CN203596754U - Isolated ac-dc converter - Google Patents
Isolated ac-dc converter Download PDFInfo
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- CN203596754U CN203596754U CN201320701504.7U CN201320701504U CN203596754U CN 203596754 U CN203596754 U CN 203596754U CN 201320701504 U CN201320701504 U CN 201320701504U CN 203596754 U CN203596754 U CN 203596754U
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- 238000002955 isolation Methods 0.000 claims abstract description 45
- 238000005070 sampling Methods 0.000 claims abstract description 22
- 230000009466 transformation Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 36
- 238000001914 filtration Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 11
- 238000004088 simulation Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000007257 malfunction Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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Abstract
The utility model provides an isolated AC-DC converter. The isolated AC-DC converter comprises a rectification filter circuit, a PWM converting circuit, a power pulse transformer, a high-frequency pulse rectification circuit, a controller, a first electric isolation device and an output voltage adjusting device. An output chopped wave of the rectification filter circuit is changed into a power PWM pulse through the PWM converting circuit and power factor correction is carried out. The power pulse transformer converts the voltage outputted from the PWM converting circuit from the original terminal to the secondary terminal. The high-frequency pulse rectification circuit rectifies the power pulse outputted from the secondary terminal of the power pulse transformer. The high-frequency pulse rectification circuit and the controller are connected through the first electric isolation device. The output voltage adjusting device comprises a voltage sampling proportion transformation circuit, a voltage comparator, a D/A converter, a second electric isolation device and a fourth electric isolation device. The converter has a function of adjusting output voltage remotely and can be conveniently applied to a power supply system needing dispatch control.
Description
Technical field
The utility model relates to a kind of AC-DC transducer.More particularly, the utility model relates to a kind of separate AC-DC transducer that can carry out to output voltage remote adjustment.
Background technology
In civilian direct current using electricity system, the source of DC power-supply system electric power often has a variety of, can be from exchanging AC civil power, solar power generation, wind power generation, natural gas power, multiple battery accumulate etc., these different types of electric power, through " conversion ", " mixing ", after " synthesizing ", become the power source in direct current system.Meanwhile, due to the restriction of device, equipment and technology, can not make the infinitely-great single equipment of power, when required power expansion and the high-power system, normally realize by a lot of small-power modules " synthesizing ".
To these multiple power sources of direct current system, need suitable scheduling strategy, to realize the high efficiency of using energy source.For example: shine upon sufficient time the preferentially direct utilization of solar energy; While thering is no sunshine, the electric power of having deposited will be used, when having deposited electric power and using up, electric main will be used; And in the time of electricity consumption trough, preferentially use AC wave trough civil power, and meanwhile, can be by the storage of trough civil power, and use afterwards.The electric energy in various sources is converted to direct current, then just can synthesizes more powerful electric energy output according to circuit shown in Fig. 1.Regulate the output of certain converting unit, just can control the size of this converting unit power output, thereby realize the scheduling controlling to multiple power source electric energy output.Wherein just can use AC-DC equipment to realize the conversion of AC-to DC for alternating current AC.
Known existing AC-DC equipment, the adjusting of output voltage is a resistance-type potentiometer simple realization based on equipment, this mode cannot be applied to the electric power system that needs scheduling controlling.
The information that is disclosed in this utility model background technology part is only intended to deepen the understanding to general background technology of the present utility model, and should not be regarded as admitting or imply that in any form this information structure has been prior art known in those skilled in the art.
Utility model content
The utility model is devoted to solve the problems referred to above relevant with prior art, propose a kind of can remote adjustment, set the method that AC-DC exports, in order to realize easily the scheduling controlling of energy resource supply.
The utility model proposes a kind of separate AC-DC transducer, described separate AC-DC transducer comprises current rectifying and wave filtering circuit, PWM change-over circuit, output pulses transformer, high-frequency impulse rectification circuit, controller, the first electricity isolation device and output voltage regulator.Wherein, the input termination alternating voltage of described current rectifying and wave filtering circuit; Described PWM change-over circuit is connected with the output of described current rectifying and wave filtering circuit, and the output copped wave of described rectifying and wave-filtering is formed to power P WM pulse, carries out power factor correction simultaneously; Described output pulses transformer has former end/time end turn ratio that design needs, and is connected with the output of described PWM change-over circuit, and the voltage of described PWM change-over circuit output is converted to time end from the former end of described output pulses transformer; Described high-frequency impulse rectification circuit is connected with time end of described output pulses transformer, and the output pulses of time end output to described output pulses transformer carries out rectification; Described controller is connected with described PWM change-over circuit, and is connected with described high-frequency impulse rectification circuit by the first electricity isolation device; Described the first electricity isolation device is connected between described high-frequency impulse rectification circuit and described controller; Described output voltage regulator comprises: the transformation of scale circuit of voltage sampling, voltage comparator, D/A converter, the second electricity isolation device, the 4th electricity isolation device, wherein, the transformation of scale circuit of described voltage sampling is connected with the output of described high-frequency impulse rectification circuit, and the output voltage of described circuit of synchronous rectification is sampled to normalized; The input of described D/A converter is connected with controller by the 4th electricity isolation device, and the output of described controller is carried out to D/A conversion; Described voltage comparator has first input end mouth and the second input port, wherein said first input end mouth is connected with the output of described high-frequency impulse rectification circuit, described the second input port is connected with the output of D/A converter, and the output of described voltage comparator is connected with controller by the second electricity isolation device; Described the second electricity isolation device is connected between described voltage comparator and described controller; Described the 4th electricity isolation device is connected between described D/A converter and described controller.
Alternatively, separate AC-DC transducer has current control device, described current control device comprises current sampling circuit, current loop circuit, and the 3rd electricity isolation device, wherein, described current sampling circuit is connected with the output of described high-frequency impulse rectification circuit, and the output direct current of described high-frequency impulse rectification circuit is carried out to current sampling; The input of described current loop circuit is connected with the output of described current sampling circuit, and input is connected with described controller by the 3rd electricity isolation device; Described the 3rd electricity isolation device is connected between described current loop circuit and described controller.Described controller is controlled the output direct current of described impulse commutation circuit according to the output valve of described current loop circuit.
Alternatively, separate AC-DC transducer has the simulation control line of input analog voltage amount, and described output voltage regulator and described controller are according to via the analog voltage amount of described simulation control line input, the output voltage of described AC-DC transducer being regulated.
Alternatively, separate AC-DC transducer has the communication bus of remote setting voltage-target, described communication bus is connected with described controller by isolation R-T unit, described controller produces the value corresponding with described voltage-target according to the tables of data that is stored in described controller inside and exports described output voltage regulator to, and the output voltage of described AC-DC transducer is regulated.
Alternatively, separate AC-DC transducer has the protective device to output overvoltage, overcurrent, short circuit and equipment excess temperature, and the execution unit of described protective device is power switch.
Alternatively, the described simulation control line of separate AC-DC transducer communicates the operating state of described AC-DC transducer and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback to upper control main frame.
Alternatively, the described communication bus of separate AC-DC transducer communicates the operating state of described AC-DC transducer and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback to upper control main frame.
Separate AC-DC the transducer the utility model proposes, has the function of output voltage being carried out to remote adjustment, can be conveniently used in needing in the electric power system of scheduling controlling.
Method and apparatus of the present utility model has other characteristic and advantage, these characteristics and advantage will be apparent from the accompanying drawing that is incorporated herein and embodiment subsequently, or will in the accompanying drawing being incorporated herein and embodiment subsequently, state in detail, these the drawings and specific embodiments are jointly for explaining certain principles of the present utility model.
Accompanying drawing explanation
By including accompanying drawing herein in and being used from subsequently the embodiment of explanation some principle of the present utility model with accompanying drawing one, the further feature that device of the present utility model has and advantage will become clear or more specifically be illustrated.
Fig. 1 is according to the structural representation of separate AC-DC transducer of the present utility model.
Reference numeral:
Current rectifying and wave filtering circuit 1
PWM change-over circuit 2
Output pulses transformer 3
High-frequency impulse rectification circuit 4
Controller 5
The transformation of scale circuit 6 of voltage sampling
Voltage comparator 7
D/A converter 8
Current sampling circuit 9
Current loop circuit 10
Isolation R-T unit 11
Communication bus 12
Output voltage regulator 15
Current control device 16
The first electricity isolation device 21
The second electricity isolation device 22
The 3rd electricity isolation device 23
The 4th electricity isolation device 24.
Embodiment
A lot of details are set forth in the following description so that fully understand the utility model.But the utility model can be implemented to be much different from alternate manner described here, those skilled in the art can do similar popularization without prejudice to the utility model intension in the situation that, and therefore the utility model is not subject to the restriction of following public specific embodiment.
Fig. 1 has according to of the present utility model a structural representation that output voltage is carried out to separate AC-DC transducer of remote adjustment function.
As shown in Figure 1, separate AC-DC transducer comprises transformation of scale circuit 6, voltage comparator 7, D/A converter 8, current sampling circuit 9, current loop circuit 10, isolation R-T unit 11, the first electricity isolation device 21, the second electricity isolation device 22, the second electricity isolation device 22 and the 4th electricity isolation device 24 of current rectifying and wave filtering circuit 1, PWM change-over circuit 2, output pulses transformer 3, high-frequency impulse rectification circuit 4, controller 5, voltage sampling.
Current rectifying and wave filtering circuit 1, PWM change-over circuit 2, output pulses transformer 3, high-frequency impulse rectification circuit 4 are connected in series successively.Wherein, alternating voltage Vin enters this separate AC-DC transducer from the input of current rectifying and wave filtering circuit 1, and first current rectifying and wave filtering circuit 1 carries out rectification and filtering to it, the driving voltage of output direct current.The duty ratio of the pulse control signal that PWM change-over circuit 2 is exported by control current rectifying and wave filtering circuit 1 changes the electric current of the former end that inputs to output pulses transformer 3.The alternating voltage of time end output of output pulses transformer 3 is through the rectification of high-frequency impulse rectification circuit 4, output dc voltage.Controller 5 is connected with PWM change-over circuit 2, PWM change-over circuit 2 is controlled, and be connected with high-frequency impulse rectification circuit 4 by the first electricity isolation device 21, can realize electrical isolation.
Therefore current rectifying and wave filtering circuit 1, PWM change-over circuit 2, output pulses transformer 3, high-frequency impulse rectification circuit 4, controller 5 and the first electricity isolation device 21 can be realized the most basic function of separate AC-DC, realize AC-DC conversion.
Transformation of scale circuit 6, voltage comparator 7, D/A converter 8 and second electricity isolation device 22 of voltage sampling formed the output voltage regulator 15 of AC-DC transducer.Wherein, the transformation of scale circuit 6 of the voltage sampling that input is connected with the output of high-frequency impulse rectification circuit 4 and D/A converter 8 are connected to respectively first input end mouth and second input port of voltage comparator 7, and D/A converter 8 is connected with controller 5 with the 4th electricity isolation device 24 by the second electricity isolation device 22 respectively with voltage comparator 7, to realize electrical isolation.Wherein, the normalized result that the transformation of scale circuit 6 of voltage sampling is exported inputs to the first input end mouth of voltage comparator 7, the reference voltage Vref that controller 5 is exported is converted to after analog voltage through D/A converter 8, the second input port of input voltage comparator 7, voltage comparator 7 compares two voltages, the deviation voltage that controller 5 is exported according to voltage comparator 7 is controlled the duty ratio of PWM change-over circuit output pulse, realize the tracking to reference voltage Vref, thereby can indirectly realize the adjusting of the voltage of the final output of AC-DC transducer.
Separate AC-DC transducer preferably has simulation control line 13, according to the analog voltage amount of inputting via simulation control line 13, realizes the adjusting to AC-DC converter output voltage by output voltage regulator 15 and controller 5.
Separate AC-DC transducer preferably has communication bus 12, be connected with controller 5 by isolation R-T unit 11 by communication bus 12, utilize the communication bus 12 can remote setting voltage-target, controller 5 produces the value corresponding with voltage-target according to the tables of data that is stored in phase inside and exports output voltage regulator 15 to, this value inputs to voltage comparator 7 equally after the D/A conversion of D/A converter 8, compare with the normalized voltage after the conversion of the transformation of scale circuit 6 of voltage sampling, realize the tracking of the magnitude of voltage to setting, thereby realize the adjusting to AC-DC converter output voltage.
Current sampling circuit 9, current loop circuit 10 and the 3rd electricity isolation device 22 have formed current control device 16, and three is connected in series between high-frequency impulse rectification circuit 4 and controller 5 successively.Controller 5 is controlled the output direct current of high-frequency impulse rectification circuit 4 according to the output valve of current loop circuit 10, can realize current-sharing output, thereby makes multiple AC-DC transducers can be in parallel.
Separate AC-DC transducer preferably has the protective device 14 to output overvoltage, overcurrent, short circuit and equipment excess temperature, and the execution unit of this protective device can be power switch.In the time of output overvoltage, controller 5 switch-off power switches; In the time there is overcurrent, controller 5 switch-off power switches; By the working temperature of detection power switch and the overheat protector of power switch self, when excess temperature can be realized, automatically shut down power switch.
Preferably, separate AC-DC transducer communicates its operating state and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback by simulation control line 13 to upper control main frame.
Alternatively, separate AC-DC transducer communicates its operating state and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback by communication bus 12 to upper control main frame.
Claims (7)
1. separate AC-DC transducer, is characterized in that, described separate AC-DC transducer comprises:
Current rectifying and wave filtering circuit, the input termination alternating voltage of described current rectifying and wave filtering circuit;
PWM change-over circuit, is connected with the output of described current rectifying and wave filtering circuit, and the output copped wave of described rectifying and wave-filtering is formed to power P WM pulse, carries out power factor correction simultaneously;
Output pulses transformer, has former end/time end turn ratio that design needs, and is connected with the output of described PWM change-over circuit, and the voltage of described PWM change-over circuit output is converted to time end from the former end of described output pulses transformer;
High-frequency impulse rectification circuit, is connected with time end of described output pulses transformer, and the output pulses of time end output to described output pulses transformer carries out rectification;
Controller, described controller is connected with described PWM change-over circuit, and is connected with described high-frequency impulse rectification circuit by the first electricity isolation device;
The first electricity isolation device, is connected between described high-frequency impulse rectification circuit and described controller; And
Output voltage regulator, described output voltage regulator comprises:
The transformation of scale circuit of voltage sampling, the transformation of scale circuit of described voltage sampling is connected with the output of described high-frequency impulse rectification circuit, and the output voltage of described circuit of synchronous rectification is sampled to normalized;
D/A converter, the input of described D/A converter is connected with controller by the 4th electricity isolation device, and the output of described controller is carried out to D/A conversion;
Voltage comparator, described voltage comparator has first input end mouth and the second input port, wherein said first input end mouth is connected with the output of described high-frequency impulse rectification circuit, described the second input port is connected with the output of D/A converter, and the output of described voltage comparator is connected with controller by the second electricity isolation device;
The second electricity isolation device, is connected between described voltage comparator and described controller; And
The 4th electricity isolation device, is connected between described D/A converter and described controller.
2. separate AC-DC transducer according to claim 1, is characterized in that having current control device, and described current control device comprises:
Current sampling circuit, described current sampling circuit is connected with the output of described high-frequency impulse rectification circuit, and the output direct current of described high-frequency impulse rectification circuit is carried out to current sampling;
Current loop circuit, the input of described current loop circuit is connected with the output of described current sampling circuit, and input is connected with described controller by the 3rd electricity isolation device;
The 3rd electricity isolation device, is connected between described current loop circuit and described controller;
Wherein, described controller is controlled the output direct current of described impulse commutation circuit according to the output valve of described current loop circuit.
3. separate AC-DC transducer according to claim 1 and 2, it is characterized in that having the simulation control line of input analog voltage amount, described output voltage regulator and described controller are according to via the analog voltage amount of described simulation control line input, the output voltage of described AC-DC transducer being regulated.
4. separate AC-DC transducer according to claim 1 and 2, it is characterized in that having the communication bus of remote setting voltage-target, described communication bus is connected with described controller by isolation R-T unit, described controller produces the value corresponding with described voltage-target according to the tables of data that is stored in described controller inside and exports described output voltage regulator to, and the output voltage of described AC-DC transducer is regulated.
5. separate AC-DC transducer according to claim 1 and 2, is characterized in that having the protective device to output overvoltage, overcurrent, short circuit and equipment excess temperature, and the execution unit of described protective device is power switch.
6. separate AC-DC transducer according to claim 3, is characterized in that described simulation control line communicates the operating state of described AC-DC transducer and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback to upper control main frame.
7. separate AC-DC transducer according to claim 4, is characterized in that described communication bus communicates the operating state of described AC-DC transducer and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback to upper control main frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701504.7U CN203596754U (en) | 2013-11-07 | 2013-11-07 | Isolated ac-dc converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701504.7U CN203596754U (en) | 2013-11-07 | 2013-11-07 | Isolated ac-dc converter |
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| Publication Number | Publication Date |
|---|---|
| CN203596754U true CN203596754U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320701504.7U Expired - Fee Related CN203596754U (en) | 2013-11-07 | 2013-11-07 | Isolated ac-dc converter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107291208A (en) * | 2017-07-12 | 2017-10-24 | 盈帜科技（常州）有限公司 | A kind of uninterrupted host power supply |
| CN107508459A (en) * | 2017-09-04 | 2017-12-22 | 华东泓泽机电设备（昆山）有限公司 | A kind of control circuit of transfer switch |
| CN110492441A (en) * | 2019-08-20 | 2019-11-22 | 大连海事大学 | A kind of DC/DC converter and fault detection method configured with fault detection circuit |
-
2013
- 2013-11-07 CN CN201320701504.7U patent/CN203596754U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107291208A (en) * | 2017-07-12 | 2017-10-24 | 盈帜科技（常州）有限公司 | A kind of uninterrupted host power supply |
| CN107508459A (en) * | 2017-09-04 | 2017-12-22 | 华东泓泽机电设备（昆山）有限公司 | A kind of control circuit of transfer switch |
| CN110492441A (en) * | 2019-08-20 | 2019-11-22 | 大连海事大学 | A kind of DC/DC converter and fault detection method configured with fault detection circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 |