CN201341015Y - Overvoltage protector for self excited generator - Google Patents
Overvoltage protector for self excited generator Download PDFInfo
- Publication number
- CN201341015Y CN201341015Y CNU2009200835759U CN200920083575U CN201341015Y CN 201341015 Y CN201341015 Y CN 201341015Y CN U2009200835759 U CNU2009200835759 U CN U2009200835759U CN 200920083575 U CN200920083575 U CN 200920083575U CN 201341015 Y CN201341015 Y CN 201341015Y
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- CN
- China
- Prior art keywords
- thyristor
- triode
- overvoltage
- generator
- transient suppression
- Prior art date
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- Expired - Fee Related
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- Control Of Eletrric Generators (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses an overvoltage protector for a self excited generator for overvoltage protection of a generator. The utility model adopts the technical proposal that the anode of a thyristor V2 is connected with a rectified positive pole P of an excitation circuit and the negative poles of two transient voltage suppressors V4 and V3 which are connected in series; and the cathode of the thyristor V2 is connected with a rectified negative pole N of the excitation circuit and is connected with the basal pole of an audion V1 through a capacitor C1, with the collector of the audion V1 through a resistor R4 and with the positive pole of the transient voltage suppressor V4 through a resistor R2. When the positive sampling voltage obtained by the anode of the thyristor V2 is higher than the set overvoltage protection threshold value, the thyristor V2 is conducted within the set overvoltage response delay time to enable the excitation circuit to be in a short circuit, in this way, the excitation winding can be de-electrified and the generator can stop working, thus achieving overvoltage protection effect. The overvoltage protector is safe and reliable, timely in response, simple in circuitry and low in cost, and has fewer components.
Description
Technical field
The utility model produces novel a kind of generator super-voltage protection circuit that relates to, and is a kind of self-exciter overvoltage protector specifically.
Background technology
Generator regulator of the prior art; be to come regulation voltage by the average current size of regulating on the energizing loop, common overvoltage protection means are the final stage pipes in the breaking circuit, perhaps cut off energized circuit; allow excitation winding not have electric current to pass through, thereby make the generator generation outage.Adopt the method for cutting off energized circuit, need be equipped with the fast reaction relay that can turn-off big electric current, cause the overvoltage protection cost too high.In addition, when generator runs up, if the dynamo governor sudden failure, and generator output voltage jumps rapidly, the response time of its overvoltage protection lags behind, and the overvoltage damage effect forms often, and the overvoltage protection action is not also carried out.
Summary of the invention
In order to reduce cost and the raising reliability; the utility model proposes a kind of self-exciter overvoltage protector; it can be widely applicable for all kinds of self-exciters, avoids prominent surge voltage of unloading load effectively, and has safe and reliable and the response characteristics of real time.
The technical scheme that the utility model is dealt with problems is as follows.
The anode of thyristor V2 connects anodal P after the negative pole of Transient Suppression Diode V3 and the energized circuit rectification respectively, is connected on the collector electrode of triode V1 after the positive pole series connection Transient Suppression Diode V4 of Transient Suppression Diode V3 and the resistance R 1; The control utmost point of thyristor V2 is connected on the emitter of triode V1; Be connected on the base stage of triode V1 behind the negative electrode series capacitance C1 of thyristor V2, be connected on the collector electrode of triode V1 behind the negative electrode series resistance R4 of thyristor V2, be connected on the positive pole of Transient Suppression Diode V4 behind the negative electrode series resistance R2 of thyristor V2; Be connected on the base stage of triode V1 behind the cathode series resistance R3 of voltage stabilizing didoe V5, the negative pole of voltage stabilizing didoe V5 is connected on the positive pole of Transient Suppression Diode V4.
The beneficial effects of the utility model are: owing to adopted devices such as thyristor, Transient Suppression Diode and voltage stabilizing didoe, thereby the device consumption is less, and cost of manufacture is cheap.Simultaneously,, thereby limited collector voltage and the electric current of triode V1, improved the reliability of triode V1 and entire circuit owing to resistance R 1 is connected with the collector electrode of resistance R 4 with triode V1.In addition, be in series with resistance R 2 owing to adopted between the negative pole of the negative electrode of thyristor V2 and voltage-stabiliser tube V5, thereby limited of the effect of the reverse voltage of voltage-stabiliser tube V5 thyristor V2.Advantage safe and reliable, that the response time is short, circuit is simple, device is less and with low cost that the utility model also has.
Description of drawings
The embodiment that provides below in conjunction with accompanying drawing further specifies the utility model.
Accompanying drawing is circuit theory diagrams of the present utility model.
Among the figure, the V1 triode, the V2 thyristor, the V3 Transient Suppression Diode, the V4 Transient Suppression Diode, the V5 voltage stabilizing didoe, R1 resistance, R2 resistance, R3 resistance, R4 resistance, C1 electric capacity, anodal after the rectification of P energizing loop, negative pole after the rectification of N energizing loop.
Embodiment
In the use, circuit working principle of the present utility model is:
In the circuit; Transient Suppression Diode V3 and Transient Suppression Diode V4 have set the overvoltage protection threshold value; resistance R 3 and capacitor C 1 have been set overvoltage response delay time; the anode of thyristor V2 obtains the positive sampled voltage of anodal P after the rectification of generator energizing loop; when this positive sampled voltage is higher than above-mentioned setting overvoltage protection threshold value; in the overvoltage response delay time of setting; thyristor V2 conducting; anodal P is communicated with negative pole N after the rectification of generator energizing loop after making the rectification of generator energizing loop; form the excitation power supply short circuit; the excitation winding removes electricity, and generator shuts down, and the overvoltage protection effect comes into force.Simultaneously, remanent magnetism voltage makes thyristor V2 keep conducting state, to prevent that encouraging winding to clap closes.
In the circuit, voltage stabilizing didoe V5 can finely tune above-mentioned overvoltage protection threshold value, to avoid crest voltage capacitor C 1 is charged in advance; Resistance R 1 and resistance R 4 can limit collector current and the collector voltage of triode V1; Resistance R 2 can limit the reverse voltage of voltage stabilizing didoe V5, has greatly improved the reliability of triode V1 and entire circuit.
Claims (1)
1. self-exciter overvoltage protector, form by diode, triode, power semiconductor switch element, resistance, electric capacity, it is characterized in that: the anode of thyristor V2 connects anodal P after the negative pole of Transient Suppression Diode V3 and the energized circuit rectification respectively, is connected on the collector electrode of triode V1 after the positive pole series connection Transient Suppression Diode V4 of Transient Suppression Diode V3 and the resistance R 1; The control utmost point of thyristor V2 is connected on the emitter of triode V1; Be connected on the base stage of triode V1 behind the negative electrode series capacitance C1 of thyristor V2, be connected on the collector electrode of triode V1 behind the negative electrode series resistance R4 of thyristor V2, be connected on the positive pole of Transient Suppression Diode V4 behind the negative electrode series resistance R2 of thyristor V2; Be connected on the base stage of triode V1 behind the cathode series resistance R3 of voltage stabilizing didoe V5, the negative pole of voltage stabilizing didoe V5 is connected on the positive pole of Transient Suppression Diode V4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200835759U CN201341015Y (en) | 2009-01-21 | 2009-01-21 | Overvoltage protector for self excited generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200835759U CN201341015Y (en) | 2009-01-21 | 2009-01-21 | Overvoltage protector for self excited generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201341015Y true CN201341015Y (en) | 2009-11-04 |
Family
ID=41236558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200835759U Expired - Fee Related CN201341015Y (en) | 2009-01-21 | 2009-01-21 | Overvoltage protector for self excited generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201341015Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271898A (en) * | 2017-06-19 | 2017-10-20 | 江西昌河汽车有限责任公司 | The method for diagnosing and processing fault and system of a kind of generator |
| WO2018113388A1 (en) * | 2016-12-19 | 2018-06-28 | 广东美的制冷设备有限公司 | Motor driving protection device, over-voltage protection method and inverter air conditioner |
| CN109450309A (en) * | 2018-11-20 | 2019-03-08 | 陕西航空电气有限责任公司 | A kind of anti-bat conjunction method based on aviation power system engine controller |
| US10263416B2 (en) | 2012-12-03 | 2019-04-16 | Huawei Technologies Co., Ltd. | Overvoltage protection apparatus and method |
-
2009
- 2009-01-21 CN CNU2009200835759U patent/CN201341015Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10263416B2 (en) | 2012-12-03 | 2019-04-16 | Huawei Technologies Co., Ltd. | Overvoltage protection apparatus and method |
| US11404867B2 (en) | 2012-12-03 | 2022-08-02 | Huawei Techologies Co., Ltd. | Overvoltage protection apparatus and method |
| WO2018113388A1 (en) * | 2016-12-19 | 2018-06-28 | 广东美的制冷设备有限公司 | Motor driving protection device, over-voltage protection method and inverter air conditioner |
| CN107271898A (en) * | 2017-06-19 | 2017-10-20 | 江西昌河汽车有限责任公司 | The method for diagnosing and processing fault and system of a kind of generator |
| CN107271898B (en) * | 2017-06-19 | 2020-03-10 | 江西昌河汽车有限责任公司 | Fault diagnosis processing method and system for generator |
| CN109450309A (en) * | 2018-11-20 | 2019-03-08 | 陕西航空电气有限责任公司 | A kind of anti-bat conjunction method based on aviation power system engine controller |
| CN109450309B (en) * | 2018-11-20 | 2022-05-17 | 陕西航空电气有限责任公司 | Anti-clapping method based on aviation power supply system generator controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20140121 |