CN108322031A - A kind of system and method in three-phase alternating current adjustable signal source - Google Patents
A kind of system and method in three-phase alternating current adjustable signal source Download PDFInfo
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- CN108322031A CN108322031A CN201810108506.2A CN201810108506A CN108322031A CN 108322031 A CN108322031 A CN 108322031A CN 201810108506 A CN201810108506 A CN 201810108506A CN 108322031 A CN108322031 A CN 108322031A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The present invention relates to a kind of system and methods in adjustable three-phase ac signal source, solve the problems, such as that signal source output voltage current control is inaccurate in the prior art, a kind of system in three-phase alternating current adjustable signal source, including MCU control unit, SIN wave conditioning units, power supply unit, D class power amplification units, boosting up-flow unit, relay output unit, relay expanding element, protection module, three-phase voltage current sampling unit, 485 communication failure analogue unit of multichannel, communication unit, synchronization signal unit, the exportable three-phase voltage source of the signal source system, three-phase current source, and voltage and current size, phase and frequency are adjustable, output signal has the disconnected phase of electric current and short-circuit function, electric sampling open-phase and each phase phase zero handoff functionality, it can realize accurately controlling for output current voltage.
Description
Technical field
The present invention relates to a kind of signal source domain, the system more particularly, to a kind of adjustable three-phase ac signal source and side
Method.
Background technology
For signal source as a kind of time-honored measuring instrument, signal source is indispensable in various tests and experimentation
Tool, in fields such as communication, measurement, control, teaching using very extensive.Whether in production, scientific research or teaching, city
The big price of the conventional general volume in three-phase ac signal source is high on face, is just not suitable in special specific occasion, at some
Under specific occasion, the present invention devises a kind of system and method in adjustable three-phase ac signal source.
Invention content
The present invention mainly solves the problems, such as that signal source output voltage current control is inaccurate in the prior art, provides one
Kind accurately controls the system and method in the three-phase alternating current adjustable signal source of output voltage electric current.
The above-mentioned technical problem of the present invention is mainly to be addressed by following technical proposals：A kind of three-phase alternating current is adjustable
The system of signal source, including MCU control unit, SIN waves conditioning unit, power supply unit, D classes power amplification unit, boosting up-flow
Unit, relay output unit, relay expanding element, protection module, three-phase voltage current sampling unit, multichannel 485 communicate
Fault simulation unit, synchronization signal unit, the power supply unit, MCU control unit, SIN waves conditioning unit, D class power amplifications
Unit, boosting up-flow unit, relay output unit, relay expanding element are sequentially connected, the protection module, three-phase voltage
Current sampling unit, 485 communication failure analogue unit of multichannel, synchronization signal unit are connected with MCU control unit respectively, extension after
Electric appliance unit can export one group of three-phase voltage source simultaneously, realize that a signal source can access multigroup equipment, 485 failure mould of multichannel
Quasi-simple member is to introduce the AB lines of multichannel RS485 to realize the functions such as error connection and short circuit by the switching of internal relay circuit,
Signal source system includes multigroup 485 communication failure analogue unit, it can be achieved that the failures such as 485 error connections, short circuit, synchronization signal unit
Synchronizing signal, the voltage current phase for exporting own signal source when other equipment receives signal are sent out by a wherein equipment
Synchronous with the signal source that main equipment is sent out, power supply unit is to provide power supply to MCU control unit, and SIN wave conditioning units control MCU
Unit processed exports discrete digital sinusoidal signal and is converted to analog signal by DA chips, is AC signal ability by amplifier conditioning
The input signal of power amplifier chips is can be used as, D class power amplification units are controlled by the signal of above-mentioned SIN wave conditioning units generation
IR2092S processed modulates copped wave to export High ireguency SPWM, is AC sine by the ± 36V DC voltage copped waves provided by power supply unit
Wave, then via inductance capacitor filtering after, be available to boosting up-flow unit, boosting up-flow unit is 3 groups of duplex frequency boostering transformers
With rising current transformer form, be by the above-mentioned amplified power supply of D classes power amplifier carry out boosting and up-flow be re-used as signal output, relay
Device control output unit is will to boost the transformed signal of up-flow unit by relay realization voltage cutout, commutation, and electric current is short
Road, equal function of breaking, relay control signal are sent out by MCU Main Processing Unit and are driven again by driving chip after light-coupled isolation
The actuating of relay.
As a preferred embodiment, the protection module includes that output voltage short-circuit protection unit, over-voltage and over-current be not short-circuit
Protection location, output circuit open-circuit-protection unit, the output voltage short-circuit protection unit, over-voltage and over-current short-circuit protection unit,
Output circuit open-circuit-protection unit is connected with MCU control unit respectively, and the protection module is for protecting in voltage short circuit, pressing through excessively
Signal source energy trouble free service when flow short-circuit, output circuit open circuit, can prevent mistake caused by abnormal conditions from causing pair
The damage of machine makes the relatively reliable stabilization of equipment.
As a preferred embodiment, further include being provided with monitoring alarm module, the monitoring alarm module is controlled with logical MCU
Unit is connected.
As a preferred embodiment, the monitoring alarm module includes monitoring unit, alarm unit, communication unit, backstage
Cloud system unit, the monitoring unit, alarm unit, communication unit, backstage cloud system unit are sequentially connected, monitoring unit
Backstage cloud system unit can be connected after outer access network based on ethernet and carries out on line real-time monitoring, if there is exception that can pass through audible alarm
Unit carries out audible alarm, and audible alarm unit can be buzzer.
As a preferred embodiment, further include ether net unit, two road RS485 units all the way, the Ethernet list all the way
Member, two road RS485 units are connected with communication unit respectively, which includes two group of 485 communication unit and one group of ether
Net unit, it can be achieved that data transmission realizes data monitoring and control to PC machine background system, while also can 485 communication port realize
Parameter query and output control.
A kind of method in three-phase alternating current adjustable signal source, includes the following steps：
S1.MCU is initialized and is sampled after the power is turned on；
S2. each sampling unit acquires corresponding data and upload the data to MCU control unit, and MCU control unit is put with D class power
Power supply unit DC voltage is changed into AC sine wave by big unit cooperation, supply boosting up-flow unit after filtering；
S3. boosting up-flow unit power boost is flowed up after as signal export, and by relay come realize voltage short circuit, change
Equal function.
As a preferred embodiment, S2 includes the following steps：
S21. three-phase voltage current sampling unit is to convert the voltage and current of output to voltage letter by voltage-current sensor
Number, then the input signal for making the voltage of sampling can be used as Chip Microcomputer A/D is amplified by the conditioning of amplifier；
S22. MCU control unit is exported discrete digital sinusoidal signal and is converted to simulation by DA chips by SIN waves conditioning unit
Signal is the input signal that AC signal just can be used as power amplifier chips by amplifier conditioning；
S23. to be the signal that is generated by above-mentioned SIN wave conditioning units export D classes power amplification unit to control IR2092S
High ireguency SPWM modulates copped wave, is AC sine wave by the ± 36V DC voltage copped waves provided by power supply unit, then via inductance electricity
After capacitor filter, it is available to boosting up-flow unit.
As a preferred embodiment, S3 includes the following steps：
S31. the amplified power supply of D class power amplifiers is carried out boosting by boosting up-flow unit and up-flow is re-used as signal output；
S32. relay control output unit be will boost the transformed signal of up-flow unit by relay realize voltage break
Road, commutation, short circuit current, equal function of breaking；
S33. extension relay unit will boost the transformed signal of up-flow unit draw again one group as extension relay
Input is by relay control output and closes.
Therefore, it is an advantage of the invention that：The exportable three-phase voltage source of the signal source system, three-phase current source, and voltage
Size of current, phase and frequency are adjustable, and output signal has the disconnected phase of electric current and short-circuit function, electric sampling open-phase and the switching of each phase phase zero
Function can realize accurately controlling for output current voltage.
Description of the drawings
Attached drawing 1 is a kind of structure frame figure of present system；
1. two road RS485 units, 2. 1 road ether net unit, 3. power supply unit
The up-flow unit 4. 5. D classes power amplification unit 6. of SIN waves conditioning unit boosts
7. 8. relay expanding element of relay output unit, 9. monitoring unit
10. 11. multichannel of three-phase voltage current sampling unit, 485 communication failure analogue unit
12. 13. over-voltage and over-current of output voltage short-circuit protection unit not short-circuit protection unit
14. 15. backstage cloud system unit of output circuit open-circuit-protection unit
16. 17. alarm unit of communication unit, 18. synchronization signal unit
19. 20. MCU control unit of communication unit, 21. protection module.
Specific implementation mode
A kind of system in three-phase alternating current adjustable signal of the present embodiment source includes MCU control unit 20, SIN waves as shown in Figure 1
Conditioning unit 4, power supply unit 3, D classes power amplification unit 5, boosting up-flow unit 6, relay output unit 7, relay extension
Unit 8, protection module 21, three-phase voltage current sampling unit 10,485 communication failure analogue unit 11 of multichannel, synchronizing signal list
Member 18, the power supply unit, MCU control unit, SIN waves conditioning unit, D classes power amplification unit, boosting up-flow unit, relay
Device output unit, relay expanding element are sequentially connected, and the protection module, three-phase voltage current sampling unit, multichannel 485 are logical
Letter fault simulation unit, synchronization signal unit are connected with MCU control unit respectively, and extension relay unit can export one group simultaneously
Three-phase voltage source realizes that a signal source can access multigroup equipment, and 485 fault simulation unit of multichannel is by multichannel RS485
AB lines introduce by internal relay circuit switching realize the functions such as error connection and short circuit, signal source system include multigroup 485
Communication failure analogue unit is, it can be achieved that the failures such as 485 error connections, short circuit, synchronization signal unit are sent out together by a wherein equipment
Signal is walked, the signal source for sending out the voltage current phase that own signal source exports with main equipment when other equipment receives signal
Synchronous, power supply unit is to provide power supply to MCU control unit, and MCU control unit is exported discrete number by SIN waves conditioning unit
Sinusoidal signal is converted to analog signal by DA chips, is the input that AC signal just can be used as power amplifier chips by amplifier conditioning
Signal, D class power amplification units are the signals that are generated by above-mentioned SIN wave conditioning units exports high frequency to control IR2092S
SPWM modulates copped wave, is AC sine wave by the ± 36V DC voltage copped waves provided by power supply unit, then filtered via inductance capacitance
After wave, it is available to boosting up-flow unit, boosting up-flow unit is 3 groups of duplex frequency boostering transformers and rising current transformer composition, is
By the above-mentioned amplified power supply of D classes power amplifier carry out boosting and up-flow be re-used as signal output, relay control output unit be by
The transformed signal of up-flow unit that boosts realizes voltage cutout, commutation, short circuit current, equal function of breaking, relay by relay
Device control signal is sent out by MCU Main Processing Unit drives the actuating of relay by driving chip again after light-coupled isolation.
Further include ether net unit 2, two road RS485 units 1 all the way, ether net unit, two road RS485 units difference all the way
It is connected with communication unit, which includes two group of 485 communication unit and one group of ether net unit, it can be achieved that data transmission
Data monitoring and control are realized to PC machine background system, while also can 485 communication port realization parameter query and output control.
Protection module includes output voltage short-circuit protection unit 12, over-voltage and over-current not short-circuit protection unit 13, output circuit
Open-circuit-protection unit 14, output voltage short-circuit protection unit, over-voltage and over-current short-circuit protection unit, output circuit open-circuit-protection unit
It is connected respectively with MCU control unit, the protection module is for protecting in voltage short circuit, over-voltage and over-current short circuit, output circuit open circuit
When signal source energy trouble free service, mistake can be prevented to cause the damage to machine caused by abnormal conditions, make equipment more
Add reliable and stable.
Further include being provided with monitoring alarm module 22, monitoring alarm module is connected with communication unit, monitoring alarm module packet
Include monitoring unit 9, alarm unit 17, communication unit 16, backstage cloud system unit 15, monitoring unit, alarm unit, communication unit
Member, backstage cloud system unit are sequentially connected, and can connect backstage cloud system unit after the outer access network based on ethernet of monitoring unit carries out
On line real-time monitoring, if there is exception that can carry out audible alarm by audible alarm unit, audible alarm unit can be buzzer.
A kind of method in three-phase alternating current adjustable signal source, includes the following steps：
S1.MCU is initialized and is sampled after the power is turned on；
S2. each sampling unit acquires corresponding data and upload the data to MCU control unit, and MCU control unit is put with D class power
Power supply unit DC voltage is changed into AC sine wave by big unit cooperation, supply boosting up-flow unit after filtering；
S3. boosting up-flow unit power boost is flowed up after as signal export, and by relay come realize voltage short circuit, change
Equal function.
S2 includes the following steps：
S21. three-phase voltage current sampling unit is to convert the voltage and current of output to voltage letter by voltage-current sensor
Number, then the input signal for making the voltage of sampling can be used as Chip Microcomputer A/D is amplified by the conditioning of amplifier；
S22. MCU control unit is exported discrete digital sinusoidal signal and is converted to simulation by DA chips by SIN waves conditioning unit
Signal is the input signal that AC signal just can be used as power amplifier chips by amplifier conditioning；
S23. to be the signal that is generated by above-mentioned SIN wave conditioning units export D classes power amplification unit to control IR2092S
High ireguency SPWM modulates copped wave, is AC sine wave by the ± 36V DC voltage copped waves provided by power supply unit, then via inductance electricity
After capacitor filter, it is available to boosting up-flow unit.
S3 includes the following steps：
S31. the amplified power supply of D class power amplifiers is carried out boosting by boosting up-flow unit and up-flow is re-used as signal output；
S32. relay control output unit be will boost the transformed signal of up-flow unit by relay realize voltage break
Road, commutation, short circuit current, equal function of breaking；
S33. extension relay unit will boost the transformed signal of up-flow unit draw again one group as extension relay
Input is by relay control output and closes.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Although it is single that SIN waves conditioning unit, power supply unit, D classes power amplification unit, boosting up-flow is used more herein
The terms such as member, relay output unit, but it does not preclude the possibility of using other terms.The use of these items is only for
More easily describe and explain the essence of the present invention；It is construed as any one of the additional limitations all and is and spirit of that invention
It disagrees.
Claims (8)
1. a kind of system in three-phase alternating current adjustable signal source, including MCU control unit（20）, SIN wave conditioning units（4）, power supply
Unit（3）, D class power amplification units（5）, boosting up-flow unit（6）, relay output unit（7）, relay expanding element
（8）, protection module（21）, three-phase voltage current sampling unit（10）, 485 communication failure analogue unit of multichannel（11）, synchronous letter
Number unit（18）, the power supply unit, MCU control unit, SIN waves conditioning unit, D classes power amplification unit, boosting up-flow are single
Member, relay output unit, relay expanding element are sequentially connected, the protection module, three-phase voltage current sampling unit, more
485 communication failure analogue unit of road, synchronization signal unit are connected with MCU control unit respectively.
2. the system in a kind of three-phase alternating current adjustable signal source according to claim 1, it is characterized in that the protection module packet
Include output voltage short-circuit protection unit（12）, over-voltage and over-current not short-circuit protection unit（13）, output circuit open-circuit-protection unit
（14）, short-circuit protection unit, output circuit open-circuit-protection unit are not distinguished for the output voltage short-circuit protection unit, over-voltage and over-current
It is connected with MCU control unit.
3. the system in a kind of three-phase alternating current adjustable signal source according to claim 1 or 2, it is characterized in that further including being provided with
Monitoring alarm module（19）, the monitoring alarm module is connected with MCU control unit.
4. the system in a kind of three-phase alternating current adjustable signal source according to claim 3, it is characterized in that the monitoring alarm mould
Block includes monitoring unit（9）, alarm unit（17）, communication unit（16）, backstage cloud system unit（15）, the monitoring list
Member, alarm unit, communication unit, backstage cloud system unit are sequentially connected.
5. a kind of system in three-phase alternating current adjustable signal source according to claim 1, it is characterized in that further including ether all the way
Net unit（2）, two road RS485 units（1）, the net unit of ether all the way, two road RS485 units respectively with communication unit phase
Even.
6. a kind of method in three-phase alternating current adjustable signal source, using the system in any one of right 1-5, it is characterized in that include with
Lower step：
S1.MCU is initialized and is sampled after the power is turned on；
S2. each sampling unit acquires corresponding data and upload the data to MCU control unit, and MCU control unit is put with D class power
Power supply unit DC voltage is changed into AC sine wave by big unit cooperation, supply boosting up-flow unit after filtering；
S3. boosting up-flow unit power boost is flowed up after as signal export, and by relay come realize voltage short circuit, change
Equal function.
7. the method in a kind of three-phase alternating current adjustable signal source according to claim 1, it is characterized in that S2 includes the following steps：
S21. three-phase voltage current sampling unit is to convert the voltage and current of output to voltage letter by voltage-current sensor
Number, then the input signal for making the voltage of sampling can be used as Chip Microcomputer A/D is amplified by the conditioning of amplifier；
S22. MCU control unit is exported discrete digital sinusoidal signal and is converted to simulation by DA chips by SIN waves conditioning unit
Signal is the input signal that AC signal just can be used as power amplifier chips by amplifier conditioning；
S23. to be the signal that is generated by above-mentioned SIN wave conditioning units export D classes power amplification unit to control IR2092S
High ireguency SPWM modulates copped wave, is AC sine wave by the ± 36V DC voltage copped waves provided by power supply unit, then via inductance electricity
After capacitor filter, it is available to boosting up-flow unit.
8. the method in a kind of three-phase alternating current adjustable signal source according to claim 1, it is characterized in that S3 includes the following steps：
S31. the amplified power supply of D class power amplifiers is carried out boosting by boosting up-flow unit and up-flow is re-used as signal output；
S32. relay control output unit be will boost the transformed signal of up-flow unit by relay realize voltage break
Road, commutation, short circuit current, equal function of breaking；
S33. extension relay unit will boost the transformed signal of up-flow unit draw again one group as extension relay
Input is by relay control output and closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108506.2A CN108322031A (en) | 2018-02-02 | 2018-02-02 | A kind of system and method in three-phase alternating current adjustable signal source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108506.2A CN108322031A (en) | 2018-02-02 | 2018-02-02 | A kind of system and method in three-phase alternating current adjustable signal source |
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| Publication Number | Publication Date |
|---|---|
| CN108322031A true CN108322031A (en) | 2018-07-24 |
Family
ID=62903206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810108506.2A Pending CN108322031A (en) | 2018-02-02 | 2018-02-02 | A kind of system and method in three-phase alternating current adjustable signal source |
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| CN (1) | CN108322031A (en) |
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| CN110531127A (en) * | 2019-07-23 | 2019-12-03 | 深圳市嘉兆鸿电子有限公司 | Power source |
| CN111505440A (en) * | 2020-04-27 | 2020-08-07 | 云南拓普特种电源科技有限公司 | Ground fault detection and protection system and method based on class D power amplifier |
| CN113923126A (en) * | 2021-09-13 | 2022-01-11 | 国网浙江省电力有限公司湖州供电公司 | Four-way distribution network quality monitoring device and method thereof |
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