CN108960531B - Environment power generation processing method - Google Patents
Environment power generation processing method Download PDFInfo
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- CN108960531B CN108960531B CN201810839019.3A CN201810839019A CN108960531B CN 108960531 B CN108960531 B CN 108960531B CN 201810839019 A CN201810839019 A CN 201810839019A CN 108960531 B CN108960531 B CN 108960531B
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- 238000010248 power generation Methods 0.000 title claims abstract description 39
- 238000003672 processing method Methods 0.000 title claims description 9
- 230000007613 environmental effect Effects 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005457 optimization Methods 0.000 claims abstract description 12
- 230000002068 genetic effect Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000012549 training Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
Abstract
The invention relates to an environmental power generation treatment method. The environmental power generation method comprises the following steps: a collecting step, collecting and storing at least two alternating current signals generated by environment; optimizing, namely calculating an adjusting parameter through the acquired electric signals by aiming at optimizing the superposed output voltage of the electric signals; and adjusting, namely adjusting the electric signal according to the calculated adjusting parameter, and forming an output voltage. The method calculates the optimal adjustment parameters of the electric signals, then adjusts the electric signals to carry out superposition output, realizes the optimization of voltage output, can realize higher and more stable voltage output by the low-frequency and low-level electric signals, improves the environmental power generation efficiency, and meets the requirements of various environmental power generation scenes.
Description
Technical Field
The invention relates to an environmental power generation processing method, in particular to an output optimization system for vibration energy environmental power generation.
Background
Most of the existing devices for environment power generation are applied to wind energy, ocean energy and solar energy. In the prior art, research and experiments on high-frequency vibration sources are performed for environmental power generation of vibration sources, but good output voltage is difficult to obtain when the output level is low or the frequency of the vibration source is low, in part due to a diode bridge used in converting alternating current into direct current, and the diode bridge consumes a certain voltage value in the conversion process. In addition, since the vibration ratio of a high frequency is not high in nature, it is necessary to obtain high efficiency at a low frequency and a low level. Therefore, a scheme for improving the environmental power generation efficiency is needed, and the input voltage signal is optimized so as to improve the environmental power generation efficiency under low frequency and low level.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an environmental power generation processing method to improve the environmental power generation efficiency under low frequency and low level.
In order to achieve the purpose, the invention adopts the following technical scheme: the environmental power generation treatment method comprises the following steps: a collecting step, collecting and storing at least two alternating current signals generated by environment; optimizing, namely calculating an adjusting parameter through the acquired electric signals by aiming at optimizing the superposed output voltage of the electric signals; and adjusting, namely adjusting the electric signal according to the calculated adjusting parameter, and forming an output voltage.
The method calculates the optimal adjustment parameters of the electric signals, then adjusts the electric signals to carry out superposition output, realizes the optimization of voltage output, can realize higher and more stable voltage output by the low-frequency and low-level electric signals, improves the environmental power generation efficiency, and meets the requirements of various environmental power generation scenes.
In one embodiment of the present invention, the optimization step uses a cost function to calculate the optimal adjustment parameters. And the formula of the cost function is:
wherein V1 and V2 are different input voltages, V' is regulated voltage,
and searching a global minimum value of the cost function C through a genetic algorithm, wherein a parameter corresponding to the global minimum value is an optimal adjustment parameter. And then in the adjusting step, adjusting the phase of the electric signals according to the calculated adjusting parameters, then adjusting the period of the inversion voltage according to the adjusting parameters after the electric signals are superposed, and finally forming the optimal output voltage.
The cost function described above considers the voltage as a vector, expressed in the form of a left-right vector. The cost function is used to measure the difference between the adjusted output and the optimal output. CPOSFor measuring the difference between the maximum positive voltages, i.e. after all the voltages are corrected, the difference is compared with the currentThe product of the voltage difference of the voltages is desirably a positive level as much as possible, and therefore the adjusted voltage is compared with the case where all of the voltages are positive. CVrmsThe maximum rms difference is measured, i.e., proportional to the effective voltage difference. The desired parameters may be such that the sum of the two is minimized. When the minimum value of the cost function is found, the corresponding phase displacement value and the corresponding period value are the optimal values, and as the cost function has more local minimum values, a relatively mature genetic algorithm can be used for finding the global minimum value.
The environment power generation of the invention is vibration energy environment power generation. The equipment for collecting the environmental power generation in the collecting step comprises at least one pair of metal shrapnels. In the pair of elastic sheets, the same side of the upper elastic sheet and the lower elastic sheet is fixedly connected with a vibration source, the upper elastic sheet and the lower elastic sheet are adjacent but are not contacted with each other in a static state, the outer side of each elastic sheet is tightly attached with a piezoelectric sheet, and an electrode sheet is attached to the upper surface of each piezoelectric sheet. The spring plate is provided with a gravity block at one end far away from the vibration source.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
FIG. 1 is a schematic diagram of an environmental power generation system of the present invention.
FIG. 2 is a schematic diagram of an environmental power plant in accordance with the present invention.
FIG. 3 is a voltage waveform diagram collected for ambient power generation in an embodiment of the present invention.
FIG. 4 is a cost function three-dimensional data diagram constructed by the environmental power generation processing method in the embodiment of the invention.
Fig. 5 is a final optimized voltage output waveform diagram of the environmental power generation processing method in the embodiment of the invention.
Detailed Description
In order to more fully understand the technical contents of the present invention, the technical solutions of the present invention will be further described and illustrated with reference to the following specific embodiments.
The environmental power generation processing method comprises the following steps: a collecting step, collecting and storing at least two alternating current signals generated by environment; optimizing, namely calculating an adjusting parameter through the acquired electric signals by aiming at optimizing the superposed output voltage of the electric signals; and adjusting, namely adjusting the electric signal according to the calculated adjusting parameter, and forming an output voltage.
Referring to fig. 1, fig. 1 is a schematic diagram of a general system architecture adopted by the environmental power generation processing method of the present invention. The electrical signal generated by the environmental power generation of fig. 1 is input to a pre-training subsystem, where the adjusting device of the subsystem is used to adjust the phase and period of the electrical signal, and the training device is the optimization algorithm in the optimization step. The electric signal generated by environment power generation is input into an adjusting device to carry out phase and period adjustment, the output electric signal is input into an optimization algorithm, namely a training device, the optimized phase and period are calculated and input into the adjusting device, then the electric signal is adjusted according to the optimized phase, and then the period of reversal voltage is adjusted, so that the output is direct-current positive voltage as far as possible. The output voltage may be stored or may be input directly to a larger external circuit.
The method calculates the optimal adjustment parameters of the electric signals, then adjusts the electric signals to carry out superposition output, realizes the optimization of voltage output, can realize higher and more stable voltage output by the low-frequency and low-level electric signals, improves the environmental power generation efficiency, and meets the requirements of various environmental power generation scenes.
The environmental power generation of the present embodiment is vibration energy environmental power generation. Vibrational energy, i.e., energy generated by vibration. The vibration energy is commonly wind power, tide, earthquake, vehicle chassis vibration, road and bridge vibration and the like.
First in the collection step, the electrical signals of the environmental power generation can be collected by a simple device as in fig. 2. In fig. 2, there are a pair of upper and lower metal elastic pieces 21 and 22, and the elastic pieces 21 and 22 have resonance structures with different frequency responses in order to generate larger vibration energy. The upper spring plate 21 is adjacent to the lower spring plate 22 but does not contact with each other in a static state, and a gap is reserved between the upper spring plate and the lower spring plate. The piezoelectric sheet 31 is closely attached to the outer side of the upper spring plate 21, the electrode sheet 41 is attached to the upper surface of the piezoelectric sheet 31, and the electrode sheet 41 can be connected by one lead to collect an electric signal of the piezoelectric sheet 31. The piezoelectric sheet 32 is also attached to the lower surface of the lower elastic sheet 22, the electrode sheet 42 is also attached to the lower surface of the piezoelectric sheet 32, and an electrical signal of the piezoelectric sheet 32 can be acquired by connecting the electrode sheet 42 with a lead. In the pair of elastic sheets 21 and 22, the upper elastic sheet 21 and the lower elastic sheet 22 are both fixedly connected with the vibration source 10 at the same side, and the ends far away from the vibration source 10 are both provided with the gravity blocks 24. The weight block 24 may be a lead block. The weight block 24 is placed on the outside of the two spring plates 21, 22 facing away from each other, as shown in fig. 2. The weight 24 serves to increase the amplitude of the vibrations. When the vibration source 10 vibrates, the upper elastic sheet 21 and the lower elastic sheet 22 are driven to vibrate up and down, at this time, due to the change of pressure, the piezoelectric sheets 31 and 32 generate voltage, the piezoelectric sheet 31 of the upper elastic sheet 21 generates a voltage signal, the piezoelectric sheet 32 of the lower elastic sheet 22 also generates an independent voltage signal, and the two voltage signals have independent phases and periods, so if the two voltage signals are directly superposed, positive and negative voltages are certainly generated to offset each other, the output voltage is reduced, and the power generation efficiency is not high.
In other embodiments, more than 1 pair of such upper and lower spring plates may be provided, such that more than 1 pair of electrical signals are generated. For more than 1 pair of electric signals, each pair of electric signals can be optimally superposed first, and finally, the total optimal superposition is carried out, so that more efficient voltage output is formed.
In other embodiments, the collection of environmental power generation can also be realized by the principle of electromagnetic induction, that is, electricity is generated by cutting magnetic induction lines. The bar-shaped magnet can be placed on the elastic sheet, the metal coil is arranged above the magnet, the fixed end of the elastic sheet is connected with the vibration source, and when the vibration source vibrates, the magnet passes through the metal coil in a reciprocating mode, and the metal coil generates an alternating current signal.
Assuming that the waveform of the electric signal obtained in the collecting step is as shown in fig. 3, the Top device waveform and the Bottom device waveform are superposed, and a phase difference exists between the two signals, so that a Series device waveform is obtained. The optimization step aims at optimizing the superposed output voltage of the electric signals, and the adjustment parameters are calculated by the collected electric signals. The optimization step of the embodiment calculates the optimal adjustment parameters through a cost function and a genetic algorithm.
Firstly, a formula of a cost function is established:
wherein V1、V2For different input voltages, V' is the regulated voltage,
the cost function described above considers the voltage as a vector, expressed in the form of a left-right vector. The cost function C is used to measure the difference between the adjusted output and the optimal output, with the final objective of finding the minimum of the difference. CPOSFor the maximum positive voltage difference measurement, i.e., the sum of the products of the voltage differences between all the voltages after being positive and the existing voltage, it is desirable that the output voltage be as positive as possible, so that the adjusted voltage is compared with the voltage when all the voltages are positive. CVrmsThe maximum rms difference is measured, i.e., proportional to the effective voltage difference. The optimal tuning parameters are desired to minimize the sum of the two, i.e., the value of the cost function C. When the minimum value of the cost function C is found, the corresponding phase shift value and period value are the optimal values. The MATLAB software is used for plotting the cost function C to obtain a graph shown in FIG. 4, and the graph shown in FIG. 4 shows that the cost function has more local minimum values, so that a global minimum value can be found by using a more common genetic algorithm. The MATLAB software is provided with a genetic algorithm toolbox, and the cost function C is input into a genetic algorithm, so that the global minimum and the corresponding parameters (phase and period) thereof are easy to obtain.
Finally, in the adjusting step, the phase of the electric signal is adjusted according to the calculated adjusting parameter, then the electric signal is superposed, then the period of the reversal voltage is adjusted according to the period parameter of the adjusting parameter by the superposed electric signal, and finally the expected direct current positive voltage output is formed. Fig. 5 shows a waveform diagram of the adjusted voltage signal output.
The original output which is not optimized is alternating current output, and the mean square value is 0.59. Comparing the regulated voltage output with the original output and the mean square value obtained by the existing diode bridge method, wherein the magnitude of the mean square value corresponds to the magnitude of the output voltage obtained by the corresponding method, and the result is shown in the following table:
| mean square value | |
| Raw output | 0.59 |
| Diode bridge | 0.22 |
| This example | 0.59 |
As can be seen from the above table, the method of the present embodiment can basically maintain the original ac output voltage, and has advantages over the diode bridge scheme, less voltage loss, and high power generation efficiency.
In other embodiments, if more than 1 pair of such dome/dome blades are provided, more than 1 pair of electrical signals are generated. For more than 1 pair of electric signals, each pair of electric signals can be optimized and superposed according to the method and the genetic algorithm to obtain a plurality of optimized electric signals, and the electric signals are then optimized and superposed according to the method and the genetic algorithm to finally form more efficient voltage output.
The above-mentioned description is only for the purpose of further explaining the technical contents of the present invention by way of example, so as to facilitate the reader's understanding, but does not represent a limitation to the embodiments of the present invention, and any technical extension or re-creation made by the present invention is protected by the present invention.
Claims (6)
1. An environmental power generation processing method is characterized by comprising the following steps:
a collecting step, collecting and storing at least two alternating current signals generated by environment;
an optimization step, which aims at optimizing the superposed output voltage of the electric signals and calculates the optimal adjustment parameters through the collected electric signals;
adjusting, namely adjusting the electric signal according to the calculated adjustment parameter and forming an output voltage;
in the optimization step, a cost function is adopted to calculate the optimal adjustment parameters;
in the adjusting step, the phase of the electric signals is adjusted according to the calculated adjusting parameters, and then the electric signals are superposed and the period of the inversion voltage is adjusted according to the adjusting parameters to form the output voltage.
2. The method of claim 1, wherein the cost function is formulated as:
wherein V1, V2 are different input voltages, V' is regulated voltage,
3. the method of claim 2, wherein the global minimum of the cost function C is found by a genetic algorithm, and the parameter corresponding to the global minimum is the optimal adjustment parameter.
4. The method of claim 1, wherein the environmental power generation is vibrational energy environmental power generation.
5. The method of claim 4, wherein in the collecting step, the equipment for collecting environmental power comprises at least one pair of metal domes; in the pair of elastic sheets, the same side of the upper elastic sheet and the lower elastic sheet is fixedly connected with a vibration source, the upper elastic sheet and the lower elastic sheet are adjacent but do not contact with each other in a static state, the outer side of each elastic sheet is tightly attached with a piezoelectric sheet, and an electrode sheet is attached to the upper surface of each piezoelectric sheet.
6. The method of claim 5, wherein the end of the spring plate remote from the vibration source is provided with a weight block.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103493356A (en) * | 2011-05-09 | 2014-01-01 | 株式会社村田制作所 | Piezoelectric power generating apparatus |
| CN204119087U (en) * | 2014-11-04 | 2015-01-21 | 吉林大学 | A kind of cantilever coupling piezo-electric generating cantilever beam |
| CN104541444A (en) * | 2011-10-07 | 2015-04-22 | 弗兰霍菲尔运输应用研究公司 | Rectifier circuit with ac side short-circuiting function and synchronized switch harvesting on inductor converter |
| CN106712614A (en) * | 2017-03-17 | 2017-05-24 | 保定天威保变电气股份有限公司 | Waveform factor correcting device and waveform factor correcting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414379B (en) * | 2013-08-28 | 2015-08-12 | 上海交通大学 | Based on the piezoelectric energy gatherer of linear resonator and non-linear vibration generator |
| CN104767266B (en) * | 2015-03-10 | 2017-04-26 | 西安交通大学 | Power generation backpack based on piezoelectric effect |
| CN109067245A (en) * | 2018-08-22 | 2018-12-21 | 延安大学 | A kind of device of ambient vibration collection of energy and storage system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103493356A (en) * | 2011-05-09 | 2014-01-01 | 株式会社村田制作所 | Piezoelectric power generating apparatus |
| CN104541444A (en) * | 2011-10-07 | 2015-04-22 | 弗兰霍菲尔运输应用研究公司 | Rectifier circuit with ac side short-circuiting function and synchronized switch harvesting on inductor converter |
| CN204119087U (en) * | 2014-11-04 | 2015-01-21 | 吉林大学 | A kind of cantilever coupling piezo-electric generating cantilever beam |
| CN106712614A (en) * | 2017-03-17 | 2017-05-24 | 保定天威保变电气股份有限公司 | Waveform factor correcting device and waveform factor correcting method |
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