CN113306727A - Power distribution method, device and system - Google Patents
Power distribution method, device and system Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D31/00—Power plant control; Arrangement thereof
Abstract
The present application relates to the field of energy management technologies, and in particular, to a power distribution method, device, and system. Receiving the power supply requirement of the current load channel; the power supply requirement of the current load channel is acquired by a flight control device of the unmanned aerial vehicle according to the running state of the unmanned aerial vehicle; generating a demand control instruction according to the power supply demand; acquiring the actual power of the current load channel, and acquiring the actual power deviation according to the actual power and the demand control instruction; and allocating the output power of the current load channel according to the actual power deviation. By acquiring the power supply requirement of the current load and performing power allocation on the load channel based on the actual power deviation, the time from the change of the power supply requirement to the completion of the power allocation is shortened, and the power allocation is more flexible.
Description
Technical Field
The present application relates to the field of energy management technologies, and in particular, to a power distribution method, device, and system.
Background
At present, after the power supply demand of the load of the unmanned aerial vehicle changes due to the change of the operation state of the unmanned aerial vehicle, the common practice is to redistribute the power based on the power supply demand of the load. Although the accuracy of the power distribution result can be guaranteed, the time consumed from the transmission of the power supply demand of the load of the unmanned aerial vehicle to the completion of the power allocation of the unmanned aerial vehicle is long under the condition of large load change, and the flexible allocation of the power cannot be realized.
Disclosure of Invention
An embodiment of the present invention provides a power allocation method, a device and a system thereof to solve the above technical problem.
In order to achieve the above purpose, the present application provides the following technical solutions:
in a first aspect, an embodiment of the present application provides a power allocation method, where the method includes:
receiving the power supply requirement of the current load channel; the power supply requirement of the current load channel is acquired by a flight control device of the unmanned aerial vehicle according to the running state of the unmanned aerial vehicle;
generating a demand control instruction according to the power supply demand;
acquiring the actual power of the current load channel, and acquiring the actual power deviation according to the actual power and the demand control instruction;
and allocating the output power of the current load channel according to the actual power deviation.
In the method, the power supply demand acquired by the flight control device of the unmanned aerial vehicle according to the running state of the unmanned aerial vehicle is received, the actual power deviation is acquired according to the power supply demand and the actual power of the current load channel, and the output power of the current load channel is allocated according to the actual power deviation, so that the output power of the unmanned aerial vehicle is allocated more timely, and the allocation process is more flexible.
Optionally, after receiving the power supply requirement of the current load channel, the method further includes: and if the sum of the power supply inputs of the load channels is smaller than the sum of the power supply requirements of the current load channel, starting a power compensation device to compensate the power supply inputs.
In the method, the power supply input is compensated through the power compensation device when the power supply input cannot meet the power supply requirement, so that the power distribution method has better overall redundancy.
Optionally, the allocating the output power of the load channel according to the actual power deviation includes: and adjusting the deviation power of the load channel with the actual power deviation as a positive number to the load channel with the actual power deviation as a negative number.
In the method, the deviation power of the load channel with the actual power deviation being positive is allocated to the load channel with the actual power deviation being negative, so that the power allocation of the unmanned aerial vehicle is more flexible when the load changes.
Optionally, the actual power of the load is obtained according to a power sensor of the load channel loop.
In the method, the actual output power of each load channel is obtained by arranging a power sensor in the load channel loop.
In a second aspect, an embodiment of the present application provides a power distribution apparatus, including:
a power distribution control module for receiving a power supply demand of a current load path; generating a demand control instruction according to the power supply demand;
the power distribution module is electrically connected with the power distribution control module and is used for acquiring actual power deviation according to the actual power of the current load channel and the demand control instruction; and allocating the output power of the current load channel according to the actual power deviation.
Optionally, the power distribution module specifically includes: the deviation obtaining device is used for obtaining actual power deviation according to the actual power of the load and the demand control instruction; the field effect transistor is used for allocating the output power of the current load channel according to the actual power deviation; and the output acquisition device is used for acquiring the actual power of the current load channel.
In a third aspect, the present application provides a power distribution system, comprising:
a flight control device and the power distribution device of the second aspect, wherein the flight control device and the power distribution device communicate via an onboard bus;
and the flight control device is used for acquiring the power supply requirement of the current load channel according to the running state of the unmanned aerial vehicle.
Optionally, after the operating state of the unmanned aerial vehicle changes, the flight control device obtains the power supply requirement of the current load channel again according to the operating state of the unmanned aerial vehicle.
Optionally, the flight control device obtains the power supply requirement of the current load channel according to the operating state of the unmanned aerial vehicle, and specifically includes: acquiring a preset power supply demand corresponding relation of a load channel corresponding to each operation state of the unmanned aerial vehicle; and the flight control device acquires the power supply requirement of the current load channel according to the corresponding relation of the running state of the unmanned aerial vehicle and the preset power supply requirement.
Optionally, the system further includes: the power compensation device is electrically connected with the load channel, and if the power supply input is smaller than the sum of the power supply requirements of the current load channel, the power compensation device is started to compensate the power supply input; the power compensation device is also electrically connected with the flight control device and used for receiving a compensation signal of which the power supply input is smaller than the sum of the power supply requirements of the current load channel and starting the power compensation device according to the compensation signal.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic flowchart of a power allocation method according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a power distribution apparatus according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a power distribution system according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The terms "first," "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily being construed as indicating or implying any actual such relationship or order between such entities or actions.
In view of the defects in the prior art, embodiments of the present application provide a power allocation method, which is used to shorten the time from when a load is changed to when power allocation is completed, and implement flexible power allocation.
Referring to fig. 1, fig. 1 is a schematic flow chart of a power allocation method according to an embodiment of the present application, where the power allocation method includes the following steps:
And 102, generating a demand control instruction according to the power supply demand.
And 103, acquiring the actual power of the current load channel, and acquiring the actual power deviation according to the actual power and the demand control instruction.
And step 104, allocating the output power of the current load channel according to the actual power deviation.
In step 101, the power supply requirement of the current load channel refers to the power supply requirement of the load channel currently running, and the power supply requirements of the load channels of the unmanned aerial vehicle in different running states may all be different, for example, in a takeoff state, the energy consumption is large, the power supply requirement of the load channel is large, and in a plane flight state, the energy consumption is small, and the power supply requirement of the load channel is also correspondingly reduced. After the operating state of the unmanned aerial vehicle is determined, the flight control device of the unmanned aerial vehicle can determine a load channel with a power supply demand and the power supply demand of the load channel according to the operating state.
In step 102, the demand control command refers to a power threshold identification signal corresponding to the power supply demand, and the power threshold identification signal is used to obtain and define the power demand of the load channel.
In step 103, the difference between the actual power of the load channel and the power of the demand control command, i.e. the power threshold identification signal, is taken as the actual power deviation.
In step 104, the output power of the current load channel is adjusted according to the actual power deviation, so that the output power of the current load channel matches with the power supply requirement of the load channel.
Therefore, according to the power distribution method provided by the embodiment of the application, the power supply requirement acquired by the flight control device of the unmanned aerial vehicle according to the running state of the unmanned aerial vehicle is received, the actual power deviation is acquired according to the power supply requirement and the actual power of the current load channel, and the output power of the current load channel is distributed through the actual power deviation, so that the time consumed from the load change to the completion of the power distribution is shortened, and the flexible power distribution is realized.
In some optional embodiments, after the receiving the power supply requirement of the current load channel, the method further comprises: and if the sum of the power supply inputs of the load channels is smaller than the sum of the power supply requirements of the current load channel, starting a power compensation device to compensate the power supply inputs.
The sum of the power supply inputs of the load channels refers to the total power supply input of the unmanned aerial vehicle power distribution device; the power compensation device can be a wind-solar complementary power compensator which comprises a wind driven generator and a solar power generation panel, when the sum of the power supply input of the load channel is larger than the sum of the power supply requirements of the current load channel, the power compensation device stores electric energy through solar power generation and wind power generation, when the sum of the power supply input of the load channel is smaller than the sum of the power supply requirements of the current load channel, the power compensation device compensates the power supply input, and meanwhile, solar power generation and wind power generation are mutually supplemented, so that the wind-solar complementary power compensator is clean, efficient and high in adaptability.
In some optional embodiments, the adjusting the output power of the load channel according to the actual power deviation includes: and adjusting the deviation power of the load channel with the actual power deviation as a positive number to the load channel with the actual power deviation as a negative number.
The fact that the actual power deviation is a positive number means that the actual power of the load channel is larger than the required power of the load channel; the actual power deviation is a negative number, which means that the actual power of the load channel is smaller than the required power of the load channel; the situation that the actual power deviation is positive number has surplus power, and the surplus power is transferred to a load channel with power shortage, so that the power distribution flexibility is improved, and meanwhile, the power distribution time is shortened, and after the unmanned aerial vehicle enters a new operation state, the power balance of the new state is realized more quickly. For example, if the number of load channels whose actual power deviation is positive is 1 and the number of load channels whose actual power deviation is negative is also 1, the excess power of the load channels whose actual power deviation is positive may be transferred to the number of load channels whose actual power deviation is negative; if the number of the load channels with the actual power deviation of positive number is 2 and the number of the load channels with the actual power deviation of negative number is 3, the corresponding relation of the load channels for transferring power can be determined according to the adjacent distance of the load channels, and the redundant power of the load channels with the actual power deviation of positive number is preferentially transferred to the adjacent load channels with the actual power deviation of negative number; the load channels may also be numbered in advance, and the correspondence of the load channels to which power is transferred may be determined in advance according to the numbers of the load channels. The redundant power of a load channel with positive actual power deviation can be transferred to only one load channel with negative actual power deviation or a plurality of load channels with negative actual power deviation; one load channel with negative actual power deviation may receive the excess power of one load channel with positive actual power deviation, or may simultaneously receive the excess power of a plurality of load channels with positive actual power deviation.
In some alternative embodiments, the actual power of the load is obtained from a power sensor of the load path loop.
The power sensor can be arranged in each load channel loop, and the actual power of the load channel is obtained through the power sensor, so that power allocation is performed according to the actual power and the power supply requirement of the load channel.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a power distribution apparatus according to an embodiment of the present disclosure, the power distribution apparatus is configured to shorten a time period from a start of a load to a completion of power distribution, and implement flexible power allocation, and includes:
a power distribution control module 201 for receiving the power supply requirement of the current load channel; generating a demand control instruction according to the power supply demand;
at least one power distribution module 202, electrically connected to the power distribution control module, for obtaining an actual power deviation according to the actual power of the current load channel and the demand control instruction; and allocating the output power of the current load channel according to the actual power deviation.
The power distribution device provided by the invention is matched with at least one power distribution module through the power distribution control module, and the output power of the current load channel is allocated according to the actual power deviation, so that the time consumed from load change to completion of power distribution is shortened, and the flexible allocation of power is realized.
The demand control instruction refers to a power threshold identification signal corresponding to the power supply demand, and the power demand of a load channel can be obtained and limited through the power threshold identification signal; the actual power deviation refers to a power difference obtained by subtracting the power of the power threshold identification signal from the actual power of the load; the power distribution control module may be a solid state power controller control component, and the power distribution module may be a solid state power controller; the power distribution control module has multiple communication modes such as RS422 communication, CAN communication and RS485 communication and is used for receiving a power distribution instruction transmitted by an upper computer or other devices, the power distribution instruction comprises the power supply requirement of the current load channel, and the power distribution control module controls at least one power distribution module to allocate the output power of the current load channel according to the power supply requirement after receiving the power supply requirement of the current load channel. The number of the power distribution modules can be one, two or five, and the number of the power distribution modules participating in power distribution is determined according to the number of load channels with power supply requirements corresponding to the specific operation state of the unmanned aerial vehicle.
In some optional embodiments, the power distribution control module further comprises a circuit breaker module.
The circuit breaker module comprises a contact system, an arc extinguishing system, an operating mechanism, a locking mechanism, a shell and the like, and is used for cutting off and connecting a load circuit, cutting off a fault circuit under the condition of an accident and preventing the accident from being expanded continuously.
In some optional embodiments, the power distribution module 202 specifically includes: the deviation obtaining device is used for obtaining actual power deviation according to the actual power of the load and the demand control instruction; the field effect transistor is used for allocating the output power of the current load channel according to the actual power deviation; and the output acquisition device is used for acquiring the actual power of the current load channel.
The deviation acquisition module can be realized through a deviation calculation circuit, the field effect tube can be a junction field effect tube or an insulated gate field effect tube, and the output acquisition device can be realized through a current acquisition land and a voltage acquisition circuit. The processor in the power distribution module can select STM32F334, the STM32F334 is a microcontroller with a mainstream mixed signal of digital signal processing and floating point operation processing, the power distribution module has multiple functions, such as load on-off, overcurrent protection, short circuit instantaneous trip, input voltage monitoring, load voltage and current monitoring and the like, and when power output is abnormal, the power distribution module can timely control power distribution output so as to protect the safety of a power load; in addition, the power distribution module also has self-checking functions, such as current detection amplifier testing, instantaneous trip comparator testing, field effect transistor gate drive voltage testing, off-state leakage current testing, field effect transistor failure testing and the like. The output collection device may configure power output channels of multiple power quotas, for example, 5.5A, 15A, 50A, and the like, and combining the power output channels of multiple power quotas may realize more combined quota outputs, for example, 2 × 5.5A, 2 × 15+5.5A, 3 × 5.5+15+50A, and the like.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a power distribution system according to an embodiment of the present application, including: flight control 301 and power distribution 302. Wherein, the flight control device 301 and the power distribution device 302 communicate through an airborne bus; the flight control device 301 is configured to obtain a power supply requirement of the current load channel according to an operation state of the unmanned aerial vehicle.
The power distribution system provided by the invention is matched with the power distribution device through the flight control device, the power supply requirement of the current load channel is acquired through the flight control device according to the running state of the unmanned aerial vehicle, and the output power of the current load channel is allocated according to the actual power deviation, so that the time consumed from the load change to the completion of power distribution is shortened, and the flexible allocation of power is realized.
In some optional embodiments, after the operation state of the drone changes, the flight control device 301 obtains the power supply requirement of the current load channel again according to the operation state of the drone.
After the operation state of the unmanned aerial vehicle changes, the power supply requirement of a load channel of the unmanned aerial vehicle can also change along with the change of the operation state of the unmanned aerial vehicle; therefore, the flight control device of the unmanned aerial vehicle is required to acquire the running state of the unmanned aerial vehicle in real time, and after the running state of the unmanned aerial vehicle changes, the power supply requirement of the current load channel is acquired again according to the running state of the unmanned aerial vehicle, so that the real-time performance of the power supply requirement of the load channel is ensured.
In some optional embodiments, the acquiring, by the flight control device 301, the power supply requirement of the current load channel according to the operation state of the unmanned aerial vehicle specifically includes: acquiring a preset power supply demand corresponding relation of a load channel corresponding to each operation state of the unmanned aerial vehicle; the flight control device 301 obtains the power supply requirement of the current load channel according to the operation state of the unmanned aerial vehicle and the preset power supply requirement corresponding relation.
The preset power supply requirement corresponding relationship can be obtained according to each operation state of the unmanned aerial vehicle and the power supply requirement of the load channel corresponding to each operation state, for example, a first power supply requirement of the load channel corresponding to a first operation state, and a second power supply requirement and a third power supply requirement of the load channel corresponding to a second operation state and a third operation state respectively; can directly predetermine the power supply demand corresponding relation and then acquire the power supply demand of current load passageway through transferring according to unmanned aerial vehicle's running state.
In some optional embodiments, the system further comprises: the power compensation device 303, the power compensation device 303 is electrically connected with the load channel, and if the power supply input is smaller than the sum of the power supply requirements of the current load channel, the power compensation device 303 is started to compensate the power supply input; the power compensation device 303 is further electrically connected to the flight control device 301, and is configured to receive a compensation signal that the power supply input is smaller than the sum of the power supply requirements of the current load channel, and activate the power compensation device 303 according to the compensation signal.
In the embodiments provided in the present application, it should be understood that the disclosed method and system can be implemented in other ways. The above-described system embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and there may be other divisions in actual implementation, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A method of power allocation, the method comprising:
receiving the power supply requirement of the current load channel; the power supply requirement of the current load channel is acquired by a flight control device of the unmanned aerial vehicle according to the running state of the unmanned aerial vehicle;
generating a demand control instruction according to the power supply demand;
acquiring the actual power of the current load channel, and acquiring the actual power deviation according to the actual power and the demand control instruction;
and allocating the output power of the current load channel according to the actual power deviation.
2. The method of claim 1, wherein after said receiving a power demand of a current load channel, the method further comprises:
and if the sum of the power supply inputs of the load channels is smaller than the sum of the power supply requirements of the current load channel, starting a power compensation device to compensate the power supply inputs.
3. The method of claim 1, wherein said adjusting the output power of a load channel according to the actual power deviation comprises:
and adjusting the deviation power of the load channel with the actual power deviation as a positive number to the load channel with the actual power deviation as a negative number.
4. The method of claim 1, wherein the actual power of the load is obtained from a power sensor of a load path loop.
5. A power distribution apparatus, the apparatus comprising:
a power distribution control module for receiving a power supply demand of a current load path; generating a demand control instruction according to the power supply demand;
the power distribution module is electrically connected with the power distribution control module and is used for acquiring actual power deviation according to the actual power of the current load channel and the demand control instruction; and allocating the output power of the current load channel according to the actual power deviation.
6. The device according to claim 5, characterized in that the power distribution module comprises in particular:
the deviation obtaining device is used for obtaining actual power deviation according to the actual power of the load and the demand control instruction;
the field effect transistor is used for allocating the output power of the current load channel according to the actual power deviation;
and the output acquisition device is used for acquiring the actual power of the current load channel.
7. A power distribution system, the system comprising:
a flight control device and a power distribution device according to any of claims 5-6, the flight control device and the power distribution device communicating via an onboard bus;
and the flight control device is used for acquiring the power supply requirement of the current load channel according to the running state of the unmanned aerial vehicle.
8. The system of claim 7, wherein after the operating state of the drone changes, the flight control device obtains the power supply requirement of the current load lane again according to the operating state of the drone.
9. The system according to claim 7, wherein the flight control device obtains the power supply requirement of the current load channel according to the operation state of the unmanned aerial vehicle, and specifically includes:
acquiring a preset power supply demand corresponding relation of a load channel corresponding to each operation state of the unmanned aerial vehicle;
and the flight control device acquires the power supply requirement of the current load channel according to the corresponding relation of the running state of the unmanned aerial vehicle and the preset power supply requirement.
10. The system of claim 7, further comprising:
the power compensation device is electrically connected with the load channel, and if the power supply input is smaller than the sum of the power supply requirements of the current load channel, the power compensation device is started to compensate the power supply input;
the power compensation device is also electrically connected with the flight control device and used for receiving a compensation signal of which the power supply input is smaller than the sum of the power supply requirements of the current load channel and starting the power compensation device according to the compensation signal.
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| CN112636459A (en) * | 2020-10-15 | 2021-04-09 | 彩虹无人机科技有限公司 | Unmanned aerial vehicle intelligence power supply and distribution system |
| CN112363560A (en) * | 2020-10-20 | 2021-02-12 | 国网江西省电力有限公司电力科学研究院 | Control and distribution method and device of photovoltaic power generation system |
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