CN104901417A - Power supply switching apparatus based on rapid thyristor switch - Google Patents
Power supply switching apparatus based on rapid thyristor switch Download PDFInfo
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- CN104901417A CN104901417A CN201510337438.3A CN201510337438A CN104901417A CN 104901417 A CN104901417 A CN 104901417A CN 201510337438 A CN201510337438 A CN 201510337438A CN 104901417 A CN104901417 A CN 104901417A
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Abstract
The invention discloses a power supply switching apparatus based on a rapid thyristor switch. A power supply and a change-over switch are in series connection and are then connected to an input terminal of a thyristor zero-crossing switch; an output terminal of the thyristor zero-crossing switch is successively in series connection with an output isolation switch and a load; the output terminal of a PLC controller is in connection with an input terminal of a thyristor zero-crossing switch driving control plate; an output terminal of the thyristor zero-crossing switch driving control plate is in connection with the thyristor zero-crossing switch input terminal. The power supply comprises a work power supply, a stand-by power supply and a maintenance power supply. The power supply switching apparatus can rapidly track impact load dynamic behaviors, possesses a no-inrush phenomenon and a transition process, can effectively avoid damage of counter potential to power supplies caused by untimely turn-off in the case of power failure, and possesses the advantages of fast operation speed, zero noise, no wearing, large output power, etc.
Description
Technical field
The invention belongs to a kind of power switching device, be specifically related to a kind of power switching device based on high speed thyristor switch.
Background technology
At present, the many employing electricity of existing equipment power switching device grasp the mechanical switch such as device or contactor as switch actuator part, for the failover between power supply.Mechanical switch cannot turn off in time when power failure, and turn-off response overlong time.And equipment power to require when power failure to cut off immediately with equipment for being electrically connected, otherwise power supply is caused to the damage of power device because of back-emf.
Therefore, it is long that existing equipment power switching device also also exists the shutoff corresponding time, and noise is large, is difficult to avoid back-emf to carry out the shortcoming such as destroying to power supply.
Summary of the invention
The present invention proposes for solving prior art Problems existing, its objective is and provides a kind of power switching device based on high speed thyristor switch.
Technical scheme of the present invention is: a kind of power switching device based on high speed thyristor switch, comprise the input being connected to thyristor zero passage switch after power supply is connected with change over switch, the output of thyristor zero passage switch is connected successively and is exported isolating switch, load, the output of PLC is connected with the input of thyristor zero passage switch drived control plate, and the output of thyristor zero passage switch drived control plate is connected with thyristor zero passage switch input.
Described power supply comprises working power, stand-by power supply and maintenance power supply.
Performance loop isolating switch one end in described change over switch is connected with the working power in power supply, the other end is connected with the performance loop thyristor switch input in thyristor zero passage switch, in change over switch for subsequent use/maintenance dual-power transfer switch one end, loop and the stand-by power supply in power supply, overhaul power supply and be connected, the other end is connected with the back-up circuit thyristor switch input in thyristor zero passage switch, and performance loop thyristor switch, back-up circuit thyristor switch output are in parallel.
Described performance loop thyristor switch, back-up circuit thyristor switch are by two antiparallel thyristor compositions.
The present invention can follow the tracks of the dynamic behaviour of impact load fast, has without inrush phenomenon and transient process, can effectively avoid causing back-emf to the destruction of power supply because turning off in time during power failure.There is the advantages such as the speed of service is fast, noiseless, nothing are worn and torn, power output is large.
Accompanying drawing explanation
Fig. 1 is the present invention's electricity theory structure block diagram;
Fig. 2 is the connection diagram of power supply in the present invention, change over switch and thyristor switch;
Fig. 3 is the structural representation of thyristor zero passage switch drived control plate in the present invention;
Fig. 4 is zero passage switch testing circuit figure in Fig. 3;
Fig. 5 is Fig. 3 breaker in middle control circuit figure;
Fig. 6 is pulse amplifier and rectifier circuit figure in Fig. 3;
Fig. 7 is multi-resonant oscillating circuit figure in Fig. 3.
Wherein:
1 power supply 1a working power
1b stand-by power supply 1c overhauls power supply
2 change over switch 3 thyristor zero passage switchs
4 export isolating switch 5 load
6 thyristor zero passage switch drived control plate 7 PLC
8 performance loop isolating switches 9 are for subsequent use/maintenance loop dual-power transfer switch
10 performance loop thyristor switch 11 back-up circuit thyristor switchs
12 zero passage switch testing circuit 13 ON-OFF control circuit
14 pulse amplifiers and rectifier bridge 15 multi-resonant oscillating circuit
16 optical coupler 17 NAND gate logical circuits
18 pulse transformer 19 rectifier bridges
20 Interface Terminal 21 timers.
Embodiment
Below, with reference to drawings and Examples, the present invention is described in detail:
As shown in Figure 1, 2, a kind of power switching device based on high speed thyristor switch, comprise the input being connected to thyristor zero passage switch 3 after power supply 1 is connected with change over switch 2, the output of thyristor zero passage switch 3 is connected successively and is exported isolating switch 4, load 5, and the thyristor zero passage switch drived control plate 6 that PLC 7 controls controls conducting and the disconnection of thyristor zero passage switch 3.Power supply 1 comprises working power 1a, stand-by power supply 1b and maintenance power supply 1c.
Performance loop isolating switch 8 one end in change over switch 2 is connected with the working power 1a in power supply 1, the other end is connected with performance loop thyristor switch 10 input in thyristor zero passage switch 3, in change over switch 2 for subsequent use/maintenance dual-power transfer switch 9 one end, loop and the stand-by power supply 1b in power supply 1 with overhaul power supply 1c and be connected, the other end is connected with back-up circuit thyristor switch 11 input in thyristor zero passage switch 3, and performance loop thyristor switch 10 is connected with output isolating switch 4, load 5 successively with after the parallel connection of back-up circuit thyristor switch 11 output.
Described performance loop thyristor switch 10, back-up circuit thyristor switch 11 often by two antiparallel thyristor compositions, control the conducting of every thyristor respectively, form three-phase thyristor switch.
As shown in Figure 3, described thyristor zero passage switch drived control plate 6 adopts model to be the chip (commercially available) of CF6G-3C, and thyristor zero passage switch drived control plate 6 comprises zero passage switch testing circuit 12, ON-OFF control circuit 13, pulse amplifier and rectifier bridge 14 and multi-resonant oscillating circuit 15.Thyristor zero passage switch drived control plate 6 is powered by straight+15V.
As shown in Figure 4, in zero passage switch testing circuit 12, voltage is added on two antiparallel optical couplers 16 after current-limiting resistance R1, the model of two optical couplers 16 is respectively A301, A302, all be in cut-off state in AC signal zero crossing moment two Light Coupled Device, export corresponding synchronization zero-cross pulse signal by R2, R3.
As shown in Figure 5, after ON-OFF control circuit 13 receives the connection signal of terminal 9, zero passage switch testing circuit 12 synchronously starts to detect, only when output voltage is near zero-crossing point, zero passage switch testing circuit 12 just can export zero passage synchronization pulse, rest-set flip-flop again by being made up of NAND gate logical circuit 17, final output synchronization zero-cross triggering signal.
As shown in Figure 6, first the start pulse signal that multivibrator sends amplifies through triode T1, then undertaken isolating and amplifying by pulse transformer 18, the twice before finally by rectifier bridge 19 frequency being expanded as, trigger impulse is reached through Interface Terminal 20 and drives silicon controlled requirement.
As shown in Figure 7, the multivibrator that the timer 21 being 555 with model is formed for core, can convert direct current to pulse signal, for controllable silicon provides the trigger impulse of high frequency.Wherein, D2 is steering diode, can regulate discharge time constant.
Described PLC 7, for receiving the failover soldier of the order of switching device shifter panel button and control power supply, realizes quick power switching.
The present invention can follow the tracks of the dynamic behaviour of impact load fast, has without inrush phenomenon and transient process, can effectively avoid causing back-emf to the destruction of power supply because turning off in time during power failure.There is the advantages such as the speed of service is fast, noiseless, nothing are worn and torn, power output is large.
Claims (2)
1. the power switching device based on high speed thyristor switch, it is characterized in that: comprise the input being connected to thyristor zero passage switch (3) after power supply (1) is connected with change over switch (2), the output of thyristor zero passage switch (3) is connected successively and is exported isolating switch (4), load (5), the output of PLC (7) is connected with the input of thyristor zero passage switch drived control plate (6), and the output of thyristor zero passage switch drived control plate (6) is connected with the input of thyristor zero passage switch (3), described power supply (1) comprises working power (1a), stand-by power supply (1b) and maintenance power supply (1c), performance loop isolating switch (8) one end in described change over switch (2) is connected with the working power (1a) in power supply (1), the other end is connected with performance loop thyristor switch (10) input in thyristor zero passage switch (3), in change over switch (2) for subsequent use/maintenance dual-power transfer switch (9) one end, loop and power supply (1) in stand-by power supply (1b), maintenance power supply (1c) is connected, the other end is connected with back-up circuit thyristor switch (11) input in thyristor zero passage switch (3), performance loop thyristor switch (10), back-up circuit thyristor switch (11) output is in parallel.
2. the power switching device based on high speed thyristor switch according to claim 1, is characterized in that: described performance loop thyristor switch (10), back-up circuit thyristor switch (11) are by two antiparallel thyristor compositions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510337438.3A CN104901417A (en) | 2015-06-18 | 2015-06-18 | Power supply switching apparatus based on rapid thyristor switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510337438.3A CN104901417A (en) | 2015-06-18 | 2015-06-18 | Power supply switching apparatus based on rapid thyristor switch |
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| Publication Number | Publication Date |
|---|---|
| CN104901417A true CN104901417A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510337438.3A Pending CN104901417A (en) | 2015-06-18 | 2015-06-18 | Power supply switching apparatus based on rapid thyristor switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069935A (en) * | 2017-03-28 | 2017-08-18 | 核工业理化工程研究院 | The power switching device controlled based on PLC |
| CN110349793A (en) * | 2018-08-09 | 2019-10-18 | 安徽合凯电气科技股份有限公司 | One kind being switched fast switching device, system and application |
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|---|---|---|---|---|
| US20030184926A1 (en) * | 2002-04-01 | 2003-10-02 | Uis Abler Electronics Co., Ltd. | Hybrid switch module for an AC power capacitor |
| CN102570590A (en) * | 2012-01-05 | 2012-07-11 | 青岛经济技术开发区创统科技发展有限公司 | Solid-state changeover switch |
| CN202315042U (en) * | 2011-11-01 | 2012-07-11 | 广东电网公司电力科学研究院 | Electrified water-flushing fire extinguishing system and electrified water-flushing fire truck |
| CN202906202U (en) * | 2012-11-27 | 2013-04-24 | 广州供电局有限公司 | Distribution vehicle for ensuring power supply |
| CN204761144U (en) * | 2015-06-18 | 2015-11-11 | 核工业理化工程研究院 | Power supply auto -change over device based on high speed thyristor switch |
-
2015
- 2015-06-18 CN CN201510337438.3A patent/CN104901417A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030184926A1 (en) * | 2002-04-01 | 2003-10-02 | Uis Abler Electronics Co., Ltd. | Hybrid switch module for an AC power capacitor |
| CN202315042U (en) * | 2011-11-01 | 2012-07-11 | 广东电网公司电力科学研究院 | Electrified water-flushing fire extinguishing system and electrified water-flushing fire truck |
| CN102570590A (en) * | 2012-01-05 | 2012-07-11 | 青岛经济技术开发区创统科技发展有限公司 | Solid-state changeover switch |
| CN202906202U (en) * | 2012-11-27 | 2013-04-24 | 广州供电局有限公司 | Distribution vehicle for ensuring power supply |
| CN204761144U (en) * | 2015-06-18 | 2015-11-11 | 核工业理化工程研究院 | Power supply auto -change over device based on high speed thyristor switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069935A (en) * | 2017-03-28 | 2017-08-18 | 核工业理化工程研究院 | The power switching device controlled based on PLC |
| CN110349793A (en) * | 2018-08-09 | 2019-10-18 | 安徽合凯电气科技股份有限公司 | One kind being switched fast switching device, system and application |
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Application publication date: 20150909 |
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| RJ01 | Rejection of invention patent application after publication |