CN201639489U - Variable frequency power source experimental platform and monitoring system thereof - Google Patents
Variable frequency power source experimental platform and monitoring system thereof Download PDFInfo
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- CN201639489U CN201639489U CN2010201696239U CN201020169623U CN201639489U CN 201639489 U CN201639489 U CN 201639489U CN 2010201696239 U CN2010201696239 U CN 2010201696239U CN 201020169623 U CN201020169623 U CN 201020169623U CN 201639489 U CN201639489 U CN 201639489U
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Abstract
The utility model discloses a variable frequency power source experimental platform and a monitoring system thereof. The experimental platform comprises a variable frequency power source, a computer installed with the monitoring system, and an intelligent electric meter, wherein the computer is connected with the variable frequency power source and the intelligent electric meter by a communicating bus. The utility model adopts the computer technology, combines the strong computing processing capability of the computer and the measuring and controlling capabilities of hardware of an instrument together, realizes the computing, analysis, processing, display, printing and storage on data by software, leads the system function to far surpass the simple combination of common instruments, and can be well applicable to the field of scientific research and demonstration lessons, thus providing convenience for scientific researchers and college teachers and students to further master the knowledge of variable frequency power source.
Description
Technical field:
The utility model relates to appliance field, relates in particular to a kind of variable frequency power supply experiment porch and supervisory control system thereof.
Background technology:
Variable frequency power supply is with the AC → DC → AC conversion of the process of the alternating current in the civil power, is output as pure sine wave, and output frequency and voltage are adjustable within the specific limits.It is different from the variable frequency regulating speed control device of using with electric machine speed regulation, also is different from common alternating current steady voltage plug.The characteristics of desirable AC power are frequency stabilizations, voltage is stable, internal resistance equals zero, voltage waveform is pure sine wave (undistorted).Variable frequency power supply extremely approaches desirable AC power, therefore, advanced developed country is used as the standard power supply with variable frequency power supply more and more, so that for electrical appliance provides the best power supply environment, be convenient to the technical performance of objective examination electrical appliance, variable frequency power supply mainly contains two big kinds: linear amplification type and SPWM switching mode.
Current advanced in the world variable frequency power supply is to adopt IGBT inversion export technique; the high-performance precision voltage source that forms with advanced microprocessor controlling Design; it has protection and alarm failure Presentation Functions such as overcurrent, short circuit, overvoltage, under-voltage, overload, guarantees power consumption equipment and variable frequency power supply safety.It is strong to have workload-adaptability, the output waveform quality better, and good man computer interface, simple to operate, characteristics such as volume is little, and is in light weight.Sinewave output, the variable frequency power supply of adjustable output voltage and frequency provides needed alternating current for power consumption equipment.
Along with Chinese economic development, also more and more higher to the requirement of power-supply system in industrial production, scientific research and demonstration lesson field.As the variable frequency power supply of power-supply system important component part, the quality of its performance and the quality of quality are directly connected to the safe operation and the result of use of whole power-supply system.Modern variable frequency power supply doubly is popular with its low-power consumption, high efficiency, succinct circuit, but frequency-converting power supply function singleness of the prior art, relatively poor to operation of data, analysis, processing, demonstration, printing and storage effect, make some loss of vital data easily.
The utility model content:
The purpose of this utility model is to be used for remedying the deficiencies in the prior art, and a kind of variable frequency power supply experiment porch and supervisory control system thereof are provided.
To achieve these goals, the technical solution of the utility model is as follows:
Variable frequency power supply experiment porch and supervisory control system thereof, this experiment porch comprises variable frequency power supply, the computer that it also comprises intelligent electric meter and supervisory control system is installed, described computer connects variable frequency power supply and intelligent electric meter by communication bus.
Described variable frequency power supply comprises input switch, output switch, filter, frequency converter, harmonic shutter, output isolation transformer and controller, and input switch, filter, frequency converter, harmonic shutter, output isolation transformer and output switch are electrically connected successively, output switch electricity connects voltage modulator, and described output isolation transformer is electrically connected frequency converter.
Described computer is by the frequency converter of controller control connection variable frequency power supply.
Described input switch and output switch are air switch.
The utility model variable frequency power supply experiment porch and supervisory control system thereof have adopted computer technology, the measurement of computer strong calculation and processing ability and instrument hardware, control ability combines, realize operation of data by software, analyze, handle, show, print and storage, make the simple combination of systemic-function considerably beyond general instrument, particularly preserve in the result, the waveform storage, synchro measure, the extensibility of system, the separate unit instrument realizes that the superiority that aspect such as multiple function embodies is that traditional instrument is incomparable, can well be applicable to scientific research and demonstration lesson field, provide convenience for vast scientific research personnel and the teachers and students of colleges and universities further understand the knowledge of grasping the variable frequency power supply aspect.
Description of drawings:
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the utility model structured flowchart
Fig. 2 is the utility model variable frequency power supply structured flowchart
Embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1: variable frequency power supply experiment porch and supervisory control system thereof, this experiment porch comprises variable frequency power supply 100, the computer 200 and the online detection intelligent electric meter 300 of supervisory control system is installed, computer 200 control connection variable frequency power supplys 100, computer 200 is by the frequency converter 103 of controller 108 control connection variable frequency power supplys 100.
As shown in Figure 2: variable frequency power supply 100 comprises input switch 101, output switch 106, filter 102, frequency converter 103, harmonic shutter 104, output isolation transformer 105 and controller 108, and input switch 101, filter 102, frequency converter 103, harmonic shutter 104, output isolation transformer 105 and output switch 106 are electrically connected successively, output switch 106 electricity connect voltage modulator 107, output isolation transformer 105 is electrically connected frequency converter 103, input switch 101 and output switch 106 are air switch, controller 108 control connection frequency converters 103 also carry out control corresponding to it and operate, after frequency converter 103 is accepted control signal corresponding, carry out corresponding action, and its control signal conveyed to harmonic shutter 104 successively, output isolation transformer 105, output switch 106 and voltage modulator 107, output isolation transformer 105 is given frequency converter 103 with change in voltage and corresponding information feedback, and its change in voltage is carried out real time on-line monitoring, corresponding information is sent to controller 108, controller 108 carries out the information transmission by Industrial Ethernet and computer, operates accordingly.
It is strong that variable frequency power supply 100 has a workload-adaptability, the output waveform quality better, its output voltage is interchange 440V/60Hz by voltage modulator 107 modulation backs in the utility model, has good man computer interface, simple to operate, characteristics such as volume is little, and is in light weight, and with sinewave output, the variable frequency power supply of adjustable output voltage and frequency provides needed alternating current for power consumption equipment.
The monitoring software that supervisory control system on the computer 200 adopts is applied to the variable frequency power supply experiment porch, and PLC moves control program (ladder diagram) as field controller, is the bottom control layer; PC is as host computer, operation configuration software and finish programming to PLC, it can be used as monitoring and the configuration platform of slave computer PLC on the one hand, and its configuration software can be finished the data acquisition and the transmission of whole system on the other hand, realizes field apparatus is controlled.
The utility model experiment porch adopts Modbus field bus communication agreement, and S7-200PLC is as main station controller 108, and frequency converter 103, intelligent electric meter 300 are as slave station.The communication of supervisory control system connection has just been finished like this, the response that slave station frequency converter 103,300 of intelligent electric meters are responsible for the reception data and main station controller 108 is ordered, main station controller 108 is the data of addressable slave station frequency converter 103, intelligent electric meter 300 corresponding address, also can write data to slave station frequency converter 103, intelligent electric meter 300, finish specific function.The PLC of main station controller 108 reads parameters such as the input current, voltage, frequency of frequency converter 103 from frequency converter 103, read the parameters such as electric current, voltage, frequency, power factor (PF), harmonic wave, aberration rate of variable frequency power supply output from intelligent electric meter 300, computer 200 adopts the ethernet communication pattern to obtain the parameter that main station controller 108 reads from slave station frequency converter 103, intelligent electric meter 300 and shown, write down and preserve the man-machine interface of monitoring software by OPC Server server then.
Can realize Long-distance Control by this monitoring software, also various parameters can be set, see the instantaneous value of each parameter very intuitively by each interface energy on this monitoring software, gather the mass parameter of variable frequency power supply input and output electric current simultaneously, with the some of them data, for example output voltage etc. shows intuitively with the form of waveform, and with some parameters be stored in be convenient on the host computer inquiry, printing reports, this software can also be monitored variable frequency power supply output current quality simultaneously, in time reports to the police and the record trouble reason when variable frequency power supply breaks down.
The initial interface of this monitoring software is for supporting the MDI forms of many document process, and the MDI application program allows the user to show a plurality of documents simultaneously, and each document all is presented in its window.Document or child form are comprised in the Main form, and when Main form minimized, all document windows also were minimized, and the icon display of having only Main form is in taskbar.Mdi child form comprises: control interface, tendency chart, historical data, parameter setting, warning, printing.Wherein control and comprise input switch screen, frequency converter screen and three child forms of output switchboard in the drop-down menu of interface again.
Click corresponding menu option and enter each interface, in the control interface, three display screen simulations on the variable frequency power supply can be shown on host computer.The instantaneous value that on corresponding instrument interface on each control flow, can show each parameter.The tendency chart that on the tendency chart interface, can show each data, check the historical data of each corresponding data at the historical data interface energy, parameter is provided with each parameter that interface energy is provided with frequency converter, and the warning interface energy is monitored the running of variable frequency power supply in real time, prints the form that interface energy is printed related data.
The utility model variable frequency power supply experiment porch and supervisory control system thereof have adopted computer technology, the measurement of computer strong calculation and processing ability and instrument hardware, control ability combines, realize operation of data by software, analyze, handle, show, print and storage, make the simple combination of systemic-function considerably beyond general instrument, particularly preserve in the result, the waveform storage, synchro measure, the extensibility of system, the separate unit instrument realizes that the superiority that aspect such as multiple function embodies is that traditional instrument is incomparable, can well be applicable to scientific research and demonstration lesson field, provide convenience for vast scientific research personnel and the teachers and students of colleges and universities further understand the knowledge of grasping the variable frequency power supply aspect.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. variable frequency power supply experiment porch and supervisory control system thereof, this experiment porch comprises variable frequency power supply, it is characterized in that, the computer that it also comprises intelligent electric meter and supervisory control system is installed, described computer connects variable frequency power supply and intelligent electric meter by communication bus.
2. variable frequency power supply experiment porch according to claim 1 and supervisory control system thereof, it is characterized in that, described variable frequency power supply comprises input switch, output switch, filter, frequency converter, harmonic shutter, output isolation transformer, controller and voltage modulator, and input switch, filter, frequency converter, harmonic shutter, output isolation transformer and output switch are electrically connected successively, output switch electricity connects voltage modulator, and described output isolation transformer is electrically connected frequency converter.
3. variable frequency power supply experiment porch according to claim 1 and 2 and supervisory control system thereof is characterized in that, described computer is by the frequency converter of the real-time control connection variable frequency power supply of controller.
4. variable frequency power supply experiment porch according to claim 2 and supervisory control system thereof is characterized in that, described input switch and output switch are air switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201696239U CN201639489U (en) | 2010-04-23 | 2010-04-23 | Variable frequency power source experimental platform and monitoring system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010201696239U CN201639489U (en) | 2010-04-23 | 2010-04-23 | Variable frequency power source experimental platform and monitoring system thereof |
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| Publication Number | Publication Date |
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| CN201639489U true CN201639489U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201696239U Expired - Fee Related CN201639489U (en) | 2010-04-23 | 2010-04-23 | Variable frequency power source experimental platform and monitoring system thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345234A (en) * | 2014-10-24 | 2015-02-11 | 国网四川省电力公司电力科学研究院 | Harmonic power supply feature test system and method |
| CN106218414A (en) * | 2016-08-26 | 2016-12-14 | 北京公共交通控股（集团）有限公司 | The electric supply installation of the vehicle-mounted electrical equipment of trolleybus and method of supplying power to |
| CN106353697A (en) * | 2016-09-12 | 2017-01-25 | 江苏新航电气有限公司 | Feedback energy-saving variable-frequency power quality detection device and method |
-
2010
- 2010-04-23 CN CN2010201696239U patent/CN201639489U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345234A (en) * | 2014-10-24 | 2015-02-11 | 国网四川省电力公司电力科学研究院 | Harmonic power supply feature test system and method |
| CN104345234B (en) * | 2014-10-24 | 2017-04-26 | 国网四川省电力公司电力科学研究院 | Harmonic power supply feature test system and method |
| CN106218414A (en) * | 2016-08-26 | 2016-12-14 | 北京公共交通控股（集团）有限公司 | The electric supply installation of the vehicle-mounted electrical equipment of trolleybus and method of supplying power to |
| CN106353697A (en) * | 2016-09-12 | 2017-01-25 | 江苏新航电气有限公司 | Feedback energy-saving variable-frequency power quality detection device and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20110423 |