31results about "Power plants using propulsion unit combinations" patented technology

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

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 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.

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.

A watercraft propulsion system includes a main propulsion device attachable to a hull, an auxiliary propulsion device attachable to the hull and having a lower rated output than the main propulsion device, a lift to move up and down a propeller of the auxiliary propulsion device between an underwater position and an above-water position, and a controller. The controller includes a plurality of control modes including a combined use mode in which a propulsive force generated by the main propulsion device and a propulsive force generated by the auxiliary propulsion device are used in combination. The controller is configured or programmed to restrict the main propulsion device and the auxiliary propulsion device from being driven according to the combined use mode when the propeller of the auxiliary propulsion device is in the above-water position.

This invention belongs to the field of marine hybrid power system control and discloses an energy allocation optimization method and system for hierarchical control of a marine DC microgrid. The method includes: establishing a top-level optimized power allocation strategy model with the goal of minimizing diesel generator output and battery life loss; solving the top-level optimized power allocation strategy model using the second-generation non-dominated sorting genetic algorithm NSGA-II and the top-to-bottom solution distance method TOPSIS to obtain the power allocation scheme with optimal overall performance; introducing power regulation and voltage compensation in the intermediate layer, combined with droop control in the execution layer, to form an improved droop control, thereby achieving power allocation and current sharing control. This invention achieves optimal overall performance in marine power systems, including extended battery life, reduced fuel consumption, and efficient, energy-saving, and environmentally friendly operation.

The application belongs to the technical field of ship power system and energy management control, and discloses a hybrid power tugboat adaptive parameter mapping energy management method and system, which comprises a diesel generator unit, a power battery, a super capacitor, an energy management controller and a load. The method obtains a future load prediction sequence through a single load prediction module, extracts prediction mean value, peak value, ramp rate peak value and pulse index and the like characteristics, and generates an adaptive parameter set through a mapping function in combination with the power battery and the super capacitor state, which is used for mode determination, target setting and weight setting; diesel power base load power is generated in a slow cycle, and quadratic programming is solved in a fast cycle in a three-source collaborative and charging mode. The application realizes optimal power distribution of the battery and the super capacitor under multiple constraint conditions, makes the super capacitor preferentially bear the pulse and maintain the target energy band, and limits the battery peak value and the power change rate, so as to reduce operation cost and carbon emission.

Provided are a control system (100) and a ship (1) which can easily switch a navigation mode. The control system (100) controls a ship (1). As a navigation mode of the ship (1), the control system (100) includes an engine-powered driving mode in which the ship (1) is propelled only by a propulsor (12), an engine / sail-powered driving mode in which the ship (1) is propelled by the propulsor (12) and a wind power propulsion unit (10), and a sail-powered driving mode in which the ship (1) is propelled by the wind power propulsion unit (10). In contrast, the control system (100) automatically switches among the engine-powered driving mode, the engine / sail-powered driving mode, and the sail-powered driving mode. Therefore, regardless of the skills of the crews, the control system (100) can automatically switch the navigation mode at a proper timing or with a proper operation. According to the above-described configuration, the navigation mode can be easily switched.

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

A marine hybrid combined cycle power and propulsion system includes a steam turbine (6), at least one gas turbine (8), at least one auxiliary generator (3), an electric propulsion system, and an energy storage system (10), each of which is connected to a section of an AC bus (20, 21). The system further includes a steam source for the steam turbine (6) and a control system for controlling the operation of the steam turbine, the gas turbine, the auxiliary generator, the electric propulsion system, and the energy storage system. The main steam source for the steam turbine is exhaust gas (16) from the gas turbine (8). The main gas source for the gas turbine (8) is boil-off gas from the cargo hold. The AC bus includes a plurality of sections of the AC bus (20, 21, 72, 75, 32, 33) connected together by bus ties that are closed in normal operation to form a closed ring AC bus. The electric propulsion system includes a variable speed drive driving an electric motor (24, 25) that is coupled to a propeller (77) via a drive shaft (76).

The utility model relates to the field of ship side outboard motor, concretely is a novel ship side outboard casing, the upper end fixed mounting of casing left side is equipped with the instrument, the upper end fixed mounting of casing inner chamber is equipped with the engine, the output end of engine is fixedly connected with engine input gear through the pivot, the lower extreme of casing is provided with the gearbox, the left end of gearbox inner chamber is provided with engine output gear. The utility model possesses pure electric, pure engine and hybrid power three modes, can be accurate switching through the controller according to different working condition demand, with the gear drive structure of careful design, the power of engine and motor realizes smooth coupling in the gearbox, reduces the fluctuation and impact in power transmission process, makes the boat operation more stable, provides more comfortable riding experience for the passenger, also is favorable to improving the service life of on -board equipment.

The present application relates to the water surface unmanned ship hybrid power series propulsion system and switching control method, the propulsion system includes propulsion device and propulsion monitoring system, the propulsion device adopts series arrangement to realize transmission connection, including diesel engine, gear box, motor, thrust bearing, shafting and propeller which are arranged in the order from bow to stern; the propulsion monitoring system includes central monitoring station, control box, power management system. The propulsion system makes the unmanned ship meet the high and low speed requirements, realizes the diesel engine as the power source propulsion in high speed working condition, and realizes the motor as the power source propulsion in low speed working condition, which meets the requirement of long time low speed sailing; the propulsion monitoring system automatically controls the diesel engine, propulsion motor and gear box, realizes the switching of propulsion mode, simplifies the complexity of remote control console control, avoids the adverse effect of communication delay on propulsion mode switching, and improves the efficiency of unmanned ship propulsion mode state switching.

The present invention provides a control system and a vessel that can easily switch between navigation modes. [Solution] The control system 100 is a control system 100 for controlling the ship 1, and the ship 1 has three navigation modes: an engine-driven mode in which it is propelled only by the propeller 12, an engine-sail mode in which it is propelled by the propeller 12 and the wind-powered propulsion unit 10, and a sail mode in which it is propelled only by the wind-powered propulsion unit 10. The control system 100 automatically switches between the engine-driven mode, the engine-sail mode, and the sail mode. Therefore, regardless of the skill of the crew, the control system 100 can automatically switch the navigation mode at the appropriate timing and operation. As a result, the navigation mode can be easily switched.

The application discloses a kind of heat management systems applied to hybrid lithium electric power system, comprising: sea water desalination processing device: for the sea water obtained in the process of ship travel is filtered;Lithium battery group: for the power equipment of ship provides electric energy;First temperature sensor: for the temperature of lithium battery group is collected;Oil tank: for the oil required when emergency generator works is stored;Second temperature sensor: for the temperature of oil tank is collected;Emergency generator: for the power equipment of ship provides electric energy;Third temperature sensor: for the temperature of emergency generator is collected;Control system: based on the temperature information conveyed by first temperature sensor, second temperature sensor and third temperature sensor, control sea water desalination processing device, in turn, lithium battery group, oil tank and emergency generator are cooled down.The system is cooled by three levels, to maximize the cooling of seawater to system, realize the reduction of cooling cost.

A vessel configured for transporting cargo can be configured to operate in a supercavitation mode, the supercavitation mode including releasing a fluid at least partially over an external surface, diverting at least a portion of the fluid to a propulsion system, and generating propulsion at least in part from the first fluid. In response to traveling in the supercavitation mode, the vessel can travel at high-speeds with a majority of the hull below a surface of a body of water.

The present application belongs to the field of ship power technology, and relates to a ship ammonia-hydrogen combined power control system and method, comprising a liquid ammonia supply unit, a waste heat recovery unit, a cracking unit, a power generation unit and a control unit. The present application constructs an ammonia-hydrogen combined power control system in which an ammonia-hydrogen internal combustion engine, a turbocharger and a SOFC are deeply coupled at the thermodynamic level. The control unit precisely regulates the ammonia and cracking gas supply flow, so that the sensible heat of the high-temperature cracking gas produced by the ammonia cracker, the waste heat of the ammonia-hydrogen internal combustion engine exhaust gas and the waste heat of the SOFC anode exhaust gas are classified and utilized according to temperature grade. The liquid ammonia is three-stage ladder heated and gasified in the first heat exchanger, the second heat exchanger and the third heat exchanger. The anode exhaust gas of the SOFC is used as the main heat source of the ammonia cracker, and the exhaust gas of the ammonia-hydrogen internal combustion engine is used to drive the turbocharger to work, forming a multi-stage waste heat recovery and energy collaborative regulation mechanism, which significantly reduces the energy consumption of the ammonia online catalytic cracking hydrogen production process.

To provide a method for processing exhaust from an engine which is beneficial from a viewpoint of noise control, a viewpoint of design, and / or a viewpoint of installation.SOLUTION: A vessel propulsion unit (200) is provided. The propulsion unit includes: a stationary unit (215) adapted to receive power from at least one power supply unit (210a. 210b) and adapted to be attached to a hull of a vessel; and a movable unit (220) including one or a plurality of thrust generation devices (230) adapted to convert power received by acting on water transporting the vessel to thrust force. Then, the propulsion unit is adapted to receive exhaust gas from at least two internal combustion engines (210a, 210b), and the movable unit (220) is characterized by being adapted to discharge exhaust gas in water.SELECTED DRAWING: Figure 2

To provide a ship or other vessel that generates electricity so that it can supply power to land when a nuclear reactor is operating at full power. [Solution] A ship and a method for operating a ship. The ship has a power generation system comprising a nuclear reactor and a generator. The nuclear reactor is coupled to the generator to produce electricity. Furthermore, the ship may include a propulsion system comprising an engine and a thruster that receives torque from the engine and moves the ship through the water surrounding the ship. The ship may be part of a temporary power system having an electrical cable that electrically connects the generator to an onshore power distribution system. Multiple buoys may support the electrical cable between the ship and the onshore power distribution system. A method for operating a ship may include the steps of starting the nuclear reactor while the ship is underway and maintaining the nuclear reactor in a standby state.

The application discloses an inland river ship hybrid power system, a remote control system and a control method. The remote control system comprises a mode control module, the mode control module is used to send a mode instruction to control the working mode of the hybrid power system; the working mode comprises a main engine mode, a power input mode, a power output mode and a power return mode; and a main propulsion control module, the main propulsion control module is used to control operation according to the mode instruction. In this way, the mode instruction is sent by the hybrid control module, so that the main propulsion control module controls the hybrid power system to perform specific mode switching operation according to the mode instruction, and the problem of slow system response speed and inflexible mode switching of the existing control system is solved. The control method solves the problem of slow system response speed and inflexible mode switching of the existing control system by effectively controlling the control logic of the mode switching operation, the switching completion operation and the emergency operation.

To provide a ship propulsion system capable of suppressing vibrations during steering. [Solution] The ship propulsion system 100 comprises a main propulsion engine 3, an auxiliary propulsion engine 4, a steering actuator 33, a steering motor 56, and a main controller 101. The main propulsion engine 3 is mounted on the hull 2. The auxiliary propulsion engine 4 is mounted on the hull 2 ​​and has a lower rated output than the main propulsion engine 3. The steering actuator 33 changes the rudder angle of the main propulsion engine 3. The steering motor 56 changes the rudder angle of the auxiliary propulsion engine 4. When steering the hull 2 ​​in a state where the main propulsion engine 3 is not generating thrust and the auxiliary propulsion engine 4 is generating thrust, the main controller 101 controls the steering actuator 33 and the steering motor 56 so that the steering speed of the main propulsion engine 3 is slower than the steering speed of the auxiliary propulsion engine 4.

The invention relates to the technical field of ship power, in particular to a ship hybrid power capacity matching method and system adaptive to multiple sailing characteristics, and the method comprises the steps: obtaining a target data set, and extracting hybrid power capacity characteristics and ship sailing characteristics from the target data set; obtaining the optimal capacity configuration based on the hybrid power capacity characteristics and the ship navigation characteristics; and for the optimal capacity configuration, a capacity matching scheme is obtained in combination with an uncertainty condition, and the robustness of the capacity matching scheme under the uncertainty condition is quantified.

To prevent complication of an internal structure of a hybrid ship propeller and inhibit deterioration of cruising performance of a ship during planing.SOLUTION: A hybrid outboard engine 1 includes: an internal combustion drive propulsion unit 11 which generates propulsion power of a ship by an internal combustion engine; and an electric propulsion unit 30 which generates propulsion power of the ship by an electric motor. The electric propulsion unit 30 is detachably attached to a portion, ranging from a rear part of a middle case 21 to an upper rear part of a gear case 22 in the internal combustion drive propulsion unit 11, and arranged at a position higher than an anti-cavitation plate 23 so that propellers 34, 54 of the electric propulsion unit 30 sink below a surface of water during low speed traveling, which is not in a planing state of the ship and the propellers 34, 54 of the electric propulsion unit 30 get out from under the surface of the water during planing of the ship.SELECTED DRAWING: Figure 2

This invention discloses a method for optimizing the configuration of an integrated power system for multi-energy hybrid ships. The method involves obtaining the propulsion power demand and daily load power demand of the target ship, determining the DC main grid voltage and AC distribution grid voltage, and designing the integrated power system topology. Based on the propulsion power demand and daily load power demand, the methods calculate the capacity of the propulsion inverter, daily inverter, and converter. A multi-objective optimization model for generator configuration is established and solved under constraints to determine the rated power and number of generators. The load curve is analyzed, and energy storage capacity boundaries and load threshold boundaries are set. Based on energy management strategies and a life-cycle cost model, the capacity and number of energy storage systems are determined. Finally, the method outputs the configuration scheme of the integrated power system. This invention enables efficient, economical, and safe operation of the integrated power system for multi-energy hybrid ships, fully leveraging the complementary advantages of generator sets and energy storage systems, and reducing fuel consumption and emissions.

A watercraft propulsion system includes a primary propulsion device, an auxiliary propulsion device, a steering actuator, a steering motor, and a main controller. The primary propulsion device is attached to a hull of a watercraft. The auxiliary propulsion device is attached to the hull and has a smaller rated output than the primary propulsion device. The steering actuator is configured to change a rudder angle of the primary propulsion device. The steering motor is configured to change a rudder angle of the auxiliary propulsion device. The main controller is configured or programmed to control the steering actuator and the steering motor such that a rudder angle change rate of the primary propulsion device is smaller than a rudder angle change rate of the auxiliary propulsion device when steering of the hull is executed in a state in which only the auxiliary propulsion device generates a thrust.

To provide a ship propulsion system capable of improving the performance of the holding function. [Solution] The ship propulsion system 100 includes a main propulsion unit 3, an auxiliary propulsion unit 4, a tilt cylinder 62, hold mode setting buttons 82, 83, 84, and a main controller 101. The main propulsion unit 3 is attached to the hull 2. The auxiliary propulsion unit 4 is attached to the hull 2 ​​and is powered by an electric motor. The tilt cylinder 62 changes the tilt angle θ of the auxiliary propulsion unit 4 relative to the hull 2. The hold mode setting buttons 82, 83, 84 command the execution of a hold mode to hold the hull 2 ​​at a predetermined target position Tp or target heading Td. When the main controller 101 is commanded to execute a hold mode by the hold mode setting buttons 82, 83, 84, it sets the target position Tp or target heading Td based on the tilt angle θ of the auxiliary propulsion unit 4 and executes the hold mode.

A wind propulsion device (1) installed on a ship (2) and configured to generate propulsive force by receiving wind, the wind propulsion device (1) including: a rotor sail body (111) that can rotate around an axis (RC) extending vertically from the hull (3); and a lower cylindrical portion (112) having a cylindrical shape that is provided between the hull (3) and the rotor sail body (111), connected to a lower part of the rotor sail body (111), and configured to rotate integrally with the rotor sail body (111).

[Problem]A method for controlling a ship, a ship control program, a ship control system, and a ship that can improve reliability of a management state of an operation mode are provided. [Solution]The method for controlling a ship is employed in a ship that has a plurality of power sources including a first power source (engine 31) and a second power source (motor 32) and transmits power supplied from at least one of the plurality of power sources to the propulsive force generator 4 through the power transmitter 33 for propulsion of a hull. The control method includes determining at least two of the first power source, the second power source, and the propulsive force generator 4 as comparison targets and comparing the rotational speed between the comparison targets, and determining an abnormality of at least one of an actuator 34 that drives a power transmitter 33 and the power transmitter 33 based on the comparison result on the rotational speed.

The invention provides a control system capable of easily switching navigation modes and a ship. A control system (100) for controlling a ship (1) has, as navigation modes of the ship (1), a turbine navigation mode in which propulsion is performed only by a propeller (12), a sail navigation mode in which propulsion is performed by the propeller (12) and a wind propulsion unit (10), and a sail navigation mode in which propulsion is performed only by the wind propulsion unit (10). The control system (100) automatically switches between a turbine sailing mode, a sail sailing mode, and a sail sailing mode. Therefore, the control system (100) can automatically switch the navigation mode at an appropriate time or action without depending on the skill of the crew or the like. Thus, the navigation mode can be easily switched.