CN205714579U - A kind of wind-driven generator circuit using latch-in relay - Google Patents
A kind of wind-driven generator circuit using latch-in relay Download PDFInfo
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- CN205714579U CN205714579U CN201620583678.1U CN201620583678U CN205714579U CN 205714579 U CN205714579 U CN 205714579U CN 201620583678 U CN201620583678 U CN 201620583678U CN 205714579 U CN205714579 U CN 205714579U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
This utility model provides a kind of wind-driven generator circuit using latch-in relay, including three phase rectifier module, drive power supply and latch-in relay, described three phase rectifier module is for being converted into DC voltage by the three-phase alternating voltage that blower fan exports, the both positive and negative polarity of described DC voltage connects the positive negative input of described driving power supply respectively, the output of this driving power supply connects the coil of described latch-in relay, and described latch-in relay is for accessing three-phase alternating voltage or the DC voltage of three phase rectifier module output of blower fan output.Blower fan is exported threephase AC electric energy or three phase rectifier module DC power output passes through short circuit during the latch-in relay closing of contact, it is achieved thereby that blower fan is exported energy be converted to heat energy, reach the effect of blower fan braking；When blower fan is braked, blower fan output voltage significantly declines, and drives power supply to quit work, and latch-in relay continues to realize blower fan braking protection in the case of coil blackout.
Description
Technical field
This utility model relates to small-sized fan controller technology field, is specifically related to a kind of wind using latch-in relay
Power generator braking circuit.
Background technology
Wind-driven generator refers to drag wind-driven generator frame for movement by the way of applying large energy consumption
Being in state out of service, popular wording allows blower fan can not turn exactly.
Blower fan braking typically occurs in the electric energy that wind speed exceedes wind brake set protection value or blower fan sends and is much larger than
In the case of backend load energy demand.If be not braked, fan blade can turn faster and faster, until exceeding machinery knot
Structure stress and driving, or infringement backend load.
The threephase AC electric energy UVW that blower fan is mainly sent by traditional blower fan braking method is rectified into direct current energy, logical
Cross the on off state of Single-chip Controlling brake switch by the direct current energy short circuit after AC energy UVW or rectification, this part energy
Amount will be consumed by the form of heat energy by the dead resistance of brake switch itself, and brake switch can also concatenate braking electricity
Resistance, to reduce stalling current, a part of heat energy can consume in braking resistor.Brake switch in conventional fan braking method
It is mainly the devices such as MOSFET pipe, IGBT pipe, IGCT, power relay.
Conventional fan braking method cannot realize long-term holding blower fan on-position, institute automatically in the case of driving power-off
The electric energy consumed is more.
Utility model content
This utility model provides a kind of wind-driven generator circuit, uses latch-in relay, in the feelings of coil blackout
Can continue to realize the braking protection of blower fan under condition.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that
A kind of wind-driven generator circuit using latch-in relay, including three phase rectifier module, drive power supply and
Latch-in relay, described three phase rectifier module is for being converted into DC voltage by the three-phase alternating voltage that blower fan exports, and this is straight
The positive pole of stream voltage and the positive pole of the first electric capacity connect, the negative pole of the first electric capacity and the minus earth of DC voltage, described direct current
The both positive and negative polarity of voltage connects the positive negative input of described driving power supply respectively, and the output of this driving power supply connects described self-sustaining relay
The coil of device, described latch-in relay is for accessing the three-phase alternating voltage of blower fan output or the straight of three phase rectifier module output
Stream voltage.
Further, one end of three independent contacts of described latch-in relay connecting fan three-phase alternating voltage respectively
Output, three independent contact other end short circuits.
Further, one end of three independent contacts of described latch-in relay tandem brake resistance one, this system respectively
The other end of galvanic electricity resistance one output of connecting fan three-phase alternating voltage, three independent contact other end short circuits respectively.
Further, the contact of described self-shield relay connects positive pole and the negative pole of DC voltage respectively.
Further, one end, contact tandem brake resistance two of described self-shield relay, another of this braking resistor two
End connects the positive pole of DC voltage, and the contact other end of self-shield relay connects the negative pole of DC voltage.
Further, described driving power supply by the second electric capacity, the 3rd electric capacity, current sampling resistor, the first divider resistance,
Two divider resistances, switching mode power supply transformer, diode, metal-oxide-semiconductor and Switching Power Supply management module composition；
The positive pole of described DC voltage is connected to the positive pole of the second electric capacity, and the negative pole of the second electric capacity is connected to GND, unidirectional current
The positive pole of pressure is connected to one end of switching mode power supply transformer former limit inductance, and the other end of switching mode power supply transformer former limit inductance connects
The drain electrode of metal-oxide-semiconductor, the source electrode of metal-oxide-semiconductor connects one end of current sampling resistor, and one end of current sampling resistor is simultaneously electric with switch
The current detecting port of source control module connects, and the other end of current sampling resistor connects GND, the grid connecting valve of metal-oxide-semiconductor
The driving port of power management module；The former limit inductance of switching mode power supply transformer, metal-oxide-semiconductor, current sampling resistor composition drives electricity
The input major loop in source；
Described DC voltage is by the first divider resistance and the second divider resistance series connection dividing potential drop, and dividing point is connected to switch electricity
The startup voltage detecting port of source control module, by regulating the first divider resistance and the value of the second divider resistance, it is possible to regulation
Starting protection magnitude of voltage VON；Secondary inductance one end of switching mode power supply transformer connects the positive pole of diode, and the negative pole of diode divides
Not Lian Jie the positive pole of coil of the positive pole of the 3rd electric capacity and latch-in relay, the positive pole connecting valve power management of the 3rd electric capacity
The Voltage Feedback port of module, the secondary inductance other end of switching mode power supply transformer, the negative pole of the 3rd electric capacity, latch-in relay
The negative pole of coil be simultaneously connected with GND.
Further, described driving power supply also includes RCD absorption circuit, and this RCD absorption circuit is by loop resistance, loop electricity
Hold and loop diode constituted, the positive pole link circuit resistance of described DC voltage and one end of tank capacitance, loop resistance and
The negative pole of the other end link circuit diode of tank capacitance, the positive pole of loop diode connects the drain electrode of metal-oxide-semiconductor.
From above technical scheme, blower fan is exported threephase AC electric energy by this utility model or three phase rectifier module is defeated
Go out direct current energy and pass through short circuit during the latch-in relay closing of contact, it is achieved thereby that blower fan is exported energy be converted to heat energy,
Reach the effect of blower fan braking；When blower fan is braked, blower fan output voltage significantly declines, and drives power supply to quit work, self-insurance
Hold relay to continue to realize blower fan braking protection, when automatically keeping blower fan on-position, self-insurance in the case of coil blackout
The coil holding relay does not consume any energy.
This utility model can independently control wind-driven generator, it is possible to other any wind-driven generator methods
With the use of, constitute the braking protection of dual or multiple blower fan, have operation lossless, can flexible protection voltage and can structure
Become the advantages such as multiple blower fan braking protection, the reliability of controller of fan, stability and motility can be greatly improved.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of this utility model wind-driven generator circuit, and shows latch-in relay line
4 kinds of detailed description of the invention that the contact of circle connects；
Fig. 2 is the circuit theory diagrams driving power supply in this utility model.
In figure: 1, three phase rectifier module, 2, drive power supply, 3, latch-in relay, 31, coil, 4, braking resistor one, 5,
Braking resistor two, 6, Switching Power Supply management module, 7, RCD absorption circuit, 8, blower fan.
Detailed description of the invention
Below in conjunction with the accompanying drawings a kind of preferred implementation of the present utility model is described in detail.
As it is shown in figure 1, described wind-driven generator circuit is by three phase rectifier module 1, driving power supply 2 and self-sustaining relay
Device 3 is constituted, and described three phase rectifier module 1 is converted into DC voltage DC for the three-phase alternating voltage UVW exported by blower fan 8, should
The positive pole of DC voltage and the positive pole of the first electric capacity C1 connect, the negative pole of the first electric capacity C1 and the minus earth of DC voltage DC.
The both positive and negative polarity of described DC voltage DC connects the positive negative input of described driving power supply 2 respectively, and the output of this driving power supply connects institute
State the coil 31 of latch-in relay 3, described latch-in relay 3 for access blower fan output three-phase alternating voltage UVW or
The DC voltage DC of three phase rectifier module output.
The contact of latch-in relay coil is connected by following four kinds of modes:
Mode 1, one end of three independent contacts of latch-in relay 3 connecting fan three-phase alternating voltage output respectively
UVW, three independent contact other end short circuits.
Mode 2, one end of three independent contacts of latch-in relay 3 tandem brake resistance one, this braking resistor respectively
The other end of one connecting fan three-phase alternating voltage output UVW, three independent contact other end short circuits respectively.
Mode 3, the contact of self-shield relay 3 connects positive pole and the negative pole of DC voltage DC respectively.
Mode 4, one end, contact tandem brake resistance two of self-shield relay 3, the other end of this braking resistor two connects
The positive pole of DC voltage DC, the contact other end of self-shield relay connects the negative pole of DC voltage DC.
Latch-in relay 3 mainly includes that magnetic latching relay, electromagnetic mechanical latch-in relay etc. are at coil blackout
Time also can the relay of holding contact state voluntarily, this latch-in relay is made up of with contact coil equally, its work
Process is as follows: after by voltage drive relay coil, and relay contact will close, and now coil need not excitation electricity
Pressure, contact can under the effect of the magnetic force of permanent magnet or intermediate mechanical device holding contact closure state；In like manner, when
After applying reverse energization voltage to coil, relay contact disconnects, and now coil is again without driving voltage, and contact can be forever
Holding contact off-state under the long magnetic force of Magnet or the effect of intermediate mechanical device.
In described mode 1 and 2, latch-in relay 3 uses the magnetic latching relay of unicoil three independent contact, described
In mode 3 and 4, latch-in relay 3 uses unicoil single contact magnetic latching relay.Magnetic latching relay is just applying at coil
When voltage, the closing of contact, now coil voltage being and not being, contact is all always maintained at closure state, is only applied at coil
During backward voltage, contact just can disconnect, and can be always maintained at off-state, during until coil is applied in forward voltage, and contact
Recover closure state
When the direct current energy of three phase rectifier module 1 output is more than the startup voltage driving power supply 2, power supply 2 is driven to export
Driving voltage, drives the coil 31 of latch-in relay 3, and then the closing of contact of latch-in relay, blower fan is exported electric energy
Be converted to braking resistor and latch-in relay itself and the heat energy of wind turbine power generation machine coil and consume.
As in figure 2 it is shown, described driving power supply 2 by the second electric capacity C2, the 3rd electric capacity C3, current sampling resistor R1, first point
Piezoresistance R2, the second divider resistance R3, switching mode power supply transformer T1, diode D1, metal-oxide-semiconductor Q1 and Switching Power Supply management module 6
Constitute.
The positive pole of described DC voltage DC is connected to the positive pole of the second electric capacity C2, and the negative pole of the second electric capacity C2 is connected to GND,
The positive pole of DC voltage DC is connected to 1 foot of switching mode power supply transformer T1 former limit inductance, switching mode power supply transformer T1 former limit inductance
2 feet connect the drain electrode of metal-oxide-semiconductor Q1, the source electrode of metal-oxide-semiconductor Q1 connects one end of current sampling resistor R1, current sampling resistor R1's
The current detecting port that one end manages module 6 with Switching Power Supply simultaneously is connected, and the other end of current sampling resistor R1 connects GND,
The driving port of the grid connecting valve power management module 6 of metal-oxide-semiconductor Q1；The former limit inductance of switching mode power supply transformer T1, metal-oxide-semiconductor
Q1, current sampling resistor R1 composition drives the input major loop of power supply 2.
Described DC voltage DC is by the first divider resistance R2 and the second divider resistance R3 series connection dividing potential drop, and dividing point is connected to
The startup voltage detecting port of Switching Power Supply management module 6, by regulating the first divider resistance R2's and the second divider resistance R3
Value, it is possible to regulation starting protection magnitude of voltage VON；3 feet of switching mode power supply transformer T1 secondary inductance connect the positive pole of diode D1,
The negative pole of diode D1 connects the positive pole of the 3rd electric capacity C3 and the positive pole of the coil 31 of latch-in relay 3, the 3rd electric capacity respectively
The Voltage Feedback port of the positive pole connecting valve power management module 6 of C3,4 feet of switching mode power supply transformer T1 secondary inductance,
The negative pole of three electric capacity C3, the negative pole of coil 31 of latch-in relay are simultaneously connected with GND.
Described driving power supply 2 also includes RCD absorption circuit 7, and for absorbing the peak voltage of metal-oxide-semiconductor Q1 drain electrode, this RCD inhales
Regain route loop resistance R4, tank capacitance C4 and loop diode D2 to constitute, the positive pole link circuit of described DC voltage DC
Resistance R4 and one end of tank capacitance C4, the other end link circuit diode D2's of loop resistance R4 and tank capacitance C4 is negative
Pole, the positive pole of loop diode D2 connects the drain electrode of metal-oxide-semiconductor Q1.
Described Switching Power Supply management module 6 connects DC voltage DC to obtain running voltage, its grid company with metal-oxide-semiconductor Q1
Connecing to drive Q1 to control reverse exciting switching voltage regulator, dividing point of connecting with R2/R3 starts voltage to realize regulation, connects current sample electricity
One end of resistance R1 realizes current sample, it is achieved drive power supply 2 crosses stream, overload, short-circuit protection function, connects the 3rd electric capacity C3's
Positive pole is to realize voltage close loop feedback.
In the present embodiment, Switching Power Supply management module 6 uses the NCP1255 family chip of ON company, this series core
7th foot voltage of sheet is only when higher than 0.8V, and chip just can start work, and this utility model is first by NCP1255 series core
This function of sheet is applied and is braked defencive function at blower fan.
Specific works flow process of the present utility model is as follows:
First, determining starting protection magnitude of voltage VON, VON can be adjusted according to different blower fan control systems；
Then, the first divider resistance R2 and the resistance value of the second divider resistance R3 and watt level are selected, according to NCP1255
Characteristic draw formulaAccording to formulaThe resistance value of optional resistance R2 and R3,
Select the performance number of resistance R2 and R3 simultaneously；According to formula Judge selected electricity
Resistance size and power are the most suitable, the most i.e. determine resistance and power, otherwise return and continue to select resistance and power big
Little.
Wherein VONFor starting protection voltage, PR2For the R2 watt level selected, PR3For the R3 watt level selected, formula
Concrete meaning as follows:
Starting protection voltage VONWhen dividing potential drop on R2 and R3 is only more than or equal to 0.8V, switch
Power management module just can start work；
According to starting protection voltage VON, the resistance value size of R2 and R3 that selects calculate starting protection electricity
Pressure VONThe current value produced on resistance R2 and R3；
According to starting protection voltage VON, the resistance value of R2 and R3 that selects calculate starting protection voltage
VONThe performance number produced on R2；
According to starting protection voltage VON, the resistance value of R2 and R3 that selects calculate starting protection voltage
VONThe performance number produced on R3；
According to starting protection voltage VON, the startup that calculates of the resistance value of R2 and R3 that selects
Protection voltage VONThe performance number produced on R2 should be less than the performance number of the R2 selected；
According to starting protection voltage VON, the startup that calculates of the resistance value of R2 and R3 that selects
Protection voltage VONThe performance number produced on R3 should be less than the performance number of the R3 selected.
The two condition is set up simultaneously, the resistance value of R2, R3 and power
Sizes values could finally determine, otherwise returns resistance value size and the watt level reselecting R2, R3, until above-mentioned two bar
Till part is set up simultaneously.
Finally, it is judged that whether DC voltage DC is more than VON, if reaching, power initiation output voltage drives self-sustaining relay
Device 3, blower fan is exported the positive and negative of the DC voltage DC of three-phase alternating voltage UVW or the output of three phase rectifier module by latch-in relay
Extremely short road, blower fan 8 enters braking guard mode, and output voltage is less than VON, drives power supply no longer outputting drive voltage, self-sustaining
Relay 3 continues to keep blower fan on-position in the case of not consuming electric energy.Until maintainer is reached the spot, maintenance tradition
After latch-in relay coil being applied reverse energization pulse during blower fan braking method, latch-in relay just can disconnect, thus
Terminate latch-in relay formula blower fan braking method.
The above embodiment is only to be described preferred implementation of the present utility model, not to this practicality
Novel scope is defined, and on the premise of without departing from this utility model design spirit, those of ordinary skill in the art are to this
Various deformation that the technical scheme of utility model is made and improvement, should fall into the protection that claims of the present utility model determine
In the range of.
Claims (7)
1. the wind-driven generator circuit using latch-in relay, it is characterised in that include three phase rectifier module
(1), driving power supply (2) and latch-in relay (3), described three phase rectifier module (1) is for the three-phase alternating current exported by blower fan
Voltage is converted into DC voltage (DC), and the positive pole of this DC voltage (DC) and the positive pole of the first electric capacity (C1) connect, the first electric capacity
(C1) negative pole and the minus earth of DC voltage (DC), the both positive and negative polarity of described DC voltage (DC) connects described driving electricity respectively
The positive negative input in source (2), the output of this driving power supply connects the coil (31) of described latch-in relay (3), described self-sustaining
Relay (3) is for accessing three-phase alternating voltage or the DC voltage (DC) of three phase rectifier module output of blower fan output.
Wind-driven generator circuit the most according to claim 1, it is characterised in that described latch-in relay (3)
One end of three independent contacts the output of connecting fan three-phase alternating voltage, three independent contact other end short circuits respectively.
Wind-driven generator circuit the most according to claim 1, it is characterised in that described latch-in relay (3)
One end of three independent contacts tandem brake resistance one (4) respectively, the other end of this braking resistor one connecting fan three-phase respectively
Alternating voltage exports, three independent contact other end short circuits.
Wind-driven generator circuit the most according to claim 1, it is characterised in that described self-shield relay (3)
Contact connects positive pole and the negative pole of DC voltage (DC) respectively.
Wind-driven generator circuit the most according to claim 1, it is characterised in that described self-shield relay (3)
One end, contact tandem brake resistance two (5), the other end of this braking resistor two connects the positive pole of DC voltage (DC), contact another
End connects the negative pole of DC voltage (DC).
Wind-driven generator circuit the most according to claim 1, it is characterised in that described driving power supply (2) is by second
Electric capacity (C2), the 3rd electric capacity (C3), current sampling resistor (R1), the first divider resistance (R2), the second divider resistance (R3), switch
Mains transformer (T1), diode (D1), metal-oxide-semiconductor (Q1) and Switching Power Supply management module (6) are constituted；
The positive pole of described DC voltage (DC) is connected to the positive pole of the second electric capacity (C2), and the negative pole of the second electric capacity (C2) is connected to
GND, the positive pole of DC voltage (DC) is connected to one end of switching mode power supply transformer (T1) former limit inductance, switching mode power supply transformer
(T1) other end of former limit inductance connects the drain electrode of metal-oxide-semiconductor (Q1), and the source electrode of metal-oxide-semiconductor (Q1) connects current sampling resistor (R1)
One end, the current detecting port that one end of current sampling resistor (R1) manages module (6) with Switching Power Supply simultaneously is connected, and electric current is adopted
The other end of sample resistance (R1) connects GND, the driving port of grid connecting valve power management module (6) of metal-oxide-semiconductor (Q1)；Open
Close the former limit inductance of mains transformer (T1), metal-oxide-semiconductor (Q1), the input master of current sampling resistor (R1) composition driving power supply (2)
Loop；
Described DC voltage (DC) is by the first divider resistance (R2) and the second divider resistance (R3) series connection dividing potential drop, and dividing point connects
To the startup voltage detecting port of Switching Power Supply management module (6), by regulating the first divider resistance (R2) and the second dividing potential drop electricity
The value of resistance (R3), it is possible to regulation starting protection magnitude of voltage VON；Secondary inductance one end of switching mode power supply transformer (T1) connects two poles
The positive pole of pipe (D1), the negative pole of diode (D1) connects the positive pole of the 3rd electric capacity (C3) and the coil of latch-in relay respectively
Positive pole, the Voltage Feedback port of positive pole connecting valve power management module (6) of the 3rd electric capacity (C3), switching mode power supply transformer
(T1) the secondary inductance other end, the negative pole of the 3rd electric capacity (C3), the negative pole of coil of latch-in relay are simultaneously connected with GND.
Wind-driven generator circuit the most according to claim 6, it is characterised in that described driving power supply (2) also includes
RCD absorption circuit (7), this RCD absorption circuit is made up of loop resistance (R4), tank capacitance (C4) and loop diode (D2),
Positive pole link circuit resistance (R4) of described DC voltage (DC) and one end of tank capacitance (C4), loop resistance (R4) and loop
The negative pole of other end link circuit diode (D2) of electric capacity (C4), the positive pole of loop diode (D2) connects metal-oxide-semiconductor (Q1)
Drain electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620583678.1U CN205714579U (en) | 2016-06-15 | 2016-06-15 | A kind of wind-driven generator circuit using latch-in relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620583678.1U CN205714579U (en) | 2016-06-15 | 2016-06-15 | A kind of wind-driven generator circuit using latch-in relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714579U true CN205714579U (en) | 2016-11-23 |
Family
ID=57305513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620583678.1U Withdrawn - After Issue CN205714579U (en) | 2016-06-15 | 2016-06-15 | A kind of wind-driven generator circuit using latch-in relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952581A (en) * | 2016-06-15 | 2016-09-21 | 合肥为民电源有限公司 | Wind driven generator braking circuit and method adopting latching relays |
-
2016
- 2016-06-15 CN CN201620583678.1U patent/CN205714579U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952581A (en) * | 2016-06-15 | 2016-09-21 | 合肥为民电源有限公司 | Wind driven generator braking circuit and method adopting latching relays |
| CN105952581B (en) * | 2016-06-15 | 2019-05-07 | 合肥为民电源有限公司 | A kind of wind-driven generator circuit and method using latch-in relay |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20190507 |
|
| AV01 | Patent right actively abandoned |