CN207664623U - The double control single-phase active electric-power filter shown with multiple harmonic content - Google Patents
The double control single-phase active electric-power filter shown with multiple harmonic content Download PDFInfo
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- CN207664623U CN207664623U CN201721679604.9U CN201721679604U CN207664623U CN 207664623 U CN207664623 U CN 207664623U CN 201721679604 U CN201721679604 U CN 201721679604U CN 207664623 U CN207664623 U CN 207664623U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/20—Active power filtering [APF]
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Abstract
The utility model provides a kind of double control single-phase active electric-power filter shown with multiple harmonic content, including the first current sensor, the second current sensor, AC voltage sensor, direct current voltage sensor, the first current regulating circuit, the second current regulating circuit, alternating voltage modulate circuit, DC voltage modulate circuit, Digital Signal Processing controller, singlechip controller, bipolar transistor driving circuit of insulated gate, insulated gate bipolar transistor inversion circuit, phase-locked loop circuit and display circuit；On-line testing, comparison and the display of the front and back each harmonic of compensation can be also achieved using the technical program on the basis of realizing that the total current harmonics of single-phase circuit compensates.
Description
Technical field
The utility model is related to a kind of electric-power filter field, in particular to a kind of pairs shown with multiple harmonic content
Control single-phase active electric-power filter.
Background technology
The extensive application strong influence of nonlinear load power quality in power distribution network.And severe power quality can be right
Electrical equipment brings detrimental effect, causes equipment working effect to be deteriorated, electric appliance reduced service life.It can even be produced if serious
Raw Electrical Safety problem, leads to Socie-economic loss.In order to ensure efficient electricity consumption, China to the content of power grid each harmonic and
Total percent harmonic distortion sets up standard.
Active Power Filter-APF is a kind of power quality improvement device reducing total percent harmonic distortion.By generating and always
Harmonic current opposite compensation electric current reduces mains by harmonics.Compared with traditional passive power filter, there is compensation speed
The advantages that degree is fast, and controllability is good, quality is small and floor space is small.But since Active Power Filter-APF is just for total humorous
Wave aberration rate compensates, and whether each harmonic of power grid reaches standard after compensation, needs further to verify.
Utility model content
The purpose of the utility model is to overcome above-mentioned deficiencies in the prior art, provide a kind of with multiple harmonic content
The double control single-phase active electric-power filter of display is also realized on the basis of realizing that the total current harmonics of single-phase circuit compensates
On-line testing, comparison and the display of the front and back each harmonic of compensation.
In order to solve the above-mentioned technical problem, the utility model provides a kind of double control shown with multiple harmonic content
Single-phase active electric-power filter, including the first current sensor, the second current sensor, AC voltage sensor, DC voltage
Sensor, the first current regulating circuit, the second current regulating circuit, alternating voltage modulate circuit, DC voltage modulate circuit, number
Word signal processing controller, singlechip controller, bipolar transistor driving circuit of insulated gate, insulated gate bipolar transistor are inverse
Become circuit, phase-locked loop circuit and display circuit；
The singlechip controller includes first interface, second interface, third interface, the 4th interface, the 5th interface；It is described
Digital Signal Processing controller includes first port, second port, third port, the 4th port；The insulated gate bipolar is brilliant
Body tube drive circuit includes driving circuit input terminal, driving circuit output end；The phase-locked loop circuit include phaselocked loop output end,
Phaselocked loop input terminal；
First current sensor is connected between nonlinear load and the first current regulating circuit, first electric current
Modulate circuit is also respectively connected with the first interface of the singlechip controller and the first end of the Digital Signal Processing controller
Mouthful；Second current sensor is connected between power grid and the second current regulating circuit, and the second current regulating circuit is also
Connect the second port of the Digital Signal Processing controller；The direct current voltage sensor is connected to insulated gate bipolar crystal
In pipe inverter circuit between the capacitance both ends and DC voltage modulate circuit of DC terminal, the DC voltage modulate circuit connects institute
State the second interface of singlechip controller；The AC voltage sensor be connected to power grid and the alternating voltage modulate circuit it
Between, the third interface of the alternating voltage modulate circuit connection singlechip controller；The phaselocked loop of the phase-locked loop circuit inputs
End connection alternating voltage modulate circuit, the 4th interface of the phaselocked loop output end connection singlechip controller of the phase-locked loop circuit
And the third port of Digital Signal Processing controller；4th port of Digital Signal Processing controller connects display circuit；It is described
The driving circuit input terminal of the 5th interface connection bipolar transistor driving circuit of insulated gate of singlechip controller, the insulation
The driving circuit output end of grid bipolar transistor driving circuit connects insulated gate bipolar transistor inversion circuit, the insulation
Grid bipolar transistor inverter circuit connects power grid；
First current sensor is detected the electric current of nonlinear load, then by the first current signal of detection
It is sent into the first current regulating circuit, by the conditioning of the first current regulating circuit, is input to singlechip controller；
The direct current voltage sensor in insulated gate bipolar transistor inversion circuit the capacitance both ends of DC terminal it is straight
Galvanic electricity pressure is detected, and after then being handled the d. c. voltage signal of detection feeding DC voltage modulate circuit, is input to
Singlechip controller；
The AC voltage sensor is detected network voltage, is then sent into the ac voltage signal detected and hands over
Galvanic electricity pressure modulate circuit is handled；Ac voltage signal after conditioned and it is conditioned after ac voltage signal again by lock
Phase loop circuit treated real time phasor signal is sent into singlechip controller simultaneously, while the real time phasor signal is also fed into number
Word signal processing controller；
The processor of single chip computer generates the first compensation electricity according to first current signal and the real time phasor signal
Flow signal；The processor of single chip computer generates control signal simultaneously further according to first compensating current signal and right angle voltage signal
The control signal is sent into bipolar transistor driving circuit of insulated gate；
Bipolar transistor driving circuit of insulated gate is by power amplification circuit, by the control signal after light-coupled isolation
It is transmitted in insulated gate bipolar transistor inversion circuit after equal proportion amplification, the control signal control insulated gate bipolar is brilliant
The conducting and shutdown that insulated gate bipolar transistor switchs in body pipe inverter circuit, to obtain conducting shutdown DC voltage letter
Number, generate the second compensating current signal using filter inductance；
Second current sensor is detected power network current, and the second current signal of detection is then sent into second
Current regulating circuit is input to Digital Signal Processing controller by the conditioning of the second current regulating circuit；
The Digital Signal Processing controller using locking phase ring signal as fundamental wave reference signal, respectively to the first current signal and
Second current signal carries out Fourier decomposition, obtains each current harmonics information；Display circuit is by digital signal processing circuit
Obtained each harmonic is shown.
In a preferred embodiment, the singlechip controller is specially embedded controller chip, and product type is
STM32F103。
In a preferred embodiment, first current sensor, the second current sensor are Hall sensor.
In a preferred embodiment, the display circuit is specially liquid crystal display.
Compared to the prior art, the technical solution of the utility model has following advantageous effect：
1. by grid side voltage phase angle and load current, compensation current information is generated, total in realization single-phase circuit
On the basis of current harmonics compensation, On-line testing, comparison and the display of the front and back each harmonic of compensation are also achieved.
2. by the way that the first current regulating circuit, the second current regulating circuit, alternating voltage modulate circuit, DC voltage is arranged
Modulate circuit makes the signal that singlechip controller and Digital Signal Processing controller receive be in singlechip controller and number
In the receptible signal spacing of signal processing controller, it is unlikely to damage singlechip controller and Digital Signal Processing controller,
Improve its service life.
Description of the drawings
Fig. 1 is integrated circuit schematic diagram in the preferred embodiment in the utility model.
Specific implementation mode
The utility model is described further below in conjunction with the drawings and specific embodiments.
A kind of double control single-phase active electric-power filter shown with multiple harmonic content, with reference to figure 1, including the first electricity
Flow sensor, the second current sensor, AC voltage sensor, direct current voltage sensor, the first current regulating circuit, the second electricity
Flow modulate circuit, alternating voltage modulate circuit, DC voltage modulate circuit, Digital Signal Processing controller, singlechip controller,
Bipolar transistor driving circuit of insulated gate, insulated gate bipolar transistor inversion circuit, phase-locked loop circuit and display circuit；
The singlechip controller includes first interface J1, second interface J2, third interface J3, the 4th interface J4, the 5th
Interface J5；The Digital Signal Processing controller includes first port D1, second port D2, third port D3, the 4th port D4；
The bipolar transistor driving circuit of insulated gate includes driving circuit input terminal, driving circuit output end；The phaselocked loop electricity
Road includes phaselocked loop output end, phaselocked loop input terminal；
First current sensor is connected between nonlinear load and the first current regulating circuit, first electric current
Modulate circuit be also respectively connected with the singlechip controller first interface J1 and the Digital Signal Processing controller first
Port D1；Second current sensor is connected between power grid and the second current regulating circuit, the second current regulating electricity
Road is also connected with the second port D2 of the Digital Signal Processing controller；The direct current voltage sensor is connected to insulated gate bipolar
In transistor npn npn inverter circuit between the capacitance both ends and DC voltage modulate circuit of DC terminal, the DC voltage modulate circuit
Connect the second interface J2 of the singlechip controller；The AC voltage sensor is connected to power grid and the alternating voltage tune
Between managing circuit, the third interface J3 of the alternating voltage modulate circuit connection singlechip controller；The phase-locked loop circuit
Phaselocked loop input terminal connects alternating voltage modulate circuit, and the phaselocked loop output end of the phase-locked loop circuit connects singlechip controller
The 4th interface J4 and Digital Signal Processing controller third port D3；4th port D4 of Digital Signal Processing controller connects
Connect display circuit；The driving electricity of 5th interface J5 connection bipolar transistor driving circuit of insulated gate of the singlechip controller
The driving circuit output end of road input terminal, the bipolar transistor driving circuit of insulated gate connects insulated gate bipolar transistor
Inverter circuit, the insulated gate bipolar transistor inversion circuit connect power grid；By the way that the first current regulating circuit, second is arranged
Current regulating circuit, alternating voltage modulate circuit, DC voltage modulate circuit make singlechip controller and Digital Signal Processing control
The signal that device processed receives is in singlechip controller and the receptible signal spacing of Digital Signal Processing controller, is unlikely to
Singlechip controller and Digital Signal Processing controller are damaged, its service life is improved.
First current sensor is detected the electric current of nonlinear load, then by the first current signal of detection
It is sent into the first current regulating circuit, by the conditioning of the first current regulating circuit, is input to singlechip controller；
The direct current voltage sensor in insulated gate bipolar transistor inversion circuit the capacitance both ends of DC terminal it is straight
Galvanic electricity pressure is detected, and after then being handled the d. c. voltage signal of detection feeding DC voltage modulate circuit, is input to
Singlechip controller；
The AC voltage sensor is detected network voltage, is then sent into the ac voltage signal detected and hands over
Galvanic electricity pressure modulate circuit is handled；Ac voltage signal after conditioned and it is conditioned after ac voltage signal again by lock
Phase loop circuit treated real time phasor signal is sent into singlechip controller simultaneously, while the real time phasor signal is also fed into number
Word signal processing controller；
The processor of single chip computer generates the first compensation electricity according to first current signal and the real time phasor signal
Flow signal；The processor of single chip computer generates control signal simultaneously further according to first compensating current signal and right angle voltage signal
The control signal is sent into bipolar transistor driving circuit of insulated gate；
Bipolar transistor driving circuit of insulated gate is by power amplification circuit, by the control signal after light-coupled isolation
It is transmitted in insulated gate bipolar transistor inversion circuit after equal proportion amplification, the control signal control insulated gate bipolar is brilliant
The conducting and shutdown that insulated gate bipolar transistor switchs in body pipe inverter circuit, to obtain conducting shutdown DC voltage letter
Number, generate the second compensating current signal using filter inductance；
Second current sensor is detected power network current, and the second current signal of detection is then sent into second
Current regulating circuit is input to Digital Signal Processing controller by the conditioning of the second current regulating circuit；
The Digital Signal Processing controller using locking phase ring signal as fundamental wave reference signal, respectively to the first current signal and
Second current signal carries out Fourier decomposition, obtains each current harmonics information；Display circuit is by digital signal processing circuit
Obtained each harmonic is shown.
The singlechip controller is specially embedded controller chip, product type STM32F103.
First current sensor, the second current sensor are Hall sensor.
The display circuit is specially liquid crystal display.
The preferable specific implementation mode of the above, only the utility model, but the design concept of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, utilizes this design
The change that unsubstantiality is carried out to the utility model belongs to the behavior for invading scope of protection of the utility model.
Claims (4)
1. a kind of double control single-phase active electric-power filter shown with multiple harmonic content, it is characterised in that including the first electricity
Flow sensor, the second current sensor, AC voltage sensor, direct current voltage sensor, the first current regulating circuit, the second electricity
Flow modulate circuit, alternating voltage modulate circuit, DC voltage modulate circuit, Digital Signal Processing controller, singlechip controller,
Bipolar transistor driving circuit of insulated gate, insulated gate bipolar transistor inversion circuit, phase-locked loop circuit and display circuit；
The singlechip controller includes first interface, second interface, third interface, the 4th interface, the 5th interface；The number
Signal processing controller includes first port, second port, third port, the 4th port；The insulated gate bipolar transistor
Driving circuit includes driving circuit input terminal, driving circuit output end；The phase-locked loop circuit includes phaselocked loop output end, locking phase
Ring input terminal；
First current sensor is connected between nonlinear load and the first current regulating circuit, first current regulating
Circuit is also respectively connected with the first interface of the singlechip controller and the first port of the Digital Signal Processing controller；Institute
It states the second current sensor to be connected between power grid and the second current regulating circuit, the second current regulating circuit is also connected with institute
State the second port of Digital Signal Processing controller；The direct current voltage sensor is connected to insulated gate bipolar transistor inversion
In circuit between the capacitance both ends and DC voltage modulate circuit of DC terminal, the DC voltage modulate circuit connects the monolithic
The second interface of machine controller；The AC voltage sensor is connected between power grid and the alternating voltage modulate circuit, institute
State the third interface of alternating voltage modulate circuit connection singlechip controller；The phaselocked loop input terminal of the phase-locked loop circuit connects
Alternating voltage modulate circuit, the 4th interface and number of the phaselocked loop output end connection singlechip controller of the phase-locked loop circuit
The third port of signal processing controller；4th port of Digital Signal Processing controller connects display circuit；The microcontroller
The driving circuit input terminal of the 5th interface connection bipolar transistor driving circuit of insulated gate of controller, the insulated gate bipolar
The driving circuit output end of transistor npn npn driving circuit connects insulated gate bipolar transistor inversion circuit, the insulated gate bipolar
Transistor npn npn inverter circuit connects power grid；
First current sensor is detected the electric current of nonlinear load, is then sent into the first current signal of detection
First current regulating circuit is input to singlechip controller by the conditioning of the first current regulating circuit；
Direct current of the direct current voltage sensor to the capacitance both ends of DC terminal in insulated gate bipolar transistor inversion circuit
Pressure is detected, and after then being handled the d. c. voltage signal of detection feeding DC voltage modulate circuit, is input to monolithic
Machine controller；
The AC voltage sensor is detected network voltage, and the ac voltage signal detected is then sent into alternating current
Pressure modulate circuit is handled；Ac voltage signal after conditioned and it is conditioned after ac voltage signal pass through phaselocked loop again
Real time phasor signal after processing of circuit is sent into singlechip controller simultaneously, while the real time phasor signal is also fed into digital letter
Number processing controller；
The processor of single chip computer generates the first compensation electric current letter according to first current signal and the real time phasor signal
Number；The processor of single chip computer further according to first compensating current signal and right angle voltage signal generates control signal and by institute
It states control signal and is sent into bipolar transistor driving circuit of insulated gate；
Bipolar transistor driving circuit of insulated gate is by power amplification circuit, by ratios such as control signals after light-coupled isolation
It is transmitted in insulated gate bipolar transistor inversion circuit after example amplification, the control signal controls insulated gate bipolar transistor
The conducting and shutdown that insulated gate bipolar transistor switchs in inverter circuit, to obtain conducting shutdown d. c. voltage signal, then
Filtered inductance generates the second compensating current signal；
Second current sensor is detected power network current, and the second current signal of detection is then sent into the second electric current
Modulate circuit is input to Digital Signal Processing controller by the conditioning of the second current regulating circuit；
The Digital Signal Processing controller is using locking phase ring signal as fundamental wave reference signal, respectively to the first current signal and second
Current signal carries out Fourier decomposition, obtains each current harmonics information；Display circuit obtains digital signal processing circuit
Each harmonic shown.
2. the double control single-phase active electric-power filter according to claim 1 shown with multiple harmonic content, special
Sign is that the singlechip controller is specially embedded controller chip, product type STM32F103.
3. the double control single-phase active electric-power filter according to claim 1 shown with multiple harmonic content, special
Sign is that first current sensor, the second current sensor are Hall sensor.
4. the double control single-phase active electric-power filter according to claim 1 shown with multiple harmonic content, special
Sign is that the display circuit is specially liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721679604.9U CN207664623U (en) | 2017-12-06 | 2017-12-06 | The double control single-phase active electric-power filter shown with multiple harmonic content |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721679604.9U CN207664623U (en) | 2017-12-06 | 2017-12-06 | The double control single-phase active electric-power filter shown with multiple harmonic content |
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| Publication Number | Publication Date |
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| CN207664623U true CN207664623U (en) | 2018-07-27 |
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|---|---|---|---|
| CN201721679604.9U Expired - Fee Related CN207664623U (en) | 2017-12-06 | 2017-12-06 | The double control single-phase active electric-power filter shown with multiple harmonic content |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211701A (en) * | 2020-02-13 | 2020-05-29 | 厦门大学 | Few-sensor model prediction control method of three-phase voltage source type rectifier |
-
2017
- 2017-12-06 CN CN201721679604.9U patent/CN207664623U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211701A (en) * | 2020-02-13 | 2020-05-29 | 厦门大学 | Few-sensor model prediction control method of three-phase voltage source type rectifier |
| CN111211701B (en) * | 2020-02-13 | 2021-08-13 | 厦门大学 | Few-sensor model prediction control method of three-phase voltage source type rectifier |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180727 Termination date: 20211206 |