine is in an operating state, the second permanent magnet coupler is closed, the first permanent magnet coupler is opened, the fifth clutch and the sixth clutch are closed, the first clutch and the fourth clutch are opened, and the gas engine drives the first propeller and the second propeller to operate;
(3) a diesel-gas hybrid propulsion mode: the diesel engine and the gas engine are simultaneously in an operating state, the first permanent magnet coupler and the second permanent magnet coupler are closed, the fifth clutch and the sixth clutch are closed, the first clutch and the fourth clutch are disconnected, and the diesel engine and the gas engine simultaneously drive the first propeller and the second propeller to operate;
(4) diesel propulsion assisted power generation mode: the diesel engine, the first generator and the second generator are in an operating state, the first permanent magnet coupler is closed, the second permanent magnet coupler is opened, the third clutch, the sixth clutch and the first clutch are closed, the first clutch, the second clutch and the third clutch are opened, the diesel engine drives the first propeller and the second propeller to operate and simultaneously drives the first generator and the second generator to generate electricity, and the electricity is collected into a distribution board through the rectifier;
(5) gas engine propulsion assisted power generation mode: the gas engine, the first generator and the second generator are in an operating state, the second permanent magnet coupler is closed, the first permanent magnet coupler is disconnected, the third clutch, the sixth clutch and the first clutch are closed, the first clutch, the second clutch and the third clutch are disconnected, the gas engine drives the first propeller and the second propeller to operate and simultaneously drives the first generator and the second generator to generate electricity, and the electricity is collected into the distribution board through the rectifier;
(6) the auxiliary power generation mode of the diesel-gas hybrid propulsion comprises the following steps: the diesel engine, the gas engine, the first generator and the second generator are in an operating state, the first permanent magnet coupler and the second permanent magnet coupler are closed, the third clutch and the sixth clutch are closed, the first clutch and the second clutch are disconnected, the diesel engine and the gas engine drive the first propeller and the second propeller to operate and simultaneously drive the first generator and the second generator to generate electricity, and the electricity is collected into the distribution board through the rectifier.
3. The diesel-electric hybrid ship hybrid power system with the fuel cell as set forth in claim 1, wherein: the working modes of the diesel engine and the gas engine comprise an electric propulsion mode:
the electric propulsion mode comprises: a fuel cell propulsion mode, a storage battery propulsion mode, a diesel engine series propulsion mode, a gas engine series propulsion mode, a diesel-gas hybrid series propulsion mode, a hybrid power supply propulsion mode and a shore power charging mode;
(1) fuel cell propulsion mode: the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell, the electric power is input through the inverter and the frequency converter after being converged into the distribution board, the first permanent magnet coupler and the second permanent magnet coupler are disconnected, the first clutch and the second clutch are closed, the third clutch and the sixth clutch are disconnected, and the first propeller and the second propeller are driven to run by the first motor and the second motor;
(2) battery propulsion mode: the first motor and the second motor are in a running state, the required electric power is provided by a storage battery, is input through the inverter and the frequency converter after being gathered into the distribution board, the first permanent magnet coupler and the second permanent magnet coupler are disconnected, the first clutch and the second clutch are closed, the third clutch and the sixth clutch are disconnected, and the first propeller and the second propeller are driven by the first motor and the second motor to run;
(3) hybrid electric propulsion mode: the first motor and the second motor are in a running state, the required electric power is provided by a fuel cell and a storage battery, the electric power is input through an inverter and a frequency converter after being gathered into a distribution board, the first permanent magnet coupler and the second permanent magnet coupler are disconnected, the first clutch and the second clutch are closed, the third clutch and the sixth clutch are disconnected, and the first propeller and the second propeller are driven to run by the first motor and the second motor;
(4) diesel series propulsion mode: the diesel engine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by driving the first generator and the second generator by the diesel engine, the electric power is converged into a distribution board by a rectifier and then is input by an inverter and a frequency converter, the first permanent magnet coupler is closed, the second permanent magnet coupler is disconnected, the first clutch, the fourth clutch and the fifth clutch are closed, the fifth clutch, the sixth clutch and the first motor are disconnected, and the first motor and the second motor drive the first propeller and the second propeller to run;
(5) gas machine tandem propulsion mode: the gas engine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by driving the first generator and the second generator by the gas engine, the electric power is converged into a distribution board by a rectifier and then is input by an inverter and a frequency converter, the second permanent magnet coupler is closed, the first permanent magnet coupler is disconnected, the first clutch, the fourth clutch and the fifth clutch are closed, the fifth clutch, the sixth clutch and the fifth clutch are disconnected, and the first motor and the second motor drive the first propeller and the second propeller to run;
(6) diesel-gas mixing series propulsion mode: the diesel engine, the gas engine, the first generator, the second generator, the first motor and the second motor are in a running state, the required electric power is provided by the first generator and the second generator driven by the diesel engine and the gas engine, the electric power is converged into a distribution board through the rectifier and then is input through the inverter and the frequency converter, the first permanent magnet coupler and the second permanent magnet coupler are closed, the first clutch and the fourth clutch are closed, the fifth clutch and the sixth clutch are opened, and the first motor and the second motor drive the first propeller and the second propeller to run;
(7) shore power charging mode: when the ship stops at a port and a shore, the storage battery is charged by the external power supply.
4. The utility model provides a take fuel cell's diesel-electric series-parallel connection formula boats and ships hybrid power system which characterized by: the diesel engine comprises a diesel engine, a gas engine, a fuel cell, a first gear box and a second gear box, wherein the first gear box comprises a first input end, a second input end and a first output end, the output end of the diesel engine is connected with the first input end of the gear box through a first permanent magnet coupler, the output end of the gas engine is connected with the second input end of the gear box through a second permanent magnet coupler, the output end of a first motor is connected with the third input end of the gear box through a first clutch, the output end of a second motor is connected with the fourth input end of the gear box through a second clutch, the input end of a generator is connected with the first output end of the gear box through a third clutch, the second output end of the gear box is connected with the second gear box, the second gear box is respectively connected with a first propeller and a second propeller, and a fourth clutch is arranged between the first input end of the gear box and the third output end of the gear box, a fifth clutch is arranged between the second input end of the gear box and the fourth output end of the gear box, the liquefied natural gas tank is connected with a gas supply device, the gas supply device is connected with a gas engine and a fuel cell, the fuel cell, a storage battery, a ship load, an inverter and a rectifier are respectively connected with a distribution board, the inverter is respectively connected with a first motor and a second motor through a frequency converter, and a generator is connected with the rectifier.
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| CN1498450A (en) * | 2001-01-22 | 2004-05-19 | Energy system for watercraft | |
| CN101484354A (en) * | 2006-07-06 | 2009-07-15 | 瓦特西拉芬兰有限公司 | Marine vessel power generation system |
| CN102145743A (en) * | 2011-03-07 | 2011-08-10 | 上海海事大学 | Ship electric propulsion system with fuel cell and application method thereof |
| CN103287562A (en) * | 2013-06-07 | 2013-09-11 | 哈尔滨耦合动力工程技术中心有限公司 | Diesel engine, electric generator and electromotor integrated ship hybrid power system and hybrid method |
| CN103287563A (en) * | 2013-06-07 | 2013-09-11 | 哈尔滨耦合动力工程技术中心有限公司 | Diesel engine-electromotor integrated ship diesel electric hybrid power system and hybrid method |
| CN203318672U (en) * | 2013-06-07 | 2013-12-04 | 哈尔滨耦合动力工程技术中心有限公司 | Diesel engine-electromotor integrated ship diesel-electric hybrid power system |
| CN204056278U (en) * | 2014-09-09 | 2014-12-31 | 中国海洋石油总公司 | A kind of PTI redundancy propulsion system of gas main frame boats and ships |
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