Simulation experimental platform and simulation experimental method of ship carbon neutral fuel power system

Abstract

The present invention provides a ship carbon neutral fuel power system simulation experiment platform, comprising: an energy storage unit, a fuel supply unit, a fuel storage unit, a new energy power generation unit, a power grid and a frequency conversion unit, a fuel switching unit, a small multi-fuel engine, a high-efficiency propulsion motor, a combined transmission unit, a simulated load unit and an intelligent energy comprehensive management and control center; wherein, the energy storage unit comprises a supercapacitor and a battery pack; the fuel supply unit comprises a methanol supply module, an ammonia supply module and a hydrogen supply module; the fuel storage unit comprises a methanol storage unit, an ammonia storage unit and a hydrogen storage unit; the new energy power generation unit comprises solar power generation, wind power generation and a fuel cell; the power grid and the frequency conversion unit comprise a DC / DC converter, a DC / AC converter and a DC power grid. The platform of the present invention ensures the reliable operation of each device of the entire system through coordination and cooperation, and realizes the efficient use of energy.

Description

Technical Field

[0001] The present invention relates to the field of new energy technologies for ships, and more specifically, to a simulation experimental platform and a simulation method for a carbon-neutral fuel power system for ships. Background Art

[0002] With the continuous development of existing ship technology, many cases of ship pollution have gradually emerged. At the same time, as the situation of air pollution becomes more and more serious, it is necessary to provide a platform that can effectively simulate the entire experimental process. At this stage, existing simulation platforms cannot fully simulate the content of existing technologies. Therefore, it is necessary to provide an experimental simulation platform and simulation experimental method. Summary of the Invention

[0003] The purpose of the present invention is to invent a ship carbon-neutral fuel power system simulation experiment platform and provide a ship carbon-neutral fuel power system simulation experiment method to address the shortcomings of the existing related ship power system simulation experiment platform design schemes.

[0004] The technical means adopted in the present invention are as follows:

[0005] The ship carbon-neutral fuel power system simulation experimental platform includes:

[0006] Energy storage unit, fuel supply unit, fuel storage unit, new energy power generation unit, power grid and frequency conversion unit, fuel switching unit, small multi-fuel engine, high-efficiency propulsion motor, combined transmission unit, simulated load unit and intelligent energy comprehensive management and control center;

[0007] Wherein, the energy storage unit includes a supercapacitor and a battery pack;

[0008] The fuel supply unit includes a methanol supply module, an ammonia supply module and a hydrogen supply module;

[0009] The fuel storage unit includes a methanol storage unit, an ammonia storage unit and a hydrogen storage unit;

[0010] The new energy power generation unit includes solar power generation, wind power generation and fuel cells;

[0011] The power grid and frequency conversion unit includes a DC / DC converter, a DC / AC converter and a DC power grid.

[0012] Furthermore, the ship carbon neutral fuel power system simulation experimental method is characterized by comprising the following steps:

[0013] Step 1: The data acquisition unit in the intelligent energy integrated management and control center collects data in real time and sends the collected data information to the intelligent management and control terminal via 5G wireless communication technology. The data includes at least the operating information of the simulated load, small multi-fuel engine, high-efficiency propulsion motor, the operating information of renewable energy, new energy power generation and storage units, and the safety data of the fuel storage and supply units.

[0014] Step 2: The intelligent management and control terminal analyzes and evaluates the collected data and sends it to the data display unit. The real-time monitoring software of the ship's carbon-neutral fuel power system in the data display unit displays the operating data of each device on the experimental platform, the power optimization results of the power system, the platform's energy efficiency level assessment, and the platform's safety alarm information;

[0015] Step 3: The intelligent energy integrated management and control center combines the power system power optimization results and sends control instructions to the power management and control unit. The power management and control unit combines the internal power distribution model and derives the value of the distribution constant λ based on the power P required by the simulated load. It controls the ECU and DC / AC converter to adjust the output power of the small multi-fuel engine and the high-efficiency propulsion motor.

[0016] Step 4: The intelligent energy integrated management and control center combines the platform energy efficiency level evaluation results and sends control instructions to the energy dispatch management and control unit. The energy dispatch management and control unit combines the internally set fuzzy control rules based on particle swarm optimization to control the output of each energy source.

[0017] Compared with the existing technology, the present invention has the following advantages: The present invention discloses a simulation experimental platform for a carbon-neutral fuel power system for ships, comprising an energy storage unit, a fuel supply unit, a fuel storage unit, a new energy power generation unit, a power grid and frequency conversion unit, a fuel switching unit, a small multi-fuel engine, a high-efficiency propulsion motor, a combined transmission unit, a simulated load unit, and an intelligent energy integrated management and control center. The energy storage unit comprises a supercapacitor and a battery pack; the fuel supply unit comprises a methanol supply module, an ammonia supply module, and a hydrogen supply module; the fuel storage unit comprises a methanol storage unit, an ammonia storage unit, and a hydrogen storage unit; the new energy power generation unit comprises a fuel cell, solar energy, and wind energy; and the power grid and frequency conversion unit comprises a DC / DC converter, a DC / AC converter, and a DC power grid. Among them, a small multi-fuel engine and a high-efficiency propulsion motor are used as energy output devices to provide the required power for the simulated load; wind energy, solar energy and hydrogen fuel cell groups provide energy for the high-efficiency propulsion motor through the power grid and frequency conversion equipment; the energy storage unit composed of supercapacitors and battery packs is used to overcome the shortcomings of solar energy and wind energy output being greatly affected by the environment, and combined with hydrogen fuel cells, it achieves the effect of smoothing peaks and filling valleys to ensure stable energy output; the fuel supply unit and fuel storage unit ensure the fuel supply of the small multi-fuel engine; the fuel switching unit is used to realize the switching of different fuel types; the intelligent energy integrated control center integrates six sub-modules: data acquisition unit, data display unit, power management and control unit, energy scheduling management and control unit, fuel management unit, and safety management and alarm unit, which can realize the real-time collection of the working status of each device by the relevant sensors of the simulation system and display the data through the data display unit. When the simulated load changes, the output power of the high-efficiency propulsion motor and the small multi-fuel engine is adjusted in time through the built-in power distribution algorithm to ensure the reliable operation of each device in the entire system and realize the effective utilization of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 This is the system architecture diagram of the ship carbon-neutral fuel power system simulation experimental platform of the present invention.

[0020] Figure 2 This is a schematic diagram of the intelligent energy integrated management control center of the present invention.

[0021] Figure 3This is a workflow diagram of the simulation experimental method for the ship carbon-neutral fuel power system of the present invention.

[0022] Figure 4 This is a schematic diagram of the power management and control unit's power allocation logic. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] like Figure 1-4 As shown, the present invention provides a simulation experiment platform and simulation experiment method for a ship carbon neutral fuel power system. Specifically, Figure 1 This is the system architecture diagram of the ship carbon-neutral fuel power system simulation experimental platform, which mainly includes energy storage unit, fuel supply unit, fuel storage unit, new energy power generation unit, power grid and frequency conversion unit, fuel switching unit, small multi-fuel engine, high-efficiency propulsion motor, combined transmission unit, simulated load unit, and intelligent energy comprehensive management and control center.

[0026] Among them, the energy storage unit includes a supercapacitor and a battery pack;

[0027] The fuel supply unit includes a methanol supply module, an ammonia supply module, and a hydrogen supply module;

[0028] The fuel storage unit includes a methanol storage unit, an ammonia storage unit, and a hydrogen storage unit;

[0029] New energy power generation units include solar power generation, wind power generation, and fuel cells;

[0030] The power grid and frequency conversion unit include DC / DC (direct current / direct current) converter, DC / AC (direct current / alternating current) converter, and DC power grid.

[0031] The fuel supply module stores fuel separately in a fuel storage unit, which then delivers it to the small multi-fuel engine via a fuel switching unit. The fuel storage unit consists of a methanol fuel storage unit, an ammonia fuel storage unit, and a hydrogen fuel storage unit. The methanol fuel storage unit uses atmospheric pressure tanks for methanol fuel, the ammonia fuel storage unit uses pressurized liquefaction for ammonia fuel, and the hydrogen fuel storage unit uses high-pressure gaseous hydrogen tanks for hydrogen fuel. The fuel switching unit consists of three oil and gas valves and a stepper motor, which controls the three oil and gas valves to switch fuels. Fuel cells, solar energy, wind energy, supercapacitors, and batteries provide DC power, which is fed to the DC grid via DC / DC and bidirectional DC / DC devices. The DC grid converts the DC power to AC via a DC / AC device and delivers it to the high-efficiency propulsion motor. The fuel cell is supplied with hydrogen fuel from the hydrogen fuel supply module, while solar and wind energy generate electricity through solar panels and wind turbines. The small multi-fuel engine and the high-efficiency propulsion motor are connected in parallel, and through the combined transmission unit, the small multi-fuel engine and the high-efficiency propulsion motor jointly provide the required power for the simulated load.

[0032] The intelligent energy integrated management and control center serves as the control center for the entire experimental platform, primarily responsible for data acquisition and display, power management and control, energy scheduling management and control, fuel management, and safety management and alarming. This intelligent energy integrated management and control center consists of an intelligent control terminal, a data acquisition unit, a data display unit, a power management and control unit, an energy scheduling management and control unit, a fuel management unit, and a safety management and alarm unit.

[0033] The function of the data acquisition unit is to collect relevant information of the equipment in the fuel power system simulation platform through various sensors, and send the collected data information to the intelligent management and control terminal through 5G wireless communication technology. Specific implementation method: Through temperature sensors and flow meters, data is collected on the gas production temperature and delivery flow of methanol, ammonia, and hydrogen in the methanol supply system, ammonia fuel supply system, and hydrogen fuel supply system; through pressure gauges and flow meters, data is collected on the storage pressure and delivery flow of methanol, ammonia, and hydrogen in the fuel storage module; Hall current and voltage sensors are used to collect data on the working current and working voltage of fuel cells, solar energy, and wind energy; BMS (battery management system) and CMS (capacitor management system) devices are used to collect data on the storage status of battery packs and supercapacitors; a speed torque meter is used in conjunction with a power analyzer to collect data on the power of small multi-fuel engines; a power meter is used to collect data on the output power of high-efficiency propulsion motors.

[0034] The data display unit has the function of reading relevant data information from the intelligent control terminal and displaying the information on the terminal screen. Specific implementation method: Use Python compiled language to write real-time monitoring software for the ship's carbon-neutral fuel power system. The software will read the operating temperature and gas flow of the methanol, ammonia, and hydrogen fuel supply systems in the intelligent management and control terminal; the storage pressure and consumption of methanol, ammonia, and hydrogen in the fuel storage unit; the voltage and current information of fuel cells, wind energy, and solar energy; the energy storage information of supercapacitors and battery packs; the output power of small multi-fuel engines, high-efficiency propulsion motors, and simulated loads; the decision analysis made by the intelligent management and control terminal based on the collected data; and the safety warnings and alarm information issued by the safety management and alarm unit. The above data will be classified and displayed in the real-time monitoring software for the ship's carbon-neutral fuel power system.

[0035] The power management and control unit receives control instructions from the intelligent management and control terminal based on the operating conditions of the small multi-fuel engine, high-efficiency propulsion motor and simulated load block, and adjusts the output power of the small fuel engine and high-efficiency propulsion motor to meet the power requirements of the simulated load. Figure 4 The specific implementation steps include:

[0036] Step 1: When the power required by the simulated load changes, the intelligent management and control terminal sends a control instruction and the load required power P to the power management and control unit;

[0037] Step 2: After receiving the control information and the required power P, the power management and control unit combines the power allocation model built into the power management and control unit to obtain the power allocation constant λ under the optimal energy consumption;

[0038] Step 3: The power management and control unit sends a control instruction to the fuel switching unit to the ECU (electronic control unit), which controls the valve opening of the fuel supply pipeline of the small multi-fuel engine to control the fuel supply amount, changes the speed of the small multi-fuel engine, and makes the output power P of the small multi-fuel engine m Send control instructions to the DC / AC module to control the input current frequency of the high-efficiency propulsion motor to change the speed of the high-efficiency propulsion motor so that the output power of the high-efficiency propulsion motor P e Reach P·(1-λ). The above-mentioned built-in power allocation process of the power management and control unit is as follows:

[0039] Assuming the small multi-fuel engine power distribution constant λ and the high-efficiency propulsion motor power distribution constant to be (1-λ), the relationship can be obtained:

[0040]

[0041] Among them, P m Output power of small multi-fuel engine; P e is the output power of the efficient propulsion motor; P is the power required by the simulated load.

[0042] The working conditions of high-efficiency propulsion motors and small multi-fuel engines are divided into the following three categories:

[0043] (i) When λ=1, the power required by the simulated load is provided by the small multi-fuel engine working alone.

[0044] (ii) When λ = 0, the high-efficiency propulsion motor alone provides the power required by the simulated load.

[0045] (iii) When λ = 0 to 1, the high-efficiency propulsion motor and the small multi-fuel engine work together to provide the power required for the simulated load.

[0046] Set the equivalent energy consumption evaluation index, the formula is as follows:

[0047]

[0048] Among them, G is the equivalent energy consumed by the small multi-fuel engine and the high-efficiency propulsion motor; P is the power required for the simulated load; g1 and g2 are the energy consumption rates of the small multi-fuel engine and the high-efficiency propulsion motor corresponding to the load; M1 is the fuel cost of the small multi-fuel engine; M2 is the electricity cost of the high-efficiency propulsion motor.

[0049] By constructing an optimization decision model, the value of λ when the equivalent energy consumption index G is minimized under different required power P is calculated, and the P-λ curve is drawn.

[0050] According to the optimal power distribution relationship (P-λ curve) under different load requirements, the output power of the small multi-fuel engine and the high-efficiency propulsion motor is determined.

[0051] The main function of the energy scheduling management and control unit is to receive control information sent by the control terminal, and control the methanol production of the methanol fuel supply module, the ammonia production of the ammonia fuel supply module, and the hydrogen production of the hydrogen fuel supply module according to the power requirements of the small multi-fuel engine to ensure the stability and economy of the operation of the small multi-fuel engine; receive scheduling information sent by the control terminal, and control the energy scheduling of fuel cells, wind energy, solar energy, and energy storage equipment according to the power requirements of the high-efficiency propulsion motor. It is used to ensure the operating stability and work efficiency of the high-efficiency propulsion motor. Its specific implementation process includes:

[0052] Step 1: Obtain the SOC (state of charge) value information of the battery pack and supercapacitor collected by the BMS and CMS devices in the intelligent control terminal;

[0053] Step 2: According to the fuzzy control rules based on particle swarm optimization developed in the energy dispatch management and control unit, the fuel cell, wind energy, solar energy, supercapacitor and battery pack are controlled in different working states and output powers, thereby meeting the energy requirements of the efficient propulsion motor while improving the overall performance and energy efficiency of the system. The specific implementation methods of the fuzzy control rules based on particle swarm optimization developed in the energy dispatch management and control unit include:

[0054] When the efficient propulsion motor power P e When the demand is small and the SOC value of the battery and supercapacitor is less than the lower limit m, the fuel cell alone provides energy, and its output power is P fc , when the efficient propulsion motor power demand P e Within the rated output power range of the fuel cell, the fuel cell will give priority to charging the supercapacitor while providing the power required for the efficient propulsion motor. When the supercapacitor SOC value is large, the battery will be charged.

[0055] When the efficient propulsion motor power P e When the demand is small and the battery SOC is greater than the upper limit n, the battery supplies energy to the high-efficiency propulsion motor, and its output power is P bat .

[0056] When the efficient propulsion motor power P e When the demand is small and the supercapacitor SOC is greater than the upper limit n, the supercapacitor supplies energy to the high-efficiency propulsion motor, and its output power is P sc .

[0057] When the efficient propulsion motor power P eWhen the demand is medium, and the supercapacitor SOC is greater than the SOC lower limit m, and the battery SOC value is less than the lower limit m, the supercapacitor and fuel cell jointly supply energy to the high-efficiency propulsion motor, and their output powers are P sc and P fc .

[0058] When the efficient propulsion motor power P e When the demand is medium, the battery SOC is greater than the lower limit m, and the supercapacitor SOC is less than the lower limit m. The battery and fuel cell jointly provide energy for the high-efficiency propulsion motor, and their output power is P bat and P fc .

[0059] When the efficient propulsion motor power P e When the demand is high, the fuel cell, supercapacitor and battery together provide energy for the high-efficiency propulsion motor, and their output power is P fc 、P sc 、P bat .

[0060] At the same time, when the supercapacitor SOC value or the battery SOC is less than the lower limit value m, it is charged by wind energy and solar energy devices.

[0061] Since the formulation of fuzzy rules based on expert experience is highly subjective, it is not necessarily optimal. The fuzzy rules optimized based on particle swarm optimization can improve the accuracy and rationality of fuzzy logic and obtain the optimal P fc 、P uc 、P bat value, thereby improving the overall working performance and energy efficiency level of the system.

[0062] The safety management and alarm unit mainly ensures the safety of personnel and property when a ship encounters an accident such as fuel leakage through detection, alarm, and cut-off measures, and prevents these accidents from worsening.

[0063] Its specific functions are as follows:

[0064] When the thermometer and pressure gauge in the fuel storage system detect an abnormal increase in temperature and pressure in the fuel storage tank, an alarm will be issued and the pressure relief valve will be opened to release pressure;

[0065] When the flow meter and pressure gauge in the fuel supply unit detect an abnormal increase in the pressure or flow in the fuel delivery pipeline, an alarm is issued, the fuel supply is cut off, and the safety valve is opened to release the pressure;

[0066] When the Hall current and voltage sensors in the new energy power generation unit detect excessive current and voltage fluctuations, an alarm is issued and the output of the battery or supercapacitor is automatically controlled to smooth out the fluctuations of the new energy power generation unit.

[0067] When the BMS and CMS devices detect that the SOC value of the battery pack and supercapacitor is lower than the minimum safe operating value, an alarm will be issued and the connection with the DC grid will be cut off;

[0068] When the speed torque meter detects abnormal speed changes of the multi-fuel engine, it will issue an alarm, immediately stop the fuel supply, and automatically disconnect the small multi-fuel engine from the entire simulation experiment platform;

[0069] When the power meter detects abnormal output power of the high-efficiency propulsion motor, the system immediately issues an alarm and promptly cuts off the connection between the high-efficiency propulsion motor and the DC grid.

[0070] In addition, combined with the ship carbon neutral fuel power simulation experiment platform system framework, the present invention provides a ship carbon neutral fuel power system simulation experiment method, including the following steps:

[0071] Step 1. The data acquisition unit in the intelligent energy integrated management and control center collects the simulation platform equipment data in real time, and sends the collected data information to the intelligent management and control terminal through 5G wireless communication technology. The data includes at least the working information of the simulated load, small multi-fuel engine, and high-efficiency propulsion motor, the working information of renewable energy, new energy power generation and storage units, and the safety data of the fuel storage and supply units.

[0072] Step 2. The intelligent management and control terminal in the intelligent energy integrated management and control center analyzes, evaluates and processes the collected data, and sends it to the data display unit. The real-time monitoring software of the ship's carbon-neutral fuel power system in the data display unit displays the operating data of each device on the experimental platform, the power optimization results of the power system, the platform's energy efficiency level assessment, and the platform's safety alarm information.

[0073] Step 3: The intelligent energy integrated management control center combines the power system power optimization results to control the power management and control unit, optimizes and adjusts the output power of the small multi-fuel engine and high-efficiency propulsion motor, and ensures that the entire power system is in the optimal operating range.

[0074] Step 4: The intelligent energy integrated management control center combines the platform's energy efficiency level assessment results to control the energy scheduling management and control unit to optimize and adjust the energy supply of the small multi-fuel engine and high-efficiency propulsion motor to ensure that the entire power system has a high energy efficiency level.

[0075] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0076] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Ship carbon neutral fuel power system simulation experimental platform, characterized by: include: Energy storage unit, fuel supply unit, fuel storage unit, new energy power generation unit, power grid and frequency conversion unit, fuel switching unit, small multi-fuel engine, high-efficiency propulsion motor, combined transmission unit, simulated load unit and intelligent energy comprehensive management and control center; Wherein, the energy storage unit includes a supercapacitor and a battery pack; The fuel supply unit includes a methanol supply module, an ammonia supply module and a hydrogen supply module; The fuel storage unit includes a methanol storage unit, an ammonia storage unit and a hydrogen storage unit; The new energy power generation unit includes solar power generation, wind power generation and fuel cells; The power grid and frequency conversion unit include a DC / DC converter, a DC / AC converter and a DC power grid; After obtaining relevant parameters, the intelligent energy integrated management and control center outputs load control signals, power output control signals for the small multi-fuel engine and the high-efficiency propulsion motor, fuel supply control signals for the small multi-fuel engine, and energy source selection control signals for the high-efficiency propulsion motor through a control model. By simulating load changes, the system can mimic the load fluctuations during the ship's voyage, allowing the system to operate at the optimal operating point even when the simulated load changes. Furthermore, when the load power changes, the power distribution ratio is controlled according to demand, and the operating states of the high-efficiency propulsion motor and the small multi-fuel engine are selected. When the simulated load conditions change, the intelligent energy integrated management and control center sends control instructions to the power management and control unit and the energy dispatching management and control unit through the intelligent control terminal; the power management and control unit calculates the output power of the small multi-fuel engine and the high-efficiency propulsion motor according to the internally set power distribution model to ensure the stable operation of the entire power system; at the same time, according to the output power requirements of the small multi-fuel engine and the high-efficiency propulsion motor, the energy dispatching and control unit controls the fuel supply of the small multi-fuel engine according to the internally set fuel source selection model to ensure the economy of the small multi-fuel engine, and through the internally set fuzzy rules between the battery SOC, supercapacitor SOC, fuel cell, green renewable energy and the power required by the high-efficiency propulsion motor, and by controlling the DC / DC device to realize the decision and control of the working mode of each energy source, thereby ensuring the stability and economy of the high-efficiency propulsion motor; The intelligent energy integrated management and control center is also provided with a safety management and alarm unit; when the temperature and pressure inside the fuel storage tank of the fuel storage unit are abnormal, and / or the pressure or flow in the supply pipeline of the fuel supply unit is abnormal, and / or the voltage and current fluctuations of the power grid and the frequency conversion unit are too large, and / or the internal storage capacity of the energy storage unit is insufficient, and / or the small multi-fuel engine or the high-efficiency propulsion motor is abnormal, an alarm and emergency shutdown are performed; The intelligent energy integrated management and control center sends a power control signal of the small multi-fuel engine according to the power change of the simulated load as a control signal of the ECU to control the speed of the small multi-fuel engine; and uses the power control signal of the high-efficiency propulsion motor as a control signal of the DC / AC module to control the speed of the high-efficiency propulsion motor; The power management and control unit controls the output power of the small multi-fuel engine and the high-efficiency propulsion motor, wherein the ECU controls the valve opening of the fuel supply pipeline of the small multi-fuel engine to control the fuel supply amount, thereby realizing the speed control of the small multi-fuel engine, and further realizing the control of the output power of the small multi-fuel engine; the DC / AC module controls the input current frequency of the high-efficiency propulsion motor, thereby realizing the speed control of the high-efficiency propulsion motor, and further realizing the control of the output power of the high-efficiency propulsion motor.

2. The ship carbon neutral fuel power system simulation experimental platform according to claim 1 is characterized by: The intelligent energy integrated management and control center includes: a data acquisition unit, a data display unit, an intelligent management and control terminal, a power management and control unit, an energy dispatch management and control unit, a fuel management unit, and a safety management and alarm unit; Through the intelligent management and control terminal, data collection, display, power management and control, energy dispatch management and control, fuel management, safety management and alarm are realized.

3. The ship carbon neutral fuel power system simulation experimental platform according to claim 2 is characterized by: The data acquisition unit collects data on the gas production temperature and delivery flow of methanol, ammonia and hydrogen in the methanol supply module, ammonia supply module and hydrogen supply module respectively through temperature sensors and flow meters; the data acquisition unit collects data on the storage pressure and delivery flow of methanol, ammonia and hydrogen in the fuel storage module through pressure gauges and flow meters; the data acquisition unit collects data on the working current and working voltage of fuel cells, solar energy and wind energy through Hall current and voltage sensors; the data acquisition unit collects data on the storage status of battery packs and supercapacitors through BMS (battery management system) and CMS (capacitor management system); the data acquisition unit collects data on the output power of small multi-fuel engines through speed and torque meters; The data acquisition unit collects data on the output power of the high-efficiency propulsion motor through a power meter; All data are collected to the intelligent management and control terminal, and the intelligent control terminal processes the data and sends it to the data display unit. The data display unit displays the collected information together with the control decisions made by the intelligent management and control terminal and the safety warnings and alarm information issued by the safety management and alarm unit in real time.

4. A simulation experiment method for a ship carbon-neutral fuel power system, using the system simulation experiment platform described in any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: The data acquisition unit in the intelligent energy integrated management and control center collects data in real time and sends the collected data information to the intelligent management and control terminal via 5G wireless communication technology. The data includes at least the operating information of the simulated load, small multi-fuel engine, high-efficiency propulsion motor, the operating information of renewable energy, new energy power generation and storage units, and the safety data of the fuel storage and supply units. Step 2: The intelligent management and control terminal analyzes and evaluates the collected data and sends it to the data display unit. The real-time monitoring software of the ship's carbon-neutral fuel power system in the data display unit displays the operating data of each device on the experimental platform, the power optimization results of the power system, the platform's energy efficiency level assessment, and the platform's safety alarm information; Step 3: The intelligent energy integrated management control center combines the power system power optimization results and sends control instructions to the power management and control unit. The power management and control unit combines the internal power distribution model and simulates the power required by the load. P Obtain the partition coefficient λ The values of are used to control the ECU and DC / AC devices respectively, and adjust the output power of the small multi-fuel engine and the high-efficiency propulsion motor; Step 4: The intelligent energy integrated management and control center combines the platform energy efficiency level evaluation results and sends control instructions to the energy dispatch management and control unit. The energy dispatch management and control unit combines the internally set fuzzy control rules based on particle swarm optimization to control the output of each energy source.

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