232results about "Power plants using propulsion unit combinations" patented technology

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 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 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.

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.

To provide a propulsion system, a control program, and a control method for a vessel capable of suppressing deterioration in fuel consumption along with load variation in a propulsion propeller in a vessel including an engine and a rotary machine.SOLUTION: A propulsion system for a vessel includes an engine, a rotary machine, a power converter, and a controller, the controller acquires torque of the engine, torque of the rotary machine, angular speed of the rotary machine, and prefixed moment of inertia for rotational axis conversion of the rotary machine, calculates an estimation value for load torque of the propulsion propeller by using equation of motion for the rotary axis system of the rotary machine, generates a torque command value regarding the torque to be generated by the rotary machine from the propulsion force command value, and compensates the torque command value to cancel fluctuation component of the estimation value of the load torque.SELECTED DRAWING: Figure 2

The invention discloses a liquid hydrogen high-temperature superconducting motor and magnetofluid dual-power propulsion system, and aims to solve the problems that an existing ship propulsion system is single in power mode and insufficient in power density. The system comprises a liquid hydrogen storage and supply unit, a cooling unit, an energy conversion unit, a superconducting motor propulsion unit and a magnetofluid propulsion unit, the liquid hydrogen storage and supply unit conveys liquid hydrogen to the superconducting part through the cooling loop, the liquid hydrogen is converted into hydrogen through the heat exchanger after being cooled, the energy conversion unit converts the hydrogen into electric energy and outputs the electric energy in a matched mode, and the superconducting motor propulsion unit and the magnetic fluid propulsion unit generate mechanical energy or electromagnetic force through the electric energy to drive a ship. And the superconducting component is cooled by the cooling loop. The liquid hydrogen in the system has the dual functions of a cooling medium and fuel, a coolant and fuel do not need to be additionally configured, the requirements for silence, high thrust and rapid maneuvering are met, the power density is high, the environmental protection property is good, and the system is suitable for high-performance propelling scenes such as ships, especially submarines.

To provide a vessel capable of improving propulsion performance of each method when a hull is propelled by a wind power propulsion unit and when the hull is propelled by a propeller.SOLUTION: A vessel 1 comprises: a propeller 12 that generates thrust for a hull 11; and a wind power propulsion unit 10 that propels the hull 11 by means of wind power. Thus, the vessel 1 can propel the hull 11 by the wind power propulsion unit 10 when wind is strong, and propel the hull 11 by the propeller 12 when wind is weak. The hull 11 is propelled toward a bow during machine traveling where the hull 11 is propelled by the propeller 12, and the hull 11 is propelled toward a stern during sailing where the hull 11 is propelled by the wind power propulsion unit 10. In this case, the vessel 1 can be structured so as to suit the machine traveling for propulsion of the vessel 1 toward the bow. The vessel 1 can be structured so as to suit the sailing for propulsion of the vessel 1 toward the stern.SELECTED DRAWING: Figure 3

The application discloses a multi-mode switching security joint control method, system, device and storage medium suitable for a hybrid system ship, and belongs to the technical field of automatic control of a ship hybrid system. The control method comprises the following steps: when the hybrid system security fails, if the mode switching device operates normally, stopping the mode conversion work of the hybrid system, controlling the main engine remote control system, the motor remote control system and the energy management system to enter the main engine mode, if the main engine also fails, continuing to detect the working state of the shaft motor, if the shaft motor can operate normally, entering the PTH working mode, otherwise, repairing the hybrid system of the ship; after the hybrid system of the ship fails, the application coordinates the main engine remote control system, the motor remote control system and the energy management system, and unifies the switching to the main engine mode or the PTH mode, so that the working modes of various devices of the hybrid system are synchronously matched, and accidents endangering the safety of the hybrid system are avoided.

A ship propulsion machine (1) includes a propeller (2), an engine (4) configured to rotate the propeller (2), the engine (4) serving as a first power source, a motor (17) configured to rotate the propeller (2), the motor (17) serving as a second power source, an inverter (19) configured to control driving of the motor (17), an engine drive shaft (21) connected to a crank shaft (6) of the engine (4), a motor drive shaft (22) connected to an output shaft (18) of the motor (17), a transmission shaft (23) connected to a propeller shaft (3) provided with the propeller (2), and a power switching mechanism (24) configured to switch a connection mode of the engine drive shaft (21), the motor drive shaft (22), and the transmission shaft (23) to switch a power source for rotating the propeller (2) between the engine (4) and the motor (17).

The present invention relates to a ship propulsion system wherein, when a change in the output of a main engine occurs or is expected, a controller variably controls the power withdrawal force of a shaft generator in a direction in which the change in the output of the main engine is counterbalanced, thereby maintaining the output of the main engine to be smooth, and the main engine's fuel efficiency and power supply stability engine can thus be improved.

This invention discloses a range-extended hybrid motorboat system and control method, belonging to the field of new energy engineering technology. The system includes: a human-machine interface unit for receiving operation commands and displaying system status; a system control unit for receiving user commands and feedback information and issuing control commands to corresponding units; a high- and low-voltage unit for storing, converting, and distributing electrical energy; and a power integration unit for providing fuel power for the range-extended mode, including an engine, engine controller, electronically controlled ISG motor, electronically controlled drive motor, cooling device, fuel tank, and liquid level sensor. This invention adopts a range-extended hybrid mode that uses fuel to generate electricity and the motor for drive. When the battery is low, it continuously charges the battery or directly powers the electronically controlled drive motor. Energy can be quickly replenished by refueling, effectively solving the problems of short range and inconvenient charging of pure electric motorboats. It combines the advantages of low noise and zero emissions of pure electric drive with the long range of fuel power.

The present disclosure relates to a marine propulsion unit, comprising at least one motor for rotating a pitchable propeller around an axis, the pitchable propeller being connected with a first shaft and a second shaft, the first shaft being rotated by a first power way and the second shaft being rotated by a second power way, wherein the first power way and the second power way are controllable independently of each other so that a first rotation speed (rpm) of the first shaft and a second rotation speed (rpm) of the second shaft can vary in relation to each other, wherein a coupling is arranged between the first shaft, the second shaft and the pitchable propeller for changing a pitch angle of the pitchable propeller when the first rotation speed and / or second rotation speed vary in relation to the other.

The invention discloses a method for testing and analyzing hybrid driving performance of an LNG dual-fuel power one-driving-two trailing suction dredger. The method comprises the following steps: preparing before testing; setting a plurality of types of test conditions in combination with the operation process of the trailing suction dredger; setting a power supply mode of the trailing suction dredger; the performance of the trailing suction dredger is tested in a fuel oil mode and a fuel gas mode of the trailing suction dredger; calculating fuel consumption per unit voyage and fuel consumption per unit power in the fuel oil mode and the fuel gas mode, and drawing a corresponding energy consumption curve; and determining an optimal working condition setting scheme of the trailing suction hopper dredger based on the unit voyage fuel consumption, the unit power fuel consumption and the corresponding energy consumption curve. According to the method, the operation process of the trailing suction dredger is combined, all possible operation working conditions are considered, testing is carried out under the fuel oil mode and the fuel gas mode, performance indexes of the trailing suction dredger under different actual working conditions are evaluated, and a quantitative basis can be provided for design optimization and scheduling strategy formulation of the LNG power engineering ship.

A hybrid power module for ship propulsion relates to the field of marine power technology. To address the problems of existing ship propulsion modules, which often employ electric motors, traditional heat engines, and parallel gearboxes for propulsion, resulting in large, complex systems with low space utilization and poor operational stability, this invention utilizes a highly integrated parallel reduction gearbox, a flexible coupling, and an electric motor. This achieves high power density and reduces the size by half compared to existing ship propulsion modules, improving hull space utilization. Furthermore, it can directly drive the propeller shaft without external power. With increased power, a diesel engine or gas turbine can be introduced to drive the propeller shaft in parallel with this module. The forward and reverse rotation of the propeller shaft can be achieved by engaging or disengaging forward and reverse clutches. This module enables operation and switching of six different main engine modes, providing high redundancy in the power system and ensuring operational stability. It has a wide range of applications. This invention is applicable to ships.

The embodiment of the utility model provides an extended-range electric ship, and relates to the technical field of electric ships. The extended-range electric ship comprises a ship body and a power module. The ship body comprises a bow, a bearing cabin and a stern which are sequentially arranged in the length direction of the ship body, an outboard outboard engine is arranged at the end, away from the bow, of the stern, the power module is arranged at the stern and comprises a power battery assembly, a fuel storage assembly and a fuel power generation assembly, and the fuel power generation assembly is connected with the fuel storage assembly. The fuel power generation assembly is used for supplying power to the power battery assembly. Under the condition that the power battery assembly has the same battery capacity, the fuel storage assembly and the fuel power generation assembly can improve the cruising ability of ship driving. The power modules are all arranged at the stern, the integration level of the power modules is improved, and when the fuel power generation assembly charges the power battery assembly, a short conveying cable can be arranged, so that the loss of electric quantity during charging is reduced, and the cruising ability of the ship during running is further improved.

Provided is a hybrid propulsion vessel that may be environmentally friendly and propelled with high efficiency by utilizing both electric power and heat, two energy forms generated in a fuel cell simultaneously, and by obtaining propulsive force as a propeller is rotated by any one or both of a steam turbine power source driven by heat as a primary power source and an electric motor power source driven by electric power as a secondary power source.

A motor assembly includes an electric motor and an overrunning clutch wherein a shaft of the overrunning clutch is adapted to engage with an external engine, the shaft is connected to an inner member of the overrunning clutch, and the outer member of the overrunning clutch is adapted to engage with a rotor shaft of the electric motor.

The application discloses a marine hydrogen fuel internal combustion engine power system and a control method, and relates to the technical field of ship power systems.The system comprises an energy management unit, a hydrogen engine, a clutch, a storage battery, a reversible motor, a gear box, a propeller, an AC / DC bidirectional electric energy converter and daily loads.Through the design of four working modes of motor propulsion, internal combustion engine propulsion, internal combustion engine propulsion charging and hybrid propulsion, and the construction of an energy control strategy based on the combination of a logic threshold value and fuzzy control, the optimized operation of the power system is realized.Through the clean combustion characteristics of the hydrogen internal combustion engine and the optimized energy distribution control, the oil energy consumption and river pollutant emission are significantly reduced under the premise of meeting the complex navigation power demand of the ship, the service life of the power system components is prolonged, the control strategy does not need an accurate mathematical model, the robustness is high, the adaptability is wide, and the control strategy is suitable for the control scene of the nonlinear, time-varying and pure lag ship power system.

A jet propulsion boat includes: a boat body; a propulsion device that imparts propulsion force to the boat body to propel the boat body; an engine and an electric motor that drive the propulsion device; and a control device that determines which of an engine mode and an electric mode is to be used as an operation mode of driving the propulsion device in accordance with a condition, the engine mode configured to drive the propulsion device with the engine and the electric mode configured to drive the propulsion device with the electric motor while stopping the engine, and controls the engine and the electric motor to drive the propulsion device in the determined operation mode.

The utility model discloses a powered surfboard which comprises a propeller (3) and a fuel engine (1). The motor (2) is provided with a rotor, and the rotor is directly or indirectly connected with the crankshaft; the first output end of the controller (6) is electrically connected with the fuel engine (1), the second output end of the controller (6) is electrically connected with the motor (2), and the controller (6) is used for determining whether the motor (2) provides auxiliary power for the fuel engine (1) by superposing torque to a crankshaft or not; and the power battery (5) is electrically connected with the motor (2) and the controller (6) respectively and is used for supplying power to the motor (2) and the controller (6). Compared with the prior art, the powered surfboard has the advantages that the powered surfboard can keep strong power and good cruising ability, can meet the requirement for environmental protection, and can solve the problem that a clutch is not durable.

Improvement of a ship propulsion system that issues a warning for the auxiliary ship propulsion unit in a ship having a main propulsion unit and an auxiliary ship propulsion unit. [Solution] The ship propulsion system comprises a ship's main propulsion engine, a ship's auxiliary propulsion engine having a maximum output smaller than the maximum output of the ship's main propulsion engine, and a controller provided in the ship's auxiliary propulsion engine. The controller performs a notification process to notify an external party if an abnormality occurs in the ship's auxiliary propulsion engine.

The invention relates to a transmission and a power system.The transmission comprises a first input shaft, a second input shaft, a transmission structure and a clutch, the first input shaft and the second input shaft are both used for transmitting power for rotation, and the transmission structure is used for enabling the first input shaft and the second input shaft to form transmission connection; the transmission structure is located between the first input shaft and the second input shaft, and when the clutch enables the first input shaft to be connected with the transmission structure, the first input shaft is selectively in power coupling or power decoupling with the second input shaft. According to the technical scheme, the first input shaft and the second input shaft output power through the transmission structure in a transmission mode, power convergence is achieved through the transmission structure, and therefore the speed changer can achieve the charging effect while achieving the driving effect, and the space occupied by the speed changer can be reduced.

A marine vessel and a method of operating the marine vessel. The marine vessel comprises a power generation system comprising a nuclear reactor and a generator. The nuclear reactor is coupled with the generator to generate electricity. The marine vessel may also include a propulsion system including an engine and a propeller that receives torque from the engine to move the hull through a body of water surrounding the hull. The marine vessel may be part of a temporary power system having a cable that electrically connects the generator with an onshore power distribution system. A plurality of buoys may support the cable between the marine vessel and the onshore power distribution system. A method of operating the marine vessel may include starting the nuclear reactor while the marine vessel is sailing and maintaining the nuclear reactor in a standby state.

The invention relates to the technical field of ship energy management, in particular to an energy consumption management and control method and system for an intelligent ship, and the method comprises the steps: carrying out the working condition self-adaptive switching and precise management and control of an oil-electricity hybrid power system, combining with the real-time optimization of a hydraulic dynamometer on the power output of an engine, effectively avoiding the operation of the engine in a low-efficiency interval, and improving the energy efficiency. And the fuel consumption is obviously reduced. The energy consumption prediction and optimization model based on machine learning can realize prospective management and control of ship energy consumption, and passivity and experience dependence of traditional energy consumption management are avoided; the problems that most ship energy consumption management and control are in a passive response mode, the self-adaptive optimization capability based on an intelligent algorithm is lacked, the management and control strategy cannot be dynamically adjusted according to the navigation working condition, and the refinement degree is insufficient are solved.

The purpose of this invention is to provide a collaborative control method for a ship hybrid intelligent power generation unit based on a torque observer. The method includes an ammonia fuel engine and a three-phase permanent magnet synchronous motor. The ammonia fuel engine uses throttle torque control, and the three-phase permanent magnet synchronous motor uses speed control. The method employs a pre-set smoke limit lookup table, an no-load ammonia injection quantity MAP lookup table, a speed-regulating ammonia injection quantity MAP lookup table, and a feedforward ammonia injection quantity dynamic correction lookup table. The smoke limit lookup table uses boost pressure, boost temperature, and airflow as inputs; the no-load ammonia injection quantity MAP lookup table uses cooling water temperature and estimated speed as inputs; the speed-regulating ammonia injection quantity MAP lookup table uses pedal position and estimated speed as inputs; and the feedforward ammonia injection quantity dynamic correction lookup table uses estimated speed and estimated torque as inputs. This method comprehensively optimizes the ammonia injection quantity to control the ammonia engine speed. This invention estimates the engine speed using the motor speed and the crankshaft angle position using the motor rotor position, thereby saving on the cost of engine crankshaft sensors.

The invention discloses a hybrid power output control method and device based on emission optimization, and belongs to the field of ship power system control, and the method comprises the steps: predicting the propulsion power demand of a next time step according to the propulsion power data of a historical time step; determining a first combustion state of the main engine at the current time step according to the first tail gas component data, and obtaining a multi-modal feature vector in combination with a first load state of the engine; obtaining a first main engine output power decision of an optimal first prediction Q value based on a deep neural network model according to the multi-modal feature vector; wherein the deep neural network is obtained by using a deep reinforcement learning algorithm and training through a reward function with tail gas emission minimization as a target; and controlling the hybrid power output system to execute power distribution operation according to the propulsive power demand and the first main engine output power decision. According to the invention, the problem of excessive exhaust emission caused by unreasonable power distribution of the hybrid power system can be solved.