CN113300422A

CN113300422A - Ship hybrid power supply system, ship and power supply control method thereof

Info

Publication number: CN113300422A
Application number: CN202110536072.8A
Authority: CN
Inventors: 杨瑞; 纪永波; 徐晓健; 骆义; 姜磊; 焦芳芳; 李坤; 刘畅; 高嵩; 杜柯; 魏洪斌; 王利朋; 刘文迪; 刘大壮; 李响
Original assignee: China Waterborne Transport Research Institute
Current assignee: China Waterborne Transport Research Institute
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-08-24

Abstract

The invention discloses a ship hybrid power supply system, a ship and a power supply control method thereof, wherein the device comprises: the power source is used for providing first electric energy based on hybrid energy under the management of the battery management system and the energy management system; a hybrid energy source, comprising: any one or more than two kinds of energy sources; the direct current power distribution system is used for carrying out alternating current-direct current-alternating current networking power distribution on the basis of first electric energy provided by the power source in an alternating current-direct current-mating power distribution mode under the management of the battery management system and the energy management system to obtain second electric energy; the second electric energy can also supply power to a daily power grid load; and the propulsion system is used for propelling the equipment to be powered to operate by utilizing second electric energy obtained by the direct-current power distribution system in an alternating-direct-alternating networking mode under the control of the power control system. This scheme, through the boats and ships hybrid power supply system who uses multiple energy as power, can reduce the environmental pollution that the emission caused in the boats and ships operation produces, be favorable to promoting the environmental protection performance of boats and ships.

Description

Ship hybrid power supply system, ship and power supply control method thereof

Technical Field

The invention belongs to the technical field of ships, and particularly relates to a ship hybrid power supply system, a ship and a power supply control method thereof, in particular to a diesel-electric multi-energy source alternating current-direct current-alternating current hybrid electric propulsion ship, namely a ship hybrid power supply system capable of using multiple energy sources as power.

Background

Ships, as the primary vehicle for global freight transportation, undertake about 90% of the trade traffic worldwide. Currently, about 99% of the world's large commercial ships use diesel-propelled power systems, but the CO produced during ship operation₂、SO_x、NO_XAnd particulate matter, etc., cause serious environmental pollution to the waters, ports and coastal areas in which they operate, and cause global warming.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention aims to provide a hybrid power supply system for a ship, the ship and a power supply control method thereof, which aim to solve the problem that serious environmental pollution is caused by emissions generated in the running process when the ship adopts a power system propelled by a diesel engine, and achieve the effects of reducing the environmental pollution caused by the emissions generated in the running process of the ship and being beneficial to improving the environmental protection performance of the ship by providing the hybrid power supply system for the ship, which can use various energy sources as power.

The invention provides a hybrid power supply system for a ship, comprising: a powertrain system and a control system; the power system and the control system are connected, and both the power system and the control system can be connected to equipment to be powered; the power system comprises: the system comprises a power source, a direct current power distribution system and a propulsion system, wherein the power source, the direct current power distribution system and the propulsion system are sequentially connected; the control system comprises: an energy management system, a battery management system and a power control system; the battery management system, the energy management system and the power control system are connected in sequence; the power source is also connected with the battery management system and the energy management system respectively; the direct current power distribution system is also connected with the battery management system and the energy management system respectively; the propulsion system is also connected with the power control system; wherein the power source is configured to provide a first electrical energy based on a hybrid energy source under management of the battery management system and the energy management system; the hybrid energy source, comprising: any one or more than two kinds of energy sources; the direct current power distribution system is configured to perform alternating current-direct current-alternating current networking power distribution by adopting an alternating current-direct current-mating power mode on the basis of first electric energy provided by the power source under the management of the battery management system and the energy management system to obtain second electric energy; the second electric energy can also supply power to a daily power grid load; the propulsion system is configured to utilize second electric energy obtained by the direct-current power distribution system through an alternating-direct-alternating networking mode to propel equipment to be powered to operate under the control of the power control system.

In some embodiments, the power source comprises: fossil fuel power sources and green energy power sources; wherein the fossil fuel based power source comprises: at least one of a diesel-electric generator set and an LNG-electric generator set; the green energy type power source comprises: at least one of a biomass energy generator set, a methanol generator set, a solar photovoltaic generator set, a wave energy generator set, a tidal energy generator set, a storage battery system, a super capacitor system, a fuel cell system and a shore power supply.

In some embodiments, the dc power distribution system includes: the system comprises a direct current processing unit, an alternating current processing unit and a direct current bus; the number of the direct current processing units is the same as that of the power sources with different energy sources in the power source; the number of the alternating current processing units is the same as that of the propulsion system and the daily power grid load; the different number of the direct current processing units are connected to the different number of the alternating current processing units through the direct current buses.

In some embodiments, one of the dc processing units includes: the system comprises a first load switch, a direct current processing module and a first fuse; the first load switch, the direct current processing module and the first fuse are sequentially arranged between one energy power source in the power sources and the direct current bus; the direct current processing module comprises: an AC-DC rectifier or DC-DC chopper; one of the communication processing units, comprising: the second fuse, the alternating current processing module and the second load switch; further comprising: a motor or transformer; the second fuse, the alternating current processing module and the second load switch are sequentially connected between the direct current bus and the motor or the transformer.

In some embodiments, a different number of the communication processing units includes: the system comprises a first alternating current processing unit, a second alternating current processing unit and a third alternating current processing unit; the propulsion system, comprising: a main thruster and a lateral thruster; the main thruster is connected to the direct current bus through a first alternating current processing unit; the side thruster is also connected to the direct current bus through a second alternating current processing unit; and the domestic power grid load is connected to the direct current bus through a third alternating current processing unit.

In some embodiments, the main thruster uses an integrated fully-revolving ring-drive permanent magnet tunnel thruster; the side propeller adopts a propeller propulsion device; the integrated full-revolving ring-drive permanent magnetic tunnel propulsion unit comprises: an integrated propulsion unit and propulsion control; wherein the integrated propulsion unit comprises: the system comprises a ring drive type permanent magnet motor, a blade, a flow guide cover shell and a water lubrication bearing; the paddle is positioned in the driving center of the ring drive type permanent magnet motor and is integrally arranged in the air guide sleeve shell together with the ring drive type permanent magnet motor; the water lubrication bearings are positioned on two sides of an integrated structure formed by the paddle and the ring drive type permanent magnet motor; the propulsion control apparatus includes: the digital controller comprises a DI digital controller, a central processing unit, a signal amplifier and a communication communicator; the central processing unit analyzes data after receiving an operation command of the equipment to be powered, a driving signal is sent to each DI digital controller and is transmitted to the ring drive type permanent magnet motor after being output by the signal amplifier, and the communication connector can be connected with a plurality of propulsion control devices of the equipment to be powered to form a master-slave or master-master control mode to provide power for driving of the equipment to be powered.

In some embodiments, the energy management system comprises: a main controller and a sub-controller; each sub-controller is connected with the main controller; the power control system includes: the system comprises a central control box, a machine side control box, a remote control panel and a display panel; the machine side control box, the remote control panel and the display panel are all connected to the central control box.

In accordance with the above apparatus, a further aspect of the present invention provides a ship comprising: a hull; further comprising: the hybrid power supply system for a ship as described above; the ship hybrid power supply system is connected to the ship body and can supply power to the ship body.

In accordance with another aspect of the present invention, there is provided a method for controlling power supply of a ship, including: providing, by a power source, first electrical energy based on a hybrid energy source under management of the battery management system and the energy management system; the hybrid energy source, comprising: any one or more than two kinds of energy sources; performing AC-DC-AC networking power distribution by a DC power distribution system based on first electric energy provided by the power source under the management of the battery management system and the energy management system by adopting an AC-DC-mating power distribution mode to obtain second electric energy; the second electric energy can also supply power to a daily power grid load; wherein, carry out interchange-direct-exchange network distribution, include: enabling a generator set in the power source to select a variable rotating speed mode to operate according to load power change in the ship, so as to adjust the rotating speed of the generator set according to different loads in the ship and enable the ship to work in a set efficiency region; and propelling the equipment to be powered to operate by using a propulsion system and second electric energy obtained by the direct-current power distribution system in an alternating-direct-alternating networking mode under the control of the power control system.

In some embodiments, providing the first electrical energy by a power source under management of the battery management system and the energy management system based on a hybrid energy source comprises: if the illumination intensity in the running environment of the ship reaches a set illumination condition, a solar photovoltaic generator set in the power source is adopted to supply power; if the running speed of the ship is within a set first speed range, at least one of a storage battery system, a super capacitor system and a fuel cell system in the power source is adopted for supplying power; if the stored energy of the ship is lower than a set energy condition or the running speed of the ship is in a set second speed range, at least one of an LNG generator set and a diesel generator set in the power source is adopted for supplying power; the lower limit of the second speed range is greater than the upper limit of the first speed range, typically when the vessel is at full speed; and if the ship is in a berthing state, charging at least one of a storage battery system and a super capacitor system by using a shore power supply in the power source.

Therefore, according to the scheme of the invention, the ship is propelled by the AC-DC-AC hybrid electric power which comprehensively utilizes green energy, so that stable access and switching of energy under different scenes are realized, the utilization efficiency of the energy is improved, and the pollutant emission of the ship is reduced; by providing the ship hybrid power supply system capable of using various energy sources as power, the environmental pollution caused by emissions generated during the operation of the ship can be reduced, and the improvement of the environmental protection performance of the ship is facilitated.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a hybrid power supply system for a ship according to the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a diesel-electric multi-energy source AC-DC-AC hybrid vessel of the present invention;

FIG. 3 is a schematic structural view of a port section of a hybrid diesel-electric hybrid vessel power system according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating a power supply control method according to an embodiment of the invention.

With reference to fig. 2, the reference numerals in the embodiment of the present invention are as follows:

1, a ship body; 11-deck; 12-side plates; 13-a base plate; 14-keel; 15-ribs; 2-a marine power system; 21-a power source; 211-fossil fuel type power source; 212-green energy type power source; 22-a direct current distribution system; 221-AC-DC rectifier; 222-DC-DC chopper; 223-a direct current bus; 224-DC-AC inverter; 23-a propulsion system; 231-an integrated propulsion unit; 232-propulsion control means; 2311-ring drive type permanent magnet motor; 2312-paddles; 2313-dome shell; 2314-water lubrication of bearings; 2321-DI numerical controller; 2322-a central processing unit; 2323-signal amplifier; 2324-communicator; 3-a vessel control system; 31-EMS; 311 — a master controller; 312-a sub-controller; 32-BMS; 33-PCS; 331-a central control box; 332-machine side control box; 333-remote control panel; 334-display panel.

With reference to fig. 3, the reference numerals in the embodiment of the present invention are as follows:

16-a first load switch; 17-a second load switch; 24-a first fuse; 25-port direct current bus; 26-a first DC-AC inverter; 27-a second DC-AC inverter; 28-a third DC-AC inverter; 29-a first motor; 30-a second motor; 34-a main propeller; 35-lateral thruster; 36-ship daily power grid load; 40-a transformer; 41-diesel generator set; 411-a first AC-DC rectifier; 412-a second AC-DC rectifier; 413-a third AC-DC rectifier; 414-a fourth AC-DC rectifier; 415-a first DC-DC chopper; 416-a second DC-DC chopper; 417-a third DC-DC chopper; 418-a fourth DC-DC chopper; 419-a fifth DC-DC chopper; 42-LNG power generation units; 420-a sixth DC-DC chopper; 421-a fifth AC-DC rectifier; 43-biomass energy generator set; 44-methanol power generation units; 45-solar photovoltaic generator set; 46-wave energy generator set; 47-tidal power generator set; 48-a battery system; 49-a supercapacitor system; 50-a fuel cell system; 51-shore power supply; 52-second fuse.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The International Maritime Organization (IMO) sets and produces a series of mandatory regulations for preventing and controlling the ship from polluting the environment on the basis of the principle of 'green environmental protection, energy conservation and emission reduction', such as 'preliminary strategy for reducing the emission of greenhouse gases of ships' passed in 2018. The electric propulsion ship taking new energy resources such as solar energy, wind energy, wave energy, tidal energy, biomass energy, Liquefied Natural Gas (LNG), methanol, a fuel cell system, a super capacitor system, a storage battery and the like as power has the characteristics of safety, greenness, economy, intelligence and the like, and meets the requirements of ecological environment protection and social energy structure transformation. Compared with a diesel engine propulsion ship, the electric propulsion ship has the advantages of strong maneuverability, easy control, flexible spatial layout, low noise and high comfort.

At present, an alternating current networking technology is mainly adopted for an electric propulsion ship, namely, a propeller is driven by a frequency conversion device which converts constant marine power station frequency into adjustable frequency. However, energy storage devices such as storage battery systems and super capacitors generally release energy in the form of direct current, and new energy power generation systems such as solar energy, wind energy, wave energy, tidal energy, biomass energy, and fuel cells generally generate direct current. The connection of a power source and electric equipment can be realized only by equipment such as a transformer, a sine wave filter, a three-phase inverter and the like by adopting an alternating-current networking technology, and the problems of more equipment, large required space, complex control, more cable requirements and the like exist.

In addition, single new energy sources such as solar energy, wind energy, wave energy, tidal energy, a storage battery system, a fuel cell system, a super capacitor and the like cannot continuously and effectively release electric energy according to different seasons, time and environments, so that a stable and good-continuity comprehensive power generation mode is difficult to form, the energy utilization rate is reduced, and the maneuverability and operability of the ship are limited. When a single power source fails, the safety and reliability of the ship are difficult to guarantee.

In some embodiments, in order to meet the requirement of the IMO on energy conservation and emission reduction, the scheme of the invention provides an alternating current-direct current-alternating current hybrid electric propulsion ship which comprehensively utilizes green energy, realizes stable access and switching of energy in different scenes, improves the utilization efficiency of the energy, reduces the pollutant emission of the ship, and ensures safe and reliable operation of the ship when a certain power source fails. The energy sources include, but are not limited to, solar energy, wind energy, wave energy, tidal energy, biomass energy, LNG, methanol, a storage battery system, a fuel cell system, and a super capacitor.

Aiming at the problems of the AC networking electric propulsion ship, the AC-DC-AC networking technology is adopted, energy storage devices such as a storage battery system and a super capacitor are better compatible, the access of new energy resources such as solar energy, a fuel cell system and wind energy is facilitated, the integration level of the electric propulsion system is improved, the volume and the weight of the system are reduced, the harmonic wave and the resonance risk in the whole ship range are eliminated, the propulsion system is ensured to work on the optimal energy consumption curve, and the energy consumption and the emission are further reduced.

According to an embodiment of the invention, a hybrid power supply system for a ship is provided. Referring to fig. 1, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The hybrid power supply system for a ship may include: a power system and a control system. The power system is connected with the control system, and both the power system and the control system can be connected to equipment to be powered. In the case where the equipment to be powered is a ship, the power system is a ship power system 2 and the control system is a ship control system 3. As shown in fig. 2, the multi-energy hybrid ship with an ac-dc-ac network according to the present invention is composed of a hull 1, a ship power system 2, and a ship control system 3. In the AC-DC-AC networking, AC generated by a power source is converted into DC, and then converted into AC for ship load.

The power system comprises: the power source 21, the direct current distribution system 22 and the propulsion system 23 are connected in sequence. For example: the marine power system 2 includes a power source 21, a dc power distribution system 22, and a propulsion system 23. Power source 21 is coupled to propulsion system 23 through a dc power distribution system 22.

The control system comprises: an energy management system 31, a battery management system 32, and a power control system 33. The battery management system 32, the energy management system 31, and the power control system 33 are connected in this order. The power source 21 is also connected to the battery management system 32 and the energy management system 31, respectively. The dc distribution system 22 is also connected to the battery management system 32 and the energy management system 31, respectively. The propulsion system 23 is also connected to the power control system 33. For example: the ship control system 3 includes an energy management system EMS31, a power control system PCS32, and a battery management system BMS 33. The power source 21 and the dc power distribution system 22 are connected to the EMS31 and the BMS 32, respectively, and the propulsion system 23 is connected to the PCS 33.

Wherein the power source 21 is configured to provide the first electric energy based on a hybrid energy under the management of the battery management system 32 and the energy management system 31. The hybrid energy source, comprising: any one or more than two kinds of energy sources. Hybrid energy sources, such as green energy sources including, but not limited to, solar, wind, wave, tidal, biomass, LNG, methanol, battery systems, fuel cell systems, supercapacitors.

The dc power distribution system 22 is configured to perform ac-dc-ac power distribution by using an ac-dc-ac power distribution method based on the first electric energy provided by the power source 21 under the management of the battery management system 32 and the energy management system 31, so as to obtain second electric energy. The second electric energy can also supply power to the sun power grid load. That is, the power source 21 is used to power the marine propulsion system and the marine utility grid load 36. The AC-DC-AC networking, namely the AC-DC-AC networking, is that AC is directly rectified into DC through a rectifying unit, the DC is distributed through a DC bus bar, and then the AC is output to each electric load of a ship through an inverter, and the power distribution, frequency conversion and control management units in an AC system are combined in the mode. Compared with the alternating-current networking technology, the direct-current power distribution system omits a distribution board and a part of transformers through alternating-current-direct-current networking, and the direct-current networking is directly connected with the generator and the motor, so that the volume and the weight of the whole power distribution system are greatly reduced, the integration level of equipment is improved, and the occupied area and the volume of the equipment are obviously reduced.

The propulsion system 23 is configured to propel the device to be powered to operate by using the second electric energy obtained by the dc power distribution system 22 through an ac-dc-ac networking manner under the control of the power control system 33.

Therefore, in order to meet the requirements of IMO on energy conservation and emission reduction, the scheme of the invention comprehensively utilizes the AC-DC-AC hybrid electric power of green energy to propel the ship, realizes the stable access and switching of the energy under different scenes, improves the utilization efficiency of the energy, reduces the pollutant emission of the ship, and ensures the safe and reliable operation of the ship when a certain power source fails. And moreover, an alternating-direct-alternating networking technology is adopted, energy storage devices such as a storage battery system and a super capacitor are better compatible, access of new energy resources such as solar energy, a fuel cell system and wind energy is facilitated, the integration level of the electric propulsion system is improved, the size and the weight of the system are reduced, harmonic waves and resonance risks in the whole ship range are eliminated, the propulsion system is ensured to work on an optimal energy consumption curve, and energy consumption and emission are further reduced.

In some embodiments, the power source 21 includes: a fossil fuel based power source 211 and a green energy based power source 212.

Wherein the fossil fuel based power source 211 comprises: at least one of a diesel-electric power unit 41 and an LNG-electric power unit 42.

The green energy type power source 212 includes: at least one of a biomass power generator set 43, a methanol power generator set 44, a solar photovoltaic power generator set 45, a wave energy power generator set 46, a tidal power generator set 47, a storage battery system 48, a super capacitor system 49, a fuel cell system 50 and a shore power supply 51.

For example: as shown in fig. 2 and 3, a diesel-electric multi-energy hybrid ship power system of an ac-dc-ac network includes a port power system and a starboard power system. Taking the port power system as an example, the power source 21 includes a petrochemical fuel power source 211 and a green energy fuel power source 212. The power source 21 is provided with a petrochemical fuel power source 211 and a green energy power source 212, and mainly comprises a diesel generator set, an LNG generator set, a biomass energy generator set, a methanol generator set, a solar photovoltaic generator set, a wind power generation system, a wave energy power generation system, a tidal energy power generation system, a storage battery system, a fuel battery system, a super capacitor system and a shore power supply. The diesel-electric multi-energy hybrid power ship takes various energy sources such as solar energy, LNG, diesel oil, a storage battery system, a fuel cell system, a super capacitor and the like as power sources, and realizes stable and continuous output of power. The two sets of same power systems on the port and the starboard are arranged, so that the redundancy of the system is improved. Load switches and fuses are arranged on each branch of the direct current power distribution system and between the port and starboard direct current buses, timely isolation of fault lines can be achieved, and safety and reliability of the system are improved.

The power source 21 is provided with a petrochemical fuel power source 211 and a green energy power source 212, so that comprehensive utilization of various energy sources can be realized, and the requirements of current global shipping on energy conservation and emission reduction are met. The green energy power source 212 has the characteristics of green, environmental protection, economy and the like, and can reduce CO₂And the emission of pollutants such as NOx, SOx and the like meets the requirements of ecological environment protection and social energy structure transformation. Meanwhile, petrochemical fuels are comprehensively adopted as power sources, the problem that a single new energy source cannot continuously and effectively release electric energy and a stable and good-continuity comprehensive power generation mode is difficult to form is solved, the maneuverability and the operability of the ship are improved, and the problem that the safety and the reliability of the ship are difficult to guarantee when a single power source breaks down is solved.

The wind energy, the solar energy and the shore power can provide power for loads such as daily illumination of the whole ship after the ship is parked in a port, and can also charge the energy storage device of the ship. When the ship runs at an economic sailing speed or under a good sailing working condition, energy storage equipment such as a storage battery system and a super capacitor, a fuel cell and the like can be adopted to supply power for the ship and provide power. When the ship sails at full speed or the energy storage of the energy storage system is insufficient, a diesel generator set, an LNG generator set and the like can be adopted to supply power to the ship and provide power. In addition, in the emission control area, a green energy power source can be adopted, the restriction of emission regulations on ship navigation is avoided, and the flexibility and the applicability of the ship navigation are improved.

In some embodiments, the dc power distribution system 22 includes: the device comprises a direct current processing unit, an alternating current processing unit and a direct current bus. The number of the direct current processing units is the same as the number of power sources of different energy sources in the power source 21. The number of ac processing units is the same as the number of propulsion systems 23 and utility grid loads.

The different number of the direct current processing units are connected to the different number of the alternating current processing units through the direct current buses.

For example: and a direct current processing unit, such as an AC-DC rectifier 221, a DC-DC chopper 222. A dc bus, such as dc bus 223. An alternating current processing unit such as a DC-AC inverter 224. The AC-DC-mating power generation system is provided with a DC bus 223 for connecting a plurality of AC-DC rectifiers 221, DC-DC choppers 222, and DC-AC inverters 224. And the AC-DC rectifier 221 is respectively positioned between the diesel generating set, the LNG generating set, the biomass generating set, the methanol generating set, the shore power supply and the direct-current bus, and is used for converting alternating current generated by the diesel generating set, the LNG generating set, the biomass generating set, the methanol generating set or the shore power supply into direct current and outputting the direct current to the direct-current bus. And the DC-DC chopper 222 is respectively positioned between the storage battery system, the fuel battery system, the super capacitor system, the solar photovoltaic generator set, the wind power generation system, the wave energy generation system and the direct current bus, the energy storage system comprises the storage battery system, the DC-DC chopper 222 between the super capacitor and the direct current bus is used for boosting the voltage to discharge the energy storage system to the direct current bus or reducing the voltage to charge the energy storage system from the direct current bus, and the DC-DC chopper 222 between the solar photovoltaic generator set, the wind power generation system, the wave energy generation system, the tidal power generation system and the fuel battery and the direct current bus is used for converting direct current with variable amplitude into direct current with stable amplitude to discharge to the direct current bus. And the DC-AC inverter 224 is respectively positioned between the direct current bus and the propulsion motor and between the direct current bus and the daily power grid transformer and is used for converting direct current on the direct current bus into alternating current and outputting the alternating current to the ship propeller and the daily power grid load. And the load switches are respectively positioned between each power source and the corresponding rectifier or chopper and between each inverter and the corresponding propulsion motor or the ship daily power grid transformer, and are used for controlling the on-off of each branch and cutting off smaller overload current. And the fuses are respectively positioned on the lines of the rectifier and the direct current bus, the lines of the chopper and the direct current bus and the lines of the direct current bus and the inverter and are used for quickly cutting off the branch when each branch has a fault such as large overload current or short-circuit current, so that the safety of a power distribution system is guaranteed.

In some embodiments, one of the dc processing units comprises: the circuit comprises a first load switch, a direct current processing module and a first fuse. The first load switch, the direct current processing module and the first fuse are sequentially arranged between one energy power source in the power source 21 and the direct current bus. The direct current processing module comprises: an AC-DC rectifier or a DC-DC chopper.

Specifically, a first load switch, such as first load switch 16. A first fuse, such as first fuse 24. A dc power distribution system 22, comprising: a port direct current power distribution system and a starboard direct current power distribution system. The port power system comprises a power source 21, a port direct current power distribution system in a direct current power distribution system 22 and a propulsion system 23. Taking the port side of the ship as an example, the number of the dc processing units is the same as the number of the power supply sources in the power source 21, and each dc processing unit is connected between the corresponding power supply source and the port side dc bus 25. A port side dc power distribution system among the dc power distribution systems 22, including: a dc processing unit, a port dc bus 25 and an ac processing unit. Each direct current processing unit comprises: a first load switch 16, a port rectifier module and a first fuse 24 connected in sequence between the respective power supply and a port dc bus 25. A port rectifier module comprising: an AC-DC rectifier or a DC-DC chopper. An AC-DC rectifier or a DC-DC chopper in the DC processing module comprises: the port rectifier module, which is matched to the diesel genset 41, is a first AC-DC rectifier 411. The port rectifier module, which is matched to the LNG power plant 42, is a second AC-DC rectifier 412. The port rectifier module, which is matched with the biomass energy generator set 43, is a third AC-DC rectifier 413. The port rectifier module, which is matched to the methanol generator set 44, is a fourth AC-DC rectifier 414. The port rectifying module matched with the solar photovoltaic generator set 45 is a first DC-DC chopper 415. The port rectifier module, which is matched to the wave energy generator set 46, is a second DC-DC chopper 416. The port rectifier module, which is matched to the tidal power Generator set 47, is a third DC-DC chopper 417. The port rectifier module, which is matched to the battery system 48, is a fourth DC-DC chopper 418. The port rectifier module, which is matched to the super capacitor system 49, is a fifth DC-DC chopper 419. The port rectifier module, which is matched to the fuel cell system 50, is a sixth DC-DC chopper 420. The port rectifier module, which is matched to the shore power supply 51, is a fifth AC-DC rectifier 421.

One of the communication processing units, comprising: the second fuse, exchange processing module and second load switch. Further comprising: a motor or a transformer. The second fuse, the alternating current processing module and the second load switch are sequentially connected between the direct current bus and the motor or the transformer.

In particular, a second load switch, such as second load switch 17. A second fuse, such as second fuse 52. Motors, such as a first motor 29, a second motor 30, etc. A transformer, such as transformer 40, is connected to the marine utility grid load 36.

Therefore, the networking mode of AC-DC-AC is adopted, good compatibility of various green energy power sources can be achieved, the whole power distribution system has corresponding power distribution structures for different power sources, and stable access and switching of different new energy power sources can be guaranteed. The diesel-electric multi-energy hybrid power ship comprehensively utilizes various new energy and energy storage equipment as power sources, reduces the use of fossil fuel, and reduces CO₂The emission of greenhouse gases is equal, the requirements of IMO on energy conservation and emission reduction are met, and the method has the characteristics of environmental protection, economy and safety. Multiple power sourcesAccording to different navigation scenes and driver instructions, stable access and switching can be realized, the energy utilization efficiency is improved, and the navigation safety and the cruising power of the ship are ensured.

In some embodiments, a different number of the communication processing units includes: the device comprises a first alternating current processing unit, a second alternating current processing unit and a third alternating current processing unit. The first alternating current processing unit, such as a first inversion module. And a second AC processing unit, such as a second inverter module. And a third AC processing unit, such as a third inverter module.

The propulsion system 23, comprising: a main propeller 34 and a lateral propeller 35. The main thruster 34 is connected to the dc bus through a first ac processing unit. The side thruster 35, is also connected to the dc bus through a second ac processing unit.

And the domestic power grid load is connected to the direct current bus through a third alternating current processing unit.

Specifically, taking a port side of a ship as an example, the communication processing unit comprises: the device comprises a first inversion module, a second inversion module and a third inversion module. A propulsion system 23, comprising: a main propeller 34, a side propeller 35. And a first inversion module connected between the main thruster 34 and the port direct current bus 25. And a second inversion module connected between the side thruster 35 and the port direct current bus 25. And the third inversion module is connected between the ship daily power grid load 36 and the port direct current bus 25.

A first inverter module comprising: a first motor 29, a second load switch 17, a first DC-AC inverter 26, and a second fuse 52, which are connected in sequence between the main thruster 34 and the port side DC bus 25. A second inverter module comprising: and a second motor 30, a second load switch 17, a second DC-AC inverter 27, and a second fuse 52, which are connected in this order between the side thruster 35 and the port direct current bus 25. A third inverter module comprising: and the transformer 40, the second load switch 17, the third DC-AC inverter 28 and the second fuse 52 are sequentially connected between the ship daily power grid load 36 and the port side direct current bus 25.

Specifically, the port diesel generator set 41 is connected to a port rectifier, such as a first AC-DC rectifier 411, and the port rectifier, such as the first AC-DC rectifier 411, is connected to the port direct-current bus 25, and the port rectifier, such as the first AC-DC rectifier 411, converts the alternating current generated by the diesel generator set into direct current to supply power to the port direct-current bus 25. The port DC bus 25 is connected to a port inverter, such as a third DC-AC inverter 28, and converts the DC power on the port DC bus 25 into AC power through the port inverter, such as the first DC-AC inverter 26 and the second DC-AC inverter 27, to power a port main thruster motor, such as the first motor 29, or a port side thruster motor, such as the second motor 30, which in turn rotates a port main thruster 34 or a port side thruster 35 that propels the vessel. In addition, the port DC bus 25 is connected to a port inverter such as a third DC-AC inverter 28, and the DC power on the port DC bus 25 is converted into AC power by the port inverter such as the third DC-AC inverter 28, and a port transformer such as a transformer 40 is connected to the port inverter such as the third DC-AC inverter 28, and the DC power on the port DC bus 25 is stepped down to supply the marine utility grid load 36. In addition, the port direct current bus 25 is connected with a port chopper such as a fourth DC-DC chopper 418 or a fifth DC-DC chopper 419 to step down the direct current on the port direct current bus 25, charge a port battery system such as the battery system 48 or a port super capacitor system such as the super capacitor system 49, and store the electric energy generated by the diesel generator set 41. The electric propulsion system structure and current conversion corresponding to the wave energy power generation system 46 and the tidal power generation system 47 are the same as those of the port solar photovoltaic generator set 45. The electric propulsion system structure and current conversion corresponding to the port side LNG power generation unit 42, the biomass power generation unit 43 and the methanol power generation unit 44 are the same as those of the port side diesel power generation unit.

When the illumination is rich, the port solar photovoltaic generator set 45 is connected with a port chopper such as the first DC-DC chopper 415, the port chopper such as the first DC-DC chopper 415 is connected with the port direct current bus 25, and the direct current with the variable amplitude generated by the solar photovoltaic generator set is converted into direct current with stable amplitude through the port chopper such as the first DC-DC chopper 415, and is discharged to the port direct current bus 25. The port DC bus 25 is connected to port inverters such as a first DC-AC inverter 26 and a second DC-AC inverter 27, and converts the DC power on the port DC bus 25 into AC power through the port inverters such as the first DC-AC inverter 26 and the second DC-AC inverter 27, so as to supply power to a port main propeller motor such as a first motor 29 or a port side propeller motor such as a second motor 30, and further to rotate a port main propeller 34 or a port side propeller 35 that propels the ship. In addition, the port DC bus 25 is connected to a port inverter such as a third DC-AC inverter 28, and the DC power on the port DC bus 25 is converted into AC power by the port inverter such as the third DC-AC inverter 28, and a port transformer such as a transformer 40 is connected to the port inverter such as the third DC-AC inverter 28, and the DC power on the port DC bus 25 is stepped down to supply the marine utility grid load 36. In addition, the port direct current bus 25 is connected with a port chopper such as a fourth DC-DC chopper 418 or a fifth DC-DC chopper 419 to step down the direct current on the port direct current bus 25, charge a port battery system such as the battery system 48 or a port super capacitor system such as the super capacitor system 49, and store the electric energy generated by the solar photovoltaic generator set 45.

The port fuel cell system 50 is connected to a port chopper such as a fifth AC-DC rectifier 421, and the port chopper such as the fifth AC-DC rectifier 421 is connected to the port direct-current bus 25, and the direct-current power having a varying amplitude generated by the fuel cell system is converted into direct-current power having a stable amplitude by the port chopper such as the fifth AC-DC rectifier 421, and discharged to the port direct-current bus 25. The port DC bus 25 is connected to port inverters such as a first DC-AC inverter 26 and a second DC-AC inverter 27, and converts DC power on the port DC bus 25 into AC power through the inverters 26 to 27 to power a port main propeller motor such as a first motor 29 or a port side propeller motor such as a second motor 30, which in turn rotates a port main propeller 34 or a port side propeller 35 that propels the vessel. In addition, the port DC bus 25 is connected to a port inverter such as a third DC-AC inverter 28, and the DC power on the port DC bus 25 is converted into AC power by the port inverter such as the third DC-AC inverter 28, and a port transformer such as a transformer 40 is connected to the port inverter such as the third DC-AC inverter 28, and the DC power on the port DC bus 25 is stepped down to supply the marine utility grid load 36.

A port battery system such as the battery system 48 is connected to a port chopper such as the fourth DC-DC chopper 28, and the port chopper such as the fourth DC-DC chopper 28 is connected to the port direct-current bus 25, and the direct-current power discharged from the port battery system such as the battery system 48 is boosted by the port chopper such as the fourth DC-DC chopper 28 and discharged to the port direct-current bus 25. The port DC bus 25 is connected to port inverters such as a first DC-AC inverter 26 and a second DC-AC inverter 27, and converts DC power on the port DC bus 25 into AC power through the inverters 26 to 27 to power a port main propeller motor such as a first motor 29 or a port side propeller motor such as a second motor 30, which in turn rotates a port main propeller 34 or a port side propeller 35 that propels the vessel. In addition, the port DC bus 25 is connected to a port inverter such as a third DC-AC inverter 28, and the DC power on the port DC bus 25 is converted into AC power by the port inverter such as the third DC-AC inverter 28, and a port transformer such as a transformer 40 is connected to the port inverter such as the third DC-AC inverter 28, and the DC power on the port DC bus 25 is stepped down to supply the marine utility grid load 36. In addition, a port chopper such as the fourth DC-DC chopper 28 can step down the direct current on the port direct current bus 25 to charge a port battery system such as the battery system 48 and store the electric energy generated by the diesel generator set 41, the LNG generator set 42, the biomass energy generator set 43, the methanol generator set 44, the solar photovoltaic generator set 45, the wave energy generation system 46, and the tidal energy generation system 47. The structure and current conversion of the electric propulsion system corresponding to the port super capacitor system, such as super capacitor system 49, is the same as that of the port battery system.

The shore power supply 51 is connected with a port rectifier such as a fifth AC-DC rectifier 421, the port rectifier such as the fifth AC-DC rectifier 421 is connected with the port direct-current bus 25, and the port rectifier such as the fifth AC-DC rectifier 421 converts the alternating current accessed by the shore power supply 51 into direct current to supply power to the port direct-current bus 25. The port direct current bus 25 is connected with a port chopper such as a fourth DC-DC chopper 418 or a fifth DC-DC chopper 419, and the direct current on the port direct current bus 25 is reduced to charge a port storage battery system such as the storage battery system 48 or a port super capacitor system such as the super capacitor system 49.

The starboard power system has the same working principle as the port power system. The port direct current bus 25 and the starboard direct current bus are connected through the first load switch 16, and the first fuse 24 is arranged on the connection line, so that the first load switch 16 and the first fuse 24 can realize the quick separation of the two direct current buses. All be equipped with first fuse 24 on every branch road of boats and ships driving system, can be when the branch road breaks down, trouble branch road is kept apart in the express delivery, does not exert an influence to other branch roads.

In some embodiments, the main thruster 34, employs an integrated fully slewing ring drive permanent magnet tunnel thruster; the side propeller 35 adopts a propeller propulsion device. The integrated full-revolving ring-drive permanent magnetic tunnel propulsion unit comprises: an integrated propulsion unit 231 and a propulsion control device 232. For example: the propulsion system 23 is an integrated full-revolving ring-drive permanent magnet tunnel propulsion device, and comprises an integrated propulsion unit 231 and a propulsion control device 232.

Wherein the integrated propulsion unit 231 comprises: ring drive permanent magnet machine 2311, paddle 2312, kuppe shell 2313 and water lubricated bearing 2314. The blades 2312 are located in the driving center of the ring-drive permanent magnet motor 2311, and are integrally arranged in the air guide sleeve housing 2313 together with the ring-drive permanent magnet motor 2311. The water lubricated bearings 2314 are positioned on two sides of an integrated structure formed by the blades 2312 and the ring-drive permanent magnet motor 2311. For example: the integrated propulsion unit 231 includes a ring drive permanent magnet motor 2311, blades 2312, a nacelle housing 2313, and a water lubricated bearing 2314. The ring drive permanent magnet motor 2311 includes a nail with electrical coil windings and a stator with permanent magnets. The blades 2312 are located in the drive center of the permanent magnet motor and are placed integrally with the motor within the spinner housing 2313. The water lubricated bearings 2314 are located on both sides of the integrated structure of the paddle-motor and transmit thrust generated by the rotation of the paddle.

The propulsion control device 232 includes: including DI digital controller 2321, central processor 2322, signal amplifier 2323 and communicator 2324. The central processing unit 2322 performs data analysis after receiving an operation command of the equipment to be powered, sends a driving signal to each DI digital controller 2321, and transmits the driving signal to the ring drive type permanent magnet motor 2311 after being output by the signal amplifier 2323, and the communication connector 2324 can connect a plurality of propulsion control devices 232 of the equipment to be powered to form a master-slave or master-master control mode to provide power for driving of the equipment to be powered. For example: propulsion control device 232 is integrated into propulsion system 23 and includes, among other things, DI digital controller 2321, central processor 2322, signal amplifier 2323, and communications 2324. The central processing unit 2322 analyzes data after receiving the ship control command, sends a driving signal to each DI digital controller 2321, transmits the driving signal to the ring drive type permanent magnet motor after being output by the signal amplifier 2323, and the communication connector 2324 can connect a plurality of propulsion control devices 232 of the whole ship to form a master-slave or master-master control mode to provide power for ship driving. The integrated full-revolving ring-driving type permanent magnet tunnel propulsion device can rotate by 360 degrees, directly cools the motor through seawater, and is water-lubricated and pollution-free.

In some embodiments, the energy management system 31 includes: a main controller 311 and a sub-controller 312. Each of the sub-controllers 312 is connected to the main controller 311.

The power control system 33 includes: a center control box 331, a machine side control box 332, a remote control panel 333 and a display panel 334. The machine side control box 332, the remote control panel 333 and the display panel 334 are all connected to the central control box 331.

Specifically, when the ship runs under a sufficient illumination condition, the solar photovoltaic generator set 45 is used for supplying power. When the ship runs at the economical speed, the storage battery system 48, the fuel cell system 50 and the super capacitor system 49 are used for supplying power. When the energy storage of the ship is insufficient or the ship advances at the full navigational speed, the LNG generator set 42, the diesel generator set 41 and the like are adopted to supply power to the ship. The solar photovoltaic generator set 45, the LNG generator set 42 or the diesel generator set 41, the storage battery system 48, the fuel cell system 50 and the super capacitor system 49 can simultaneously supply power to the ship, and the EMS31 determines the electric quantity distribution of each power source according to the state of the ship. When the ship is in a berthing state, the storage battery system 48 and the supercapacitor system 49 are charged with the shore power supply 51.

Therefore, in the AC-DC-AC networking, the DC power grid is inverted into three-phase AC by the inverter power supply to supply power, the inverter adopts the sine wave filter, the waveform quality of output voltage is cleaner than that of a power supply generated by a ship body AC generator, the introduced harmonic pollution is less, and the harmonic of the generator set is isolated by the DC bus, so that the harmonic of the generator set is not influenced. In addition, in the AC-DC-AC networking, the harmonic characteristics of each device cannot be influenced mutually, the whole ship power grid cannot be influenced, and the influence of the system on the harmonic aspect is reduced.

Through a large number of tests, the technical scheme of the invention is adopted, and the ship is propelled by comprehensively utilizing the AC-DC-AC hybrid electric power of green energy, so that the stable access and switching of the energy under different scenes are realized, the utilization efficiency of the energy is improved, and the pollutant emission of the ship is reduced. By providing the ship hybrid power supply system capable of using various energy sources as power, the environmental pollution caused by emissions generated during the operation of the ship can be reduced, and the improvement of the environmental protection performance of the ship is facilitated.

According to the embodiment of the invention, the ship corresponding to the ship hybrid power supply system is also provided. The vessel may include: a hull 1. Further comprising: the hybrid power supply system for a ship as described above. The hybrid power supply system for the ship is connected to the ship body 1 and can supply power to the ship body 1.

Specifically, the hull 1 is constituted by members such as a deck 11, side plates 12, a bottom plate 13, a keel 14, and ribs 15. The deck 11 is a planar structure located above the inner bottom plate 13 for covering and horizontally dividing the space in the ship into layers. The keel 14 is a longitudinal member centrally located in the base of the hull for connecting the bow and stern posts and is adapted to withstand the longitudinal bending moments of the hull. The ribs 15 are transverse formations located within the hull to bear transverse water pressure and maintain the geometry of the hull. The side plates 12 and the bottom plate 13 together form the geometric shape of the ship body and bear various external forces such as longitudinal bending force, water pressure, wave impact force and the like. That is, the deck 11 is located above the inner bottom plate 13, horizontally dividing the space in the ship into a layered planar structure, the keel 14 is located in the center of the base of the hull, one longitudinal member connecting the fore and aft columns, the ribs 15 are located in the hull, and the side plates 12 and the bottom plate 13 together form the geometry of the hull.

Under the condition that the equipment to be powered is a ship, if the ship adopts solar power generation, a plurality of solar panels are arranged in a matrix and positioned above the deck 11, and the direction of the solar panels is adjusted through the angle adjusting mechanism. The solar panels are arranged in a matrix, so that the intensity of the solar panels for receiving solar radiation can be improved, and the light energy can be utilized to the maximum extent. The direction through angle adjustment mechanism adjustment solar cell panel includes: the solar cell panel is mechanically controlled by a driving motor to adjust the solar cell panel to a proper angle.

Under the condition that the equipment to be powered is a ship, if the ship adopts wind power generation, the horizontal shaft wind power generator is fixed at the tail part of the ship through the supporting rod.

Under the condition that the equipment to be powered is a ship, if the ship generates electricity by adopting wave energy, the rolling generators and the pitching generators are symmetrically installed on the port and the starboard of the ship in pairs respectively, the influence of the generators on the stability of the ship can be avoided by symmetrical installation, and the utilization rate of the wave energy can be improved by the aid of the plurality of pitching and rolling generators.

Therefore, the diesel-electric multi-energy hybrid power ship adopts pure electric propulsion, avoids the problems of large shafting occupation space, small use cabin capacity, complex propulsion system structure, large maintenance workload, low overall propulsion efficiency and the like in a diesel engine propulsion mode, and has the advantages of flexible layout, convenience in installation, convenience in maintenance, high propulsion efficiency, low vibration noise and the like.

Since the processing and functions of the ship of this embodiment are basically corresponding to the embodiments, principles and examples of the apparatus shown in fig. 1, the description of this embodiment is not given in detail, and reference may be made to the related descriptions in the embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted, and the ship is propelled by comprehensively utilizing the AC-DC-AC hybrid electric power of green energy, so that the stable access and switching of the energy under different scenes are realized, the utilization efficiency of the energy is improved, the pollutant emission of the ship is reduced, and the safe and reliable operation of the ship is ensured when a certain power source fails.

According to an embodiment of the present invention, there is also provided a power supply control method for a ship corresponding to the ship, as shown in fig. 4, which is a schematic flow chart of an embodiment of the method of the present invention. The power supply control method of the ship may include: step S110 to step S130.

At step S110, a first electric energy is provided by the power source 21 based on a hybrid energy under the management of the battery management system 32 and the energy management system 31. The hybrid energy source, comprising: any one or more than two kinds of energy sources. Hybrid energy sources, such as green energy sources including, but not limited to, solar, wind, wave, tidal, biomass, LNG, methanol, battery systems, fuel cell systems, supercapacitors.

In step S120, under the management of the battery management system 32 and the energy management system 31, the dc power distribution system 22 performs ac-dc-ac grid distribution based on the first power supplied by the power source 21 to obtain a second power. The second electric energy can also supply power to the sun power grid load. That is, the power source 21 is used to power the marine propulsion system and the marine utility grid load 36. The AC-DC-AC networking, namely the AC-DC-AC networking, is that AC is directly rectified into DC through a rectifying unit, the DC is distributed through a DC bus bar, and then the AC is output to each electric load of a ship through an inverter, and the power distribution, frequency conversion and control management units in an AC system are combined in the mode. Compared with the AC networking technology, the AC-DC-AC DC power distribution system omits a distribution board and a part of transformers through AC-DC-AC networking, and the DC networking is directly connected with a generator and a motor, so that the volume and the weight of the whole power distribution system are greatly reduced, the integration level of equipment is improved, and the occupied area and the volume of the equipment are obviously reduced.

Wherein, carry out interchange-direct-exchange network distribution, include: and enabling a generator set in the power source 21 to select a variable rotating speed mode to operate according to the load power change in the ship, so as to adjust the rotating speed of the generator set according to different loads in the ship and enable the ship to work in a set efficiency area.

In step S130, the propulsion system 23 uses the second electric energy obtained by the dc power distribution system 22 through the ac-dc-ac networking mode under the control of the power control system 33 to propel the device to be powered to operate.

In the AC networking, the synchronous generator intelligently outputs constant-frequency and constant-voltage AC, when the ship load changes, the change of the load power can be adapted only by cutting off or adding the synchronous generator set, and the switching mode is nonlinear, so that a power source such as a diesel generator set cannot work at the optimal power efficiency point, and the fuel consumption of a propulsion system is improved. In an AC-DC-AC network, the generator set can select a variable rotating speed mode to operate according to the change of load power, and the rotating speed of the generator set is adjusted according to different loads, so that the ship always works in a high-efficiency area, the ship propulsion system is ensured to work in an optimal energy consumption curve, and the energy consumption and emission of the ship are reduced.

In some embodiments, the first electrical energy is provided by the power source 21 under the management of the battery management system 32 and the energy management system 31 based on a hybrid energy source, including any one of the following power supply scenarios.

First power supply situation: and if the illumination intensity in the running environment of the ship reaches the set illumination condition, the solar photovoltaic generator set 45 in the power source 21 is adopted for supplying power.

The second power supply situation: if the operating speed of the marine vessel is within a set first speed range, power is supplied using at least one of a battery system 48, a supercapacitor system 49, and a fuel cell system 50 in the power source 21.

The third power supply situation: and if the stored energy of the ship is lower than a set energy condition or the running speed of the ship is in a set second speed range, at least one of an LNG generator set 42 and a diesel generator set 41 in the power source 21 is adopted for supplying power. The lower limit of the second speed range is greater than the upper limit of the first speed range, typically when the vessel is at full speed.

A fourth power supply scenario: if the vessel is in a moored state, at least one of the battery system 48 and the supercapacitor system 49 is charged using a shore power supply 51 in the power source 21.

Since the processing and functions implemented by the method of this embodiment substantially correspond to the embodiments, principles, and examples of the ship, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.

Through a large number of tests, the technical scheme of the embodiment is adopted, the alternating current-direct current-alternating current hybrid electric propulsion ship comprehensively utilizing green energy is used, stable access and switching of energy sources under different scenes are achieved, the utilization efficiency of the energy sources is improved, pollutant emission of the ship is reduced, the alternating current-direct current-alternating current networking technology is adopted, the alternating current-direct current hybrid electric propulsion ship is better compatible with energy storage equipment such as a storage battery system and a super capacitor, access of new energy sources such as solar energy, a fuel cell system and wind energy is facilitated, the integration level of the electric propulsion system is improved, the size and the weight of the system are reduced, harmonic waves and resonance risks in the whole ship range are eliminated, the propulsion system is guaranteed to work on an optimal energy consumption curve, and energy.

In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A hybrid power supply system for a ship, comprising: a powertrain system and a control system; the power system and the control system are connected, and both the power system and the control system can be connected to equipment to be powered;

the power system comprises: the power source (21), the direct current distribution system (22) and the propulsion system (23) are sequentially connected;

the control system comprises: an energy management system (31), a battery management system (32), and a power control system (33); the battery management system (32), the energy management system (31) and the power control system (33) are connected in sequence; the power source (21) is also respectively connected with the battery management system (32) and the energy management system (31); the direct current distribution system (22) is also respectively connected with the battery management system (32) and the energy management system (31); the propulsion system (23) is also connected with the power control system (33);

wherein the content of the first and second substances,

the power source (21) configured to provide first electric energy based on a hybrid energy source under management of the battery management system (32) and the energy management system (31); the hybrid energy source, comprising: any one or more than two kinds of energy sources;

the direct current power distribution system (22) is configured to perform alternating current-direct current-alternating current networking power distribution in an alternating current-direct current-alternating current mode on the basis of the first electric energy provided by the power source (21) under the management of the battery management system (32) and the energy management system (31) to obtain second electric energy; the second electric energy can also supply power to a daily power grid load;

the propulsion system (23) is configured to utilize the second electric energy obtained by the direct current power distribution system (22) in an alternating current-direct current-alternating current networking mode to propel the equipment to be powered to operate under the control of the power control system (33).

2. Hybrid marine power supply system according to claim 1, wherein the power source (21) comprises: a fossil fuel-based power source (211) and a green energy-based power source (212); wherein the content of the first and second substances,

the fossil fuel-based power source (211) comprising: at least one of a diesel generator set (41) and an LNG generator set (42);

the green energy-based power source (212) comprising: at least one of a biomass energy generator set (43), a methanol generator set (44), a solar photovoltaic generator set (45), a wave energy generator set (46), a tidal energy generator set (47), a storage battery system (48), a super capacitor system (49) and a fuel cell system (50); the green energy type power source (212) further comprises: a shore power supply (51).

3. Hybrid marine power supply system according to claim 1 or 2, characterized in that the direct current distribution system (22) comprises: the system comprises a direct current processing unit, an alternating current processing unit and a direct current bus; the number of the direct current processing units is the same as that of power sources of different energy sources in the power source (21); the number of said AC processing units is the same as the number of said propulsion systems (23) and the loads of the domestic electric network;

4. The hybrid power supply system for a marine vessel according to claim 3, wherein,

one of the dc processing units, comprising: the system comprises a first load switch, a direct current processing module and a first fuse; the first load switch, the direct current processing module and the first fuse are sequentially arranged between one energy power source in the power source (21) and the direct current bus; the direct current processing module comprises: an AC-DC rectifier or DC-DC chopper;

one of the communication processing units, comprising: the second fuse, the alternating current processing module and the second load switch; further comprising: a motor or transformer; the second fuse, the alternating current processing module and the second load switch are sequentially connected between the direct current bus and the motor or the transformer.

5. The hybrid marine power supply system of claim 3, wherein a different number of said AC processing units comprises: the system comprises a first alternating current processing unit, a second alternating current processing unit and a third alternating current processing unit;

the propulsion system (23) comprising: a main propeller (34) and a lateral propeller (35); the main thruster (34) connected to the direct current bus through a first alternating current processing unit; the lateral thruster (35), also connected to the direct current bus through a second alternating current processing unit;

6. Hybrid marine power supply system according to claim 5, characterized in that the main thruster (34) is an integrated fully slewing ring drive permanent magnet tunnel propulsion; the side propeller (35) adopts a propeller propulsion device; the integrated full-revolving ring-drive permanent magnetic tunnel propulsion unit comprises: an integrated propulsion unit (231) and a propulsion control device (232); wherein the content of the first and second substances,

the integrated propulsion unit (231) comprising: the wind power generator comprises a ring drive type permanent magnet motor (2311), blades (2312), a guide cover shell (2313) and a water lubrication bearing (2314); the blades (2312) are positioned in the driving center of the ring drive type permanent magnet motor (2311) and are integrally arranged in the air guide sleeve shell (2313) together with the ring drive type permanent magnet motor (2311); the water lubrication bearings (2314) are positioned on two sides of an integrated structure formed by the blades (2312) and the ring-drive permanent magnet motor (2311);

the propulsion control device (232) comprising: comprises a DI digital controller (2321), a central processing unit (2322), a signal amplifier (2323) and a communication communicator (2324); the central processing unit (2322) analyzes data after receiving an operation command of the equipment to be powered, a driving signal is sent to each DI digital controller (2321), the driving signal is output by the signal amplifier (2323) and then is transmitted to the ring drive type permanent magnet motor (2311), and the communication connector (2324) can be connected with a plurality of propulsion control devices (232) of the equipment to be powered to form a master-slave or master-master control mode to provide power for driving of the equipment to be powered.

7. Hybrid marine power supply system according to claim 1 or 2, characterized in that said energy management system (31) comprises: a main controller (311) and a sub-controller (312); each sub-controller (312) is connected with the main controller (311);

the power control system (33) comprising: a central control box (331), a machine side control box (332), a remote control panel (333) and a display panel (334); the machine side control box (332), the remote control panel (333) and the display panel (334) are all connected to the central control box (331).

8. A marine vessel, comprising: a hull (1); further comprising: the hybrid marine power supply system of any one of claims 1 to 7; the hybrid power supply system for the ship is connected to the ship body (1) and can supply power to the ship body (1).

9. A power supply control method for a ship according to claim 8, comprising:

providing, by a power source (21), first electric energy based on a hybrid energy source under management of the battery management system (32) and the energy management system (31); the hybrid energy source, comprising: any one or more than two kinds of energy sources;

under the management of the battery management system (32) and the energy management system (31), the direct current power distribution system (22) performs alternating current-direct current-alternating current networking power distribution on the basis of the first electric energy provided by the power source (21) in an alternating current-direct current mating power mode to obtain second electric energy; the second electric energy can also supply power to a daily power grid load;

wherein, carry out interchange-direct-exchange network distribution, include: enabling a generator set in the power source (21) to select a variable rotating speed mode to operate according to load power change in the ship, so as to adjust the rotating speed of the generator set according to different loads in the ship and enable the ship to work in a set efficiency area;

and propelling the equipment to be powered to operate by a propelling system (23) by utilizing second electric energy obtained by the direct current power distribution system (22) in an alternating current-direct current-alternating current networking mode under the control of the power control system (33).

10. The power supply control method of a marine vessel according to claim 9, wherein supplying the first electric power based on a hybrid energy source under the management of the battery management system (32) and the energy management system (31) by a power source (21) includes:

if the illumination intensity in the running environment of the ship reaches a set illumination condition, a solar photovoltaic generator set (45) in the power source (21) is adopted for supplying power;

if the running speed of the ship is within a set first speed range, supplying power by using at least one of a storage battery system (48), a super capacitor system (49) and a fuel cell system (50) in the power source (21);

if the stored energy of the ship is lower than a set energy condition or the running speed of the ship is in a set second speed range, at least one of an LNG generator set (42) and a diesel generator set (41) in the power source (21) is adopted for supplying power; the lower limit of the second speed range is greater than the upper limit of the first speed range, typically when the vessel is at full speed;

if the vessel is in a berthing state, charging at least one of a battery system (48) and a supercapacitor system (49) with a shore power supply (51) in the power source (21).