CN104052318A - Low-voltage three-phase-input buck-boost DC power device - Google Patents
Low-voltage three-phase-input buck-boost DC power device Download PDFInfo
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- CN104052318A CN104052318A CN201410277308.0A CN201410277308A CN104052318A CN 104052318 A CN104052318 A CN 104052318A CN 201410277308 A CN201410277308 A CN 201410277308A CN 104052318 A CN104052318 A CN 104052318A
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Abstract
The invention provides a low-voltage three-phase-input buck-boost DC power device, and belongs to the technical field of power devices. According to the buck-boost DC power device, three-phase currents are input to a three-phase SCR phase-shift control voltage doubling rectifying circuit and then output to a load. The three-phase SCR phase-shift control voltage doubling rectifying circuit is composed of four phase-shift control circuits. A voltage sampling circuit, a current sampling circuit and a temperature sampling circuit are connected to a voltage comparer, the pull-down output end of the voltage comparer is connected to the negative end of an optical coupler control device, and the positive end of the optical coupler control device is connected with the output positive ends of the four phase-shift control circuits. The three-phase SCR phase-shift control voltage doubling rectifying circuit is adopted, the input low-voltage regulation range can be 8:1, stabilization of output voltages is controlled, E poles and C poles of triodes in phase-shift trigger circuits are connected with the control electrodes and the anodes of an SCR respectively, trigger power is improved, the control range of the SCR can be widened, and the requirement for low-voltage input is met.
Description
Technical field
The invention belongs to power technique fields, particularly a kind of buck DC power source apparatus.
Background technology
At present, low-voltage wide region three-phase input buck high power D c-power supply generally all can adopt three phase rectifier filtering-DC/DC conversion plan, and this scheme needs magnetic element to boost, and is difficult to realize, and the processing of electromagnetic compatibility makes cost quite high, and volume is also larger.At present, power supply and chip supplier both at home and abroad, all without feasible program.
In order to solve this technical problem, can adopt at present one-way SCR voltage multiplying rectifier scheme, but the problem that must solve has:
1, to there is stable output voltage must have FEEDBACK CONTROL;
2, the controlled scope of application necessary >=170 °;
3, input voltage is minimum is 8V, must stablely trigger, and special diac and BT33 do phase shift and trigger the accessory power supply that needs sine voltage >=40V.
Summary of the invention
The object of the invention is in order to overcome the deficiencies in the prior art, a kind of low-voltage three-phase input buck DC power source apparatus is provided, this device low-voltage adjustable range is wider, the voltage stabilization of output, and device is made simple, easy to use.
The technical scheme that the present invention adopted is for achieving the above object: a kind of low-voltage three-phase input buck DC power source apparatus, is characterized in that: three-phase electricity inputs to three-phase controllable silicon phase shifting control voltage doubling rectifing circuit, then exports load to; Described three-phase controllable silicon phase shifting control voltage doubling rectifing circuit is by the control of phase-shift control circuit device, and described phase-shift control circuit device is made up of 4 phase-shift control circuits; Voltage sample circuit, current sampling circuit and temperature sampling circuit are connected to respectively voltage comparator, the drop-down output of described voltage comparator is connected to the negative terminal of optocoupler control device, the anode of described optocoupler control device connects the anode of described 4 phase-shift control circuits output, and described optocoupler control device is forward in series by the input of 4 optocouplers.
Described three-phase controllable silicon phase shifting control voltage doubling rectifing circuit is by 4 single-phase silicon-controlled single-phase rectification bridges that form, the input termination three-phase A of this rectifier bridge, any two ends of B, C, the interface of the filter capacitor of two series connection connects another phase of the three-phase of three-phase A, B, C, 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, the negative terminal of two series filtering electric capacity described in the negative output termination of the single-phase rectification bridge of one-way SCR composition.
Described 4 one-way SCRs, its circuits for triggering are all identical, and the formation of every one-way SCR is: trigger electrode connects the E utmost point of triode, the triode C utmost point connects the anode of this one-way SCR through the resistance of a parallel connection and electric capacity, the B utmost point of triode connects the anode of described two series filtering electric capacity through a capacitor, between the B utmost point of triode and one-way SCR anode, collapse and connect diode by just to negative, and in parallel with a resistor, the B utmost point of triode also connects the E utmost point of optocoupler, described one-way SCR anode also connects the C utmost point of optocoupler, the input of 4 optocouplers is forward connected, the anode of two series filtering electric capacity described in positive input termination after series connection, the drop-down output of the negative input termination voltage comparator after 4 optocoupler inputs are forward connected.
Described voltage sample circuit adopts the output voltage sample resistance of two series connection to collapse and connects the positive and negative terminal of two series filtering electric capacity, and its tie point connects the negative input end of voltage comparator through resistance, and its positive input terminal connects the reference voltage of setting.
Described current sampling circuit output current positive signal is to the negative input end of voltage comparator, another voltage comparator negative input end of drop-down output termination of voltage comparator.
The beneficial effect of the inventive method is:
1, adopt controllable silicon phase shifting control voltage doubling rectifing circuit, the wide 8:1 that reaches of input low-voltage adjustable range;
2, adopt 4 optocouplers, its input is all subject to output voltage control, and its output has connected respectively 4 controllable silicon phase shifting control voltage doubling rectifing circuits, has controlled the stable of output voltage;
3, the E of the triode in each phase-shift trigger circuit, the C utmost point have connected the silicon controlled control utmost point and anode, have strengthened triggering power, can improve silicon controlled control range, meet the needs of low-voltage input.
Brief description of the drawings
Fig. 1 is a kind of low-voltage three-phase input of the present invention buck DC power source apparatus structural representation.
Fig. 2 is the circuit diagram of a kind of low-voltage three-phase input of the present invention buck DC power source apparatus.
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
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, but the present invention is not limited to specific embodiment.
Embodiment
A kind of low-voltage three-phase input buck DC power source apparatus, in this device, three-phase electricity 1 comprises that ABC three-phase inputs to three-phase controllable silicon phase shifting control voltage doubling rectifing circuit 2, then exports load 5 to; Described three-phase controllable silicon phase shifting control voltage doubling rectifing circuit is controlled by phase-shift control circuit device 9, and described phase-shift control circuit device is made up of 4 phase-shift control circuits; Voltage sample circuit 4, current sampling circuit 6 and temperature sampling circuit 3 are connected to respectively voltage comparator 7, the drop-down output of described voltage comparator is connected to the negative terminal of optocoupler control device 8, the anode of described optocoupler control device connects the anode of described 4 phase-shift control circuits output, and described optocoupler control device is forward in series by the input of 4 optocouplers.
Three-phase controllable silicon voltage multiplying rectifier filter capacitor forms single-phase rectification bridge by 4 single-phase silicon-controlled Q1-Q4, the input termination three-phase A of this rectifier bridge, any two ends of B, C, the interface of filter capacitor C11, the C12 of two series connection connects another phase of the three-phase of three-phase A, B, C, the anode of two series filtering electric capacity described in the positive output termination of the single-phase rectification bridge of one-way SCR Q1-Q4 composition, two series filtering capacity car C11 described in the negative output termination of the single-phase rectification bridge of one-way SCR Q1-Q4 composition, the negative terminal of C12.
The circuits for triggering of 4 one-way SCR Q1-Q4 are identical, in Fig. 2, the controllable silicon Q1 trigger electrode of one of circuits for triggering connects the E utmost point of triode Q11, this triode C utmost point connects described this silicon controlled anode through resistance R 2 and the capacitor C 2 of a parallel connection, the B utmost point of described triode connects the anode of described two series filtering electric capacity through capacitor C 1 device, between the B utmost point of described triode and described one-way SCR anode Q1, collapse and meet diode D1 by just to negative, and in parallel with resistance R 1, the B utmost point of triode Q11 also connects the E utmost point of an optocoupler U1, described one-way SCR Q1 anode also connects the C utmost point of optocoupler U1, the input of 4 described optocoupler U1-U4 is forward connected, two series filtering capacitor C 11 described in positive input termination after series connection, the anode of C12, negative input end after 4 optocoupler U1-U4 inputs are forward connected connects the open-collector output of voltage comparator ic 1 through resistance R 11.
Voltage sample circuit adopts output voltage sample resistance R12, the R13 of two series connection to collapse and connects the positive and negative terminal of two series filtering electric capacity, and its tie point connects "-" input of voltage comparator ic 1, the reference voltage of its "+" input stable connection through resistance R 14.
The output current positive signal of current sampling circuit is to the negative input end of voltage comparator ic 2, "-" input of the drop-down output termination voltage comparator ic 1 of IC2.
Claims (5)
1. a low-voltage three-phase input buck DC power source apparatus, is characterized in that: three-phase electricity (1) inputs to three-phase controllable silicon phase shifting control voltage doubling rectifing circuit (2), then exports load (5) to; Described three-phase controllable silicon phase shifting control voltage doubling rectifing circuit is controlled by phase-shift control circuit device (9), and described phase-shift control circuit device is made up of 4 phase-shift control circuits; Voltage sample circuit (4), current sampling circuit (6) and temperature sampling circuit (3) are connected to respectively voltage comparator (7), the drop-down output of described voltage comparator is connected to the negative terminal of optocoupler control device (8), the anode of described optocoupler control device connects the anode of described 4 phase-shift control circuits output, and described optocoupler control device is forward in series by the input of 4 optocouplers.
2. a kind of low-voltage three-phase input buck DC power source apparatus according to claim 1, it is characterized in that: described three-phase controllable silicon phase shifting control voltage doubling rectifing circuit is by 4 single-phase silicon-controlled single-phase rectification bridges that form, the input termination three-phase A of this rectifier bridge, B, the any two ends of C, the interface of the filter capacitor of two series connection meets three-phase A, B, another phase of the three-phase of C, 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, the negative terminal of two series filtering electric capacity described in the negative output termination of the single-phase rectification bridge of one-way SCR composition.
3. a kind of low-voltage three-phase input buck DC power source apparatus according to claim 2, it is characterized in that: described 4 one-way SCRs, its circuits for triggering are all identical, and the formation of every one-way SCR is: trigger electrode connects the E utmost point of triode, the triode C utmost point connects the anode of this one-way SCR through the resistance of a parallel connection and electric capacity, the B utmost point of triode connects the anode of described two series filtering electric capacity through a capacitor, between the B utmost point of triode and one-way SCR anode, collapse and connect diode by just to negative, and in parallel with a resistor, the B utmost point of triode also connects the E utmost point of optocoupler, described one-way SCR anode also connects the C utmost point of optocoupler, the input of 4 optocouplers is forward connected, the anode of two series filtering electric capacity described in positive input termination after series connection, the drop-down output of the negative input termination voltage comparator after 4 optocoupler inputs are forward connected.
4. a kind of low-voltage three-phase input buck DC power source apparatus according to claim 1, it is characterized in that: described voltage sample circuit adopts the output voltage sample resistance of two series connection to collapse and connects the positive and negative terminal of two series filtering electric capacity, its tie point connects the negative input end of voltage comparator through resistance, its positive input terminal connects the reference voltage of setting.
5. a kind of low-voltage three-phase input buck DC power source apparatus according to claim 1, it is characterized in that: described current sampling circuit output current positive signal is to the negative input end of voltage comparator another voltage comparator negative input end of drop-down output termination of voltage comparator.
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| 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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| 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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| CN104052318B CN104052318B (en) | 2017-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115268530A (en) * | 2022-07-18 | 2022-11-01 | 江苏莱提电气股份有限公司 | Series-connection thyristor temperature acquisition system and method based on DVR |
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| 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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Patent Citations (8)
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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 |
| JP2012065412A (en) * | 2010-09-15 | 2012-03-29 | Panasonic Corp | Motor driving device, and electrical equipment 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115268530A (en) * | 2022-07-18 | 2022-11-01 | 江苏莱提电气股份有限公司 | Series-connection thyristor temperature acquisition system and method based on DVR |
| 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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| CN104052318B (en) | 2017-04-05 |
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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 |
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