CN114954025A - Method, device, system and medium for measuring temperature of electromagnet of maglev train - Google Patents
Method, device, system and medium for measuring temperature of electromagnet of maglev train Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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- B60L13/04—Magnetic suspension or levitation for vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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Abstract
The invention discloses a method, a device and a system for measuring the temperature of an electromagnet of a maglev train and a computer readable storage medium, which are applied to the technical field of maglev trains and aim to solve the problem that the internal temperature of the electromagnet cannot be detected in the prior art.
Description
Technical Field
The invention relates to the technical field of maglev trains, in particular to a method, a device and a system for measuring the temperature of an electromagnet of a maglev train and a computer readable storage medium.
Background
When the electromagnet of the high-speed maglev train works, the temperature is a key factor for restricting the insulating property and the service life of the magnetic pole of the electromagnet, and when the electromagnet works, the electromagnet needs to be electrified, and the magnetic pole inevitably generates heat. In order to avoid the influence of the overhigh temperature of the electromagnetic iron pole on the insulation performance of the electromagnetic iron pole, the internal temperature of the magnetic pole needs to be monitored, and the conventional method can only measure the temperature of the outer surface of the magnetic pole and has larger difference with the internal temperature of the magnetic pole.
In view of this, how to realize the measurement of the internal temperature of the electromagnet of the magnetic-levitation train becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the invention aims to provide a method, a device and a system for measuring the temperature of an electromagnet of a magnetic-levitation train and a computer readable storage medium, which can realize the detection of the internal temperature of the electromagnet and improve the detection accuracy in the using process.
In order to solve the technical problem, an embodiment of the present invention provides a method for measuring a temperature of an electromagnet of a maglev train, including:
collecting power supply parameters of an electromagnet to be detected on a magnetic-levitation train;
determining the internal temperature of the electromagnet corresponding to the power supply parameters according to the power supply parameters and a pre-established internal temperature prediction model of the electromagnet; the internal temperature prediction model of the electromagnet is established in advance based on the temperatures acquired by the temperature sensor arranged in the test magnetic pole under different power supply parameters.
Optionally, the prediction model of the internal temperature of the electromagnet is established in advance based on the temperatures acquired by the temperature sensor arranged in the test magnetic pole under different power supply parameters, and includes:
determining a plurality of test magnetic poles from a plurality of test electromagnets, and embedding a temperature sensor in each test magnetic pole;
simulating the running condition of the high-speed magnetic suspension train for each test electromagnet, and changing the power supply parameter of each test electromagnet in the simulation process;
recording the temperature value of a temperature sensor in each test magnetic pole under different power supply parameters;
and establishing an electromagnet internal temperature prediction model according to the temperature values under different power supply parameters.
Optionally, each of the test poles is located in a different loop.
Optionally, the establishing an electromagnet internal temperature prediction model according to each temperature value under different power supply parameters includes:
aiming at each power supply parameter under different power supply parameters, acquiring each temperature value corresponding to the power supply parameter;
calculating a temperature final value corresponding to the power supply parameter according to each temperature value;
and fitting the temperature final value corresponding to each power supply parameter to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet, and taking the fitting relational expression of the power supply parameters and the internal temperature of the electromagnet as an internal temperature prediction model of the electromagnet.
Optionally, the power supply parameters include voltage and current;
the fitting of the temperature final value corresponding to each power supply parameter to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet comprises the following steps:
and fitting the temperature final value corresponding to each power supply parameter according to a basis function T ═ a × Uc/Id + b to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet, wherein a and b both represent constants to be fitted, Uc represents power supply voltage, and Id represents loop current.
Optionally, the calculating a final temperature value corresponding to the power supply parameter according to each temperature value includes:
rejecting abnormal temperature values in the temperature values;
and calculating a final temperature value corresponding to the power supply parameter according to the rest temperature values.
Optionally, the calculating a final temperature value corresponding to the power supply parameter according to the remaining temperature values includes:
and calculating a temperature average value according to the rest temperature values, and taking the temperature average value as a temperature final value corresponding to the power supply parameter.
Optionally, the rejecting abnormal temperature values in the temperature values includes:
rejecting temperature values of which the temperature values are greater than a first preset temperature threshold value or less than a second preset temperature threshold value in each temperature value as abnormal temperature values; wherein the first preset temperature threshold is greater than the second preset temperature threshold.
Optionally, the method further includes:
and under the condition that the internal temperature of the electromagnet to be detected is greater than a preset threshold value, adjusting the power supply parameters of the power supply of the electromagnet to be detected.
Optionally, under the condition that the internal temperature of the electromagnet to be detected is greater than a preset threshold, adjusting the power supply parameter of the power supply of the electromagnet to be detected includes:
and reducing the power supply current and the power supply voltage of the electromagnet to be detected under the condition that the temperature inside the electromagnet of the electromagnet to be detected is greater than a preset threshold value.
The embodiment of the invention also provides a temperature measuring device for the electromagnet of the magnetic-levitation train, which comprises:
the acquisition module is used for acquiring power supply parameters of the electromagnet to be detected on the magnetic-levitation train;
the determining module is used for determining the internal temperature of the electromagnet corresponding to the power supply parameter according to the power supply parameter and a pre-established internal temperature prediction model of the electromagnet; the electromagnet internal temperature prediction model is established by the establishing module in advance based on the temperatures acquired by the temperature sensors arranged in the test magnetic poles under different power supply parameters.
Optionally, the establishing module includes:
the system comprises a presetting unit, a control unit and a control unit, wherein the presetting unit is used for determining a plurality of test magnetic poles from a plurality of test electromagnets and pre-burying a temperature sensor in each test magnetic pole; wherein each of the test poles is located in a different loop;
the simulation unit is used for simulating the running condition of the high-speed magnetic suspension train for each test electromagnet and changing the power supply parameter of each test electromagnet in the simulation process;
the recording unit is used for recording the temperature value of the temperature sensor in each testing magnetic pole under different power supply parameters;
and the establishing unit is used for establishing an electromagnet internal temperature prediction model according to each temperature value under different power supply parameters.
Optionally, the establishing unit includes:
the acquisition subunit is used for acquiring each temperature value corresponding to each power supply parameter under different power supply parameters;
the calculation subunit is used for calculating a temperature final value corresponding to the power supply parameter according to each temperature value;
and the fitting subunit is used for fitting the temperature final value corresponding to each power supply parameter to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet, and taking the fitting relational expression of the power supply parameters and the internal temperature of the electromagnet as an internal temperature prediction model of the electromagnet.
The embodiment of the invention also provides a temperature measuring system for the electromagnet of the magnetic-levitation train, which comprises the following components:
a memory for storing a computer program;
and the processor is used for realizing the steps of the method for measuring the temperature of the electromagnet of the magnetic-levitation train when executing the computer program.
The embodiment of the invention also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the steps of the method for measuring the temperature of the electromagnet of the magnetic-levitation train are realized.
The embodiment of the invention provides a method, a device and a system for measuring the temperature of an electromagnet of a magnetic-levitation train and a computer readable storage medium, wherein the method comprises the following steps: collecting power supply parameters of an electromagnet to be detected on a magnetic-levitation train; determining the internal temperature of the electromagnet corresponding to the power supply parameters according to the power supply parameters and a pre-established internal temperature prediction model of the electromagnet; the internal temperature prediction model of the electromagnet is established in advance based on the temperatures acquired by the temperature sensor arranged in the test magnetic pole under different power supply parameters.
Therefore, in the embodiment of the invention, an electromagnet internal temperature prediction model can be established in advance based on the temperatures acquired by the temperature sensor arranged in the testing magnetic pole under different power supply parameters, then the power supply parameters of the electromagnet to be detected on the magnetic suspension train are acquired in the running process of the magnetic suspension train, and then the acquired power supply parameters are analyzed based on the electromagnet internal temperature prediction model to obtain the electromagnet internal temperature corresponding to the power supply parameters, so that the detection of the electromagnet internal temperature is realized, and the detection accuracy is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for measuring the temperature of an electromagnet of a magnetic-levitation train according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a temperature detection of a test electromagnet according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a temperature measuring device for an electromagnet of a maglev train according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method, a device and a system for measuring the temperature of an electromagnet of a magnetic-levitation train and a computer readable storage medium, which can realize the detection of the internal temperature of the electromagnet and improve the detection accuracy in the using process.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for measuring a temperature of an electromagnet of a maglev train according to an embodiment of the present invention. The method comprises the following steps:
s110: collecting power supply parameters of an electromagnet to be detected on a magnetic-levitation train;
it should be noted that, in practical application, a test electrode may be predetermined, a temperature sensor is embedded in the test electrode, then the temperature sensor measures the temperature under different power supply parameters, and a prediction model of the internal temperature of the electromagnet is established based on the collected temperatures under different power supply parameters. And then, acquiring power supply parameters of the electromagnet to be detected on the magnetic-levitation train in the actual running process of the magnetic-levitation train.
S120: determining the internal temperature of the electromagnet corresponding to the power supply parameters according to the power supply parameters and a pre-established internal temperature prediction model of the electromagnet; the internal temperature prediction model of the electromagnet is established in advance based on the temperatures acquired by the temperature sensor arranged in the test magnetic pole under different power supply parameters.
Specifically, after the power supply parameters of the electromagnet to be detected are obtained, the power supply parameters are analyzed by adopting an electromagnet internal temperature prediction model, so that the corresponding electromagnet internal temperature can be determined, and the measurement of the internal temperature of the electromagnet to be detected is realized.
Further, the above prediction model of the internal temperature of the electromagnet is a process established in advance based on the temperatures acquired by the temperature sensor arranged in the testing magnetic pole under different power supply parameters, and specifically may include:
determining a plurality of test magnetic poles from the plurality of test electromagnets, and embedding a temperature sensor in each test magnetic pole; in order to obtain a more accurate prediction model of the internal temperature of the electromagnet, each test magnetic pole in the embodiment of the invention is positioned in different loops;
simulating the running condition of the high-speed magnetic suspension train for each test electromagnet, and changing the power supply parameters of each test electromagnet in the simulation process;
recording the temperature value of the temperature sensor in each test magnetic pole under different power supply parameters;
and establishing an electromagnet internal temperature prediction model according to the temperature values under different power supply parameters.
It should be noted that a single electromagnet of a high-speed maglev train comprises a plurality of loops, each loop is formed by connecting a plurality of magnetic poles in series, the temperatures of the magnetic poles in different loops and different positions have smaller range difference under the same working condition, and the temperature difference generated by the different positions is not considered in the invention because the temperature difference is smaller. In practical application, a plurality of electromagnets can be selected as testing electromagnets, a plurality of magnetic poles in different loops are selected from each electromagnet as testing magnetic poles, and then corresponding temperature sensors are embedded in each testing electrode, specifically as shown in fig. 2, temperature sensors can be embedded in gaps between the iron core and the windings in the manufacturing process of the magnetic poles, and the temperature sensors are connected with an electromagnetic ferromagnetic pole temperature prediction device. Specifically, a test electromagnet can be installed in an electromagnet test bed, the electromagnet test bed is used for simulating the working condition of a high-speed maglev train during operation, the power supply parameters of a power supply of the test electromagnet are adjusted, the temperature value of a temperature sensor in each test magnetic pole is collected, namely, the power supply parameters of each test electromagnet can be the same each time, the respective temperature value of each test magnetic pole under the same power supply parameter is obtained respectively, then after the power supply parameter of each test electromagnet is changed, the respective temperature value of each test magnetic pole under the changed power supply parameter is obtained respectively, the temperature value of each test magnetic pole under different power supply parameters is obtained, and then an electromagnet internal temperature prediction model is established based on each temperature value and each power supply parameter.
Further, the process of establishing the prediction model of the internal temperature of the electromagnet according to the temperature values under different power supply parameters may specifically include:
acquiring each temperature value corresponding to the power supply parameter aiming at each power supply parameter under different power supply parameters; calculating a temperature final value corresponding to the power supply parameter according to each temperature value;
and fitting the temperature final value corresponding to each power supply parameter to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet, and taking the fitting relational expression of the power supply parameters and the internal temperature of the electromagnet as an internal temperature prediction model of the electromagnet.
It should be noted that, for each group of different power supply parameters, temperature values of each test magnetic pole corresponding to the power supply parameter are obtained, and then a temperature final value corresponding to the power supply parameter is further calculated according to the temperature values, specifically, in order to obtain a more accurate temperature final value, an abnormal temperature value in each temperature value may be rejected, for example, a temperature value whose temperature value is greater than a first preset temperature threshold (maximum temperature threshold) or less than a second preset temperature threshold (minimum temperature threshold) is taken as an abnormal temperature value, so as to obtain remaining temperature values, where the first preset temperature threshold is greater than the second preset temperature threshold, and specific numerical values of the first preset temperature threshold and the second preset temperature threshold may be determined according to an actual situation, which is not particularly limited in the embodiment of the present invention. And then calculating a temperature mean value according to the rest temperature values, and taking the temperature mean value as a temperature final value corresponding to the power supply parameter. And then fitting each power supply parameter and the corresponding temperature final value to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet, and taking the fitting relational expression of the power supply parameters and the internal temperature of the electromagnet as an internal temperature prediction model of the electromagnet, thereby obtaining the internal temperature prediction model of the electromagnet with higher accuracy.
Specifically, the power supply parameters in the embodiment of the present invention include voltage and current;
then, the process of fitting the temperature final value corresponding to each power supply parameter to obtain a fitting relation between the power supply parameter and the internal temperature of the electromagnet may include:
and fitting the temperature final value corresponding to each power supply parameter according to a basis function T ═ a × Uc/Id + b to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet, wherein a and b represent constants needing fitting, Uc represents power supply voltage, and Id represents loop current.
That is, in practical application, each power supply parameter and the corresponding temperature final value may be fitted according to a basis function T ═ a × Uc/Id + b to obtain a fitting relation T ═ a × U/I + b, where U is a power supply current and I is a corresponding power supply voltage, so as to collect power supply parameters (a power supply current and a power supply voltage) of the electromagnet to be detected in practical application, and further match the corresponding internal temperature T of the electromagnet according to the fitting relation.
In addition, in order to improve the safety of the electromagnet, the embodiment of the invention may further include:
and under the condition that the internal temperature of the electromagnet to be detected is greater than a preset threshold value, adjusting the power supply parameters of the power supply of the electromagnet to be detected.
It can be understood that, after the internal temperature of the electromagnet corresponding to the power supply parameter is determined according to the power supply parameter and the pre-established internal temperature prediction model of the electromagnet, the internal temperature of the electromagnet may be further compared with a preset threshold, and when the internal temperature of the electromagnet is greater than the preset threshold, it is indicated that the internal temperature of the electromagnet is too high, at this time, the corresponding power supply source may be controlled by the power supply controller of the electromagnet to adjust the power supply parameter, specifically, the input of the power supply current and voltage may be reduced, for example, a preset change amount may be predetermined, and when the power supply current and voltage are reduced, the current or voltage of the preset change amount is reduced each time, so as to implement feedback adjustment of the internal temperature of the electromagnet.
Therefore, in the embodiment of the invention, an electromagnet internal temperature prediction model can be established in advance based on the temperatures acquired by the temperature sensor arranged in the testing magnetic pole under different power supply parameters, then the power supply parameters of the electromagnet to be detected on the magnetic suspension train are acquired in the running process of the magnetic suspension train, and then the acquired power supply parameters are analyzed based on the electromagnet internal temperature prediction model to obtain the electromagnet internal temperature corresponding to the power supply parameters, so that the detection of the electromagnet internal temperature is realized, and the detection accuracy is improved.
On the basis of the above embodiment, the embodiment of the present invention further provides a temperature measuring device for an electromagnet of a maglev train, and specifically refers to fig. 3. The device includes:
the acquisition module 21 is used for acquiring power supply parameters of the electromagnet to be detected on the magnetic-levitation train;
the determining module 22 is configured to determine the internal temperature of the electromagnet corresponding to the power supply parameter according to the power supply parameter and a pre-established internal temperature prediction model of the electromagnet; the internal temperature prediction model of the electromagnet is established by the establishing module in advance based on the temperatures acquired by the temperature sensor arranged in the testing magnetic pole under different power supply parameters.
Further, the establishing module comprises:
the preset unit is used for determining a plurality of test magnetic poles from a plurality of test electromagnets and pre-burying a temperature sensor in each test magnetic pole; wherein each test pole is located in a different loop;
the simulation unit is used for simulating the running condition of the high-speed magnetic suspension train for each test electromagnet and changing the power supply parameter of each test electromagnet in the simulation process;
the recording unit is used for recording the temperature value of the temperature sensor in each testing magnetic pole under different power supply parameters;
and the establishing unit is used for establishing an electromagnet internal temperature prediction model according to each temperature value under different power supply parameters.
Further, the establishing unit includes:
the acquiring subunit is used for acquiring each temperature value corresponding to the power supply parameter aiming at each power supply parameter under different power supply parameters;
the calculation subunit is used for calculating a temperature final value corresponding to the power supply parameter according to each temperature value;
and the fitting subunit is used for fitting the temperature final value corresponding to each power supply parameter to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet, and taking the fitting relational expression of the power supply parameters and the internal temperature of the electromagnet as an internal temperature prediction model of the electromagnet.
It should be noted that the temperature measuring device for the electromagnet of the magnetic-levitation train provided in the embodiment of the present invention has the same beneficial effects as the temperature measuring method for the electromagnet of the magnetic-levitation train provided in the above embodiment, and for the specific description of the temperature measuring method for the electromagnet of the magnetic-levitation train related in the embodiment of the present invention, reference is made to the above embodiment, and the description of the present invention is omitted here.
On the basis of the above embodiment, the embodiment of the present invention further provides a temperature measurement system for an electromagnet of a magnetic levitation train, which comprises:
a memory for storing a computer program;
and the processor is used for realizing the steps of the method for measuring the temperature of the electromagnet of the magnetic-levitation train when executing the computer program.
For example, the processor in the embodiment of the invention can be specifically used for acquiring power supply parameters of the electromagnet to be detected on the magnetic-levitation train; determining the internal temperature of the electromagnet corresponding to the power supply parameters according to the power supply parameters and a pre-established internal temperature prediction model of the electromagnet; the internal temperature prediction model of the electromagnet is established in advance based on the temperatures acquired by the temperature sensor arranged in the testing magnetic pole and under different power supply parameters.
On the basis of the foregoing embodiments, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above method for measuring the temperature of the electromagnet of a magnetic-levitation train are implemented.
The computer-readable storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. A temperature measuring method for an electromagnet of a magnetic-levitation train is characterized by comprising the following steps:
collecting power supply parameters of an electromagnet to be detected on a magnetic-levitation train;
determining the internal temperature of the electromagnet corresponding to the power supply parameters according to the power supply parameters and a pre-established internal temperature prediction model of the electromagnet; the internal temperature prediction model of the electromagnet is established in advance based on the temperatures acquired by the temperature sensor arranged in the test magnetic pole under different power supply parameters.
2. The method for measuring the temperature of the electromagnet of the magnetic-levitation train according to claim 1, wherein the internal temperature prediction model of the electromagnet is established in advance based on the temperatures acquired by the temperature sensor arranged in the test magnetic pole under different power supply parameters, and comprises the following steps:
determining a plurality of test magnetic poles from a plurality of test electromagnets, and embedding a temperature sensor in each test magnetic pole;
simulating the running condition of the high-speed magnetic suspension train for each test electromagnet, and changing the power supply parameter of each test electromagnet in the simulation process;
recording the temperature value of the temperature sensor in each testing magnetic pole under different power supply parameters;
and establishing an electromagnet internal temperature prediction model according to the temperature values under different power supply parameters.
3. A method for measuring the temperature of an electromagnet of a magnetic-levitation train as recited in claim 2, wherein each of said test poles is located in a different loop.
4. The method for measuring the temperature of the electromagnet of the magnetic-levitation train according to the claim 2, wherein the establishing of the internal temperature prediction model of the electromagnet according to the temperature values under different power supply parameters comprises the following steps:
aiming at each power supply parameter under different power supply parameters, acquiring each temperature value corresponding to the power supply parameter;
calculating a temperature final value corresponding to the power supply parameter according to each temperature value;
and fitting the temperature final value corresponding to each power supply parameter to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet, and taking the fitting relational expression of the power supply parameters and the internal temperature of the electromagnet as an internal temperature prediction model of the electromagnet.
5. A method for measuring the temperature of an electromagnet of a magnetic-levitation train as recited in claim 4, wherein the power supply parameters comprise voltage and current;
the fitting of the temperature final value corresponding to each power supply parameter to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet comprises the following steps:
and fitting the temperature final value corresponding to each power supply parameter according to a basis function T ═ a × Uc/Id + b to obtain a fitting relational expression of the power supply parameters and the internal temperature of the electromagnet, wherein a and b both represent constants to be fitted, Uc represents power supply voltage, and Id represents loop current.
6. The method for measuring the temperature of the electromagnet of the magnetic-levitation train according to the claim 4, wherein the step of calculating the final temperature value corresponding to the power supply parameter according to each temperature value comprises the following steps:
rejecting abnormal temperature values in the temperature values;
and calculating a final temperature value corresponding to the power supply parameter according to the rest temperature values.
7. The method for measuring the temperature of the electromagnet of the magnetic-levitation train according to the claim 6, wherein the step of calculating the final temperature value corresponding to the power supply parameter according to the rest temperature values comprises the following steps:
and calculating a temperature average value according to the rest temperature values, and taking the temperature average value as a temperature final value corresponding to the power supply parameter.
8. The method for measuring the temperature of the electromagnet of the magnetic-levitation train according to claim 6, wherein the step of eliminating abnormal temperature values in the temperature values comprises the following steps:
rejecting temperature values of which the temperature values are greater than a first preset temperature threshold value or less than a second preset temperature threshold value in each temperature value as abnormal temperature values; wherein the first preset temperature threshold is greater than the second preset temperature threshold.
9. The method for measuring the temperature of the electromagnet of the magnetic-levitation train according to any one of claims 1 to 8, further comprising the following steps:
and under the condition that the internal temperature of the electromagnet to be detected is greater than a preset threshold value, adjusting the power supply parameters of the power supply of the electromagnet to be detected.
10. The method for measuring the temperature of the electromagnet of the magnetic-levitation train according to claim 9, wherein the adjusting the power supply parameter of the power supply of the electromagnet to be detected under the condition that the internal temperature of the electromagnet to be detected is greater than a preset threshold value comprises:
and reducing the power supply current and the power supply voltage of the electromagnet to be detected under the condition that the temperature inside the electromagnet of the electromagnet to be detected is greater than a preset threshold value.
11. The utility model provides a maglev train electro-magnet temperature measuring device which characterized in that includes:
the acquisition module is used for acquiring power supply parameters of the electromagnet to be detected on the magnetic-levitation train;
the determining module is used for determining the internal temperature of the electromagnet corresponding to the power supply parameter according to the power supply parameter and a pre-established internal temperature prediction model of the electromagnet; the electromagnet internal temperature prediction model is established by the establishing module in advance based on the temperatures acquired by the temperature sensors arranged in the test magnetic poles under different power supply parameters.
12. The utility model provides a maglev train electro-magnet temperature measurement system which characterized in that includes:
a memory for storing a computer program;
a processor for implementing the steps of the method of measuring the temperature of an electromagnet of a magnetic-levitation train as claimed in any one of claims 1 to 10 when said computer program is executed.
13. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for measuring the temperature of an electromagnet of a magnetic-levitation train according to any one of claims 1 to 10.
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|---|---|---|---|---|
| CN103970947A (en) * | 2014-05-05 | 2014-08-06 | 同济大学 | Real-time temperature rise measurement method of electromagnetic system of low-voltage apparatus based on finite element analysis |
| CN108645451A (en) * | 2018-07-12 | 2018-10-12 | 中铁磁浮科技（成都）有限公司 | Middle speed magnetic suspension train on-line condition monitoring system |
| KR20190141869A (en) * | 2018-06-15 | 2019-12-26 | 전자부품연구원 | Apparatus and method for estimating internal temperature of a motor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103970947A (en) * | 2014-05-05 | 2014-08-06 | 同济大学 | Real-time temperature rise measurement method of electromagnetic system of low-voltage apparatus based on finite element analysis |
| KR20190141869A (en) * | 2018-06-15 | 2019-12-26 | 전자부품연구원 | Apparatus and method for estimating internal temperature of a motor |
| CN108645451A (en) * | 2018-07-12 | 2018-10-12 | 中铁磁浮科技（成都）有限公司 | Middle speed magnetic suspension train on-line condition monitoring system |
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