CN217787242U - Integrated system for measuring superconductor alternating current loss - Google Patents
Integrated system for measuring superconductor alternating current loss Download PDFInfo
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- CN217787242U CN217787242U CN202220730987.2U CN202220730987U CN217787242U CN 217787242 U CN217787242 U CN 217787242U CN 202220730987 U CN202220730987 U CN 202220730987U CN 217787242 U CN217787242 U CN 217787242U
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Abstract
The utility model discloses a comprehensive system for measuring the superconductor alternating current loss, which belongs to the technical field of superconducting power; the method comprises the following steps: the device comprises a phase-locked amplifier, a data acquisition unit, a power analyzer and an upper computer; the lock-in amplifier, the data acquisition unit and the power analyzer are all connected with the upper computer; the utility model discloses the phase-locked amplifier who will be applicable to superconductor signal acquisition under different operating voltage respectively, data collection station and power analyzer integration are assembled together, and carry out on-line control to each measuring instrument through the host computer, and handle the data that each measuring instrument gathered, can realize the alternating current loss measurement of superconductor under different operating voltage with higher measurement accuracy, be an integrated measurement system who collects superconductive strip and magnet alternating current loss measurement function in an organic whole, the measured object of alternating current loss and voltage range have been expanded greatly.
Description
Technical Field
The utility model belongs to the technical field of superconducting power, more specifically relates to a measure superconductor alternating current loss's integrated system.
Background
The superconducting power technology is a science developed based on the application of superconducting materials in the field of power energy, mainly researches how to apply a superconducting power device to a power system, and the superconducting power device has the characteristics of miniaturization, light weight, low energy consumption and the like and has important significance for improving the stability, reliability and electric energy quality of the power system. The superconducting tapes and the superconducting magnets are core components of the superconducting power device, and the stability and reliability of the superconducting tapes and the superconducting magnets are guaranteed to be of great importance for the superconducting power device.
Superconductors have three critical parameters: critical current, critical magnetic field and critical temperature, the superconducting power device must operate in a critical curved surface formed by the three parameters, any parameter exceeds the critical curved surface, the superconductor loses superconductivity, and the superconducting power device can be burnt out in serious cases. The superconducting power device usually operates in a complex electromagnetic thermal environment, and thermal disturbance or electromagnetic disturbance in an operating environment may cause one or more of the three parameters to exceed a critical curved surface, so that the superconductor is quenched, wherein heat loss (alternating current loss) generated when the superconducting power device operates in a dynamic current or dynamic magnetic field environment is a main factor for determining the quenching of the superconducting power device. The ac losses of a superconductor include: hysteresis losses of the superconductor, coupling losses between superconducting filaments, eddy current losses of the metal layer, and ferromagnetic losses of the base layer. The ac loss widely exists in the superconducting power device, and is a problem that the safe and stable operation of the superconducting power device cannot be avoided.
The existence of alternating current loss has an important influence on the safe and stable operation of the superconducting power device, and is mainly reflected in that: (1) heat generated by the alternating current loss can aggravate the volatilization of the coolant and increase the operation cost; (2) the design of the conduction cooling system must take into account the distribution of ac losses; (3) the temperature measurement system also needs to consider the parts with concentrated alternating current loss distribution; (4) the electromagnetic design of the superconducting magnet also needs to consider how to reduce the influence of the alternating current loss on the operation stability of the magnet as much as possible; (5) if the heat generated by the ac loss cannot be balanced by the cold generated by the refrigeration system, the temperature of the superconductor may continuously rise, causing the superconductor to lose superconductivity, and in severe cases, causing the superconducting magnet to be permanently damaged. In a word, the alternating current loss is a factor which must be considered in the design of the superconducting power device electromagnetism, the structural design, the refrigeration system design, the quench monitoring system design and the protection system design, the alternating current loss in the operation process of the superconducting power device is evaluated, and a method for rapidly and accurately measuring the alternating current loss is a precondition for wide application of the superconducting power device.
The experimental measurement of the alternating current loss aims at obtaining the loss value of the superconducting power device in the actual working state, providing data support for a refrigeration system, a quench monitoring system and a protection system, and simultaneously verifying the accuracy of a superconductor numerical simulation model. The experimental measurement method for the superconductor alternating current loss mainly comprises an electrical measurement method, a magnetic measurement method and a thermal measurement method. The system for measuring the alternating current loss based on the electrical measurement method generally has two measurement modes, namely, the effective value and the resistive voltage component of transmission current are measured through a phase-locked amplifier to obtain the alternating current loss of a superconductor, and a data acquisition unit is used for rapidly and accurately acquiring current and voltage data of the superconductor in a unit period and calculating the alternating current loss through a digital integration method. The phase-locked amplifier has higher resolution, but the maximum voltage allowed to be input is usually not more than 1V, and the phase-locked amplifier cannot be suitable for measuring the alternating current loss of a superconductor with larger working voltage; the resolution of the data collector is slightly lower than that of a phase-locked amplifier, the maximum allowable input voltage is only 42V, and the data collector cannot be suitable for measuring the alternating current loss of a superconductor with larger working voltage. Therefore, for the measurement of the ac loss of the superconductor at different operating voltages, it is difficult to ensure the accuracy of the measurement result by using the lock-in amplifier or the data collector alone, and the measurable object and the voltage range are narrow.
SUMMERY OF THE UTILITY MODEL
To the above defect or the improvement demand of prior art, the utility model provides a measure superconductor alternating current loss's integrated system for solve traditional alternating current loss measurement system and can't realize the technical problem of the alternating current loss measurement of superconductor under the different operating voltage with higher measurement accuracy.
In order to achieve the above object, the present invention provides an integrated system for measuring the ac loss of a superconductor, comprising: the device comprises a phase-locked amplifier, a data acquisition unit, a power analyzer and an upper computer; the phase-locked amplifier, the data acquisition unit and the power analyzer are all connected with the upper computer;
the type of the superconductor to be tested is one or more of a superconducting tape, a superconducting magnet with the working voltage between 0 and 42V and a superconducting magnet with the working voltage more than 42V;
the phase-locked amplifier is used for acquiring a current signal and a voltage signal of the superconducting tape under an alternating current working condition, further acquiring a current effective value and a resistive voltage of the superconducting tape, and uploading the current effective value and the resistive voltage to an upper computer;
the data acquisition unit is used for acquiring a current signal and a voltage signal of the superconducting magnet with the working voltage of 0-42V under an alternating current working condition at a fixed sampling rate and uploading the current signal and the voltage signal to an upper computer;
the power analyzer is used for acquiring a current signal and a voltage signal of the superconducting magnet with the working voltage of more than 42V under an alternating current working condition at a fixed sampling rate, further obtaining the alternating current loss of the superconducting magnet with the working voltage of more than 42V, and uploading the alternating current loss to an upper computer;
the upper computer is used for respectively controlling the start and stop of the phase-locked amplifier, the data acquisition unit and the power analyzer; after receiving the current effective value and the resistive voltage uploaded by the phase-locked amplifier, calculating and displaying the alternating current loss of the superconducting tape based on the current effective value and the resistive voltage; after receiving the current signal and the voltage signal uploaded by the data acquisition unit, calculating and displaying the alternating current loss of the superconducting magnet with the working voltage between 0 and 42V based on the current signal and the voltage signal; and when the alternating current loss of the superconducting magnet with the working voltage larger than 42V uploaded by the power analyzer is received, the alternating current loss is directly displayed.
Further preferably, the upper computer comprises: the device comprises a first driving module, a first calculating module, a second driving module, a second calculating module, a third driving module and a display module;
the output end of the first driving module is connected with the phase-locked amplifier and used for controlling the start and stop of the phase-locked amplifier;
the input end of the first calculation module is connected with the phase-locked amplifier and used for receiving the current effective value and the resistive voltage uploaded by the phase-locked amplifier and calculating the alternating current loss of the superconducting tape based on the current effective value and the resistive voltage;
the output end of the second driving module is connected with the data acquisition unit and used for controlling the start and stop of the data acquisition unit;
the input end of the second calculation module is connected with the data collector and is used for receiving the current signal and the voltage signal uploaded by the data collector and calculating the alternating current loss of the superconducting magnet with the working voltage between 0 and 42V based on the current signal and the voltage signal;
the output end of the third driving module is connected with the power analyzer and used for controlling the start and stop of the power analyzer;
the display module is respectively connected with the first calculation module, the second calculation module and the output end of the power analyzer and is used for displaying the alternating current loss of the superconductor to be detected.
Further preferably, the upper computer is a LabVIEW upper computer.
Further preferably, the communication terminal of the lock-in amplifier is connected to the upper computer through a GPIB or RS-232 communication line.
Further preferably, the communication end of the data acquisition unit is connected with the upper computer through an MXI-Express cable.
Further preferably, the LAN interface of the power analyzer is connected with the upper computer through a network cable, or the D-sub9 pin connector of the power analyzer is connected with the upper computer through an RS-232C cable.
Further preferably, the lock-in amplifier comprises two BNC cables, which are respectively used for inputting the reference signal and the signal to be measured of the lock-in amplifier; the reference signal is a current signal of the superconducting tape, and the signal to be measured is a voltage signal of the superconducting tape.
Further preferably, the data collector comprises two twisted-pair insulated copper wires for inputting a current signal and a voltage signal of the superconducting magnet with an operating voltage between 0 and 42V, respectively.
Further preferably, the power analyzer comprises: a BNC cable and a pair of L1000 voltage lines; the BNC cable is used for inputting a current signal of the superconducting magnet with the working voltage larger than 42V; the L1000 voltage line is used for inputting a voltage signal of the superconducting magnet with the working voltage larger than 42V.
Generally, through the utility model discloses above technical scheme who conceives can gain following beneficial effect:
1. the utility model provides a measure superconductor alternating current loss's integrated system, the phase-locked amplifier who will be applicable to superconductor signal acquisition under the different operating voltage respectively, data collection station and power analysis appearance integration are assembled together, and carry out on-line control to each measuring instrument through the host computer, and handle the data that each measuring instrument gathered, can realize the alternating current loss measurement of superconductor under the different operating voltage with higher measurement accuracy, be an integrated measurement system who collects superconductive strip and superconducting magnet alternating current loss measurement function in an organic whole, alternating current loss measuring object and voltage range have been expanded.
2. The utility model provides an among the integrated system of measurement superconductor alternating current loss, carry out corresponding control to lock-in amplifier, data collection station and power analyzer respectively through LabVIEW to data to gathering are handled, have realized the superconductor alternating current loss's under the different operating voltage on-line measurement, the utility model provides a good human-computer interaction interface, control is convenient nimble more, and scalability is stronger, and degree of automation is also higher.
Drawings
Fig. 1 is a schematic structural diagram of an integrated system for measuring ac loss of a superconductor according to the present invention;
fig. 2 is a schematic structural diagram of an integrated system for measuring ac loss of a superconductor according to an alternative embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
In order to achieve the above object, the present invention provides an integrated system for measuring ac loss of a superconductor, as shown in fig. 1, comprising: the device comprises a phase-locked amplifier 1, a data acquisition unit 2, a power analyzer 3 and an upper computer 4; the lock-in amplifier 1, the data acquisition unit 2 and the power analyzer 3 are all connected with the upper computer 4; preferably, the communication end of the phase-locked amplifier is connected with the upper computer through a GPIB or RS-232 communication line; the communication end of the data acquisition unit is connected with the upper computer through an MXI-Express cable; the LAN interface of the power analyzer is connected with an upper computer through a network cable, or the D-sub9 pin connector of the power analyzer is connected with the upper computer through an RS-232C cable.
The type of the superconductor to be tested in the utility model is one or more of a superconducting tape, a superconducting magnet with the working voltage between 0 and 42V and a superconducting magnet with the working voltage more than 42V;
the phase-locked amplifier 1 is used for acquiring a current signal and a voltage signal of the superconducting tape under an alternating current working condition, further acquiring a current effective value and a resistive voltage of the superconducting tape, and uploading the current effective value and the resistive voltage to the upper computer 4; preferably, the lock-in amplifier comprises two BNC cables for inputting the reference signal and the signal to be measured of the lock-in amplifier respectively; the reference signal is a current signal of the superconducting tape, and the signal to be measured is a voltage signal of the superconducting tape.
The data acquisition unit 2 is used for acquiring a current signal and a voltage signal of the superconducting magnet with the working voltage of 0-42V under an alternating current working condition at a fixed sampling rate and uploading the current signal and the voltage signal to the upper computer 4; preferably, the data collector comprises two twisted-pair insulated copper wires for inputting a current signal and a voltage signal of the measured superconductor respectively.
The power analyzer 3 is used for acquiring a current signal and a voltage signal of the superconducting magnet with the working voltage of more than 42V under an alternating current working condition at a fixed sampling rate, further obtaining active power, namely alternating current loss, of the superconducting magnet with the working voltage of more than 42V, and uploading the active power, namely the alternating current loss, to the upper computer 4; preferably, the power analyzer comprises: a BNC cable and a pair of L1000 voltage lines; the BNC cable is used for inputting a current signal of the measured superconductor; the L1000 voltage line is used for inputting a voltage signal of the measured superconductor.
The upper computer 4 is used for respectively controlling the start and stop of the phase-locked amplifier 1, the data acquisition unit 2 and the power analyzer 3 according to the type of the superconductor to be detected; after receiving the current effective value and the resistive voltage uploaded by the phase-locked amplifier 1, calculating and displaying the alternating current loss of the superconducting tape based on the current effective value and the resistive voltage; after receiving the current signal and the voltage signal uploaded by the data collector 2, calculating and obtaining the alternating current loss of the superconducting magnet with the working voltage between 0 and 42V based on the current signal and the voltage signal, and displaying the alternating current loss; and when the alternating current loss of the superconducting magnet with the working voltage larger than 42V uploaded by the power analyzer 3 is received, the alternating current loss is directly displayed. Specifically, when the phase-locked amplifier is connected with a current signal and a voltage signal of the superconducting tape, the upper computer drives the phase-locked amplifier to start working, and after a current effective value and a resistive voltage uploaded by the phase-locked amplifier are received, the alternating current loss of the superconducting tape is calculated and displayed on the basis of the current effective value and the resistive voltage. When the data collector is connected with a current signal and a voltage signal of the superconducting magnet with the working voltage of 0-42V, the upper computer drives the data collector to start working, and after the current signal and the voltage signal uploaded by the data collector are received, the alternating current loss of the measured superconducting magnet is calculated and displayed on the basis of the current signal and the voltage signal. When the power analyzer is connected with a current signal and a voltage signal of the superconducting magnet with the working voltage larger than 42V, the upper computer drives the power analyzer to start working, and after the alternating current loss uploaded by the power analyzer is received, the alternating current loss is directly displayed.
Preferably, as shown in fig. 2, in an alternative embodiment, the upper computer includes: a first driving module 41, a first calculating module 42, a second driving module 43, a second calculating module 44, a third driving module 45 and a display module 46;
the output end of the first driving module 41 is connected to the lock-in amplifier 1 and is used for controlling the start and stop of the lock-in amplifier 1;
the input end of the first calculating module 42 is connected to the lock-in amplifier 1, and is configured to receive the current effective value and the resistive voltage uploaded by the lock-in amplifier 1, and calculate an ac loss of the superconducting tape based on the current effective value and the resistive voltage; specifically, the method for calculating the ac loss by the first calculating module 42 may adopt any one existing method, which is not limited herein, such as: the ac loss of the superconductor measured can be obtained by multiplying the effective value of the current and the resistive voltage by referring to the method disclosed in the study on the ac loss characteristics of the high-temperature superconducting YBCO strip, coil and magnet (author: wangzhuang, open time: 2017).
The output end of the second driving module 43 is connected with the data collector 2 and is used for controlling the start and stop of the data collector 2;
the input end of the second calculation module 44 is connected to the data collector 2, and is configured to receive the current signal and the voltage signal uploaded by the data collector 2, and calculate, based on the current signal and the voltage signal, an ac loss of the superconducting magnet with a working voltage between 0V and 42V; specifically, the method for calculating the ac loss by the second calculation module 44 may adopt any one existing method, which is not limited herein, for example: the AC loss can be obtained by performing power integration calculation on the current signal and the voltage signal based on the current signal and the voltage signal acquired by the data acquisition unit in real time by referring to a method disclosed in theoretical analysis and experimental measurement of the AC loss of the high-temperature superconducting strip (author: morning, open time: 2016).
The output end of the third driving module 45 is connected with the power analyzer and is used for controlling the start and stop of the power analyzer 3;
the display module 46 is respectively connected to the first calculating module 42, the second calculating module 44 and the output end of the power analyzer 3, and is configured to display the ac loss of the superconductor to be measured.
Preferably, the upper computer is a LabVIEW upper computer, and at this time, the first driving module 41, the first calculating module 42, the second driving module 43, the second calculating module 44 and the third driving module 45 are software modules based on a LabVIEW platform; the display module 46 is a LabVIEW display interface, and in an optional interface, start/stop control keys of a lock-in amplifier, a data collector and a power analyzer, and ac loss display charts of different types of superconductors are integrated. It should be noted that LabVIEW is a graphical programming language, includes a large number of controls, tools and functions, is used for operations such as data acquisition, analysis, display and storage, and can acquire analog signals output by respective sensors by using data acquisition equipment, and can analyze and process the acquired signals, and is commonly used in the technical field of measurement and control, and a person skilled in the art can implement the operations, and details are not described herein.
The present invention will be described in detail below with reference to three specific examples.
Example 1 is a process in which an upper computer controls a phase-locked amplifier on line through LabVIEW software to measure the AC loss of the superconducting tape. In this example, ac loss of a high-temperature superconducting tape having a length of 50cm under a sinusoidal current (50 Hz) having a current amplitude of 30A was measured, the superconducting tape was immersed in liquid nitrogen for cooling, and a critical current of a free field at 77K was 106A; after the superconducting tape is connected with the phase-locked amplifier, a signal generator and a bipolar power supply are adopted to supply sinusoidal alternating current with the amplitude of 30A to the superconducting tape; at this time, the operation of the integrated system for measuring the ac loss of the superconductor is as follows:
a first driving module in the upper computer drives the phase-locked amplifier to start working; in the process, the name of the communication interface and the type of the input source are selected, and parameters of serial configuration are set;
the method comprises the steps that a phase-locked amplifier starts to collect current signals and voltage signals of the superconducting tapes, the current signals of the superconducting tapes are input into the phase-locked amplifier through a reference signal input interface of the phase-locked amplifier, the voltage signals of the superconducting tapes are input into the phase-locked amplifier through a signal input interface to be detected of the phase-locked amplifier, the voltage signals are processed by the phase-locked amplifier to obtain current effective values and resistive voltages of the superconducting tapes, and the current effective values and the resistive voltages are uploaded to an RAM cache area of an upper computer;
a first calculation module in the upper computer calculates the alternating current loss of the superconducting tape in real time based on the current effective value and the resistive voltage;
in the process, the effective value of the voltage of the superconducting strip is 0.993mV, the effective value of the inductive voltage is 0.992mV, the effective value of the resistive voltage is 0.0194mV, the phase angle is 88.88 degrees, the effective value of the current is 21.2A, and the measured alternating current loss of the superconducting strip under the sinusoidal current with the amplitude of 30A is 0.411mW.
a second driving module in the upper computer drives the data acquisition unit to start working; in the process, names of data storage files are named, the sampling rate and the sampling number of each channel of a data collector are set, the maximum value and the minimum value of voltage allowed to be measured are set, the current frequency of the superconducting magnet is input, and access channels of current signals and voltage signals are selected; in this embodiment, the current frequency is set to "50Hz"; the sampling rate setting and the sampling number of each channel are both set to be 5000, namely 100 data points are collected in each current period; the maximum value and the minimum value of the sampling voltage are set to be the maximum range which can be measured by a PXIe-4305 acquisition board card, namely +/-42V; the channel selection selects the channel 0 and the channel 1 of the PXIe-4305 acquisition board card, namely the access channel of the current signal and the voltage signal of the superconducting magnet;
the data acquisition unit starts to acquire current signals and voltage signals of the superconducting magnet at a fixed sampling rate, stores the acquired current signals and voltage signals into an FIFO (first in first out) cache region of the data acquisition unit and uploads the current signals and voltage signals to an RAM (random access memory) cache region of an upper computer;
a second calculation module in the upper computer calculates and obtains the alternating current loss of the superconducting magnet with the working voltage between 0 and 42V based on the current signal and the voltage signal;
in the process, the current signal of the superconducting magnet is a sinusoidal current with the amplitude of 3A, the voltage signal is a sinusoidal voltage with the amplitude of 1.96V, the loss curve of the superconducting magnet in each current period is approximately a straight line (the minimum value is about 0.938W, and the maximum value is about 0.948W), and the measured alternating current loss of the superconducting magnet in 1s time is 0.942W.
Example 3 is a process in which the upper computer measures the ac loss of the superconducting magnet with the operating voltage greater than 42V by using the LabVIEW software to control the power analyzer on line. In the embodiment, the alternating current loss of the superconducting magnet under the sinusoidal current (50 Hz) with the current amplitude of 54A is measured, and the superconducting magnet is immersed and cooled by liquid nitrogen; connecting a current signal of the superconducting magnet to a current signal access port of the power analyzer Ch1, connecting a voltage signal of the superconducting magnet to a voltage signal access port of the power analyzer Ch1, and selecting an input-output ratio of the corresponding current sensor on a setting interface of the power analyzer according to the input-output ratio/model of the current sensor; a signal generator and a bipolar power supply are used to supply a sinusoidal alternating current of amplitude to superconducting magnet 54A; at this time, the operation of the integrated system for measuring the ac loss of the superconductor is as follows:
a third driving module in the upper computer drives and controls the power analyzer to start working; in the process, a communication mode (LAN connection or RS-232C connection) is selected, then the measurement ranges of current and voltage access channels are set, and finally the electrical parameters (including the AC loss of the superconducting magnet) displayed by a waveform chart are selected; in this embodiment, the initial parameters of the power analyzer are set as: comType selects "TCP-IP" (fiber communication); the Address is set as the communication Address of the power analyzer: 192.168.1.1; the Ch1 channel of the Volt part is opened with Auto (automatic range), and the Ch1 channel of the Curr part is opened with Auto (automatic range); mode is selected as TYPE1 (single-phase two-wire Mode); item part Ch is selected entirely as channel 1, graph 1 as Upk + (voltage amplitude), graph 2 as Ipk + (current amplitude), graph 3 as f (current frequency), graph4 as Irms (current effective value), graph 5 as Urms (voltage effective value), graph 6 as P (active power, i.e. AC loss value)
The power analyzer collects current signals and voltage signals of the superconducting magnet under an alternating current working condition, further obtains alternating current loss of the superconducting magnet, and uploads the alternating current loss to an upper computer; the resulting superconducting magnet has an ac loss of around 7W at a sinusoidal alternating current of 54A amplitude.
It should be noted that example 1, example 2, and example 3 may be performed separately or simultaneously, and are not limited.
According to embodiment 1-3, the utility model provides a measure superconductor alternating current loss's integrated system integration has assembled superconductor alternating current loss measurement platform's hardware part to realized the online control of host computer to each hardware part through LabVIEW software, be one collection superconducting tape and superconducting magnet's alternating current loss measurement function in an organic whole comprehensive software and hardware platform, not only realized superconductor alternating current loss's on-line measurement, still greatly expanded alternating current loss measurement's object and voltage range. Specifically, the upper computer is firstly connected with each measuring instrument through a data communication line, and based on LabVIEW software, the phase-locked amplifier, the data collector and the power analyzer are controlled on line to collect current signals and voltage signals of the superconductor according to driving programs of each measuring instrument, and calculated and measured data are transmitted to the upper computer in real time to carry out real-time calculation and on-line display of alternating current loss. The utility model provides an integrated system is degree of automation not only higher, can also realize the on-line measuring of alternating current loss to compare with traditional measuring platform, this integrated measuring platform's measuring object and scope are wider.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An integrated system for measuring the ac loss of a superconductor, comprising: the device comprises a phase-locked amplifier, a data acquisition unit, a power analyzer and an upper computer; the phase-locked amplifier, the data acquisition unit and the power analyzer are all connected with the upper computer;
the type of the superconductor to be tested is one or more of a superconducting tape, a superconducting magnet with the working voltage between 0 and 42V and a superconducting magnet with the working voltage more than 42V;
the phase-locked amplifier is used for acquiring a current signal and a voltage signal of the superconducting tape under an alternating-current working condition, further acquiring a current effective value and a resistive voltage of the superconducting tape, and uploading the current effective value and the resistive voltage to the upper computer;
the data collector is used for collecting a current signal and a voltage signal of the superconducting magnet with the working voltage of 0-42V under an alternating current working condition at a fixed sampling rate and uploading the current signal and the voltage signal to the upper computer;
the power analyzer is used for acquiring a current signal and a voltage signal of the superconducting magnet with the working voltage of more than 42V under an alternating current working condition at a fixed sampling rate, further obtaining the alternating current loss of the superconducting magnet with the working voltage of more than 42V, and uploading the alternating current loss to the upper computer;
the upper computer is used for respectively controlling the start and stop of the phase-locked amplifier, the data acquisition unit and the power analyzer; after receiving the current effective value and the resistive voltage uploaded by the phase-locked amplifier, calculating and displaying the alternating current loss of the superconducting tape based on the current effective value and the resistive voltage; after receiving the current signal and the voltage signal uploaded by the data acquisition unit, calculating and displaying the alternating current loss of the superconducting magnet with the working voltage between 0 and 42V based on the current signal and the voltage signal; and when the alternating current loss of the superconducting magnet with the working voltage larger than 42V uploaded by the power analyzer is received, the power analyzer directly displays the alternating current loss.
2. The integrated system of claim 1, wherein the host computer comprises: the device comprises a first driving module, a first calculating module, a second driving module, a second calculating module, a third driving module and a display module;
the output end of the first driving module is connected with the phase-locked amplifier and used for controlling the start and stop of the phase-locked amplifier;
the input end of the first calculation module is connected with the phase-locked amplifier and used for receiving the current effective value and the resistive voltage uploaded by the phase-locked amplifier and calculating the alternating current loss of the superconducting tape based on the current effective value and the resistive voltage;
the output end of the second driving module is connected with the data acquisition unit and used for controlling the start and stop of the data acquisition unit;
the input end of the second calculation module is connected with the data collector and is used for receiving the current signal and the voltage signal uploaded by the data collector and calculating the alternating current loss of the superconducting magnet with the working voltage between 0 and 42V based on the current signal and the voltage signal;
the output end of the third driving module is connected with the power analyzer and used for controlling the start and stop of the power analyzer;
the display module is respectively connected with the first calculation module, the second calculation module and the output end of the power analyzer and is used for displaying the alternating current loss of the superconductor to be detected.
3. The integrated system of claim 1, wherein the communication port of the lock-in amplifier is connected to the host computer via a GPIB or RS-232 communication line.
4. The integrated system of claim 1, wherein the communication end of the data collector is connected to the upper computer through an MXI-Express cable.
5. The integrated system of claim 1, wherein the LAN interface of the power analyzer is connected to the host computer through a network cable, or the D-sub9 pin connector of the power analyzer is connected to the host computer through an RS-232C cable.
6. The integrated system according to claim 1, wherein said lock-in amplifier comprises two BNC cables for inputting a reference signal and a signal under test of said lock-in amplifier, respectively; the reference signal is a current signal of the superconducting tape, and the signal to be measured is a voltage signal of the superconducting tape.
7. The integrated system according to claim 1, wherein the data collector comprises two twisted pair insulated copper wires for inputting a current signal and a voltage signal of the superconducting magnet having an operating voltage between 0 and 42V, respectively.
8. The integrated system of claim 1, wherein the power analyzer comprises: a BNC cable and a pair of L1000 voltage lines;
the BNC cable is used for inputting a current signal of the superconducting magnet with the working voltage larger than 42V; the L1000 voltage line is used for inputting a voltage signal of the superconducting magnet with the working voltage larger than 42V.
9. The integrated system of any of claims 1-8, wherein the upper computer is a LabVIEW upper computer.
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