CN209345007U - Frequency conversion light modulator based on PFC and T-type inverter circuit - Google Patents
Frequency conversion light modulator based on PFC and T-type inverter circuit Download PDFInfo
- Publication number
- CN209345007U CN209345007U CN201822145024.2U CN201822145024U CN209345007U CN 209345007 U CN209345007 U CN 209345007U CN 201822145024 U CN201822145024 U CN 201822145024U CN 209345007 U CN209345007 U CN 209345007U
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- China
- Prior art keywords
- switching tube
- diode
- pfc
- inverter circuit
- polar capacitor
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model discloses the frequency conversion light modulators based on PFC and T-type inverter circuit, which is characterized in that including PFC rectification circuit and the T-type inverter circuit being connected by intermediate capacitance in parallel with its output end.The utility model frequency conversion light modulator can be improved the power factor of input current close to 1, reduce power supply to the harmonic pollution of power grid；The sinewave output of standard can be obtained by inversion for energy in intermediate capacitance, is not influenced by input power grid, improves output frequency；It is substantially reduced the volume and weight of step-up transformer and circuit isolating transformer, reduces cost.
Description
Technical field
The utility model relates to frequency conversion light modulators, more particularly to the frequency conversion based on PFC and T-type inverter circuit
Light modulator.
Background technique
The dimmer circuit structure that airport uses now has substantially two kinds: silicon-controlled phase-controlled dimmer and IGBT high-frequency PWM
Sinewave dimmer.
Silicon-controlled phase-controlled dimmer carries out phased copped wave to power-frequency voltage by controllable silicon semiconductor and exports to adjust, defeated
Enter that current power factor is low, and harmonic wave is big, reactive current, which needs to increase, is twice cross-section of cable product, needs to increase a power in input
Compensation device could reduce light modulator to the interference of power grid and influence；Output voltage electric current crest factor is big, and harmonic content is high, no
It only will have a direct impact on the service life of navaid lamps and lanterns, and step-up transformer noise is very big (more than 80dB), and frequency and power grid
It is identical, only 50Hz, in this way since the volume and weight of step-up transformer and isolating transformer it is all very big, a such as 30k
Step-up transformer weight be more than 200kg, not only take iron expense copper, occupy that machine room area is big, and carrying and installation is all highly difficult.
High-frequency PWM light modulator is by high frequency chopping, and multiple copped wave transformation, defeated by High frequency filter in a power frequency period
The current waveform of an approximate sine wave can be obtained by entering output, there is certain improvement relative to phase-controlled dimmer, but by
It is larger to input electric network influencing, it is not mark that when the harmonic content of power grid is higher, the waveform of output, which can also contain a large amount of harmonic wave,
Quasi- sine wave；And its output frequency can only be mains frequency, only 50Hz, is not avoided that super large weight and volume equally yet
Step-up transformer.
Two kinds of light modulators are all AC/AC single stage shift circuits, can not achieve frequency conversion function.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and proposes based on PFC and T-type inversion
The frequency conversion light modulator of circuit is connected including PFC rectification circuit and by intermediate capacitance in parallel with its output end
T-type inverter circuit.
The intermediate capacitance includes the first polar capacitor, the second polar capacitor；First polar capacitor and the second polarity
Capacitor series connection.
The PFC rectification circuit includes boost inductance, first diode, the second diode, the three or two pole
Pipe, the 4th diode, the 5th diode, the 6th diode, first switch tube.
The boost inductance first terminates the PFC rectification circuit input end, the boost inductance second end
Connect first diode anode, the second diode cathode；First diode cathode connects the 6th diode cathode, first switch tube first
End, the 4th diode cathode；6th diode cathode connects the first polar capacitor anode, PFC rectification circuit positive output
End；First polar capacitor cathode connects the 4th diode cathode, third diode cathode, the second polar capacitor anode；Second polarity
Capacitor cathode connects PFC rectification circuit negative output terminal, the 5th diode cathode；5th diode cathode connects the two or two
Pole pipe anode, third diode cathode, first switch tube second end.
The T-type inverter circuit includes the 4th switching tube, the 5th switching tube, the 6th switching tube, the 7th switching tube, inversion electricity
Sense, inversion capacitor；The 4th switching tube second end end is connected with the first polar capacitor cathode, T-type inverter circuit negative output terminal；
The first polar capacitor anode connects the 6th switching tube first end；6th switching tube second terminates the 5th switching tube second
End, the 7th switching tube first end, inversion inductor first end；The inversion inductor second terminates inversion capacitor first end, T-type inversion
Circuit positive output end；The inversion capacitor second terminates T-type inverter circuit negative output terminal；7th switching tube second terminates function
Rate factor correcting rectification circuit negative output terminal；4th switching tube input the 5th switching tube input terminal of termination.
Further, the first switch tube, second switch, third switching tube, the 4th switching tube, the 5th switching tube,
6th switching tube, the 7th switching tube are the metal-oxide-semiconductor of anti-parallel diodes or the IGBT pipe of anti-parallel diodes or fast extensive
Multiple diode.
Further, the PFC rectification circuit is three tunnels of single channel or output end parallel connection, is used for single-phase city
Electricity or the voltage of three-phase mains are adjusted.
Further, the inverter circuit includes all the way or three tunnels of output end parallel connection, being used for single-phase alternating current or three-phase city
The voltage inversion of electricity, which exports, to be adjusted.
The utility model has the beneficial effects that: the power factor of input current can be improved in the utility model circuit structure
Close to 1, power supply is reduced to the harmonic pollution of power grid；The sine wave that standard can be obtained by inversion in energy in intermediate capacitance is defeated
Out, it is not influenced by input power grid, improves output frequency, realize variable frequency adjustment；Circuit is more simplified, reliability is higher；Significantly
The volume and weight for reducing step-up transformer and circuit isolating transformer, reduces cost.
Detailed description of the invention
Fig. 1 is the frequency conversion dimmer circuit figure based on PFC and T-type inverter circuit.
In figure: Q1- first switch tube；Q2- second switch；Q3- third switching tube；The 4th switching tube of Q4-；Q5- the 5th
Switching tube；The 6th switching tube of Q6-；The 7th switching tube of Q7-；L1, L2, L3- boost inductance；L4- inversion inductor；The first polarity of C1-
Capacitor；The second polar capacitor of C2-；C3- inversion capacitor；D1- first diode；The second diode of D2-；D3- third diode；
The 4th diode of D4-；The 5th diode of D5-；The 6th diode of D6-；T- isolating transformer；L- aid-to-navigation light.
Specific embodiment
1 the utility model is described in further detail with reference to the accompanying drawing:
As shown in Figure 1, frequency conversion light modulator of the utility model based on PFC and T-type inverter circuit, including function
Rate factor correcting rectification circuit and the T-type inverter circuit being connected by intermediate capacitance in parallel with its output end.
The intermediate capacitance includes the first polar capacitor, the second polar capacitor；First polar capacitor and the second polarity
Capacitor series connection.
The PFC rectification circuit includes boost inductance, first diode, the second diode, the three or two pole
Pipe, the 4th diode, the 5th diode, the 6th diode, first switch tube.
Boost inductance first terminates the PFC rectification circuit input end, the termination of boost inductance second the
One diode cathode, the second diode cathode；First diode cathode connect the 6th diode cathode, first switch tube first end,
4th diode cathode；6th diode cathode connects the first polar capacitor anode, PFC rectification circuit positive output end；
First polar capacitor cathode connects the 4th diode cathode, third diode cathode, the second polar capacitor anode；Second polar capacitor
Cathode connects PFC rectification circuit negative output terminal, the 5th diode cathode；5th diode cathode connects the second diode
Anode, third diode cathode, first switch tube second end.
T-type inverter circuit include the 4th switching tube, the 5th switching tube, the 6th switching tube, the 7th switching tube, inversion inductor,
Inversion capacitor；The 4th switching tube second end end is connected with the first polar capacitor cathode, T-type inverter circuit negative output terminal；Institute
It states the first polar capacitor anode and connects the 6th switching tube first end；The 5th switching tube second end of 6th switching tube second termination,
7th switching tube first end, inversion inductor first end；The inversion inductor second terminates inversion capacitor first end, T-type inversion electricity
Road positive output end；The inversion capacitor second terminates T-type inverter circuit negative output terminal；The second termination power of 7th switching tube
Factor correcting rectification circuit negative output terminal；4th switching tube input the 5th switching tube input terminal of termination.
First switch tube, second switch, third switching tube, the 4th switching tube, the 5th switching tube, the 6th switching tube,
Seven switching tubes are the metal-oxide-semiconductor of anti-parallel diodes or the IGBT pipe or fast recovery diode of parallel diode.
PFC rectification circuit is single channel or three tunnels, is adjusted for single-phase alternating current or the voltage of three-phase mains:
(1) when outer network source is single phase ac alternating current, boost inductance first terminates the PFC rectified current
Road positive input terminal, that is, single phase ac alternating current firewire input terminal；
(2) when outer network source is three-phase alternating current alternating current, the first end of three boost inductances connects the power factor respectively
Correction rectifying circuit positive input terminal, that is, three-phase alternating current alternating current firewire input terminal, three tunnel PFC rectification circuit parallel connections are
Three tunnel PFC rectification circuit positive output ends, negative output terminal are in parallel with intermediate capacitance, the first polar capacitor and the second pole
Property capacitor series connection node is connected with three tunnel PFC rectification circuit negative input ends, zero curve or ground wire.
Boost inductance first terminates the PFC rectification circuit input end, the termination of boost inductance second the
One diode cathode, the second diode cathode；First diode cathode connect the 6th diode cathode, first switch tube first end,
4th diode cathode；6th diode cathode connects the first polar capacitor anode, PFC rectification circuit positive output end；
First polar capacitor cathode connects the 4th diode cathode, third diode cathode, the second polar capacitor anode；Second polar capacitor
Cathode connects PFC rectification circuit negative output terminal, the 5th diode cathode；5th diode cathode connects the second diode
Anode, third diode cathode, first switch tube second end.
T-type inverter circuit output end connects load circuit by step-up transformer.The load of airfield aid is multiple series connection
Aid-to-navigation light unit, each aid-to-navigation light unit includes isolating transformer, the aid-to-navigation light that is connected with isolating transformer output end.Isolation
It is connected between transformer primary side by cable.
PFC rectification circuit working principle:
(1) positive half cycle soft start: circuit is sequentially connected first inductance, first diode, the 6th diode, the first pole
Property capacitor, the first polar capacitor connect zero curve or ground connection；
(2) negative half period soft start: circuit is to be sequentially connected the second polar capacitor, the 5th diode, the boosting of the second diode
Inductance, the second polar capacitor anode connect zero curve or ground connection.
(3) work normally: switching tube realizes SPWM driving by control duty ratio；Copped wave circuit is boost inductance, first
The circuit that diode, first switch tube, third diode, zero curve or ground wire are formed；Continuous current circuit is the first inductance, the one or two pole
The circuit that pipe, the 6th diode, the first polar capacitor, zero curve or ground wire are formed.First switch tube conducting, energy stores are being boosted
Inductance, intermediate capacitance storage energy powering load；When first switch tube turns off, the energy for being stored in boost inductance passes through afterflow
Circuit is capacitor charging and powering load.
T-type inverter circuit working principle: the 4th switching tube complementary with the 6th switching tube is upper tube, the 5th switching tube and the 7th
Switching tube is complementary, is down tube；When upper tube is opened, the 6th switching tube and inversion inductor, inversion capacitor, the first polar capacitor are formed back
Road；When upper tube turns off, the 4th switching tube, the 5th switching tube, inversion inductor, inversion capacitor and load forming circuit.
In conclusion the utility model using the above scheme, can be improved the power factor of input current close to 1, reduce
Harmonic pollution of the power supply to power grid；The sinewave output of standard can be obtained by inversion for energy in intermediate capacitance, not inputted
The influence of power grid improves output frequency；Be substantially reduced the volume and weight of step-up transformer and circuit isolating transformer, reduce at
This.
The limitation that the technical solution of the utility model is not limited to the above specific embodiments, all skills according to the present utility model
The technology deformation that art scheme is made, each falls within the protection scope of the utility model.
Claims (4)
1. the frequency conversion light modulator based on PFC and T-type inverter circuit, which is characterized in that whole including PFC
Current circuit and the T-type inverter circuit being connected by intermediate capacitance in parallel with its output end；
The intermediate capacitance includes the first polar capacitor, the second polar capacitor；First polar capacitor and the second polar capacitor
Series connection；
The PFC rectification circuit includes boost inductance, first diode, the second diode, third diode,
Four diodes, the 5th diode, the 6th diode, first switch tube；
The boost inductance first terminates the PFC rectification circuit input end, the termination of boost inductance second the
One diode cathode, the second diode cathode；First diode cathode connect the 6th diode cathode, first switch tube first end,
4th diode cathode；6th diode cathode connects the first polar capacitor anode, PFC rectification circuit positive output end；
First polar capacitor cathode connects the 4th diode cathode, third diode cathode, the second polar capacitor anode；Second polar capacitor
Cathode connects PFC rectification circuit negative output terminal, the 5th diode cathode；5th diode cathode connects the second diode
Anode, third diode cathode, first switch tube second end；
The T-type inverter circuit include the 4th switching tube, the 5th switching tube, the 6th switching tube, the 7th switching tube, inversion inductor,
Inversion capacitor；The 4th switching tube second end end is connected with the first polar capacitor cathode, T-type inverter circuit negative output terminal；Institute
It states the first polar capacitor anode and connects the 6th switching tube first end；The 5th switching tube second end of 6th switching tube second termination,
7th switching tube first end, inversion inductor first end；The inversion inductor second terminates inversion capacitor first end, T-type inversion electricity
Road positive output end；The inversion capacitor second terminates T-type inverter circuit negative output terminal；The second termination power of 7th switching tube
Factor correcting rectification circuit negative output terminal；4th switching tube first terminates the 5th switching tube first end.
2. the frequency conversion light modulator based on PFC and T-type inverter circuit according to claim 1, which is characterized in that
The first switch tube, second switch, third switching tube, the 4th switching tube, the 5th switching tube, the 6th switching tube, the 7th open
Close the IGBT pipe or fast recovery diode of metal-oxide-semiconductor or anti-parallel diodes that pipe is anti-parallel diodes.
3. the frequency conversion light modulator based on PFC and T-type inverter circuit according to claim 1, which is characterized in that
The PFC rectification circuit is three tunnels of single channel or output end parallel connection, for single-phase alternating current or the voltage of three-phase mains
It adjusts.
4. the frequency conversion light modulator based on PFC and T-type inverter circuit according to claim 3, which is characterized in that
The inverter circuit is all the way or three tunnels of output end parallel connection, the voltage inversion for single-phase alternating current or three-phase mains export tune
Section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145024.2U CN209345007U (en) | 2018-12-19 | 2018-12-19 | Frequency conversion light modulator based on PFC and T-type inverter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145024.2U CN209345007U (en) | 2018-12-19 | 2018-12-19 | Frequency conversion light modulator based on PFC and T-type inverter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209345007U true CN209345007U (en) | 2019-09-03 |
Family
ID=67758088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822145024.2U Expired - Fee Related CN209345007U (en) | 2018-12-19 | 2018-12-19 | Frequency conversion light modulator based on PFC and T-type inverter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209345007U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787498A (en) * | 2021-03-01 | 2021-05-11 | 深圳市商宇电子科技有限公司 | Low-cost PFC converter based on Boost circuit |
| CN112821774A (en) * | 2021-02-02 | 2021-05-18 | 深圳弘德智能有限公司 | Converter |
-
2018
- 2018-12-19 CN CN201822145024.2U patent/CN209345007U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821774A (en) * | 2021-02-02 | 2021-05-18 | 深圳弘德智能有限公司 | Converter |
| CN112787498A (en) * | 2021-03-01 | 2021-05-11 | 深圳市商宇电子科技有限公司 | Low-cost PFC converter based on Boost circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190903 Termination date: 20211219 |