CN110297112A - A kind of program controled power source - Google Patents
A kind of program controled power source Download PDFInfo
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- CN110297112A CN110297112A CN201910560371.8A CN201910560371A CN110297112A CN 110297112 A CN110297112 A CN 110297112A CN 201910560371 A CN201910560371 A CN 201910560371A CN 110297112 A CN110297112 A CN 110297112A
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- 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
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Abstract
The invention discloses a kind of program controled power sources, comprising: synchronization unit: for providing synchronization signal for program-controlled power system；Control unit: including MCU controller, communication interface, sync cap unit and power source output interface unit, described control unit is used for the control centre of entire program controled power source work, realizes the adjusting control of the multi-parameters such as amplitude, frequency, waveform, phase；Power output unit: the digital signal that reception control unit is sent, and it is converted into associated analog signal, and specific frequency, amplitude, the voltage or current of waveform and phase are exported in the form of voltage source or current source.The program controled power source can be switched over according to different application demands.It is adjusted and phase-adjusted function in addition, the program controled power source has multiple waveforms output.
Description
Technical field
The present invention relates to power engineering field, in particular to a kind of program controled power source.
Background technique
Experiment power supply is the important component of high voltage electrical test, provides specific incentives according to high-potting specific requirement
Signal.Common high-voltage test electric power generally comprises constant AC voltage source, alternating constant current source, constant dc potential source, perseverance
Determine DC current source, impacts power supply and variable-frequency power sources.Wherein, alternating constant power supply is usually and is provided by alternating electromagnetic equipment
(transformer or motor), Constant Direct Current source are usually to be obtained by corresponding alternating current equipment rectifying and wave-filtering, and impact power supply is due to high pressure
Capacitive generator and related circuit composition, variable-frequency power sources obtain corresponding output generally by power electronic technique commutation inversion.
Excitation output of the existing experiment power supply as test circuit controls signal by external staff for bulk testing
Operation, from test principle and not formed real signal feedback control, the waveform of power frequency or the output of frequency-converter power source is one
As be sine wave, power supply wave shape and phase cannot adjust in real time with test requirements document, limit corresponding test data analyzer hand
Section.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of program controled power sources, solve existing power frequency or frequency-converter power source
The waveform of output is that generally sine wave, power supply wave shape and phase cannot be adjusted in real time with test requirements document, is limited corresponding
The problem of test data analyzer means.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is as follows:
A kind of program controled power source, including synchronization unit: described to synchronize list for providing synchronization signal for program-controlled power system
Member includes time service synchronization unit and external sync unit, and the output of the time service synchronization unit is a second pulse signal PPS, institute
Stating time service synchronization unit includes GPS or beidou timing module, and the time service module connects satellite operation, time service module each second
A failing edge pulse signal, as pulse per second (PPS) PPS can be exported, the pulse per second (PPS) PPS is connected to an outside of control unit
It interrupts；
The external sync unit accesses multiple external synchronization sources, and each synchronisation source one synchronization signal of corresponding generation；
Control unit: described including MCU controller, communication interface, sync cap unit and power source output interface unit
Control unit is used for the control centre of entire program controled power source work, realizes the tune of the multi-parameters such as amplitude, frequency, waveform, phase
Section control；
The communication interface, for carrying out data exchange and receiving to instruct with external controller or other single-chip microcontrollers；
The sync cap unit is various sync break signals；
The power source output unit interface output control signal, the control signal include waveform control signal, enable
Control signal, rhythm control signal and mode control signal；The waveform control signal is digital signal, for by the width of waveform
The information such as value, phase, frequency are sent to power source output unit；It is described to make to can control signal digital signal, for controlling function
The working condition of rate output unit；The rhythm control signal is digital signal, for controlling the work section of power output unit
Bat and period；The mode control signal is digital signal, for determining the output type of power source；
Power output unit: the digital signal that reception control unit is sent, and it is converted into associated analog signal, and with voltage
The form of source or current source exports specific frequency, amplitude, the voltage or current of waveform and phase.
Preferably, the power output unit is made of control unit interface and voltage-controlled power source two parts, the control
Unit interface processed is translated into and can directly control to voltage-controlled power source for receiving the digital signal from control unit
The analog signal of system.
Preferably, the first part of described control unit interface is made of digital analog converter DAC and low-pass filter LPF,
Digital analog converter receives the relevant digital signal of waveform sent by control unit, and is translated into analog signal, the number
Mode converter output stage accesses low-pass filter LPF, for filtering out high frequency harmonic components.
Preferably, the second part of described control unit interface is made of level shifting circuit, for sending out control unit
The digital signal come is converted into can directly controlling the analog signal of power cell output, and by the level of analog signal and voltage-controlled function
Analog level inside rate source is matched.
Preferably, the input signal of the level shifting circuit is to make to can control signal, rhythm control signal and mode control
Signal processed, the output signal of the level shifting circuit are the corresponding analog control signal of three above signal.
Preferably, be voltage controlled voltage source or voltage controlled current source inside the voltage-controlled power source, the voltage controlled voltage source or
Person's voltage controlled current source is made of typical voltage source, current source device and circuit, is used for power output.
Due to the adoption of the above technical scheme, program controled power source disclosed by the invention realizes amplitude, frequency using control unit
The adjusting of the multi-parameters such as rate, waveform, phase controls；The digital signal sent using power output unit reception control unit, and
It is converted into associated analog signal, specific frequency, amplitude, waveform and phase are finally exported in the form of voltage source or current source
Voltage or current can be switched over according to different application demands.It is adjusted in addition, the program controled power source has multiple waveforms output
Section and phase-adjusted function.
Detailed description of the invention
Fig. 1 is the entire block diagram of program controled power source provided by the invention；
Fig. 2 is the block diagram of synchronization unit provided by the invention；
Fig. 3 is the block diagram of control unit provided by the invention；
Fig. 4 is the block diagram of power output unit provided by the invention.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below
The each embodiment of the present invention involved in technical characteristic can be combined with each other as long as they do not conflict with each other.
A kind of program controled power source as Figure 1-Figure 2, by synchronization unit, control unit and power output unit three parts
Composition.Synchronization unit: for providing synchronization signal for program-controlled power system, which includes time service synchronization unit, time service
The output of synchronization unit is a second pulse signal PPS, and time service synchronization unit includes GPS or beidou timing module, time service mould
Block connects satellite operation, and time service module can export a failing edge pulse signal, as pulse per second (PPS) PPS, pulse per second (PPS) PPS each second
It is connected to an external interrupt of control unit, for example interrupts 1, realizes its power output unit I/O port for trigger control unit
Timing.
Other than time service synchronization unit, synchronization unit further includes external sync unit.The access of external sync unit is multiple
External synchronization source, and each synchronisation source one synchronization signal of corresponding generation.Such as: can produce one to system power supply shaping is
System power supply synchronization signal 2, the synchronization signal are connected to the interruption 2 of control unit；Shaping is carried out to the interference signal of outside acquisition
It can produce an external disturbance synchronization signal 3, be connected to the interruption 3 of control unit.Each outer synchronous signal corresponding one
A interrupt signal, such as synchronisation source n are connected to the interruption n of control unit.
As shown in figure 3, control unit: being connect including the output of MCU controller, communication interface, sync cap unit and power source
Mouth unit, control unit are used for the control centre of entire program controled power source work, realize that amplitude, frequency, waveform, phase etc. more and join
Several adjusting control.Wherein, MCU controller selects high performance single-chip microcontroller.This single-chip microcontroller need to have interrupt resources abundant, no
Lower than the dominant frequency of 20MHz and multiple I/O interfaces；Communication interface, for being counted with external controller or other single-chip microcontrollers
According to exchange and instruction is received, communication interface is RS232 or RS485, perhaps orders returned data or program-controlled for receiving data
The state of power source；Sync cap unit is various sync break signals, such as: PPS pulse per second (PPS) interrupt signal or other letters
The external sync interrupt signal that number source generates, can be by the priority of these interrupt signals of the software set of controller, can also
To need interrupt source to be used by software selection.Interrupt trigger signal is generally edging trigger, such as failing edge triggering.
Power source output unit interface output control signal, the control signal include waveform control signal, make to can control letter
Number, rhythm control signal and mode control signal；Waveform control signal is digital signal, for by the amplitude, phase, frequency of waveform
The information such as rate are sent to power source output unit；Make to can control signal digital signal, for controlling the work of power output unit
Make state；Rhythm control signal is digital signal, for controlling work pace and the period of power output unit；Scheme control letter
Number be digital signal, for determining the output type of power source.
As shown in figure 4, power output unit: the digital signal that reception control unit is sent, and it is converted into associated analog letter
Number, and specific frequency, amplitude, the voltage or current of waveform and phase are exported in the form of voltage source or current source.Power
Output unit is made of control unit interface and voltage-controlled power source two parts.
The first part of control unit interface is made of digital analog converter DAC and low-pass filter LPF, and digital analog converter connects
The relevant digital signal of waveform sent by control unit is received, and is translated into analog signal.The mould of analog-digital converter output
There are step transition signal in quasi- signal, will lead in the signal of power source output comprising the corresponding harmonic high frequency of these step signals
Wave component.In order to reduce influence of these harmonic components to output signal, a low pass filtered is accessed in digital analog converter output stage
Wave device LPF, for filtering out high frequency harmonic components.The cutoff frequency of low-pass filter is 100 times higher than the highest frequency effectively exported
More than, thus guarantee low-pass filter to the amplitude of output signal the influence of frequency and phase can ignore.
The second part of control unit interface is made of level shifting circuit, the digital signal for sending control unit
It is converted into can directly controlling the analog signal of power cell output, and by the mould inside the level of analog signal and voltage-controlled power source
Quasi- level is matched.The input signal of level shifting circuit is to make to can control signal, rhythm control signal and scheme control letter
Number, the output signal of level shifting circuit is the corresponding analog control signal of three above signal.
Be inside voltage-controlled power source voltage controlled voltage source perhaps voltage controlled current source voltage controlled voltage source or voltage controlled current source by allusion quotation
Voltage source, current source device and the circuit of type are constituted, and are used for power output.
Through the above structure and 0~50A of amplitude, 10~400Hz of frequency range may be implemented in function, the present invention, and waveform is
Sine wave, square wave, triangular wave, locking phase 0~360 degree adjustable power source synchronous with PPS pulse per second (PPS) or other synchronisation sources
Output.Compared with prior art, the program-controlled adjustings of multi-parameters such as amplitude, frequency, waveform, phase can be achieved in the present invention, and herein
On the basis of derive novel high-pressure test energisation mode, have the jamproof function of synchronous detection.
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.
Claims (7)
1. a kind of program controled power source, characterized by comprising:
Synchronization unit: for providing synchronization signal for program-controlled power system, the synchronization unit includes time service synchronization unit and outer
The output of portion's synchronization unit, the time service synchronization unit is a second pulse signal PPS, and the time service synchronization unit includes GPS
Or beidou timing module, the time service module connect satellite operation, time service module can export a failing edge pulse each second
Signal, as pulse per second (PPS) PPS, the pulse per second (PPS) PPS are connected to an external interrupt of control unit；
The external sync unit accesses multiple external synchronization sources, and each synchronisation source one synchronization signal of corresponding generation；
Control unit: including MCU controller, communication interface, sync cap unit and power source output interface unit, the control
Unit is used for the control centre of entire program controled power source work, realizes the adjusting control of the multi-parameters such as amplitude, frequency, waveform, phase
System；
The communication interface, for carrying out data exchange and receiving to instruct with external controller or other single-chip microcontrollers；
The sync cap unit is various sync break signals；
The power source output unit interface output control signal, the control signal include waveform control signal, make can control
Signal, rhythm control signal and mode control signal；The waveform control signal be digital signal, for by the amplitude of waveform,
The information such as phase, frequency are sent to power source output unit；It is described to make to can control signal digital signal, it is defeated for controlling power
The working condition of unit out；The rhythm control signal is digital signal, for control power output unit work pace and
Period；The mode control signal is digital signal, for determining the output type of power source；
Power output unit: the digital signal that reception control unit is sent, and be converted into associated analog signal, and with voltage source or
The form of person's current source exports specific frequency, amplitude, the voltage or current of waveform and phase.
2. according to program controled power source described in claim 1, it is characterised in that: the power output unit by control unit interface with
And voltage-controlled power source two parts composition, described control unit interface for receiving the digital signal from control unit, and by its
It is converted into the analog signal that can be directly controlled voltage-controlled power source.
3. program controled power source as claimed in claim 2, it is characterised in that: the first part of described control unit interface is turned by digital-to-analogue
Parallel operation DAC and low-pass filter LPF composition, digital analog converter receive the relevant digital signal of waveform sent by control unit,
And it is translated into analog signal, the digital analog converter output stage accesses low-pass filter LPF, for filtering out harmonic high frequency wavelength-division
Amount.
4. program controled power source as claimed in claim 3, it is characterised in that: the second part of described control unit interface is turned by level
Circuit composition is changed, the digital signal for sending control unit is converted into that the simulation letter of power cell output can be directly controlled
Number, and the level of analog signal is matched with the analog level inside voltage-controlled power source.
5. program controled power source as claimed in claim 4, it is characterised in that: the input signal of the level shifting circuit is enabled control
Signal, rhythm control signal and mode control signal processed, the output signal of the level shifting circuit are three above signal pair
The analog control signal answered.
6. program controled power source as claimed in claim 2, it is characterised in that: be inside the voltage-controlled power source voltage controlled voltage source or
Voltage controlled current source, the voltage controlled voltage source or voltage controlled current source are made of typical voltage source, current source device and circuit, are used
In power output.
7. program controled power source described in claim 1, it is characterised in that: the communication interface is RS232 or RS485, for connecing
Receive data perhaps order returned data or the state of program controled power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910560371.8A CN110297112A (en) | 2019-06-26 | 2019-06-26 | A kind of program controled power source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910560371.8A CN110297112A (en) | 2019-06-26 | 2019-06-26 | A kind of program controled power source |
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| CN110297112A true CN110297112A (en) | 2019-10-01 |
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| CN201910560371.8A Pending CN110297112A (en) | 2019-06-26 | 2019-06-26 | A kind of program controled power source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474388A (en) * | 2020-04-16 | 2020-07-31 | 南方电网科学研究院有限责任公司 | Testing instrument |
| CN117074744A (en) * | 2023-07-07 | 2023-11-17 | 国家能源集团科学技术研究院有限公司 | Test signal source generating device and excitation regulator test system |
| CN117220655A (en) * | 2023-09-25 | 2023-12-12 | 常州同惠电子股份有限公司 | Automatic power source matching system and matching method for power equipment |
-
2019
- 2019-06-26 CN CN201910560371.8A patent/CN110297112A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474388A (en) * | 2020-04-16 | 2020-07-31 | 南方电网科学研究院有限责任公司 | Testing instrument |
| CN117074744A (en) * | 2023-07-07 | 2023-11-17 | 国家能源集团科学技术研究院有限公司 | Test signal source generating device and excitation regulator test system |
| CN117220655A (en) * | 2023-09-25 | 2023-12-12 | 常州同惠电子股份有限公司 | Automatic power source matching system and matching method for power equipment |
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