System for calculating effective power of rotary drum sail

Abstract

The invention discloses a system for calculating the effective power of a rotary drum sail. The system comprises a pneumatic unit, a power unit, an energy storage unit, an acquisition unit, a controller and a conductive path, the pneumatic unit comprises a plurality of rotating cylinders which are arranged at corresponding positions of the ship to push the ship to sail under the assistance of wind power; the power unit comprises a motor used for driving the rotating cylinders to rotate and an engine used for driving the ship to sail. The energy storage unit is used for storing electric energy for driving the power unit to operate; the acquisition unit is used for acquiring a sensor and a power supply of ship navigation information. There is no need to obtain real-time power data for individual components to telemetry individual hardware circuitry. On the contrary, the power data can be obtained only through software reading, so that the manufacturing cost of the rotary drum sail effective power calculation system is saved, the power consumption and complexity of the rotary drum sail effective power calculation system are reduced, and through the error problem of accumulation calculation, the precision of measuring the power effective value is improved, and the calculation process becomes simple.

Description

Technical Field

[0001] This invention relates to the field of rotary sail technology, and more specifically, to a rotary sail effective power calculation system. Background Technology

[0002] The rotary sail system is a wind-powered ship propulsion technology that generates thrust by rotating a rotary drum driven by an electric motor. It can significantly reduce ship fuel consumption and carbon emissions, meeting the global shipbuilding industry's development needs for energy conservation and emission reduction.

[0003] Currently, about 90% of global trade is conducted via sea. While sea transport offers advantages such as low cost and large capacity, its impact on the global climate due to carbon dioxide emissions is becoming increasingly prominent, leading to continuously rising environmental standards for shipping in various countries. In existing rotary sail systems, to ensure the normal operation of various electrical components, the wind turbine unit needs to provide a large amount of power to the power unit and energy storage unit. However, some of this power is dissipated in the form of losses, without generating any practical utility.

[0004] Meanwhile, existing power calculation schemes have obvious defects: they require real-time monitoring of the power data of individual components to remotely measure individual hardware circuits, resulting in high system manufacturing costs, high power consumption, and complex structures; the error is large when calculating the effective value of power by accumulation, affecting measurement accuracy; and when the ship's sailing speed is abnormal, it is impossible to accurately locate the cause, and there is a lack of targeted power adjustment mechanisms, which restricts the practicality and energy-saving effect of the rotary sail system.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0006] In view of the problems in related technologies, this invention proposes a rotary sail effective power calculation system to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by the present invention is as follows: A rotary sail effective power calculation system includes a wind turbine unit, a power unit, an energy storage unit, a data acquisition unit, a controller, and a conductive path; The wind-powered unit includes several rotary cylinders installed at corresponding positions on the ship to assist in the ship's navigation using wind power. The power unit includes a motor for driving the rotation of each of the rotary drums and an engine for driving the ship's navigation; The energy storage unit is used to store the electrical energy that drives the power unit. The data acquisition unit uses sensors and power sources to collect navigation information from the ship. The power supply is configured to output electrical power for delivery to one or more power nodes, and one or more power monitors are configured to identify power overload conditions based on monitoring the electrical power output by the power supply. Based on the received indication of the power overload condition, the controller transmits instructions to one or more sub-controllers, which instruct each sub-controller to change the operating state of the corresponding power node; The electrical power output from the power source is transmitted along the conductive path at least to the one or more power nodes, and the instructions are transmitted along the conductive path to the one or more sub-controllers.

[0008] Preferably, the utilization rate value for one or more components in the effective power calculation system of the rotary sail is obtained; The utilization value for the one or more components is multiplied by the load factor of the one or more components to calculate the individual power loss of each of the one or more components.

[0009] Preferably, the individual power losses of the one or more components are summed to calculate the power loss index of the rotary sail effective power calculation system.

[0010] Preferably, the activity of the wind turbine unit is evaluated, wherein the activity includes the number of program instances executed by the controller and the load caused by the executed program instances.

[0011] Preferably, the conductive path includes one or more conductors, along which the electrical power is transmitted to the one or more power nodes at least, and along which the instructions are transmitted to the one or more sub-controllers.

[0012] Preferably, a power consumption prediction power metric configured for the computing system is used based on multiple power nodes and multiple sub-controllers. Based on the predicted power consumption and using a power consumption prediction configured for uninterruptible power supply autonomy prediction as input, the autonomy of one or more uninterruptible power supplies of the wind turbine unit is predicted as a power metric.

[0013] Preferably, the prediction of the redundancy level of the controller includes receiving data about the wind turbine unit from a power manager program configured to manage the power requirements of the computing system.

[0014] Preferably, the analysis unit is used to determine the cause based on the wind direction detected by the acquisition unit when the ship's sailing speed obtained by the acquisition unit is unqualified, or to re-determine the rotational speed of each rotary drum based on the wind speed when the sailing speed is initially determined to be unqualified.

[0015] Preferably, the controller is further configured to provide several power adjustment methods for the engine power based on the actual sailing speed of the ship when the angle between the ship's sailing direction and the wind direction is deemed to be qualified, and the adjustment range of each power adjustment method for the engine power is different.

[0016] Preferably, the utilization rate value is obtained for one or more components in the wind turbine unit; The utilization value of one or more components is multiplied by the load factor of the one or more components to calculate the individual power loss of each of the one or more components; and the individual power losses of the one or more components are summed to calculate the power loss index of the rotary sail effective power calculation system.

[0017] The beneficial effects of this invention are: it simplifies the power acquisition method, eliminates the need for a separate telemetry hardware circuit, and acquires power data through software readings, thereby reducing system manufacturing costs, power consumption, and structural complexity; The power calculation logic is optimized by summing the product of component utilization rate and load factor to calculate the power loss index, thereby reducing accumulation error and improving the accuracy of power RMS measurement. The addition of a navigation status analysis and adjustment mechanism can accurately pinpoint the cause of abnormal navigation speed and adapt to different navigation scenarios through gradient power adjustment, thereby improving the system's practicality and energy-saving effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of a rotary sail effective power calculation system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a planning in a rotary sail effective power calculation system according to an embodiment of the present invention; Figure 3 This is a second schematic diagram of a rotary sail effective power calculation system according to an embodiment of the present invention; Figure 4 This is an example of the representation of output data in a rotary sail effective power calculation system according to an embodiment of the present invention. Detailed Implementation

[0020] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] According to an embodiment of the present invention, an effective power calculation system for a rotary sail is provided. Example 1:

[0022] like Figure 1-4 As shown, the effective power calculation system for a rotary sail according to an embodiment of the present invention includes a wind turbine unit, a power unit, an energy storage unit, a data acquisition unit, a controller, and a conductive path; The wind-powered unit includes several rotating cylinders installed at corresponding positions on the ship to assist in the propulsion of the ship by means of wind power; The power unit includes an electric motor for driving the rotation of each rotary drum and an engine for driving the ship's navigation; The energy storage unit is used to store the electrical energy that drives the power unit. The data acquisition unit consists of sensors and a power source that collects navigation information from the ship. The power supply is configured to output electrical power for delivery to one or more power nodes, and one or more power monitors are configured to identify power overload conditions based on monitoring the electrical power output by the power supply. Based on the received indication of power overload, the controller transmits instructions to one or more sub-controllers, which in turn cause each sub-controller to change the operating state of the corresponding power node. Electrical power output from the power source is transmitted along the conductive path at least to one or more power nodes, and commands are transmitted along the conductive path to one or more sub-controllers.

[0023] By utilizing the controller and conductive paths, it is not necessary to telemetry individual hardware circuits by obtaining real-time power data for each component. Instead, power data can be obtained solely through software readings. This not only saves on the manufacturing cost of the rotary sail effective power calculation system but also reduces its power consumption and complexity. By addressing the error problem of cumulative calculation, it not only improves the accuracy of the measured effective power value but also simplifies the calculation process.

[0024] Three to six carbon fiber rotating cylinders are evenly installed on a support in the middle of the ship's deck. The axis of the rotating cylinder is parallel to the ship's sailing direction. Each rotating cylinder is equipped with a servo motor. The motor output shaft is connected to the end of the rotating cylinder through a coupling to drive the rotating cylinder to rotate and generate lift.

[0025] Power unit: includes the aforementioned rotary drum drive servo motor and the ship's main engine. The engine is mechanically connected to the ship's propeller. Both the main engine and the servo motor are electrically connected to the energy storage unit via wires to receive power.

[0026] Energy storage unit: It adopts a lithium iron phosphate battery pack and is equipped with a battery management system to monitor battery voltage, current and temperature, and realize charge and discharge protection. The output of the battery pack is connected to the power module of the acquisition unit through a DC contactor. Example 2:

[0027] like Figure 1-4 As shown, the utilization values ​​of one or more components in the effective power calculation system for a rotary sail are obtained; The utilization value for one or more components is multiplied by the load factor of one or more components to calculate the individual power loss of each of the one or more components.

[0028] The power loss index of the rotary sail effective power calculation system is calculated by summing the individual power losses of one or more components.

[0029] The activities of the wind turbine unit are evaluated, including the number of program instances executed by the controller and the load caused by the executed program instances.

[0030] After the system is powered on, the controller automatically executes the initialization program: Read the preset parameters of each component, including the load factor of servo motor, controller, sensor, etc. (e.g., servo motor load factor 0.8, controller load factor 0.3), the qualified sailing speed threshold of the ship (12-18 knots), the qualified angle range between the ship's sailing direction and the wind direction (30°-150°), and the power overload threshold. Detect the communication status of each unit (sensor and controller, main controller and sub-controller), and if the communication is abnormal, an alarm will be triggered through the ship's bridge display screen; The BMS of the energy storage unit starts a self-test. After confirming that the battery status is normal, it closes the DC contactor to supply power to the power module. Example 3:

[0031] like Figure 1-4 As shown, the conductive path includes one or more conductors, electrical power is transmitted to one or more power nodes along at least one or more conductors, and commands are transmitted to one or more sub-controllers along one or more conductors.

[0032] Based on multiple power nodes and multiple sub-controllers, a power metric configured to calculate the system's power consumption prediction is used. Based on the predicted power consumption and using a power consumption prediction configured for uninterruptible power supply autonomy prediction as input, the autonomy of one or more uninterruptible power supplies of the wind turbine unit is predicted as a power metric.

[0033] The prediction of the controller's redundancy level includes receiving data about the wind turbine unit from the power manager program, which is configured to manage the power requirements of the computing system.

[0034] The analysis unit is used to determine the cause of the failure of the ship's sailing speed based on the wind direction detected by the acquisition unit, or to re-determine the rotational speed of each rotary drum based on the wind speed if the sailing speed is initially determined to be unqualified.

[0035] The sensor module collects wind speed, wind direction, and actual ship speed data in real time and transmits them to the controller via RS485 bus; The power monitor collects the voltage and current data of the power supply output in real time, calculates the instantaneous power of each power node, and transmits it to the controller; the controller obtains the system components through software readings. Example 4:

[0036] like Figure 1-4 As shown, the controller is also used to set several power adjustment methods for engine power based on the actual sailing speed of the ship, provided that the angle between the ship's sailing direction and the wind direction is qualified. Each power adjustment method has a different adjustment range for engine power.

[0037] Obtain utilization values ​​for one or more components in the wind turbine unit; The utilization rate value of one or more components is multiplied by the load factor of one or more components to calculate the individual power loss of each of the one or more components; and the individual power losses of one or more components are summed to calculate the power loss index of the rotary sail effective power calculation system.

[0038] The power monitor compares the collected instantaneous power with the preset overload threshold in real time. When the instantaneous power of a power node exceeds the threshold for 3 consecutive seconds, it is determined to be a power overload and an overload indication signal is sent to the controller. After receiving an overload indication, the controller identifies the corresponding power node (such as an overloaded rotary drum motor drive module) and transmits an adjustment command to the sub-controller corresponding to that node. The sub-controller executes instructions to reduce the power consumption of the power node by decreasing the speed of the rotary drum motor (reducing the drive current) until the instantaneous power is lower than the threshold. After the overload is released, the sub-controller sends a reset signal back to the main controller.

[0039] In summary, by utilizing the above-described technical solution of this invention, and by employing a controller and conductive paths, it is not necessary to obtain real-time power data of individual components for telemetry of separate hardware circuits. Instead, power data can be obtained solely through software readings. This not only saves on the manufacturing cost of the rotary sail effective power calculation system but also reduces its power consumption and complexity. By addressing the error problem of cumulative calculation, it not only improves the accuracy of the measured effective power value but also simplifies the calculation process.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A system for calculating the effective power of a rotary sail, characterized in that, The system comprises a wind unit, a power unit, an energy storage unit, a collection unit, an analysis unit, a controller and a conductive path; The wind unit comprises a plurality of rotating cylinders arranged at corresponding positions of the ship to assist the ship in sailing by wind power; The power unit comprises a motor for driving the rotation of each rotating cylinder and an engine for driving the ship to sail; The energy storage unit is configured to store electric energy for driving the operation of the power unit; The collection unit comprises a sensor for collecting sailing information of the ship and a power supply configured to output electric power and transmit the electric power to one or more power nodes; The system further comprises one or more power monitors configured to identify a power overload condition by monitoring the electric power output by the power supply; The controller is configured to transmit instructions to one or more sub-controllers based on the received power overload condition indication, the instructions causing each sub-controller to change the operating state of the corresponding power node; The conductive path comprises one or more conductors along which the electric power output by the power supply is transmitted to the power nodes, and the instructions are transmitted to the sub-controllers along the conductors; The analysis unit is configured to determine the cause based on the wind direction detected by the collection unit when the sailing speed of the ship obtained by the collection unit is unqualified, or to re-determine the rotation speed of each rotating cylinder based on the wind speed when the sailing speed is preliminarily determined to be unqualified.

2. The effective power calculation system of a spin-cylinder wind sail according to claim 1, wherein, The system further comprises the following power loss calculation steps: Obtain the utilization value of one or more components in the system; Multiply the utilization value of each component by the corresponding component's load factor to calculate the individual power loss of each component.

3. A power calculation system for a spin-tube wind sail according to claim 2, wherein, Sum the individual power losses of the one or more components to obtain the power loss index of the system.

4. The effective power calculation system of a spin-cylinder wind sail according to claim 3, wherein, The controller is further configured to evaluate the activity of the wind unit, the activity including the number of program instances executed by the controller and the load caused by the program instances.

5. A power calculation system for a spin-tube wind sail according to claim 4, wherein, The system further comprises a power consumption prediction mechanism: based on a plurality of power nodes and a plurality of sub-controllers, a power consumption prediction power metric configured in the computing system is used.

6. A power calculation system for a spin-tube wind sail according to claim 5, wherein, Based on the predicted power consumption and by using the power consumption prediction configured for uninterruptible power supply autonomy prediction as input, the autonomy of one or more uninterruptible power supplies of the wind unit is predicted as a power metric.

7. A power calculation system for a spin-tube wind sail according to claim 6, wherein, The prediction of the redundancy level of the controller includes receiving data about the wind unit from a power manager program configured to manage the power requirements of the computing system.

8. A power calculation system for a spin-tube wind sail according to claim 7, wherein, The analysis unit is configured to determine the cause based on the wind direction detected by the collection unit when the sailing speed of the ship obtained by the collection unit is unqualified, or to re-determine the rotation speed of each rotating cylinder based on the wind speed when the sailing speed is preliminarily determined to be unqualified.

9. A power calculation system for a spin-tube wind sail according to claim 8, wherein, The controller is further configured to provide a plurality of power adjustment modes for the engine power based on the actual sailing speed of the ship when the included angle between the sailing direction of the ship and the wind direction is qualified, and each power adjustment mode has a different adjustment range for the engine power.

10. The effective power calculation system of a spin-cylinder wind sail according to claim 9, wherein, Obtain the utilization value of one or more components in the wind unit; multiplying the utilization values of one or more components by a load factor of the one or more components, respectively, to calculate an individual power loss of each of the one or more components; and summing the individual power losses of the one or more components to calculate the power loss indicator of the spin-tube kite effective power calculation system.

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