CN104052318B - A kind of low-voltage three-phase input buck DC power source apparatus - Google Patents
A kind of low-voltage three-phase input buck DC power source apparatus Download PDFInfo
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- CN104052318B CN104052318B CN201410277308.0A CN201410277308A CN104052318B CN 104052318 B CN104052318 B CN 104052318B CN 201410277308 A CN201410277308 A CN 201410277308A CN 104052318 B CN104052318 B CN 104052318B
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Abstract
A kind of low-voltage three-phase input buck DC power source apparatus, belong to power technique fields.The device is input into three-phase controllable silicon phase shifting control voltage doubling rectifing circuit by three-phase electricity, is then exported to load；Three-phase controllable silicon phase shifting control voltage doubling rectifing circuit is made up of 4 phase-shift control circuits；Voltage sample circuit, current sampling circuit and temperature sampling circuit are respectively connecting to voltage comparator, the open-collector output of voltage comparator is connected to the negative terminal of optocoupler control device (8), optocoupler control device is forward in series by the input of 4 optocouplers, and the positive input after series connection terminates the anode of the two series filterings electric capacity.The device adopts controllable silicon phase shifting control voltage doubling rectifing circuit, and input low-voltage adjustable range is wide up to 8：1, controlled output voltage is stablized, E, C pole connection silicon controlled control pole of the triode in each phase-shift trigger circuit and anode, strengthens triggering power, improves silicon controlled control range, meets low-voltage input needs.
Description
Technical field
The invention belongs to power technique fields, more particularly to a kind of buck DC power source apparatus.
Background technology
At present, low-voltage wide scope three-phase input buck high power D C power typically all can using three phase rectifier filtering-
DC/DC conversion plans, and the program needs magnetic element to boost, it is difficult to realize, the process of electromagnetic compatibility makes cost at a relatively high, volume
Also than larger.At present, domestic external power and chip supplier, without feasible program.
In order to solve the technical problem, one-way SCR voltage multiplying rectifier scheme can be adopted at present, but must be solved
Problem has：
1st, there to be stable output voltage it is necessary to have feedback control；
2nd, controllable use range it is necessary >=170 °；
3rd, it is 8V that input voltage is minimum, it is necessary to stable to trigger, and special diac and BT33 make phase-shifting trigger and just need
The accessory power supply of string wave voltage >=40V.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, there is provided a kind of low-voltage three-phase input buck DC electricity
Source device, the device low-voltage adjustable range are wider, the voltage stabilization of output, and device makes simple, easy to use.
The technical scheme that adopted for achieving the above object of the present invention is：A kind of low-voltage three-phase input buck D/C power
Device, is characterized in that：Three-phase electricity is input into three-phase controllable silicon phase shifting control voltage doubling rectifing circuit, is then exported to load；
The three-phase controllable silicon phase shifting control voltage doubling rectifing circuit by 4 it is single-phase silicon-controlled constitute single-phase rectification bridge, this is whole
Any two ends of input termination three-phase A, B, C of stream bridge, the interface of the filter capacitor of two series connection connect the three-phase of three-phase A, B, C
Another phase, the anode of two series filtering electric capacity described in the positive output termination of the single-phase rectification bridge of one-way SCR composition, unidirectionally
Group of Silicon Controlled Rectifier into single-phase rectification bridge the described two series filtering electric capacity of negative output termination negative terminal.
The three-phase controllable silicon phase shifting control voltage doubling rectifing circuit is controlled by phase-shift control circuit device, the phase shifting control
Circuit arrangement is made up of 4 phase-shift control circuits；Voltage sample circuit, current sampling circuit and temperature sampling circuit connect respectively
To voltage comparator, the open-collector output of the voltage comparator is connected to the negative terminal of optocoupler control device, the light
Coupling control device is forward in series by the input of 4 optocouplers, and the positive input after series connection terminates the two series filterings electric capacity
Anode.
4 one-way SCRs, its triggers circuit all same, and the composition of every one-way SCR are：Trigger electrode
The E poles of triode are connect, the resistance and electric capacity of one parallel connection of triode C poles meet the anode of the one-way SCR, the B poles Jing of triode
One capacitor connects the anode of the two series filterings electric capacity, collapses and connect diode between the B poles of triode and one-way SCR anode,
And it is in parallel with a resistor, the positive pole of the diode is connected to the B poles of triode, and the negative pole of the diode is connected to silicon controlled
Anode, the B poles of triode also connect the E poles of optocoupler, and the one-way SCR anode also connects the C poles of optocoupler, the input of 4 optocouplers
Forward connect, the positive input after series connection terminates the anode of the two series filterings electric capacity, after 4 optocoupler inputs are forward connected
Negative input terminates the open-collector output of voltage comparator.
The voltage sample circuit is collapsed using the output voltage sample resistance of two series connection and connects the positive and negative of two series filtering electric capacity
End, its tie point Jing resistance connect the negative input end of voltage comparator, the reference voltage of its positive input terminal connection setting.
The negative input end of the current sampling circuit output current positive signal to voltage comparator, the current collection of voltage comparator
Pole open circuit output terminates another voltage comparator negative input end.
The beneficial effect of the inventive method is：
1st, using controllable silicon phase shifting control voltage doubling rectifing circuit, input low-voltage adjustable range is wide up to 8：1；
2nd, using 4 optocouplers, its input receives output voltage control, and its output end is connected to 4 controllable silicons respectively
Phase shifting control voltage doubling rectifing circuit, controls stablizing for output voltage；
3rd, E, C pole of the triode in each phase-shift trigger circuit is connected to silicon controlled control pole and anode, enhances tactile
Power is sent out, silicon controlled control range can be improved, meet the needs of low-voltage input.
Description of the drawings
Fig. 1 is a kind of low-voltage three-phase input buck DC power source apparatus structural representation of the invention.
Fig. 2 is a kind of circuit diagram of low-voltage three-phase input buck DC power source apparatus of the invention.
In figure, 1, three-phase electricity, 2, three-phase controllable silicon phase shifting control voltage doubling rectifing circuit, 3, temperature sampling circuit, 4, voltage
Sample circuit, 5, load, 6, current sampling circuit, 7, voltage comparator, 8, optocoupler control device, 9, phase-shift control circuit device
Specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, but the invention is not limited in specific embodiment.
Embodiment
A kind of low-voltage three-phase input buck DC power source apparatus, in the device, three-phase electricity 1 includes ABC three-phase inputs extremely
Three-phase controllable silicon phase shifting control voltage doubling rectifing circuit 2, then exports to load 5；
Three-phase controllable silicon voltage multiplying rectifier filter capacitor constitutes single-phase rectification bridge by 4 single-phase silicon-controlled Q1-Q4, the rectifier bridge
Input termination three-phase A, B, C any two ends, the interface of filter capacitor C11, C12 of two series connection connects the three of three-phase A, B, C
Another phase of phase, two series filtering electric capacity described in the positive output termination of the single-phase rectification bridge of one-way SCR Q1-Q4 compositions
Anode, two series filtering capacity car C11, C12 described in the negative output termination of the single-phase rectification bridge of one-way SCR Q1-Q4 compositions
Negative terminal.
Three-phase controllable silicon phase shifting control voltage doubling rectifing circuit is controlled by phase-shift control circuit device 9, the phase shifting control electricity
Road device is made up of 4 phase-shift control circuits；Voltage sample circuit 4, current sampling circuit 6 and temperature sampling circuit 3 connect respectively
Voltage comparator 7 is connected to, the open-collector output of the voltage comparator is connected to the negative terminal of optocoupler control device 8, institute
The input that optocoupler control device is stated by 4 optocouplers is forward in series, and the positive input after series connection terminates two series filtering
The anode of electric capacity.
The triggers circuit of 4 one-way SCR Q1-Q4 is identical, and in Fig. 2, the controllable silicon Q1 trigger electrodes of one of triggers circuit connect
The E poles of triode Q11, the resistance R2 and electric capacity C2 of one parallel connection of triode C poles connect the described silicon controlled anode, and described three
The B poles Jing electric capacity C1 devices of pole pipe connect the anode of the two series filterings electric capacity, B poles and the one-way SCR of the triode
Collapse between anode Q1 and meet diode D1 to negative and in parallel with resistance R1, the B poles of triode Q11 also meet the E of an optocoupler U1 by just
Pole, the one-way SCR Q1 anodes also connect the C poles of optocoupler U1, and the input of 4 optocoupler U1-U4 is forward connected, series connection
Positive input afterwards terminates the anode of described two series filterings electric capacity C11, C12, after 4 optocoupler U1-U4 inputs are forward connected
Negative input end Jing resistance R11 connect the open-collector output of voltage comparator ic 1.
Voltage sample circuit is collapsed using output voltage sample resistance R12, R13 of two series connection and is just connecing two series filtering electric capacity
Negative terminal, its tie point Jing resistance R14 connect the "-" input of voltage comparator ic 1, the benchmark electricity of its "+" input stable connection
Pressure.
The negative input end of the output current positive signal of current sampling circuit to voltage comparator ic 2, the open collector of IC2
The "-" input of output termination voltage comparator ic 1.
Claims (4)
1. a kind of low-voltage three-phase input buck DC power source apparatus, is characterized in that：Three-phase electricity (1) is input into three-phase controllable silicon and moves
Phase control voltage doubling rectifing circuit (2), then exports to load (5)；The three-phase controllable silicon phase shifting control voltage doubling rectifing circuit by
Phase-shift control circuit device (9) is controlled, and the phase-shift control circuit device is made up of 4 phase-shift control circuits；Voltage sampling electricity
Road (4), current sampling circuit (6) and temperature sampling circuit (3) are respectively connecting to voltage comparator (7), the voltage comparator
Open-collector output be connected to the negative terminal of optocoupler control device (8), input of the optocoupler control device by 4 optocouplers
End is forward in series, and the positive input after series connection terminates the anode of two series filtering electric capacity；The three-phase controllable silicon phase shifting control
Voltage doubling rectifing circuit by 4 it is single-phase silicon-controlled constitute single-phase rectification bridge, the rectifier bridge input termination three-phase A, B, C any two
End, the interface of the filter capacitor of two series connection connect another phase of the three-phase of three-phase A, B, C, the single-phase rectifier of one-way SCR composition
The anode of two series filtering electric capacity described in the positive output termination of bridge, the negative output terminal of the single-phase rectification bridge of one-way SCR composition
Connect the negative terminal of two described series filtering electric capacity.
2. a kind of low-voltage three-phase input buck DC power source apparatus according to claim 1, is characterized in that：Described 4
One-way SCR, its triggers circuit all same, and the composition of every one-way SCR are：Trigger electrode connects the E poles of triode, and three
The resistance and electric capacity of one parallel connection of pole pipe C pole connect the anode of the one-way SCR, and one capacitor of B poles of triode connects described two
The anode of series filtering electric capacity, collapses between the B poles of triode and one-way SCR anode and connects diode, and in parallel with a resistor, institute
The positive pole for stating diode is connected to the B poles of triode, and the negative pole of the diode is connected to silicon controlled anode, the B of triode
Pole also connects the E poles of optocoupler, and the one-way SCR anode also connects the C poles of optocoupler, and the input of 4 optocouplers is forward connected, series connection
Positive input afterwards terminates the anode of the two series filterings electric capacity, and the negative input termination after 4 optocoupler inputs are forward connected is electric
The open-collector output of pressure comparator.
3. a kind of low-voltage three-phase input buck DC power source apparatus according to claim 1, is characterized in that：The voltage
Sample circuit is collapsed using the output voltage sample resistance of two series connection and connects the positive and negative terminal of two series filtering electric capacity, its tie point Jing resistance
The negative input end of voltage comparator is connect, the reference voltage of its positive input terminal connection setting.
4. a kind of low-voltage three-phase input buck DC power source apparatus according to claim 1, is characterized in that：The electric current
The negative input end of sample circuit output current positive signal to voltage comparator, the open-collector output of voltage comparator connect separately
One voltage comparator negative input end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277308.0A CN104052318B (en) | 2014-06-19 | 2014-06-19 | A kind of low-voltage three-phase input buck DC power source apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277308.0A CN104052318B (en) | 2014-06-19 | 2014-06-19 | A kind of low-voltage three-phase input buck DC power source apparatus |
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| CN104052318A CN104052318A (en) | 2014-09-17 |
| CN104052318B true CN104052318B (en) | 2017-04-05 |
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| CN115268530B (en) * | 2022-07-18 | 2024-02-23 | 江苏莱提电气股份有限公司 | Temperature acquisition system and method based on DVR series-connected silicon controlled rectifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2107726U (en) * | 1991-11-17 | 1992-06-17 | 吕义金 | Three-phase motor multi-function test control protector |
| CN201378801Y (en) * | 2009-02-17 | 2010-01-06 | 中山大洋电机股份有限公司 | AC/DC converting circuit and motor controller employing same |
| CN101783602A (en) * | 2010-02-05 | 2010-07-21 | 龚秋声 | Converting circuit |
| CN201613182U (en) * | 2010-04-20 | 2010-10-27 | 戴明君 | Corona blue light dust collector |
| JP5621443B2 (en) * | 2010-09-15 | 2014-11-12 | パナソニック株式会社 | MOTOR DRIVE DEVICE AND ELECTRIC DEVICE USING THE SAME |
| CN203233324U (en) * | 2013-05-17 | 2013-10-09 | 武汉梅曼科技有限公司 | Pulse solid-state laser power supply with wide voltage output range |
| CN103368418A (en) * | 2013-07-08 | 2013-10-23 | 姜孟泽 | Three-phase rectifying voltage doubling circuit |
| CN203896209U (en) * | 2014-06-19 | 2014-10-22 | 大连理工常州研究院有限公司 | Low-voltage three-phase input voltage boosting and reducing DC power supply device |
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Address after: Changzhou science and Education City, No.18, middle Changwu Road, Wujin District, Changzhou City, Jiangsu Province, 213200 Patentee after: JIANGSU RESEARCH INSTITUTE CO LTD DALIAN University OF TECHNOLOGY Address before: 213164 Changzhou science and Education City, No. 801 middle Wu Road, Wujin District, Jiangsu, Changzhou Patentee before: CHANGZHOU INSTITUTE OF DALIAN University OF TECHNOLOGY |
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Effective date of registration: 20210106 Address after: 213200 Junbo small and micro enterprise park, 288-1 Huacheng Middle Road, development zone, Jintan District, Changzhou City, Jiangsu Province Patentee after: Jintan branch of Dalian Institute of technology Jiangsu Research Institute Co.,Ltd. Address before: Changzhou science and Education City, No.18, middle Changwu Road, Wujin District, Changzhou City, Jiangsu Province, 213200 Patentee before: JIANGSU RESEARCH INSTITUTE CO LTD DALIAN University OF TECHNOLOGY |