CN206041811U - A double feedback multichannel output switch power for variable pitch control ware - Google Patents
A double feedback multichannel output switch power for variable pitch control ware Download PDFInfo
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- CN206041811U CN206041811U CN201621028065.8U CN201621028065U CN206041811U CN 206041811 U CN206041811 U CN 206041811U CN 201621028065 U CN201621028065 U CN 201621028065U CN 206041811 U CN206041811 U CN 206041811U
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Abstract
The utility model provides a double feedback multichannel output switch power for variable pitch control ware to ultracapacitor system is as power module, containing and keeping apart flyback switching power supply topological structure, the vice limit of its anti - violent change depressor contains feedback winding and 6 tunnel output winding that are used for providing power MOS piping energize, both ends accordant connection on the anti - former limit of violent change depressor has switch MOS protection of pipe circuit, the PDM keyer of control switch MOS pipe is the single -ended output formula pulse width modulator of current mode, the voltage output end of feedback winding is by voltage feedback circuit and voltage feedback pin, the current detection pin of current feedback circuit difference feedback connection to PDM keyer, still contain simultaneously the PI regulating circuit of connecting based on PDM keyer to shorten voltage feedback closed loop, the loop -locked reaction time of current feedback, the utility model has the advantages of the structure is succinct, and the circuit stability is good, and the reliability is high, and with low costs.
Description
Technical field
This utility model is related to technical field of wind power generating equipment, and in particular to the power drives neck of Variable-pitch Controller
Domain.
Background technology
Pitch-controlled system is the important component part of wind-driven generator, wherein, Variable-pitch Controller is as requested with specific
Mode controlled motor operates, and is specifically realized with certain sequential ON-OFF by the corresponding power MOS pipe inside Variable-pitch Controller；
In order that each power MOS pipe normal work, it is desirable to provide the regulated power supply of its power demand size；For the wind electricity change paddle of 2MW
Away from controller, pitch-controlled system uses 75V ultracapacitors battery as the supply module of regulated power supply；Regulated power supply it is defeated
Enter voltage range between the full charge pressure 85V of the under-voltage protection voltage 29V and ultracapacitor of Variable-pitch Controller, voltage becomes
Change wider range, voltage regulation factor, load regulation simple currently used for the circuit structure for providing power MOS pipe working power
Difference, overcurrent protection function less effective or meets voltage regulation factor and load regulation, but complex structure, cost compared with
It is high；In order to reach a solution of a problem or improve, we are necessary a kind of new regulated power supply of design.
Utility model content
In order to solve problem above, this utility model provides a kind of simple for structure, voltage output good stability, for becoming
Double feedback multi-output switch power sources of pitch controller.
For achieving the above object, this utility model employs following technical scheme：
For double feedback multi-output switch power sources of Variable-pitch Controller, using ultracapacitor as supply module；Bag
The inverse-excitation type switch power-supply topological structure containing isolation, the secondary of its flyback transformer includes feedback winding and 6 tunnels to be used to provide power
The output winding of metal-oxide-semiconductor turn-on power；Switch metal-oxide-semiconductor protection circuit is connected with the two ends matching of flyback transformer former limit；Control
The PDM keyer of system switch metal-oxide-semiconductor is current mode Single-end output formula pulse width modulator；The voltage output end of feedback winding
By the Voltage Feedback pin of voltage feedback circuit and current feedback circuit difference feedback link to PDM keyer, electric current inspection
Survey pin；Also circuit is adjusted comprising the PI connected based on PDM keyer simultaneously, it is anti-to shorten Voltage Feedback closed loop, electric current
The response time of feedback closed loop.
Further, pressure limiting filtration module is respectively connected between the output two ends of each output winding；Pressure limiting filtration module bag
Containing Zener diode, filter resistance and two filter capacitors；The anode of Zener diode is exported with the low potential side of output winding
End is connected, and the negative electrode of Zener diode is connected with one end of filter resistance；The other end of filter resistance is electric with the height of output winding
Position side outfan is connected；Entirety be connected to the outfan of output winding after the series connection of two filter capacitors, and its be connected in series a little and
Conduct after the negative electrode of Zener diode is connected is connected with power MOS with reference to outfan.
Further, described current feedback circuit includes primary side winding current feedback circuit and feedback winding current feedback
Circuit；Primary side winding current feedback circuit includes the sample resistance being serially connected between switch metal-oxide-semiconductor source electrode and supply module negative pole；
Feedback winding current feedback circuit is comprising feedback diode, feedback regulation pipe and adjusts resistance；The anode of feedback diode with it is anti-
Feedback winding output be connected, the negative electrode of feedback diode is connected with the negative electrode of feedback regulation pipe, the anode of feedback regulation pipe with take
One end that sample resistant series are connected to sample resistance with switch metal-oxide-semiconductor source electrode；The anode of feedback regulation pipe connects with resistance is adjusted
One end be connected to the current detecting pin of PDM keyer.
Further, the outfan of the PDM keyer is connected to the grid of switch metal-oxide-semiconductor through bleeder circuit,
And clamping unit is connected between the grid and the negative pole of supply module of switch metal-oxide-semiconductor, for grid voltage is adjusted in pulsewidth
Control voltage scope of the clamper in cut-off switch metal-oxide-semiconductor during controller output cut-off signals processed.
Further, also comprising input rectifying filtration module, its one end is connected with the positive pole of supply module, the other end with it is anti-
The input of sharp transformer primary side is connected.
Further, it is connected between the power pins of the input and PDM keyer of flyback transformer former limit
Start-up circuit.
Further, feedback winding is connected to the power supply of PDM keyer through commutation diode and 3.3V stabilivolts
Pin.
Further, the output voltage of feedback winding is 15V, and each high-potential output end for exporting winding is with which with reference to output
Voltage between end be 15V, electronegative potential outfan and with reference to the voltage between outfan be -5V.
This utility model devises opening comprising multiple-channel output winding according to the quantity and optimal drive voltage of power MOS pipe
Powered-down source, it is simple structure, compact；Based on current-control type PDM keyer, output ensure that by voltage feedback circuit
Stablizing for voltage, serves output overcurrent protection by current feedback circuit, and ensure that voltage close loop control by PI regulation circuits
The dynamically adapting of system and closed-loop current control, realizes stablizing for output voltage；Clamping unit ensure that the switching of switch metal-oxide-semiconductor
Agile property, circuit are more reliable.
Compared to prior art, this utility model has the advantages that：
Simple for structure, circuit stability is good, and reliability is high, and low cost.
Description of the drawings
Circuit theory diagrams of the Fig. 1 for embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is further illustrated to the technical scheme in this utility model.
A kind of double feedback multi-output switch power sources for Variable-pitch Controller, using ultracapacitor as power supply mould
Block；Comprising isolation inverse-excitation type switch power-supply topological structure, as shown in figure 1, the secondary of its flyback transformer includes feedback winding
（14-11）And 6 tunnel be used to provide the output winding of power MOS pipe turn-on power；Connect in the two ends matching of flyback transformer former limit
Be connected to switch metal-oxide-semiconductor protection circuit, as shown in figure 1, described switch metal-oxide-semiconductor protection circuit by R2, C6, C4, C11, R6, R7,
D7 separately constitutes the negative pole-BATT that RC network is connected to supply module, when switch metal-oxide-semiconductor Q1 opening and shut-off in high speed
During, former limit Transformer Winding can produce a very big backward voltage, it is easy to damage switch metal-oxide-semiconductor Q1, these circuits
In switch the opening of metal-oxide-semiconductor, turn off process, buffering high pressure can be played, absorb and discharge the effect of peak voltage；Control is opened
The PDM keyer for closing metal-oxide-semiconductor is current mode Single-end output formula pulse width modulator, preferably, using UCx843 systems
Row chip used as PDM keyer, very well, amplify for its voltage regulation factor and load regulation characteristic by the error of chip internal
Device, current sense comparator can respectively constitute voltage close loop control and closed-loop current control；1 foot of PDM keyer U1 is
The outfan of error amplifier, 2 feet are Voltage Feedback pin, the i.e. inverting input of chip U1 internal errors amplifier；Chip
3 feet be current detecting pin；The voltage output end of feedback winding is fed back respectively by voltage feedback circuit and current feedback circuit
It is connected to Voltage Feedback pin, the current detecting pin of PDM keyer；1 foot and 2 feet of PDM keyer U1 it
Between be connected with electric capacity C18, and the negative pole of supply module, the internal junction with PDM keyer U1 are connected to through resistance R14
Structure together constitutes PI and adjusts circuit, to shorten the control response time of Voltage Feedback closed loop, current feedback closed loop.
Pressure limiting filtration module is respectively connected between the output two ends of each output winding；Pressure limiting filtration module includes two pole of voltage stabilizing
Pipe, filter resistance and two filter capacitors；The anode of Zener diode is connected with the low potential side outfan of output winding, voltage stabilizing
The negative electrode of diode is connected with one end of filter resistance；The other end of filter resistance and the hot side outfan phase for exporting winding
Even；Entirety be connected to the outfan of output winding after the series connection of two filter capacitors, and its be connected in series a little with Zener diode
Conduct after negative electrode is connected is connected with power MOS with reference to outfan；The high-potential output end of each output winding refers to outfan with which
Between voltage be 15V, electronegative potential outfan and with reference to the voltage between outfan be -5V；Feedback winding is defeated Jing after D16 rectifications
Go out 15V voltages.
Described current feedback circuit includes primary side winding current feedback circuit and feedback winding current feedback circuit；Former limit
Winding current feedback circuit includes the sample resistance R16 being serially connected between switch metal-oxide-semiconductor source electrode and supply module negative pole；Feedback around
Group current feedback circuit includes feedback diode D20, feedback regulation pipe D21 and regulation resistance R13；The sun of feedback diode D20
Pole is connected with the output of feedback winding, and the negative electrode of feedback diode D20 is connected with the negative electrode of feedback regulation pipe D21, feedback regulation
The anode of pipe D21 is connected serially to one end that sample resistance is connected with switch metal-oxide-semiconductor Q1 source electrodes with sample resistance R16；Feedback regulation pipe
One end that the anode of D21 is connected with regulation resistance R16 is connected to the current detecting pin of PDM keyer U1；Transformer primary
The magnitude of current is mainly changed into voltage from sample resistance R16 by side winding current feedback, and transformer primary side inductive current flows through the electricity
The filtered rear foot 3 for sending into U1 of voltage that resistance is produced, constitutes current control closed loop；When there is overcurrent in switching tube Q1, resistance
The overcurrent signal measured on R16, is transported to the homophase input end of amperometric determination comparator, as long as the voltage on R16 reaches 1V,
Amperometric determination comparator action, turns off switching tube by PWM latch, realizes excess current protective function；And feedback winding
The 0.3V pressure drops through D20 are exported, the voltage of feedback output is finally added to current feedback by feedback regulation pipe D21 pressure drop 18V
End, normally should be within 1V, when output overvoltage is fed back, i.e., when output is more than 20V, then chip will stop output, real
Existing overcurrent protection；Dual overcurrent protection can detect transformator input and output electric current in real time, realize duplicate protection.
The outfan of the PDM keyer is connected to the grid of switch metal-oxide-semiconductor through bleeder circuit, and in switch
Clamping unit, i.e. clamp diode D22 are connected between the negative pole of the grid and supply module of metal-oxide-semiconductor Q1, due to switching metal-oxide-semiconductor
Input capacitance it is higher, switch metal-oxide-semiconductor Q1 high speed break-makes during（It is the discharge and recharge to metal-oxide-semiconductor electric capacity）, electric discharge
Speed is much unable to catch up with the speed for charging.After grid adds clamper diode D22, when high level is exported, metal-oxide-semiconductor is switched
Q1 is turned on, D22 shut-offs；When low level is exported, switch metal-oxide-semiconductor shut-off, now, metal-oxide-semiconductor grid point position is clamped to below 0V
（- 0.3V), for switch metal-oxide-semiconductor input capacitance is capable of achieving quickly to discharge, it is to charge next time with preparing.
Input rectifying filtration module is also included, is made up of 100nk 250v CBB electric capacities C3, commutation diode D2, mould of powering
Positive pole+the BATT of block is connected with the anode of commutation diode D2, and the negative electrode of commutation diode D2 is defeated with flyback transformer former limit
Enter end to be connected.
Start-up circuit is connected between the power pins of the input and PDM keyer of flyback transformer former limit；
Start-up circuit is made up of R3, C7, C8, R9, light emitting diode D13；When circuit is just switched on, C7 and C8 are started to charge up, when
When its voltage in parallel is charged to U1 startup voltages, circuit start, starting current are only 1mA；I.e. when the electricity on electric capacity C7, C8
When pressure starts voltage higher than U1, chip U1 starts working, and this avoid the momentary spikes voltage for being just switched on power supply to chip U1
Infringement；Chip U1 is provided by feedback winding after starting and is maintained chip normal work required voltage.When circuit once normal work
Make, the self-powered to chip U1 is carried out by feedback winding；Voltage in feedback winding is through D18 rectifications, and separates 0.7V voltages,
Through 3.3V stabilivolt D17, then through C8, C7 decoupling capacitor, 16V power supplys are provided to chip U1；One small capacitances and one are big
Electric capacity is while earth so that two-channel structure reduces the impedance of power supply in broader frequency range, to improve the property of power supply
Energy；Light emitting diode D13 is used as power supply indicator, and R9 is the protective resistance of light emitting diode D13.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
This utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent, without deviating from the objective and model of technical solutions of the utility model
Enclose, which all should be covered in the middle of right of the present utility model.
Claims (8)
1. double feedback multi-output switch power sources of Variable-pitch Controller are used for, using ultracapacitor as supply module；Comprising
Isolation inverse-excitation type switch power-supply topological structure, it is characterised in that：The secondary of its flyback transformer includes feedback winding and 6 tunnels to be used for
The output winding of power MOS pipe turn-on power is provided；Switch metal-oxide-semiconductor protection is connected with the two ends matching of flyback transformer former limit
Circuit；The PDM keyer of controlling switch metal-oxide-semiconductor is current mode Single-end output formula pulse width modulator；The voltage of feedback winding
Outfan by voltage feedback circuit and current feedback circuit difference feedback link to PDM keyer Voltage Feedback pin,
Current detecting pin；Simultaneously also adjust circuit comprising the PI connected based on PDM keyer, with shorten Voltage Feedback closed loop,
The response time of current feedback closed loop.
2. double feedback multi-output switch power sources of Variable-pitch Controller are used for according to claim 1, it is characterised in that：Respectively
Pressure limiting filtration module is respectively connected between the output two ends of output winding；Pressure limiting filtration module includes Zener diode, filtered electrical
Resistance and two filter capacitors；The anode of Zener diode is connected with the low potential side outfan of output winding, Zener diode
Negative electrode is connected with one end of filter resistance；The other end of filter resistance is connected with the hot side outfan of output winding；Two
Entirety the outfan of output winding is connected to after filter capacitor series connection, and which is connected in series
Conduct afterwards is connected with power MOS with reference to outfan.
3. double feedback multi-output switch power sources of Variable-pitch Controller are used for according to claim 2, it is characterised in that：Institute
The current feedback circuit stated includes primary side winding current feedback circuit and feedback winding current feedback circuit；Primary side winding electric current is anti-
Current feed circuit includes the sample resistance being serially connected between switch metal-oxide-semiconductor source electrode and supply module negative pole；Feedback winding current feedback electricity
Road is comprising feedback diode, feedback regulation pipe and adjusts resistance；The anode of feedback diode is connected with the output of feedback winding, instead
The negative electrode of feedback diode is connected with the negative electrode of feedback regulation pipe, and anode and the sample resistance of feedback regulation pipe are connected serially to sample resistance
The one end connected with switch metal-oxide-semiconductor source electrode；One end that the anode of feedback regulation pipe is connected with regulation resistance is connected to pulsewidth modulation
The current detecting pin of controller.
4. double feedback multi-output switch power sources of Variable-pitch Controller are used for according to claim 3, it is characterised in that：Institute
The outfan for stating PDM keyer is connected to the grid of switch metal-oxide-semiconductor through bleeder circuit, and in the grid of switch metal-oxide-semiconductor
Clamping unit is connected with and the negative pole of supply module between, for grid voltage is exported cut-off signals in PDM keyer
Control voltage scope of the period clamper in cut-off switch metal-oxide-semiconductor.
5. double feedback multi-output switch power sources of Variable-pitch Controller are used for according to claim 4, it is characterised in that：Also
Comprising input rectifying filtration module, its one end is connected with the positive pole of supply module, the input of the other end and flyback transformer former limit
End is connected.
6. double feedback multi-output switch power sources of Variable-pitch Controller are used for according to claim 5, it is characterised in that：
Start-up circuit is connected between the power pins of the input and PDM keyer of flyback transformer former limit.
7. double feedback multi-output switch power sources of Variable-pitch Controller are used for according to claim 6, it is characterised in that：Instead
Feedback winding is connected to the power pins of PDM keyer through commutation diode and 3.3V stabilivolts.
8. double feedback multi-output switch power sources of Variable-pitch Controller are used for according to any one of claim 1 to 7, and which is special
Levy and be：The output voltage of feedback winding is 15V, the high-potential output end of each output winding and its refer to the electricity between outfan
Press for 15V, electronegative potential outfan and with reference to the voltage between outfan be -5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621028065.8U CN206041811U (en) | 2016-08-31 | 2016-08-31 | A double feedback multichannel output switch power for variable pitch control ware |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621028065.8U CN206041811U (en) | 2016-08-31 | 2016-08-31 | A double feedback multichannel output switch power for variable pitch control ware |
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| Publication Number | Publication Date |
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| CN206041811U true CN206041811U (en) | 2017-03-22 |
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| CN201621028065.8U Expired - Fee Related CN206041811U (en) | 2016-08-31 | 2016-08-31 | A double feedback multichannel output switch power for variable pitch control ware |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160498A (en) * | 2016-08-31 | 2016-11-23 | 重庆佩特电气有限公司 | Double feedback multi-output switch power sources for Variable-pitch Controller |
| CN107346102A (en) * | 2017-08-22 | 2017-11-14 | 南京越博电驱动系统有限公司 | A kind of major-minor single-chip microcomputer entire car controller |
| CN111245198A (en) * | 2018-11-28 | 2020-06-05 | 浙江宇视科技有限公司 | Auxiliary source circuit and isolating switch power supply |
-
2016
- 2016-08-31 CN CN201621028065.8U patent/CN206041811U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160498A (en) * | 2016-08-31 | 2016-11-23 | 重庆佩特电气有限公司 | Double feedback multi-output switch power sources for Variable-pitch Controller |
| CN107346102A (en) * | 2017-08-22 | 2017-11-14 | 南京越博电驱动系统有限公司 | A kind of major-minor single-chip microcomputer entire car controller |
| CN111245198A (en) * | 2018-11-28 | 2020-06-05 | 浙江宇视科技有限公司 | Auxiliary source circuit and isolating switch power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20190831 |