CN202503343U - System power supply control apparatus of off-grid wind charging controller - Google Patents
System power supply control apparatus of off-grid wind charging controller Download PDFInfo
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- CN202503343U CN202503343U CN2012201113925U CN201220111392U CN202503343U CN 202503343 U CN202503343 U CN 202503343U CN 2012201113925 U CN2012201113925 U CN 2012201113925U CN 201220111392 U CN201220111392 U CN 201220111392U CN 202503343 U CN202503343 U CN 202503343U
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Abstract
The utility model discloses a system power supply control apparatus of an off-grid wind charging controller. The apparatus comprises a first diode, a second diode, a relay, a controllable electronic switching tube, a voltage comparison circuit, a reference voltage circuit, a voltage sampling circuit and a DC/DC converter; the anode of the first diode is connected to a positive terminal of a direct current busbar voltage after rectification and filtering of aerogenerator three-phase power; the cathode of the first diode is connected to the input terminal of the DC/DC converter through a normally-closed contact of the relay in series connection; the anode of the second diode is connected to the positive terminal of a storage battery and the cathode of the second diode is connected to the input terminal of the DC/DC converter; the output terminal of the DC/DC converter at the other path is respectively connected to one end of the relay coil and the input terminal of the reference voltage circuit. According to the utility model, the apparatus has a simple structure; the cost is low; the power generation efficiency and practicability of the whole off-grid power generation system can be effectively improved; and the service life of the storage battery can be prolonged.
Description
Technical field
The utility model relates to the power supply control apparatus of wind generator system, more specifically says so to be applied to the system's power supply control apparatus from the charge controller of net type wind generator system.
Background technology
From net type wind power generation system is to utilize the stand alone generating system of renewable wind energy for new forms of energy, utilizes storage battery to be the carrier storage energy, is interrupted, unsettled wind energy transformation at ordinary times power storage, provide continuously, stable, power supply is exported reliably.Simple from net type wind power generation system, layout is flexible, and aspects such as resource distribution, technical scheme, performance and price all have its reasonability, greatly remedy the deficiency of conventional electric power, and exploitation is had important significance for theories and practical value from net type wind power generation system.
The shared cost of storage battery is very big in the net type wind power generation system, and it is with high costs particularly to dispose jumbo storage battery, therefore, in net type wind generator system, of crucial importance to the protection of storage battery.At present, adopt by direct battery power basically from system's power supply of net type wind-force charge controller, in case under-voltage phenomenon appears in storage battery; Can not be for normal power supply being provided from net type wind-force charge controller; Wholely quit work forever from net type electricity generation system, the generating efficiency of wind generator system is low, and storage battery gets into the deep discharge process; Can seriously shorten the life-span of storage battery, finally cause battery damage.
Summary of the invention
The utility model is for fear of above-mentioned existing in prior technology weak point; Be necessary to provide a kind of power supply control apparatus from net type wind-force charge controller; When this device can prevent effectively that storage battery from can not provide the working power from the charge control system of net type wind-force charge controller; System can not start problem forever, improves the generating efficiency of whole wind force generating system, and the life-span that prolongs storage battery.
The utility model is characterised in that: a kind of system's power supply control apparatus from net type wind-force charge controller; Comprise first diode, second diode, relay, controllable type electronic switching tube, voltage comparator circuit, reference voltage circuit, voltage sampling circuit, DC/DC converter, it is characterized in that:
The positive pole of said first diode is connected to the anode of the DC bus-bar voltage of wind-driven generator three-phase electricity behind rectifying and wave-filtering; The negative pole of said first diode is connected to the input of DC/DC converter behind the relay normally-closed contact of serial connection; The positive pole of said second diode is connected to the anode of storage battery; The negative pole of said second diode also is connected to the input of DC/DC converter; Described DC/DC converter comprises the output at least one road; One road output of said DC/DC converter is connected to the charge control system from net type wind-force charge controller; Another road output of said DC/DC converter is connected to an end of relay coil, the input of reference voltage circuit respectively, and the output of said reference voltage circuit is connected to the negative input end of voltage comparator circuit, and the input of said voltage sampling circuit is connected to the anode of the DC bus-bar voltage of wind-driven generator three-phase electricity behind rectifying and wave-filtering; The output of said voltage sampling circuit is connected to the positive input terminal of voltage comparator circuit; The output of said voltage comparator circuit is connected to the control end of controllable type electronic switching tube, an end ground connection of said controllable type electronic switching tube, the other end of the other end serial connection relay coil of said controllable type electronic switching tube.
Described first diode is that a diode or a plural diode connection in series-parallel with unidirectional conducting character constitutes the diode with unidirectional conducting character.Described second diode is that a diode or a plural diode connection in series-parallel with unidirectional conducting character constitutes the diode with unidirectional conducting character.
When net type wind generator system has just been started working, the charge control system power supply of leaving net type wind-force charge controller is provided by storage battery; When the terminal voltage of storage battery is relatively hanged down; Be that storage battery power supply can not satisfy under the situation of charge control system power supply; In case the voltage behind the blower fan three-phase electricity input process filter rectifier can satisfy the power reguirements of charge control system, starts wind generator system immediately;
After blower fan output three-phase electricity; Judge through the DC bus-bar voltage behind the current rectifying and wave filtering circuit and the terminal voltage of storage battery; The terminal voltage that is higher than storage battery when DC bus-bar voltage; Then adopt the DC bus-bar voltage power supply of blower fan output three-phase electricity behind current rectifying and wave filtering circuit, reduce storage battery consumption, improve the generating efficiency of whole wind force generating system from net type wind-force charge controller system;
When rotation speed of fan is too fast; The input voltage of blower fan three-phase electricity is too high; When causing DC bus-bar voltage behind the current rectifying and wave filtering circuit too high; DC bus-bar voltage and the output end voltage of reference voltage circuit of voltage comparator after to current rectifying and wave filtering circuit compares judgement; When the magnitude of voltage of voltage sampling circuit output during greater than the reference voltage level of reference voltage circuit, then change power supply into storage battery power supply from net type wind-force charge controller system, improve the stability that leaves net type wind generator system;
When calm, control circuit switches to storage battery power supply, makes from net type wind-force charge controller system to be in holding state, can charge a battery the very first time when wind is arranged; When long-term when calm; Storage battery can not provide when net type wind-force charge controller is worked; Behind the blower fan output AC electricity; Direct current after the alternating current conversion provides the work of wind-force charge controller, avoids causing quitting work from net type electricity generation system owing to storage battery can not provide from the power supply of net type wind-force charge controller from net type wind generator system, improves reliability and practicality from net type wind power generation.
Compared with prior art, the utility model beneficial effect is embodied in:
(1) this device is on the basis of storage battery to charge control system power supply, increased by the wind energy control section of directly supplying power, and for charge control system provides backup battery, improved the reliability from net type wind generator system;
(2) this device is when storage battery is under-voltage, and wind generator system still can start work, improves whole generating efficiency and practicality from net type wind generator system effectively, reduces the probability that storage battery gets into deep discharge simultaneously effectively, prolongs the life-span of storage battery;
(3) this device have simple in structure, cost is low, characteristics that be prone to implement.
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain; But a kind of system's power supply control apparatus from net type wind-force charge controller of the utility model is not limited to embodiment.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Embodiment
With reference to figure 1; The utility model relates to a kind of system's power supply control apparatus from net type wind-force charge controller; Comprise the first diode D1, the second diode D2, relay, controllable type electronic switching tube Q1, voltage comparator circuit 7, reference voltage circuit 6, voltage sampling circuit 5, DC/DC converter 4; The positive pole of the said first diode D1 is connected to the anode BUS+ of the DC bus-bar voltage behind the three-phase electricity current rectifying and wave filtering circuit 2 of wind-driven generator 1, is connected to the input of DC/DC converter 4 behind the negative pole serial connection relay normally-closed contact K1 of the first diode D1; The positive pole of the said second diode D2 is connected to the anode DC+ of storage battery 3, and the negative pole of second diode is connected to the input of DC/DC converter 4;
Described DC/DC converter 4 comprises the output at least one road, and one road output of DC/DC converter 4 is connected to the charge control system 8 from net type wind-force charge controller; One road output of said DC/DC converter 4 is connected to the end of the coil J1 of relay, the input of reference voltage circuit 6 respectively, and the output REF+ of reference voltage circuit 6 is connected to the negative input end of voltage comparator circuit 7; The input of described voltage sampling circuit 5 is connected to the anode BUS+ of the DC bus-bar voltage of wind-driven generator 1 behind three-phase electricity current rectifying and wave filtering circuit 2; The output BUS ' of voltage sampling circuit 5+the be connected to positive input terminal of voltage comparator circuit 7; The output of voltage comparator circuit 7 is connected to the control end of controllable type electronic switching tube Q1; The end ground connection of controllable type electronic switching tube Q1, the other end of the other end serial connection relay coil J1 of controllable type electronic switching tube Q1, in the present embodiment; The controllable type electronic switching tube is selected field-effect transistor; The grid G of field-effect transistor is connected to the output of voltage comparator 7, the source S ground connection of field-effect transistor, and the drain D of field-effect transistor is connected to the other end of relay coil J1.
The described first diode D1 is that a diode or a plural diode connection in series-parallel with unidirectional conducting character constitutes the diode with unidirectional conducting character.The described second diode D2 is that a diode or a plural diode connection in series-parallel with unidirectional conducting character constitutes the diode with unidirectional conducting character.
The concrete operation principle of present embodiment is:
Wherein, the input 1 of blower fan three-phase electricity is U through current rectifying and wave filtering circuit 2 back DC bus-bar voltages
BUS+, the terminal voltage of storage battery 3 is U
DC, reference voltage circuit 6 output end voltages are U
REF+, the output end voltage of voltage sampling circuit 5 is U '
BUS+
First kind of situation, when calm or wind-force is very little, during wind-driven generator 1 three-phase electricity no-output or the brownout of output, when the input 1 of blower fan three-phase electricity through the terminal voltage (U of DC bus-bar voltage behind the current rectifying and wave filtering circuit 2 less than storage battery 3
BUS+<u
DC), storage battery 3 is supplied power through the charge control system 8 of exporting to of DC/DC converter 4 through the second diode D2, guarantees from net type wind generator system ability operate as normal, and charges at the very first time accumulators 3 of blower fan three-phase electricity input 1.
Second kind of situation, DC bus-bar voltage is greater than the terminal voltage (U of storage battery 3 behind blower fan three-phase electricity input 1 process current rectifying and wave filtering circuit 2
BUS+>U
DC), and the output end voltage of voltage sampling circuit 5 less than the output end voltage of reference voltage circuit 6 (U '
BUS+<u
REF+) time, relay normally-closed contact K1 is closed, through the first diode D1, supplies power through the charge control system 8 of exporting to of DC/DC converter 4 behind the blower fan three-phase electricity input 1 process current rectifying and wave filtering circuit 2.
The third situation, when the output end voltage of voltage sampling circuit 5 greater than reference voltage circuit 6 output end voltages (U '
BUS+>U
REF+) time; Voltage comparator circuit 7 output high level drive controllable type electronic switching tube Q1 conducting, make relay coil J1 energising, and relay normally-closed contact K1 breaks off; Storage battery 3 is supplied power through the charge control system 8 of exporting to of DC/DC converter 4 through the second diode D2.
The 4th kind of situation; Storage battery 3 can not provide when net type wind-force charge controller working power, and wind generator system can not start, and relay normally-closed contact K1 is closed; When the blower fan three-phase alternating current is exported; Through the first diode D1, to supply power through the charge control system 8 of exporting to of DC/DC converter 4, wind generator system starts; Begin accumulators 3 chargings from net type wind-force charge controller, guaranteeing can not provide at storage battery 3 still can operate as normal under net type wind-force charge controller working power situation.
The foregoing description only is used for further specifying a kind of system's power supply control apparatus from net type wind-force charge controller of the utility model; But the utility model is not limited to embodiment; Every technical spirit according to the utility model all falls in the protection range of the utility model technical scheme any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. system's power supply control apparatus from net type wind-force charge controller; Comprise first diode, second diode, relay, controllable type electronic switching tube, voltage comparator circuit, reference voltage circuit, voltage sampling circuit, DC/DC converter, it is characterized in that:
The positive pole of said first diode is connected to the anode of the DC bus-bar voltage of wind-driven generator three-phase electricity behind rectifying and wave-filtering; The negative pole of said first diode is connected to the input of DC/DC converter behind the relay normally-closed contact of serial connection; The positive pole of said second diode is connected to the anode of storage battery; The negative pole of said second diode also is connected to the input of DC/DC converter; Described DC/DC converter comprises the output at least one road; One road output of said DC/DC converter is connected to the charge control system from net type wind-force charge controller; Another road output of said DC/DC converter is connected to an end of relay coil, the input of reference voltage circuit respectively, and the output of said reference voltage circuit is connected to the negative input end of voltage comparator circuit, and the input of said voltage sampling circuit is connected to the anode of the DC bus-bar voltage of wind-driven generator three-phase electricity behind rectifying and wave-filtering; The output of said voltage sampling circuit is connected to the positive input terminal of voltage comparator circuit; The output of said voltage comparator circuit is connected to the control end of controllable type electronic switching tube, an end ground connection of said controllable type electronic switching tube, the other end of the other end serial connection relay coil of said controllable type electronic switching tube.
2. a kind of system's power supply control apparatus from net type wind-force charge controller according to claim 1 is characterized in that: described first diode is that a diode or a plural diode connection in series-parallel with unidirectional conducting character constitutes the diode with unidirectional conducting character.
3. a kind of system's power supply control apparatus from net type wind-force charge controller according to claim 1 is characterized in that: described second diode is that a diode or a plural diode connection in series-parallel with unidirectional conducting character constitutes the diode with unidirectional conducting character.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201113925U CN202503343U (en) | 2012-03-23 | 2012-03-23 | System power supply control apparatus of off-grid wind charging controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201113925U CN202503343U (en) | 2012-03-23 | 2012-03-23 | System power supply control apparatus of off-grid wind charging controller |
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| CN202503343U true CN202503343U (en) | 2012-10-24 |
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| CN2012201113925U Expired - Fee Related CN202503343U (en) | 2012-03-23 | 2012-03-23 | System power supply control apparatus of off-grid wind charging controller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915888A (en) * | 2013-01-06 | 2014-07-09 | 上海恒劲动力科技有限公司 | Double-circuit direct-current power supply control device and method |
| CN109217669A (en) * | 2018-10-11 | 2019-01-15 | 合肥科威尔电源系统有限公司 | A kind of superconducting magnet circuit |
-
2012
- 2012-03-23 CN CN2012201113925U patent/CN202503343U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915888A (en) * | 2013-01-06 | 2014-07-09 | 上海恒劲动力科技有限公司 | Double-circuit direct-current power supply control device and method |
| CN109217669A (en) * | 2018-10-11 | 2019-01-15 | 合肥科威尔电源系统有限公司 | A kind of superconducting magnet circuit |
| CN109217669B (en) * | 2018-10-11 | 2024-03-12 | 科威尔技术股份有限公司 | Superconducting magnet power supply circuit |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20200323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |