CN112461420A - Method and device for detecting energy conversion efficiency of rotary generator and controller - Google Patents
Method and device for detecting energy conversion efficiency of rotary generator and controller Download PDFInfo
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- CN112461420A CN112461420A CN202011320562.6A CN202011320562A CN112461420A CN 112461420 A CN112461420 A CN 112461420A CN 202011320562 A CN202011320562 A CN 202011320562A CN 112461420 A CN112461420 A CN 112461420A
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- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/26—Devices for measuring efficiency, i.e. the ratio of power output to power input
Abstract
The invention discloses a method, a device and a controller for detecting energy conversion efficiency of a rotary generator. The method for detecting the energy conversion efficiency of the rotary generator comprises the following steps: providing input torque to the rotary generator through a preset motor to enable the rotary generator to work, measuring output current of the rotary generator driven by the preset motor at a preset rotating speed, and calculating to obtain output power according to the measured output current; measuring the counter torque of a rotor of the rotary generator driven by a preset rotating speed, calculating to obtain an average counter torque, and calculating to obtain input power according to the calculated average counter torque; and calculating the energy conversion efficiency of the rotary generator driven by the preset rotating speed according to the calculated output power and input power. The method for detecting the energy conversion efficiency of the rotary generator can detect the input power and the energy conversion efficiency of the rotary generator.
Description
Technical Field
The invention relates to a method, a device and a controller for detecting energy conversion efficiency of a rotary generator.
Background
The energy source is the pillar of human society and is the power for promoting the forward development of the world. The development of human society has always been accompanied by the development of energy utilization means. With the advent of the information age of the internet of things, the level of electronic technology is continuously improved, microelectronic devices and small mobile devices are more and more portable, intelligent and integrated, and it becomes very important to solve the problem of energy supply of these electronic products.
The traditional battery is still the main power supply mode of these novel electronic devices, and due to the inherent properties of battery life and pollution, the traditional battery power supply mode faces a great challenge, and in combination with the characteristics of distributed and shared in the networking era, the most ideal power supply scheme is to enable the electronic product to perform self-power supply, that is, the electronic product can obtain energy from the surrounding environment and convert the energy into electric energy to meet the power consumption requirement of the electronic product.
The friction nano generator is used as a new energy collection technology, and has comparability and symmetry with the electromagnetic generator in the aspects of working mechanism, control equation and output characteristic, which shows that the friction nano generator and the electromagnetic generator have the same important function in the aspect of collecting energy.
Since 2012 friction nanometer generators appeared, they have shown great application prospects in the aspect of collecting environmental energy, and are particularly suitable for collecting environmental mechanical energy with low frequency and small amplitude, such as energy generated by human body movement, energy generated by raindrop falling, energy generated by automobile vibration, and the like.
The energy conversion efficiency is an important index for measuring the electrical performance of the friction nano generator, however, no professional method and equipment are available for testing the energy conversion efficiency of the friction nano generator, and the method is an industry blank which needs to be filled.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a controller for detecting energy conversion efficiency of a rotary generator, and aims to solve the problem that no professional test method is available for the energy conversion efficiency of a friction nano generator.
The embodiment of the invention provides a method for detecting energy conversion efficiency of a rotary generator, which comprises the following steps:
providing input torque to the rotary generator through a preset motor to enable the rotary generator to work, measuring output current of the rotary generator driven by the preset motor at a preset rotating speed, and calculating output power of the rotary generator driven by the preset rotating speed according to the measured output current of the rotary generator driven by the preset rotating speed;
measuring the counter torque of a rotor of the rotary generator driven by a preset rotating speed, calculating to obtain an average counter torque, and calculating to obtain the input power of the rotary generator driven by the preset rotating speed according to the calculated average counter torque;
and calculating the energy conversion efficiency of the rotary generator driven by the preset rotating speed according to the calculated output power and input power of the rotary generator driven by the preset rotating speed.
According to an aspect of the embodiment of the present invention, further comprising:
and changing the preset rotating speed to obtain the corresponding relation between the energy conversion efficiency and the input power of the rotary generator.
According to an aspect of an embodiment of the invention, calculating the average counter moment comprises:
and recording the measured counter torque for multiple times within preset time, and calculating an average value according to the multiple records to obtain the average counter torque driven by the preset rotating speed.
According to an aspect of the embodiment of the present invention, calculating the output power of the rotary generator driven by the preset rotation speed includes:
the output power is the product of the integral of the square of the output current and the external resistance.
According to an aspect of the embodiment of the present invention, calculating the input power of the rotary generator driven by the preset rotation speed includes:
the input power is the product of the average counter torque and the preset rotating speed.
According to one aspect of the embodiment of the invention, the output current of the rotary generator driven by the preset rotating speed is measured by the electrometer.
According to one aspect of the embodiment of the invention, the counter torque of the rotor of the rotary generator driven by the preset rotating speed is measured through the torque sensor.
The embodiment of the invention provides a device for detecting the energy conversion efficiency of a rotary generator, which comprises:
the output power calculation unit is used for providing input torque for the rotary generator through the preset motor, enabling the rotary generator to work, measuring output current of the rotary generator under the driving of the preset motor at a preset rotating speed, and calculating output power of the rotary generator under the driving of the preset rotating speed according to the measured output current of the rotary generator under the driving of the preset rotating speed;
the input power calculation unit is used for measuring the counter torque of the rotor of the rotary generator driven by the preset rotating speed, calculating to obtain an average counter torque, and calculating to obtain the input power of the rotary generator driven by the preset rotating speed according to the calculated average counter torque;
and the energy conversion control unit is used for calculating the energy conversion efficiency of the rotary generator driven by the preset rotating speed according to the calculated output power and input power of the rotary generator driven by the preset rotating speed.
An embodiment of the present invention provides a controller, including: a memory, at least one processor, and a computer program; wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of detecting energy conversion efficiency of a rotary generator as described above.
Embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the method for detecting energy conversion efficiency of a rotary generator as described above.
The method for detecting the energy conversion efficiency of the rotary generator provided by the embodiment of the invention adopts the preset motor to provide input energy for the rotary generator, under the action of the input torque provided by the preset motor, the rotary generator can rotate at a constant speed to work and output an electric signal, on one hand, measuring the output current, calculating the output power of the rotary generator according to the output current, measuring the counter torque of the rotor of the rotary generator driven by the preset rotating speed, calculating the average counter torque, calculating the input power of the generator according to the average counter torque, therefore, the energy conversion efficiency of the rotary generator is obtained, the input power and the energy conversion efficiency of the rotary generator such as a rotary friction nano generator or a rotary electromagnetic generator can be detected, and the problem that no professional test method is available for the energy conversion efficiency of the friction nano generator is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method of detecting energy conversion efficiency of a rotary generator according to an embodiment of the present invention;
FIGS. 2a and 2b are graphs showing the relationship between the average counter torque and the preset rotation speed obtained by the method for detecting the energy conversion efficiency of the rotary generator according to the embodiment of the invention;
FIGS. 3a and 3b are graphs illustrating the relationship between the maximum output power and the preset rotation speed obtained by the method for detecting the energy conversion efficiency of the rotary generator according to the embodiment of the invention;
FIGS. 4a and 4b are graphs illustrating the relationship between the input power and the preset rotation speed obtained by the method for detecting the energy conversion efficiency of the rotary generator according to the embodiment of the invention;
FIG. 5 is a graph of maximum output power versus input power using a method of detecting energy conversion efficiency of a rotary generator according to an embodiment of the present invention;
FIG. 6 is a graph of energy conversion efficiency versus input power using a method of detecting energy conversion efficiency of a rotary generator according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an apparatus for detecting energy conversion efficiency of a rotary generator according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a controller according to an embodiment of the present invention;
fig. 9a and 9b are schematic diagrams of a reference structure related to a mechanical component architecture according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the described embodiments.
In the description of the present invention, it is to be noted that, unless otherwise specified, the terms "first" and "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; "plurality" means two or more; the terms "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, a method for detecting energy conversion efficiency of a rotary generator according to an embodiment of the present invention includes the following steps:
providing input torque to the rotary generator through a preset motor to enable the rotary generator to work, measuring output current of the rotary generator driven by the preset motor at a preset rotating speed, and calculating output power of the rotary generator driven by the preset rotating speed according to the measured output current of the rotary generator driven by the preset rotating speed;
measuring the counter torque of a rotor of the rotary generator driven by a preset rotating speed, calculating to obtain an average counter torque, and calculating to obtain the input power of the rotary generator driven by the preset rotating speed according to the calculated average counter torque;
and calculating the energy conversion efficiency of the rotary generator driven by the preset rotating speed according to the calculated output power and input power of the rotary generator driven by the preset rotating speed.
In this embodiment, a preset motor is adopted to provide input energy for the rotary generator, and under the action of input torque provided by the preset motor, the rotary generator can rotate at a constant speed to work and output an electric signal.
As an alternative embodiment, the average counter moment is calculated, comprising: and recording the measured counter torque for multiple times within preset time, and calculating an average value according to the multiple records to obtain the average counter torque driven by the preset rotating speed.
In specific implementation, under the condition that the preset rotating speed is not changed, 5 times of records are carried out on the measured counter moment within the preset time, such as within 10 seconds, and then the average value of the counter moment is calculated according to the 5 times of records, so that the average counter moment driven by the preset rotating speed is obtained.
For the rotary friction nano generator, under the driving of a preset motor, a rotor of the rotary friction nano generator is under the action of electrostatic counter torque caused by electrostatic force. The average static counter moment is the average value of the static counter moments measured in a preset time.
For the rotary electromagnetic generator, under the driving of a preset motor, the rotor of the rotary electromagnetic generator is subjected to electromagnetic counter torque caused by ampere force. The average electromagnetic counter moment is the average value of the electromagnetic counter moments measured in a preset time.
The electrostatic counter moment and the electromagnetic counter moment are collectively referred to as counter moments in the above steps, and the average electrostatic counter moment and the average electromagnetic counter moment are collectively referred to as average counter moments. In other words, in the above steps, the counter torque is different correspondingly according to the type of the tested rotary generator, specifically, the rotary friction nano generator is corresponding to the electrostatic counter torque, and the rotary electromagnetic generator is corresponding to the electromagnetic counter torque.
With the detection method of this embodiment, experiments yielded:
the relation between the average static counter moment of the rotary friction nano generator and the preset rotating speed is shown in figure 2a, the rotating speed of the abscissa in the figure is the preset rotating speed in the step, and the average static counter moment is almost maintained to be near 2.2 mN.m along with the increase of the rotating speed from 10r/min to 200 r/min;
the relation between the average electromagnetic counter moment of the rotary electromagnetic generator and the preset rotating speed is shown in fig. 2b, the rotating speed of the abscissa in the figure is the preset rotating speed in the step, and the average electromagnetic counter moment is increased from 1 mN.m to 9.15 mN.m as the rotating speed is increased from 10r/min to 200 r/min.
As an alternative embodiment, calculating the output power of the rotary generator driven by the preset rotation speed includes: the output power is the product of the integral of the square of the output current and the external resistance.
In this embodiment, the maximum output power can be obtained by performing an integral calculation, which can be applied to the above steps as the output power, and the integral formula is as follows:
wherein: r is an external resistance value; i is the output current value.
With the detection method of this embodiment, experiments yielded: when the preset rotating speed changes, the maximum output power of the rotary friction nano generator also changes correspondingly, and the maximum output power changes along with the preset rotating speed. The fitted curve of the plurality of test values is shown in fig. 3a, the rotating speed of the abscissa in the figure is the preset rotating speed in the step, and the maximum output power is increased from 0.69mW to 13.16mW as the rotating speed is increased from 10r/min to 200 r/min;
similarly, when the preset rotating speed changes, the maximum output power of the rotary electromagnetic generator also changes correspondingly, and the maximum output power changes along with the preset rotating speed. The fitted curve of the plurality of test values is shown in fig. 3b, the rotation speed on the abscissa in the figure is the preset rotation speed in the above step, and the maximum output power is increased from 0.11mW to 75.05mW as the rotation speed is increased from 10r/min to 200 r/min.
As an alternative embodiment, calculating the input power of the rotary generator at a preset rotation speed includes: the input power is the product of the average counter torque and the preset rotating speed.
In a specific implementation, the following are received:
for the rotary friction nano generator, the input power is equal to the average static counter moment multiplied by the preset rotating speed;
for a rotary electromagnetic generator, the input power is the average electromagnetic counter-torque x the preset rotational speed.
With the detection method of this embodiment, experiments yielded:
the relation between the input power and the preset rotating speed of the rotary friction nano generator is shown in FIG. 4a, the rotating speed of the abscissa in the figure is the preset rotating speed in the above step, and the input power is increased from 2.32mW to 46.79mW as the rotating speed is increased from 10r/min to 200 r/min;
the relation between the input power and the preset rotating speed of the rotary electromagnetic generator is shown in FIG. 4b, the rotating speed on the abscissa in the figure is the preset rotating speed in the above step, and the input power is increased from 1.05mW to 191.61mW as the rotating speed is increased from 10r/min to 200 r/min;
as shown in fig. 5, as the input power increases, the maximum output power of both the rotary friction nano-generator and the rotary electromagnetic generator increases.
As an alternative embodiment, on the basis of the steps of the method for detecting the energy conversion efficiency of the rotary generator, the method further comprises: and changing the preset rotating speed to obtain the corresponding relation between the energy conversion efficiency and the input power of the rotary generator.
In this embodiment, the preset rotation speed of the preset motor is adjusted, the output current of the rotary generator is changed correspondingly, different output powers of the rotary generator are obtained, meanwhile, the average counter torque received by the rotary generator is also changed, different input powers are obtained, different energy conversion efficiencies are obtained, the change situation of the energy conversion efficiency along with the preset rotation speed can be obtained, the change situation of the energy conversion efficiency along with the input power can be obtained, and the corresponding relation graph of the energy conversion efficiency and the input power of the rotary generator can be further obtained.
With the detection method of this embodiment, experiments yielded:
as shown in fig. 6, as the input power is increased from 1.05mW to 18.61mW, the energy conversion efficiency of the rotary friction nano-generator remains almost unchanged, but is slightly decreased, and the energy conversion efficiency of the rotary electromagnetic generator rapidly increases and tends to be gradually saturated.
As an alternative embodiment, the output current of the rotary generator driven by the preset rotation speed is measured by an electrometer, and specifically, a Keithley 6514 electrometer can be adopted.
As an alternative embodiment, the torque sensor measures the counter torque applied to the rotor of the rotary generator driven by the preset rotation speed, and specifically, a micro-range torque sensor can be adopted.
Based on any of the above embodiments, as shown in fig. 7, an embodiment of the present invention further provides an apparatus for detecting energy conversion efficiency of a rotary generator, including:
the output power calculation unit 71 is configured to provide an input torque to the rotary generator through a preset motor, so that the rotary generator operates, measure an output current of the rotary generator driven by the preset motor at a preset rotation speed, and calculate an output power of the rotary generator driven by the preset rotation speed according to the measured output current of the rotary generator driven by the preset rotation speed;
the input power calculation unit 72 is used for measuring the counter torque of the rotor of the rotary generator driven by the preset rotating speed, calculating to obtain an average counter torque, and calculating to obtain the input power of the rotary generator driven by the preset rotating speed according to the calculated average counter torque;
and the energy conversion control unit 73 is used for calculating the energy conversion efficiency of the rotary generator driven by the preset rotating speed according to the calculated output power and input power of the rotary generator driven by the preset rotating speed.
Because the principle of solving the problems of the device is similar to the method for detecting the energy conversion efficiency of the rotary generator, the implementation of the device can refer to the implementation of the method, and repeated details are not repeated.
Based on any of the above embodiments, as shown in fig. 8, the controller according to the embodiment of the present invention includes: the system comprises a processor 81, a communication interface 82, a memory 83 and a communication bus 84, wherein the processor 81, the communication interface 82 and the memory 83 are communicated with each other through the communication bus 84; the memory 83 stores therein a computer program which, when executed by the processor 81, causes the processor 81 to execute to implement the method of detecting the energy conversion efficiency of a rotary generator as described in the above embodiments.
Since the principle of the controller for solving the problems is similar to the method for detecting the energy conversion efficiency of the rotary generator, the implementation of the controller can refer to the implementation of the method, and repeated details are not repeated.
The communication bus mentioned above may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface 82 is used for communication between the above-described electronic apparatus and other apparatuses.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor including a central processing unit, a Network Processor (NP), etc.; but may also be a Digital instruction processor (DSP), an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like.
Based on any one of the above embodiments, the computer readable storage medium of the embodiment of the invention stores thereon a computer program, and the computer program is executed by a processor to implement the method for detecting energy conversion efficiency of a rotary generator according to the above embodiment.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Referring to fig. 9a and 9b, in the embodiment, when referring to the mechanical component structure, reference is made to: the torque sensor 2 is connected with an output shaft of the preset motor 1, the torque sensor 2 is connected with an input shaft of the rotary generator at the same time, and the electrometer is electrically connected with the rotary generator to measure the output current of the rotary generator.
The tested rotary generator is driven to rotate by the preset motor 1, and the electrometer is connected with the rotary generator and an external resistor with the same internal resistance as the rotary generator in series.
The tested rotary generator is a rotary friction nano generator or a rotary electromagnetic generator. The rotary friction nano generator and the rotary electromagnetic generator both have various structural forms and specifications, and common structural forms are listed below respectively:
referring to fig. 9a, the friction nanogenerator includes a rotor 3 and a stator 4 which are coaxially connected, a fixed gap is formed between the rotor 3 and the stator 4, a plurality of fan-shaped first friction induction layers 5 are disposed on one surface of the rotor 3 facing the stator 4, the first friction induction layers 5 can be Fluorinated Ethylene Propylene (FEP) films, a plurality of second friction induction layers 6 are disposed on one surface of the stator 4 facing the rotor 3, the second friction induction layers 6 can be copper films, so that the second friction induction layers 6 can be simultaneously used as electrodes, the plurality of second friction induction layers 6 are connected in parallel by using a finger-inserted electrode connection method, the first friction induction layers 5 and the second friction induction layers 6 are in a critical contact state, and when the rotor 3 is driven to rotate relative to the stator 4, the rotary friction nanogenerator can output an electrical signal outwards; the change of the counter torque can be caused by changing the radius of the rotor 3 or the stator 4, changing the distance between the rotor 3 and the stator 4, or changing the number of friction induction layers on the rotor 3 and the stator 4;
referring to fig. 9b, the rotary electromagnetic generator includes a rotor 7 and a stator 8 coaxially connected, a fixed gap is formed between the rotor 7 and the stator 8, the rotor 7 is provided with a plurality of permanent magnets 9, N poles of the permanent magnets 9 face the stator 8, the stator 8 is provided with a plurality of copper coils 10, the copper coils 10 are wound in the same direction and connected in parallel, and when an external force drives the rotor 7 to rotate relative to the stator 8, the rotary electromagnetic generator can output an electrical signal outwards; the change of the counter moment can be caused by changing the radius of the rotor 7 or the stator 8, changing the distance between the rotor 7 and the stator 8, or changing the number of the permanent magnets 9 and the copper coils 10;
the rotary friction nano generator and the rotary electromagnetic generator are both provided with various other deformation structural forms, and the detection method and the detection device of the embodiment can realize detection of counter torque in the rotation process and detection of energy conversion efficiency for the rotary friction nano generator, the rotary electromagnetic generator and other rotary generators with different structural forms and specifications.
It should be understood by those skilled in the art that the foregoing is only illustrative of the present invention, and the scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A method of detecting energy conversion efficiency of a rotary generator, comprising:
providing input torque to the rotary generator through a preset motor to enable the rotary generator to work, measuring output current of the rotary generator driven by the preset motor at a preset rotating speed, and calculating output power of the rotary generator driven by the preset rotating speed according to the measured output current of the rotary generator driven by the preset rotating speed;
measuring the counter torque of a rotor of the rotary generator driven by a preset rotating speed, calculating to obtain an average counter torque, and calculating to obtain the input power of the rotary generator driven by the preset rotating speed according to the calculated average counter torque;
and calculating the energy conversion efficiency of the rotary generator driven by the preset rotating speed according to the calculated output power and input power of the rotary generator driven by the preset rotating speed.
2. The method of detecting energy conversion efficiency of a rotary electric generator as claimed in claim 1, further comprising:
and changing the preset rotating speed to obtain the corresponding relation between the energy conversion efficiency and the input power of the rotary generator.
3. The method of detecting energy conversion efficiency of a rotary electric generator as claimed in claim 1, wherein calculating an average counter torque comprises:
and recording the measured counter torque for multiple times within preset time, and calculating an average value according to the multiple records to obtain the average counter torque driven by the preset rotating speed.
4. The method of claim 1, wherein calculating the output power of the rotary generator at a predetermined speed comprises:
the output power is the product of the integral of the square of the output current and the external resistance.
5. The method of claim 1, wherein calculating the input power of the rotary generator at a predetermined speed comprises:
the input power is the product of the average counter torque and the preset rotating speed.
6. The method of claim 1, wherein the output current of the rotary generator at a predetermined speed is measured by an electrometer.
7. The method of claim 1, wherein the counter torque of the rotor of the rotary generator at a predetermined speed is measured by a torque sensor.
8. An apparatus for detecting energy conversion efficiency of a rotary generator, comprising:
the output power calculation unit is used for providing input torque for the rotary generator through the preset motor, enabling the rotary generator to work, measuring output current of the rotary generator under the driving of the preset motor at a preset rotating speed, and calculating output power of the rotary generator under the driving of the preset rotating speed according to the measured output current of the rotary generator under the driving of the preset rotating speed;
the input power calculation unit is used for measuring the counter torque of the rotor of the rotary generator driven by the preset rotating speed, calculating to obtain an average counter torque, and calculating to obtain the input power of the rotary generator driven by the preset rotating speed according to the calculated average counter torque;
and the energy conversion control unit is used for calculating the energy conversion efficiency of the rotary generator driven by the preset rotating speed according to the calculated output power and input power of the rotary generator driven by the preset rotating speed.
9. A controller, comprising: a memory, at least one processor, and a computer program; wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of detecting rotary generator energy conversion efficiency of any of claims 1-7.
10. A computer-readable storage medium, having stored thereon a computer program for execution by a processor to perform the method of detecting energy conversion efficiency of a rotary generator of any of claims 1-7.
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| CN114039503A (en) * | 2021-11-03 | 2022-02-11 | 中山大学 | Friction-electromagnetic composite power generation device and performance test platform and method thereof |
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| CN108152742A (en) * | 2018-03-20 | 2018-06-12 | 安徽江淮汽车集团股份有限公司 | A kind of vehicle generator efficiency test method |
| CN109458307A (en) * | 2018-12-21 | 2019-03-12 | 沈阳航空航天大学 | A kind of wind energy conversion system pneumatic efficiency and system generating efficiency synchronous measuring apparatus and method |
| CN210037037U (en) * | 2019-04-22 | 2020-02-07 | 昆明理工大学 | Actual measurement device for efficiency of generator of hydraulic power plant |
| CN110631747A (en) * | 2019-09-05 | 2019-12-31 | 昆明理工大学 | High-precision hydropower plant generator efficiency actual measurement device and use method thereof |
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| CN112834926A (en) * | 2021-03-26 | 2021-05-25 | 安徽天道动力设备有限公司 | Power output stability detection system of generator set |
| CN114039503A (en) * | 2021-11-03 | 2022-02-11 | 中山大学 | Friction-electromagnetic composite power generation device and performance test platform and method thereof |
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