CN105391163B - A kind of power of alterating and direct current power switching device - Google Patents
A kind of power of alterating and direct current power switching device Download PDFInfo
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- CN105391163B CN105391163B CN201510929433.XA CN201510929433A CN105391163B CN 105391163 B CN105391163 B CN 105391163B CN 201510929433 A CN201510929433 A CN 201510929433A CN 105391163 B CN105391163 B CN 105391163B
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- diode
- direct current
- alterating
- power
- voltage
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The present invention relates to alternating current-direct current bidirectional power supply field more particularly to a kind of power of alterating and direct current power switching devices.In power of alterating and direct current power switching device design process, since supplied by AC/DC electricity source is 220V high pressures, and the breakdown reverse voltage of common diode is all lower, therefore it is not considered as diode as switching device, relay, which is allowed for, if using relay to be switched as switching in traditional switching system belongs to high voltage bearing device, however the design of technical solution provided by the invention is then the diode using high voltage, overcome the problem of above-mentioned common diode can be reversed breakdown, and while simplifying circuit structure, solves the problems, such as time slot during traditional power of alterating and direct current power switching.
Description
Technical field
The present invention relates to alternating current-direct current bidirectional power supply field more particularly to a kind of power of alterating and direct current power switching devices.
Background technology
In traditional Power Management Design, supplied by AC/DC electricity system is as shown in Figure 1, wherein use relay to be opened as switching
It closes.Using this mode when carrying out supplied by AC/DC electricity switching, since relay has certain time interval in handoff procedure, because
This causes in this interval, often for electricity output interrupt, can not continuous normal output voltage, as shown in Fig. 2, wherein t1, t2, t3
Timetable is shown with alternating current-direct current switching, and short interruption phenomenon occurs for electricity output as can be seen from FIG..In addition above-mentioned power supply is used
Switching switch in system also needs to cooperation transformer, rectifier bridge and regulator circuit, complicated, and hardware takes up space big and examines
Repair inconvenience.
Invention content
The technical problem to be solved by the present invention is to：Power of alterating and direct current a kind of simple in structure and without time slot is provided to supply
Electrical switching apparatus.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of power of alterating and direct current power switching device, including alternating current source, DC source, the first protection circuit, the second protection electricity
Road, current rectifying and wave filtering circuit, DC-DC conversion circuits, filter circuit and voltage output end；
The DC source is electrically connected by the first protection circuit with the input terminal of DC-DC conversion circuits；
The alternating current source passes sequentially through the input terminal electricity of the second protection circuit, current rectifying and wave filtering circuit and DC-DC conversion circuits
Connection；
The output end of the DC-DC conversion circuits is electrically connected by filter circuit with voltage output end；
It further include diode；The diode is arranged in the logical of the input terminal of the first protection circuit and DC-DC conversion circuits
On the road；The value range of the pressure voltage of the diode is 2.04 times of arrive alternating current source voltage 3.39 times of alternating current source voltage.
The beneficial effects of the present invention are：In power of alterating and direct current power switching device design process, since alternating current-direct current supplies
Power supply is 220V high pressures, and the breakdown reverse voltage of common diode is all lower, therefore is not considered as diode work
For switching device, as used in traditional switching system relay as switching switch if allow for relay and belong to high pressure resistant
Device, however the design of technical solution provided by the invention is then the diode using high voltage, overcomes above-mentioned common two
Pole pipe can be reversed the problem of breakdown, and while simplifying circuit structure, solve traditional power of alterating and direct current power switching
In the process the problem of time slot.
Description of the drawings
Fig. 1 is the structural schematic diagram of the power of alterating and direct current power switching system of background of invention；
Fig. 2 is the V diagram of the voltage output end of the power of alterating and direct current power switching system of background of invention；
Fig. 3 is the structural schematic diagram of the power of alterating and direct current power switching device of the present invention；
Fig. 4 is the V diagram of the voltage output end of the power of alterating and direct current power switching device of the present invention.
Specific implementation mode
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：It is opened as switching using the traditional relay of the diode in place of high voltage
It closes, while solving the problems, such as time slot during traditional power of alterating and direct current power switching, simplifies circuit structure.
Please refer to Fig. 3, a kind of power of alterating and direct current power switching device provided by the invention, including alternating current source, DC source,
One protection circuit, the second protection circuit, current rectifying and wave filtering circuit, DC-DC conversion circuits, filter circuit and voltage output end；
The DC source is electrically connected by the first protection circuit with the input terminal of DC-DC conversion circuits；
The alternating current source passes sequentially through the input terminal electricity of the second protection circuit, current rectifying and wave filtering circuit and DC-DC conversion circuits
Connection；
The output end of the DC-DC conversion circuits is electrically connected by filter circuit with voltage output end；
It further include diode；The diode is arranged in the logical of the input terminal of the first protection circuit and DC-DC conversion circuits
On the road；The value range of the pressure voltage of the diode is 2.04 times of arrive alternating current source voltage 3.39 times of alternating current source voltage.
As can be seen from the above description, the beneficial effects of the present invention are：In power of alterating and direct current power switching device design process
In, since supplied by AC/DC electricity source is 220V high pressures, and the breakdown reverse voltage of common diode is all lower, therefore is not examined
Consider using diode be used as switching device, as in traditional switching system using relay as switch switch if allow for after
Electric appliance belongs to high voltage bearing device, however the design of technical solution provided by the invention is then the diode using high voltage, gram
The problem of above-mentioned common diode can be reversed breakdown is taken, and while simplifying circuit structure, has solved tradition and hand over directly
During the power switching of galvanic electricity source the problem of time slot.
The wherein described pressure voltage is Maximu reverse operating voltage.The minimum value of the pressure voltage of diode is alternating current source voltage
2.04 times, as alternating current source voltage ** 120%*1.2；Wherein numerical value 120% is to consider the issuable forward direction of alternating current source
Fluctuation, causes voltage bigger than normal.1.2 times consider for design selection, it is ensured that the reliability of designed circuit, according to experiment conclusion, and two
The minimum value of the pressure voltage of pole pipe is 2.04 times of alternating current source voltage.The maximum value of the pressure voltage of diode is alternating current source voltage
3.39 times, as alternating current source voltage ** 120%*2.0；2.0 times of economy for allowing for circuit composition.
Further, the first protection circuit is and the concatenated fuse of DC source；It is described second protection circuit be with
The varistor of alternating current source parallel connection.
Further, the model WH250-1000 of the fuse；The model 10D561K of the varistor.
Further, the first protection circuit is arranged on the access of DC source cathode output end；The diode
Anode is electrically connected with the first protection circuit；The cathode of the diode is electrically connected with the anode of the input terminal of DC-DC conversion circuits.
Further, the first protection circuit is arranged on the access of DC source cathode output end；The diode
Cathode is electrically connected with the first protection circuit；The anode of the diode is electrically connected with the cathode of the input terminal of DC-DC conversion circuits.
Further, the value of the pressure voltage of the diode is 2.55 times of alternating current source voltage.The diode it is resistance to
The optimal value of pressure value is 2.55 times of alternating current source voltage, as alternating current source voltage ** 120%*1.5；According to experiment conclusion,
When pressure voltage takes 2.55 times of alternating current source voltage, effect is optimal.
Further, the model V300B28C250B of the DC-DC conversion circuits, the DC-DC conversion circuits it is straight
Stream input range is 180V~375V.
Fig. 3-4 is please referred to, the embodiment of the present invention one is：
As described in Figure 3, operation principle of the present invention is：
Assuming that 2 potential differences of A, B are UAB, 2 potential differences of C, B are UCB, then the U when Alternating Current Power Supply accessesAB>UCB, at this time
Diode is not turned on, direct current supply cut-out, only by Alternating Current Power Supply；Conversely, the U when Alternating Current Power Supply disconnectsAB<UCB, diode at this time
Conducting, direct current supply access, only by direct current supply.In handoff procedure, often powering, output end time domain voltage waveforms are continuous, nothing is rapid
Become.To realize the AC and DC power supply two-way switching of zero-clearance.The condition that the technical program comes into force should generally meet DC voltage≤The breakdown reverse voltage of alternating voltage again and diode>Alternating voltage again.
A kind of power of alterating and direct current power switching device provided by the invention, including alternating current source, DC source, the first protection electricity
Road, the second protection circuit, current rectifying and wave filtering circuit, DC-DC conversion circuits, filter circuit, voltage output end and diode；
The DC source is electrically connected by the first protection circuit with the input terminal of DC-DC conversion circuits；The diode is set
It sets on the access in the first protection circuit with the input terminal of DC-DC conversion circuits；The value range of the pressure voltage of the diode
Optimal value for 2.04 times of arrive alternating current source voltage 3.39 times of alternating current source voltage, the pressure voltage of the diode is alternating current source
2.55 times of voltage.Specifically, the first protection circuit is arranged on the access of DC source cathode output end；The diode
Anode with first protect circuit be electrically connected；The cathode of the diode and the anode of the input terminal of DC-DC conversion circuits are electrically connected
It connects.
The alternating current source passes sequentially through the input terminal electricity of the second protection circuit, current rectifying and wave filtering circuit and DC-DC conversion circuits
Connection；
The output end of the DC-DC conversion circuits is electrically connected by filter circuit with voltage output end；
Wherein, the alternating current source of input terminal is AC220V, DC source DC220V；Diode selects model 1N5408,
Pressure voltage is 1000V；It is direct current that DC-DC conversion circuits, which select the V300B28C250B models of Vicor companies, input range,
180V~375V exports as direct current 28V；An ac link varistor 10D561K in parallel is (as above-mentioned as protection circuit
Second protection circuit)；A fuse WH250-1000 is connected as protection circuit (as above-mentioned first in DC link
Protect circuit)；Current rectifying and wave filtering circuit model selects KBPC3506；The output voltage of final voltage output end is 28V.
When AC220V, DC220V are accessed simultaneously, the rectified filter circuits of AC220V generate potential difference U between A, BAB≈
It is U that 311V, DC220V generate potential difference between C, BCB=220V, it is clear that UAB>UCB, at this time diode be not turned on, only AC220V supply
Electricity；Conversely, when AC220V is powered off suddenly when the t1 moment, this moment UABRapid drawdown, until UAB<UCBWhen=220V, diode current flow,
DC220V can be accessed in time at this time, and keep the output voltage of voltage output end normal by DC-DC conversion circuits.Again conversely, t2
Moment, AC220V restored electricity, this moment UABIt rises sharply, until UABEqual to UCBWhen=220V, diode is no longer turned on, then is cut automatically
It gains Alternating Current Power Supply and cuts off DC220V power supplies.It to sum up analyzes and surveys and see Fig. 4, in AC220V and the mutual handoff procedures of DC220V
In, the voltage of voltage output end is free of discontinuities.(t1, t2, t3 timetable are shown with alternating current-direct current switching action in Fig. 4.)
In conclusion a kind of power of alterating and direct current power switching device provided by the invention, in power of alterating and direct current power switching
In device design process, since supplied by AC/DC electricity source is 220V high pressures, and the breakdown reverse voltage of common diode be all compared with
Low, therefore it is not considered as diode as switching device, as opened as switching using relay in traditional switching system
Pass just allows for relay and belongs to high voltage bearing device, however the design of technical solution provided by the invention is then using high resistance to
The diode of pressure overcomes the problem of above-mentioned common diode can be reversed breakdown, and while simplifying circuit structure, solution
Determined time slot during traditional power of alterating and direct current power switching the problem of.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, include similarly
In the scope of patent protection of the present invention.
Claims (7)
1. a kind of power of alterating and direct current power switching device, which is characterized in that including alternating current source, DC source, the first protection circuit, the
Two protection circuits, current rectifying and wave filtering circuit, DC-DC conversion circuits, filter circuit and voltage output end；
The DC source is electrically connected by the first protection circuit with the input terminal of DC-DC conversion circuits；
The alternating current source passes sequentially through the second protection circuit, current rectifying and wave filtering circuit is electrically connected with the input terminal of DC-DC conversion circuits；
The output end of the DC-DC conversion circuits is electrically connected by filter circuit with voltage output end；
It further include diode；The diode is arranged on the access in the first protection circuit with the input terminal of DC-DC conversion circuits；
The value range of the pressure voltage of the diode is 2.04 times of arrive alternating current source voltage 3.39 times of alternating current source voltage.
2. power of alterating and direct current power switching device according to claim 1, which is characterized in that it is described first protection circuit be
With the concatenated fuse of DC source；The second protection circuit is the varistor in parallel with alternating current source.
3. power of alterating and direct current power switching device according to claim 2, which is characterized in that the model of the fuse
WH250-1000；The model 10D561K of the varistor.
4. power of alterating and direct current power switching device according to claim 1, which is characterized in that the first protection circuit is set
It sets on the access of DC source cathode output end；The anode of the diode is electrically connected with the first protection circuit；The diode
The anode of cathode and the input terminal of DC-DC conversion circuits be electrically connected.
5. power of alterating and direct current power switching device according to claim 1, which is characterized in that the first protection circuit is set
It sets on the access of DC source cathode output end；The cathode of the diode is electrically connected with the first protection circuit；The diode
Anode be electrically connected with the cathode of the input terminal of DC-DC conversion circuits.
6. power of alterating and direct current power switching device according to claim 1, which is characterized in that the pressure voltage of the diode
Value be 2.55 times of alternating current source voltage.
7. power of alterating and direct current power switching device according to claim 1, which is characterized in that the DC-DC conversion circuits
Model V300B28C250B, the direct current input ranges of the DC-DC conversion circuits is 180V~375V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510929433.XA CN105391163B (en) | 2015-12-15 | 2015-12-15 | A kind of power of alterating and direct current power switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510929433.XA CN105391163B (en) | 2015-12-15 | 2015-12-15 | A kind of power of alterating and direct current power switching device |
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| Publication Number | Publication Date |
|---|---|
| CN105391163A CN105391163A (en) | 2016-03-09 |
| CN105391163B true CN105391163B (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510929433.XA Active CN105391163B (en) | 2015-12-15 | 2015-12-15 | A kind of power of alterating and direct current power switching device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107516934B (en) * | 2016-06-17 | 2020-08-21 | 台达电子工业股份有限公司 | Power conversion device and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202798115U (en) * | 2012-06-25 | 2013-03-13 | 广东东研网络科技股份有限公司 | Automatic switching control circuit of alternating current power supply and direct current battery backup power supply |
| CN103872761A (en) * | 2014-04-09 | 2014-06-18 | 厦门玛司特电子工业有限公司 | Switching method of UPS power supplier and UPS power supplier |
| CN203660633U (en) * | 2013-12-04 | 2014-06-18 | 洛阳隆盛科技有限责任公司 | High reliability control switch circuit |
| CN205160202U (en) * | 2015-12-15 | 2016-04-13 | 福建星海通信科技有限公司 | AC/DC power supply auto -change over device that supplies power |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6406493B2 (en) * | 2014-02-05 | 2018-10-17 | テクノナレッジ・システム有限会社 | DC / AC converter control circuit |
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- 2015-12-15 CN CN201510929433.XA patent/CN105391163B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202798115U (en) * | 2012-06-25 | 2013-03-13 | 广东东研网络科技股份有限公司 | Automatic switching control circuit of alternating current power supply and direct current battery backup power supply |
| CN203660633U (en) * | 2013-12-04 | 2014-06-18 | 洛阳隆盛科技有限责任公司 | High reliability control switch circuit |
| CN103872761A (en) * | 2014-04-09 | 2014-06-18 | 厦门玛司特电子工业有限公司 | Switching method of UPS power supplier and UPS power supplier |
| CN205160202U (en) * | 2015-12-15 | 2016-04-13 | 福建星海通信科技有限公司 | AC/DC power supply auto -change over device that supplies power |
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| Publication number | Publication date |
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| CN105391163A (en) | 2016-03-09 |
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