519results about "Power plants using propulsion unit combinations" patented technology

The invention discloses a starting control system and method for a main and auxiliary power hybrid ship, and relates to the field of ship power control, and the system comprises a multi-source data collection module which is used for obtaining a multi-source state data set of a ship power system; the fusion processing module is used for performing feature alignment processing on the multi-source state data set based on a multi-modal sensing data fusion algorithm to generate a hybrid power starting parameter set; the dynamic weight distribution module is used for constructing a dynamic weight distribution matrix according to the hybrid power starting parameter set; the cooperative control module is used for generating a main and auxiliary engine combined starting instruction set based on an improved cooperative control algorithm; and the execution and monitoring module is used for executing the main and auxiliary engine combined starting instruction set in a preset time window and monitoring the transient response characteristic of the propulsion system. According to the starting control system and method for the main and auxiliary power hybrid ship, the starting stability and the energy utilization efficiency of the hybrid ship are improved.

The invention relates to a ship hybrid power energy management method and device, ship equipment and a medium, and belongs to the technical field of energy management.The ship hybrid power energy management method comprises the steps that operation data of a hybrid power ship are obtained, and a hybrid power ship model is constructed based on the operation data of the hybrid power ship; the operation cost and the pollutant discharge cost of the hybrid power ship are calculated based on the hybrid power ship model, and the comprehensive cost is determined based on the operation cost and the pollutant discharge cost; according to the method, the minimum comprehensive cost is taken as an objective function, constraint conditions are set, and parameters of the hybrid power ship model are optimized by adopting a particle swarm optimization algorithm, so that energy management of the hybrid power ship is realized, and optimal energy utilization is realized.

The invention provides an efficient and stable ship hybrid power generation system which comprises a hydrogen production unit and an ammonia supply system, and the hydrogen production unit comprises an ammonia decomposer, a hydrogen separator, a high-pressure hydrogen storage tank, a fuel cell and an ammonia-hydrogen internal combustion engine. The ammonia decomposer enables the ammonia flow to enter the ammonia decomposer in a segmented constant mode for catalytic decomposition through four set working conditions; the hydrogen separator is used for separating and purifying the generated mixed gas, and the separated and purified hydrogen is respectively fed into the fuel cell and the ammonia-hydrogen internal combustion engine through valves for power generation; the molten salt system recycles high-temperature tail gas of the ammonia-hydrogen internal combustion engine through the heat exchanger for heat energy storage and power generation through the steam Rankine cycle system. The regulation and control method is used for stabilizing the system and prolonging the service life of equipment by limiting the dynamic loading rate and start-stop times of the fuel cell and the ammonia-hydrogen internal combustion engine, and is used for waste heat recovery power generation through the molten salt and the steam expansion machine, so that the efficiency of the system is improved.

The invention provides an RNN-A-ECMS diesel-electric hybrid power ship energy control method considering battery life attenuation. The method comprises the steps that a diesel-electric hybrid power ship model is established; an optimized energy management strategy based on a PMP algorithm, wherein the optimized energy management strategy comprises a PMP energy management strategy considering optimization of battery life attenuation; a self-adaptive multi-target energy management strategy based on an RNN recurrent neural network comprises an online energy management strategy combining the RNN recurrent neural network and an A-ECMS self-adaptive equivalent fuel consumption minimum energy management strategy, training of a prediction model RNN recurrent neural network of a battery charge condition SOC reference trajectory, and optimization of control parameters by combining a PSO algorithm and a PMP algorithm. According to the method, the hamiltonian function is improved by establishing the battery semi-empirical life loss model, adding the penalty factor related to the battery life in the PMP energy management strategy and fully considering the influence of the battery output current rate on the battery life loss, so that the multi-objective optimization of the battery life attenuation and the fuel consumption of the diesel engine set is realized.

The invention belongs to the technical field of tugs, and provides an intelligent energy management system of a hybrid power tug, comprising: a sensor for collecting energy consumption and generation conditions of the tug, including measuring battery voltage, current and temperature, and measuring ship speed, acceleration and direction; the data acquisition module is used for transmitting the data collected by the sensor to the processing unit in a digital form and has data synchronization and timestamp functions; the processing unit is used for automatically selecting an optimal operation mode according to the collected data and a preset algorithm; by integrating a plurality of sensors, the energy consumption and generation conditions of the tug can be monitored in real time, including key parameters such as battery voltage, current and temperature and speed and direction of a ship, the data are analyzed through a data processing algorithm, the algorithm adopts an advanced mathematical model and a machine learning technology, and the energy demand can be accurately calculated. And an energy distribution strategy is dynamically adjusted according to actual operation requirements.

The invention discloses a multi-mode coordinated ship main and auxiliary power automatic switching system, which relates to the technical field of ship power systems and comprises a monitoring system, a diagnosis decision system, an execution system, a switching verification system, a maintenance management system and a data communication system. According to the invention, the airborne weather radar, the ship weather instrument and the weather fax receiver are used for monitoring the current weather condition of navigation and predicting the weather condition of a future navigation route, so that a prediction basis is provided for a power system operation mode selected by future ship navigation; meanwhile, the ship weather instrument monitors surrounding wind speed, wind direction, air temperature and humidity data in real time when the ship sails, the current data is stored in the data storage, a database is formed, and a follow-up maintenance management system can predict potential risks according to historical data conveniently.

The marine alcohol-hydrogen power system comprises a methanol fuel tank, a hydrogen storage tank, a methanol extended-range system, a hydrogen fuel cell, a methanol reforming hydrogen production system, an energy storage system, a driving motor, a speed reduction clutch, a propeller and an inverter power supply / load cabinet, the methanol fuel tank is respectively communicated with the input end of the methanol reforming hydrogen production system and the input end of the methanol reforming hydrogen production system, the hydrogen storage tank is connected with the input end of the hydrogen fuel cell, the output end of the methanol reforming hydrogen production system is connected with the input end of the hydrogen fuel cell, and the output end of the methanol reforming hydrogen production system is connected with the input end of the energy storage system. The output end of the hydrogen fuel cell is connected with the input end of the energy storage system, and the output end of the energy storage system is connected with the inverter power supply / load cabinet and the driving motor. According to the invention, the problems of slow dynamic response, poor stability and the like of energy supply of a single fuel cell can be solved.

The invention discloses a hybrid power ship energy management system based on fuzzy control, and relates to the technical field of hybrid power ship energy management, and the hybrid power ship energy management system comprises a state monitoring module, a fuzzy controller module, an energy scheduling module, a power source management module, a monitoring module and a fault diagnosis module. The system has the advantages that intelligent control over hybrid power ship energy management is achieved through the fuzzy controller module in combination with the fuzzy rule base and the membership function, the system can receive data of the state monitoring module in real time, a control decision is generated through fuzzy rule reasoning, and therefore energy of different power sources is accurately distributed, and the energy management efficiency is improved. According to the intelligent energy management and scheduling mode, the energy utilization efficiency of the ship is improved, and the performance of the ship in various sailing states is kept in the optimal state.

The invention provides a box body structure and a hybrid power integrated system comprising the same, and the box body structure is characterized in that a box body space is divided into a hot space area and a cold space area, and high-temperature equipment is placed in the hot space area; equipment with low temperature (low heat productivity) can be placed in the cold space area, heat isolation can be guaranteed through the heat insulation layer, high temperature of the hot space area is prevented from being conducted to the cold space area, the environment temperature of the cold space area is prevented from being affected, and the low-temperature equipment such as a motor placed in the cold space area is further prevented from being affected. The material of the box body is preferably a heat dissipation or heat conduction material; the surface of each wall plate of the box body can be provided with structures such as heat dissipation teeth or heat dissipation grids, so that the heat dissipation area is increased, the strength of the box body is improved, and the weight of the box body is reduced. Sound insulation and / or heat transfer materials are further arranged on the inner side walls of the wall plates of the box body, and sound insulation and heat transfer materials are also arranged at the air inlets and the air outlets of all the heat spaces, so that sound insulation and heat dissipation are facilitated.

A marine AC generator system includes a marine generator driven by an internal combustion engine and configured to generate an AC current and a rectifier configured to rectify the AC current to provide a DC current. At least one battery is configured to receive and be charged by the DC current. A battery powered inverter is configured to be powered by the at least one battery and to generate a variable current output frequency such that an AC electrical power is provided to a load when the marine generator is not running.

The invention aims to provide a solid hydrogen storage fuel cell underwater vehicle hybrid power system coupled with a water management system, and belongs to the field of hybrid power. According to the invention, the hydrogen fuel cell is combined with a common cell, sufficient, stable and efficient power supply is provided for the underwater vehicle, the limitation of a traditional single energy system in the aspects of cruising ability, power output, energy density and the like is solved, and the comprehensive performance of the underwater vehicle is remarkably improved. A water supply and return integrated circulating water pump is adopted, and efficient and rapid circulation of water inside and outside the underwater vehicle is achieved by integrating water supply and drainage functions. The solid hydrogen storage material is adopted to release hydrogen, one part of hydrogen is conveyed to the fuel cell and participates in reaction to provide power output needed by the underwater vehicle, the other part of hydrogen is recycled and assists the hydrogen storage material in injection, and the underwater closed circulation mode of the underwater vehicle is achieved. And efficient operation and effective utilization of energy are ensured.

The invention relates to the technical field of ship power and propulsion control. The invention provides a multi-source cooperative propulsion control method and system based on hybrid power and a straight wing steering oar. The method comprises the following steps: collecting ship motion state parameters and environment parameters in real time; constructing a multi-objective joint optimization model, and solving an optimal power distribution proportion and an optimal thrust vector under the current working condition by adopting a dynamic programming algorithm; based on the optimal power distribution proportion, a fuzzy PID controller is adopted to dynamically adjust the torque coupling ratio of the diesel engine and the motor; according to the optimal thrust vector calculation result, vector synthesis is carried out on the propulsive force and the steering torque; and predicting the motion state of the ship based on an extended Kalman filter, and correcting the weight coefficient of the multi-target joint optimization model on line in combination with the change rate of the channel boundary distance. The problem that adaptability to complex working conditions is insufficient due to the fact that a traditional control strategy does not fully fuse ship motion states and environment parameters is solved.

A vessel hybrid combined cycle power and propulsion system includes a steam turbine, a gas turbine, an auxiliary generator, an electric propulsion drive system, and an energy storage system, each connected to an AC bus. The system further includes a source of steam for the steam turbine, a control system for controlling operation of the steam turbine, gas turbine, auxiliary generators, electric drive propulsion system and energy storage system. The primary source of steam for the steam turbine is exhaust gas from the gas turbine. The primary source of gas for the gas turbine is boil off gas from the cargo hold. The AC bus includes a plurality of sections of AC bus coupled together by bus ties closed in normal operation forming a closed ring AC bus. The electric propulsion drive system includes a variable speed drive, driving an electric motor coupled through a drive shaft to a propeller.

The invention discloses a multifunctional hybrid power system for a ship, relates to the field of ship power control, and solves the technical problems that an existing hybrid ship power system is high in oil consumption and single in function. The device comprises a controller, a motor driving module, an engine power module, an energy storage module, a range-extended power generation module and a propeller, the driving end of the motor driving module is in transmission connection with the propeller, the driving end of the engine power module is in transmission connection with the driving end of the motor driving module, the input and output end of the energy storage module is electrically connected with the input and output end of the motor driving module, and the input end of the energy storage module is electrically connected with the range-extended power generation module. And the motor driving module, the engine power module, the energy storage module and the extended-range power generation module are all electrically connected with the controller. The invention further discloses a control method of the marine multifunctional hybrid power system. According to the invention, the fuel economy of the power system and the flexibility of response to the power system under different loads are improved, and the braking energy recovery of the ship is realized.

The invention discloses a device for starting management of a marine range extender and a control method of the device. The device comprises a storage module, an interactive communication module, an output enabling module, a control module and a man-machine interaction display module. According to the control method, by obtaining working parameters after a system is awakened, whether high voltage is applied or not, whether faults exist or not and shutdown duration are judged, and a pre-starting mode or a to-be-started mode is decided to be entered. During pre-starting, the ISG motor is enabled, parameters are limited, the rotating speed, the torque, the fuel pressure and the like are monitored, and starting is completed or faults are prompted. The range extender can be started after long-term shutdown, response speed and reliability are improved, ship dynamic property and battery safety are guaranteed, and user experience is optimized.

The invention discloses a methanol fuel ship hybrid power system coupled with carbon dioxide in-situ capture and utilization. The methanol fuel ship hybrid power system comprises an SOFC / GT system, a supercritical carbon dioxide cycle power generation system, an organic Rankine cycle power generation system and a carbon dioxide in-situ utilization system. Exhaust gas of a gas turbine in the SOFC / GT system serves as a heat source to be sequentially used for heating cycle working media of the supercritical carbon dioxide cycle power generation system and the organic Rankine cycle power generation system and then enters the carbon dioxide in-situ utilization system. Exhaust gas received by the carbon dioxide in-situ utilization system is condensed through a condenser to separate H2O and then enters a cathode of the porous solid electrolytic cell, the cathode comprises a KOH solution and an anion exchange membrane, an anode comprises water and a cation exchange membrane, an electrode catalyst is bismuth oxide, anode exhaust gas enters the SOFC / GT system, and formic acid discharged by a middle interlayer enters a formic acid storage tank. According to the invention, the carbon dioxide in the waste gas is captured in situ on the methanol fuel ship to generate a high-added-value product, and the energy of a power system is comprehensively utilized.

A multi-power-source vehicle control system comprises: a first power control device configured with one or more power management components, each for generating a corresponding power control signal; a plurality of control units, one of the plurality of control units being connected to the first power control device, the connection among the plurality of control units being configurable to enable a plurality of driving devices to work cooperatively or independently, and each of the plurality of control units being configured to analyze a corresponding power control signal; a plurality of power controllers being correspondingly connected with the plurality of control units and used for outputting drive signals to the corresponding power devices according to the power control signals analyzed by the corresponding control units.

The invention belongs to the technical field of ship control, and particularly relates to a multi-mode switching control device of a ship new energy hybrid power common rail system, which comprises a power cabin, the interior of the power cabin is divided into an internal combustion engine cavity, a motor cavity and a battery cavity through laminates and partition plates, and an internal combustion engine, a motor and a battery pack are respectively mounted in the power cabin; a first paddle shaft is installed at the driving end of the motor, an internal combustion engine power connecting-in mechanism is arranged in the internal combustion engine cavity, a second paddle shaft is installed in the internal combustion engine cavity through the internal combustion engine power connecting-in mechanism, the first paddle shaft and the second paddle shaft penetrate through the power bin, and a transmission mechanism is arranged between the first paddle shaft and the second paddle shaft. The double-propeller reverse braking device has the advantages that double-propeller reverse braking can be completed within the shortest time in a ship braking mode, the ship braking efficiency is greatly improved, fuel is saved, and pollutant emission is reduced.

The invention provides an energy management strategy verification platform for a plug-in series hybrid power ship propulsion system. The energy management strategy verification platform comprises a power source module, a power output module, a load simulation module, a transmission module, a sensor measurement module and a control system module, the power source module outputs electric energy through multi-energy cooperation; the power output module generates propelling power according to the electric energy; the load simulation module simulates load characteristics according to the propulsion power; the transmission module is connected with the power source module and the power output module as well as the power output module and the load simulation module; the sensor measurement module collects operation parameters of the verification platform; and the control system module executes an energy management strategy according to the operation parameters and outputs a control instruction. A graphical programming environment is constructed by adopting a modeling code automatic generation system, and a strategy rapid prototype development verification closed loop is formed in combination with a range extender intelligent start-stop control strategy and a multi-mode power generation control strategy.

The embodiment of the invention discloses a ship hybrid power system based on a multi-source flexible direct-current looped network and a control method of the ship hybrid power system, and can be applied to the technical field of ship control. According to the system, after the natural gas power module, the hydrogen fuel cell power module and the lithium iron phosphate battery power module are arranged, the natural gas power module is connected with the ship gearbox through the first clutch, so that the state that the natural gas power module outputs power to the ship is controlled through the on-off state of the first clutch; meanwhile, the hydrogen fuel cell power module and the lithium iron phosphate battery power module are connected with the multi-source flexible direct-current looped network, so that the states of outputting power to the ship gearbox by the hydrogen fuel cell power module and the lithium iron phosphate battery power module can be controlled through the on-off states of a second clutch and a third clutch; therefore, various multi-source hybrid power modes can be provided for the ship, and the problems that a pure natural gas engine is insufficient in power and a pure electric ship is short in endurance mileage are effectively solved.

The invention discloses a range-extended hybrid motorboat system and a control method, and relates to the technical field of new energy engineering, and the system comprises a man-machine interaction unit which is used for receiving an operation instruction and displaying a system state; the system control unit is used for receiving a user instruction and feedback information and issuing a control instruction to the corresponding unit; the high-low voltage unit is used for storing, converting and distributing the electric energy; and the power integration unit is used for providing a fuel power source for the range extending mode and comprises an engine, an engine controller, an electric control ISG motor, an electric control driving motor, a cooling device, a fuel tank and a liquid level sensor. The range-extended hybrid power mode of fuel power generation and motor driving is adopted, the battery is continuously charged or the electric control driving motor is directly supplied with power when the electric quantity is insufficient, energy can be quickly supplemented through refueling, the problems that a pure electric motorboat is short in endurance and inconvenient to charge are effectively solved, and the service life of the pure electric motorboat is prolonged. The advantages of low noise and zero emission of pure electric drive and long endurance of fuel power are achieved.

The utility model discloses a gearbox for an oil-electricity double-engine ship. The gearbox comprises a box body, the diesel oil input component comprises a first input shaft, a first driving gear is sleeved on the first input shaft, and the first input shaft is provided with a first transmission gear and a first clutch; the reversing shaft part comprises a reversing shaft, a second driving gear is sleeved on the reversing shaft, the reversing shaft is provided with a second transmission gear and a second clutch, and the second transmission gear is meshed with the first transmission gear; the motor input component comprises a second input shaft, the second input shaft is sleeved with a third driving gear in an empty mode, the third driving gear is meshed with a first driven gear, the second driving gear is fixedly sleeved with the first driven gear, and the second input shaft is provided with a third clutch; the output shaft component comprises an output shaft and a second driven gear, and the second driven gear is meshed with the first driving gear and the second driving gear. According to the scheme, the diesel engine or the motor is independently used for driving, intelligent switching of the diesel engine and the motor can be achieved at any speed, oil consumption is reduced, and power performance is improved.

A marine propulsion system includes a controller configured or programmed to perform a rudder angle change control to change a rudder angle of an auxiliary propulsion device by a predetermined angle to one side in a right-left direction of a hull with respect to a forward-rearward direction of the hull so as to move the hull along the forward-rearward direction without rotating the hull when motorized forward-rearward movement is performed to move the hull along the forward-rearward direction by driving the auxiliary propulsion device that is provided to one side of the hull in the right-left direction without generating a thrust from a main propulsion device.

The invention discloses a parallel hybrid power ship transient control system which comprises a propeller and a gear box, the gear box is composed of a clutch a, a clutch b and a gear, the clutch a is sequentially connected with an engine and a CAN bus, and the clutch b is sequentially connected with a torque sensor, a shaft tachometer, a reversible motor, an AC / DC device, a storage battery pack and the CAN bus. The system further comprises a cRIO controller with an acquisition card and an upper computer, wherein the cRIO controller is connected with the CAN bus. The invention further discloses a control method. The optimal reversible motor torque and clutch combination pressure are switched in the switching process of different working modes, so that engine speed fluctuation in the switching process of a ship can be reduced, and the working condition of a transmission system can be improved.

A watercraft propulsion system (100) includes an engine propulsion device (OM) including a power generator (38), an electric propulsion device (EM) connected to a battery (145) charged by the power generator (38), and a controller (101). The controller (101) includes an extender mode in which the electric propulsion device (EM) generates a propulsive force and the power generator (38) of the engine propulsion device (OM) is driven to charge the battery (145). The controller (101) is configured or programmed to change an engine speed of the engine propulsion device (OM) according to a watercraft speed in the extender mode.

The invention provides a multi-working-condition dynamic adaptive ship hybrid power dispatching system, which is applied to the technical field of ship power systems and energy management, and comprises a data exchange module, a working condition module, a hybrid power generation module and an energy management module, wherein the data exchange module realizes cross-protocol data analysis and unified timestamp packaging, and ensures the consistency and real-time performance of data exchange between modules; the working condition module is used for collecting ship working conditions and generating working condition conversion signals, an EMS in the energy management module is used for calculating a scheduling strategy, and the hybrid power generation module executes power distribution and charge-discharge control of the diesel generator set, the axle generator and the battery pack according to the scheduling strategy. Through the data exchange module, the problems of data delay and errors caused by complex protocol fusion and non-uniform clocks are solved, and the dynamic adaptation and response capability of the ship under complex working conditions is effectively improved.

The invention discloses a fuel cell-turbofan engine hybrid power system for a cross-medium aircraft, and relates to the technical field of aero-engines, the system comprises a solid oxide fuel cell, a turbofan engine, a lithium battery, an energy management module, a motor, a propeller, a reforming hydrogen production device and a medium self-adaptive oxidant supply subsystem. In an air flight mode, the system adopts autothermal reforming hydrogen production, a fuel cell and a turbofan engine to cooperatively work, a high-efficiency low-oil-consumption low-speed cruise and high-thrust acceleration mode is provided, and meanwhile, a lithium battery is charged. In the underwater submerging and water surface sailing mode, a turbofan engine flow channel is closed, steam reforming hydrogen production is adopted, a hybrid power system composed of a fuel cell and a lithium battery is used for driving a propeller, the fuel cell provides stable power, and the lithium battery meets the instantaneous high-power requirement. The system solves the problems that a traditional power system is low in efficiency, poor in cruising ability, single in working mode and the like.

The invention provides a hybrid power ship energy optimization method based on an event triggering mechanism, and relates to the technical field of energy management. The method comprises the following steps: establishing a diesel engine torque model, a motor torque model, a fuel consumption model and a carbon emission model as states of the hybrid power system; estimating the state of the current system through volume Kalman filtering, and reducing a state prediction error; establishing a fuel consumption and carbon emission tradeoff model; establishing an event triggering condition; and judging whether the event reaches a trigger level, and optimizing system parameters. According to the hybrid power ship model predictive control energy optimization method based on event triggering, almost the same energy management consumption can be realized with shorter calculation overhead, the ship energy can be reasonably distributed according to the change of a tradeoff coefficient, and the balance between fuel consumption and carbon emission is achieved; and the energy optimization control under the constraint condition is realized.

The invention relates to the technical field of ship propulsion control, in particular to a ship propulsion motor rotating speed control method based on a long short-term memory network, which comprises the following steps of: collecting historical data in a ship operation process within a period of time, preprocessing the historical data and persisting the historical data into a database; reading historical data in the database, and training a long short-term memory (LSTM) network model; a sensor is used for collecting operation parameters of the propulsion motor in real time, and the operation parameters are converted into an input parameter format of the LSTM model. According to the ship propulsion motor rotating speed control method based on the long short-term memory network, key parameters such as the current value and the frequency of a propulsion motor, the rotating speed of a steam turbine and the rotating speed of the propulsion motor are collected in real time, an LSTM model is used for modeling system dynamic characteristics, and an optimal control instruction is generated in combination with an optimization algorithm; and the precision, stability and adaptability of ship propulsion motor rotating speed control are improved.

The invention discloses a ship propulsion system and method, and relates to the technical field of ships, the system comprises a direct current power distribution subsystem, a PTI / PTO motor, a diesel engine, a gearbox, a water-jet propeller and a control subsystem; the direct-current power distribution subsystem is used for supplying power to the PTI / PTO motor; the gear box is used for driving the water-jet propeller under the driving of the PTI / PTO motor and / or the diesel engine so as to propel the ship; and the control subsystem is used for controlling the power flow direction of the PTI / PTO motor and controlling start and stop of the diesel engine, so that the ship operates according to a preset driving mode, and the driving mode comprises a PTI / PTO motor driving mode. By means of the system, when the ship enters a specific area for port operation or sails offshore, the ship is switched to sail in the PTI / PTO motor driving mode, so that the waste gas influence caused by diesel engine driving is avoided, and zero emission is achieved.