CN209658917U - A kind of high pressure of fan paddle-changing system passes through circuit - Google Patents
A kind of high pressure of fan paddle-changing system passes through circuit Download PDFInfo
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- CN209658917U CN209658917U CN201920429082.XU CN201920429082U CN209658917U CN 209658917 U CN209658917 U CN 209658917U CN 201920429082 U CN201920429082 U CN 201920429082U CN 209658917 U CN209658917 U CN 209658917U
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- electrically connected
- power grid
- thyristor
- circuit
- high pressure
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Abstract
The utility model discloses a kind of high pressures of fan paddle-changing system to pass through circuit, including the power grid input unit being electrically connected with external electrical network, in varistor built in power grid input unit, the thyristor being electrically connected with power grid input unit, be electrically connected with thyristor it is soft open control unit, pass through the rectifier bridge that is constituted by a diode in addition there are 24V power module and be electrically connected with thyristor.The high pressure of fan paddle-changing system disclosed in the utility model passes through circuit, and when network voltage is higher than 30%, pitch-controlled system can not shut down for a long time without disconnecting power grid input and continue to execute variable pitch work, avoid fan parking that generated energy is caused to lose.
Description
Technical field
The utility model relates to pitch system of wind driven generator fields, become more particularly to a kind of blower in the field
The high pressure of oar system passes through circuit.
Background technique
The pitch-controlled system of blower is more than that need to disconnect 400V power grid after the 30% of voltage rating 400V defeated in network voltage at present
Enter to protect pitch-controlled system internal components not damaged by high pressure, causes fan parking to cause hair so as to cause pitch-controlled system feathering
Electric quantity loss.Effective high pressure can not be carried out to pass through.
Utility model content
Technical problem to be solved in the utility model, the high pressure for being just to provide a kind of fan paddle-changing system pass through circuit.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution:
A kind of high pressure of fan paddle-changing system passes through circuit, thes improvement is that: including what is be electrically connected with external electrical network
Power grid input unit, in varistor built in power grid input unit, the thyristor being electrically connected with power grid input unit, with thyristor
The soft of electrical connection opens control unit, passes through the rectifier bridge being constituted by a diode in addition there are 24V power module and is electrically connected with thyristor
It connects.
Further, the specified operation voltage of varistor is 550V.
Further, the breakdown reverse voltage of thyristor is 1600V.
The beneficial effects of the utility model are:
The high pressure of fan paddle-changing system disclosed in the utility model passes through circuit, when network voltage is higher than 30%, variable pitch system
System can not shut down for a long time without disconnecting power grid input and continue to execute variable pitch work, avoid fan parking that generated energy is caused to damage
It loses.
Detailed description of the invention
Fig. 1 is the connection relationship diagram of circuit disclosed in the utility model embodiment 1；
Fig. 2 is the connection relationship diagram of power grid input unit in circuit disclosed in the utility model embodiment 1.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Embodiment 1, as shown in Fig. 1-2, present embodiment discloses a kind of high pressures of fan paddle-changing system to pass through circuit, packet
The power grid input unit 1 being electrically connected with external electrical network is included, in varistor 2 built in power grid input unit, with power grid input unit
The thyristor 3 of electrical connection, be electrically connected with thyristor it is soft open control unit 4, in addition there are 24V power modules 5 to pass through by two poles
The rectifier bridge 6 of pipe composition is electrically connected with thyristor.The specified operation voltage of varistor is 550V.The reverse breakdown electricity of thyristor
Pressure is 1600V.
In the present embodiment, the specified operation voltage of varistor is 550V, so that network voltage be allow to be more than volume
Determine long-term work in the range of 400V network voltage 37.5%.When electric network source is more than voltage rating 37.5% or is higher, pressure
Quick resistance can reduce rapidly, so that the power grid inside tripping pitch-controlled system is spaced apart, protect pitch-controlled system internal components.At this time
Pitch-controlled system can make blade return to safe shutdown position by backup power supply feathering.When network voltage is higher than 30%, driving
Device is reduced busbar voltage, busbar voltage is limited to by the soft position control turn on thyristors for opening control IGBT group angle
In reasonable voltage range, to protect pitch-controlled system internal components not damaged.24V power module is used and is constituted by a diode
Rectifier bridge rectified, so that circuit is withstood up to the voltage input of 590V (+47.5%).
Claims (3)
1. a kind of high pressure of fan paddle-changing system passes through circuit, it is characterised in that: the power grid including being electrically connected with external electrical network is defeated
Enter unit, in varistor built in power grid input unit, the thyristor being electrically connected with power grid input unit is electrically connected with thyristor
It is soft open control unit, pass through the rectifier bridge that is constituted by a diode in addition there are 24V power module and be electrically connected with thyristor.
2. the high pressure of fan paddle-changing system passes through circuit according to claim 1, it is characterised in that: the specified of varistor moves
Making voltage is 550V.
3. the high pressure of fan paddle-changing system passes through circuit according to claim 1, it is characterised in that: the reverse breakdown of thyristor
Voltage is 1600V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920429082.XU CN209658917U (en) | 2019-03-30 | 2019-03-30 | A kind of high pressure of fan paddle-changing system passes through circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920429082.XU CN209658917U (en) | 2019-03-30 | 2019-03-30 | A kind of high pressure of fan paddle-changing system passes through circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209658917U true CN209658917U (en) | 2019-11-19 |
Family
ID=68528561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920429082.XU Active CN209658917U (en) | 2019-03-30 | 2019-03-30 | A kind of high pressure of fan paddle-changing system passes through circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209658917U (en) |
-
2019
- 2019-03-30 CN CN201920429082.XU patent/CN209658917U/en active Active
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