CN201730811U - Photovoltaic water pump controller - Google Patents
Photovoltaic water pump controller Download PDFInfo
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- CN201730811U CN201730811U CN2010201274472U CN201020127447U CN201730811U CN 201730811 U CN201730811 U CN 201730811U CN 2010201274472 U CN2010201274472 U CN 2010201274472U CN 201020127447 U CN201020127447 U CN 201020127447U CN 201730811 U CN201730811 U CN 201730811U
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Abstract
The utility model relates to a photovoltaic water pump controller. The structure of the utility model is that the output end of a solar panel is respectively connected with a switch power supply and a DC / DC circuit; the switch power supply is connected with a control unit, a buffer isolator, a zero-cross comparator, a bus voltage current detection circuit, a temperature detection circuit and a water level detection circuit; the DC / DC circuit is connected with a three-phase inverter bridge and then respectively connected with a brushless DC motor and the zero-cross comparator; the control unit is respectively connected with the buffer isolator, a communication interface, a LCD screen and an indicator light; the buffer isolator is connected with a power drive circuit and then connected with a three-phase inverter bridge circuit, the zero-cross comparator, the bus voltage current detection circuit, the temperature detection circuit and the water level detection circuit; the output ends of the peripheral circuits are all connected with the input end of the control unit. The utility model solves the problem that the constant voltage method, the interference observation method and the conductance adding method have the disadvantages of big error, unstable system and high cost. The utility model is simple in operation and convenient for maintenance, realizing the highest power following algorithm.
Description
Technical field
The utility model belongs to solar photovoltaic water pump control technique field, particularly a kind of photovoltaic water pump controller.
Background technique
In the rural area and the outlying district of unregulated power supply, irrigating needs power supply.For this reason, develop and photovoltaic power generation technology, promptly adopt the photovoltaic water pump control system resource that reasonably taps ground water resources, solved the drinking-water and the agricultural water problem in these areas to a certain extent, this will bring huge ecology and economic benefit to these areas.
But,, hindered photovoltaic water pump system to a certain extent in rural area and backwoodsman popularization because the photovoltaic water pump system average price is relatively more expensive.Main cause on the high side is the cost height of solar panel and storage battery, and solar panel is absolutely necessary, along with the development price decline to some extent of technology.And storage battery mainly is stored energy when strong at sunshine, release energy when weak sunshine, but this does not have essential meaning to most of outlying district, because drinking-water and agricultural water are not to need constantly, unlike electricity needs.In addition, common single storage battery price comparison height, service life are also limited.
Solar cell power generation efficient is also not very high at present, and in order to improve the whole efficiency of system, seeking peak output output is a kind of good method.In order to guarantee all have maximum output under any intensity of sunshine, solar cell is always worked on the peak output point curve.As shown in Figure 1, solar cell output characteristic curve figure is according to solar cell output characteristics and maximum power point curve characteristic.
Before the present utility model, maximal power tracing mode commonly used at present has: constant voltage process (CVT) is followed the tracks of, disturbance observation method (P﹠amp; O), increase conductance method (INC) etc.CVT control is simple and easy to realization, and cost is low, but along with the seasonal variations error ratio is bigger.P﹠amp; O need not to know the array characteristic, needs iterative process, but system can't be stabilized on the maximum power point.INC calculates accurately, well prevents erroneous judgement, but needs the current with high accuracy voltage transducer, and cost is higher.
Summary of the invention
The purpose of this utility model just is to overcome above-mentioned defective, develops a kind of photovoltaic water pump controller.
The technical solution of the utility model is:
The photovoltaic water pump controller, its major technique is characterised in that the solar panel output terminal connects switch power respectively, the input end of DC/DC circuit, the switch power output terminal connects control unit respectively, buffer isolator, the zero passage comparison circuit, the busbar voltage current detection circuit, temperature sensing circuit, water level is beaten dried testing circuit, the DC/DC circuit output end connects the input end of three phase inverter bridge, the output terminal of three phase inverter bridge connects brshless DC motor respectively, the input end of zero passage comparison circuit, the output terminal of control unit connects buffer isolator respectively, communication interface, liquid crystal screen, the input end of tutorial light, the input end of the output termination power driving circuit of buffer isolator, the output terminal of power driving circuit connects the input end of three-phase inversion bridge circuit, zero passage comparison circuit, the busbar voltage current detection circuit, temperature sensing circuit, water level is beaten dried testing circuit, the output terminal of peripheral circuit is all received the input end of control unit.
Advantage of the present utility model and effect are:
1, utilizes solar cell that transform light energy is electric energy,, give brshless DC motor and water pump with energy transfer, water is carried to wet pit by DC/DC transducer, three phase inverter bridge etc. from photovoltaic array output energy.
2, adopt a kind of hardware transform part of DC/DC topological structure, and adopt a kind of maximal power tracing algorithm--follow-on self-adapting hill climbing method, though control algorithm is complicated by computer control, and use comparatively simple, calculate accurately, can be good at realizing peak output output.
3, be applied to the photovoltaic water pump system of no storage battery, reduce cost greatly, need wet pit, be fit to begin work at sunrise, sunset and the working method that ceases also has characteristics such as simple to operate, easy to maintenance in addition.
4, have intelligent protection function, to excess current, overvoltage, undervoltage, beat and problem such as do, temperature is crossed height and can react fast, in time protect the safety of controller.
The utility model has been realized the maximal power tracing function, and the DC/DC circuit also needs to be used with control unit, realizes the maximal power tracing algorithm.
Other advantages of the present utility model and effect will go on to say below.
Description of drawings
Fig. 1---solar cell output characteristic curve schematic representation.
Fig. 2---the utility model circuit theory schematic representation.
Fig. 3---the utility model is used the main program flow schematic representation.
Fig. 4---Zero Crossing Point comparison circuit principle schematic in the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model controller is described further.
As shown in Figure 2:
The utility model is mainly beaten dried testing circuit 6, control unit 16, peripheral circuit 7, Man Machine Interface (tutorial light and keyboard 8, liquid crystal screen 10), communication interface 9, three phase inverter bridge 11, power driving circuit 12, buffer isolator 13, zero passage comparison circuit 14 by DC/DC circuit 2 (Buck circuit), switch power 3, temperature sensing circuit 4, busbar voltage current detection circuit 5, water level and is formed.
Outside solar panel 1 output terminal connects switch power 3 respectively, the input end of DC/DC circuit 2, switch power 3 output terminals connect control unit 6 respectively, buffer isolator 13, zero passage comparison circuit 14, busbar voltage current detection circuit 5, temperature sensing circuit 4, water level is beaten dried testing circuit 6, the input end of DC/DC circuit 2 output termination three phase inverter bridges 11, the output terminal of three phase inverter bridge 11 connects brshless DC motor 15 respectively, the input end of zero passage comparison circuit 14, the output terminal of control unit 16 connects buffer isolator 13 respectively, communication interface 9, liquid crystal screen 10, the input end of tutorial light and keyboard 8, the input end of the output termination power driving circuit 12 of buffer isolator 13, the output terminal of power driving circuit 12 connects the input end of three phase inverter bridge 11 circuit, zero passage comparison circuit 14, busbar voltage current detection circuit 5, temperature sensing circuit 4, water level is beaten dried testing circuit 6, the output terminal of peripheral circuit 7 is all received the input end of control unit 6.
Solar panel 1 output terminal is drawn two line conductors and is inserted the DC/DC circuit 2 of photovoltaic water pump controller and the input end of switch power 3 respectively, and one the tunnel through switch power 3, exports control unit 16, buffer isolator 13, zero passage comparison circuit 14 to; The input end of DC/DC circuit 2 is received on another road, is connected to Hall voltage sensor one end the busbar voltage current detection circuit 5 from DC/DC circuit 2 output terminals, and the other end of Hall current sensor is delivered to three phase inverter bridge 11.
Six PWM pin output terminals of control unit 16 connect the input end of buffer isolator 13, the output terminal of buffer isolator 13 connects the input end of power driving circuit 12, and the output terminal of power driving circuit 12 connects the drain electrode of six metal-oxide-semiconductors in three phase inverter bridge 11 circuit.Three phase inverter bridge 11 is drawn three leads and is connected brshless DC motor (BLDCM) 15, thereby drives water pump.
Also to draw the input end of receiving zero passage comparison circuit 14 from three leads of three phase inverter bridge 11 outputs, its output terminal be connected the external interrupt pin of control unit 16.Thermistor from the radiating fin that connects six metal-oxide-semiconductors leads to the input end of temperature sensing circuit 4, and the output terminal of temperature sensing circuit 4 connects an A/D sampling pin of control unit 16.Draw from the 3rd terminal of Hall current sensor, be connected to the input end of current detection circuit in the busbar voltage current detection circuit 5, the output terminal of current detection circuit is delivered to another A/D sampling pin of control unit 16.Lead to the input end of voltage detecting circuit from the front-end sampling resistance of three phase inverter bridge 11, the output terminal of voltage detecting circuit is connected the 3rd A/D sampling pin of control unit 16.
Three leads of sensed water level are connected to the input end that water level is beaten dried testing circuit 6, are connected to another external interrupt pin of control unit 16 from its output terminal.Peripheral circuit 7 connects the relevant pin of control unit 16; Man Machine Interface (tutorial light and keyboard 8, liquid crystal screen 10) connects the relevant I/O pin of control unit 16; Communication interface 9 connect control units 16 RXD the TXD pin.
At first, the photovoltaic water pump controller is introduced from external solar battery plate 1 output terminal, one the tunnel through switch power 3, and switch power 3 mainly is made of DC-DC DC converting chip UC3842 and peripheral circuit, self-control transformer T1, transformer front end input circlult, transformer front end feeder loop, transformer No. four output circuits, 5V voltage-stabiliser tube LM7805,3.3V voltage stabilizing sheet LM111733.The 1 pin compensation of UC3842 is introduced through R77, R79, C47 by transformer front end feeder loop; 2 pin voltage feed back are to obtain through R77, R82, adjustable resistance R85 dividing potential drop; 3 pin current samplings are to cause Q8 by transformer front end input two-terminal, again from source electrode to small resistor R90, again by obtaining after R87, the C52 filtering; Insert inner vibrator frequency and be connected to 4 pin by R86, C53; 6 pin output control signals to Q8, adjust the transformer input.Transformer four road output winding numbers of turn need be calculated appropriately, and produce four-way power supply: ± 15V/15V/15V/3.3V.Output 3.3V give control unit 16, optocoupler and other device blocks that output two-way 15V gives buffer isolator 13, and output+/-15V gives the amplifier of zero passage comparison circuit 14.
Six PWM pin output terminals of control unit 16 connect the input end of buffer isolator 13, and buffer isolator 13 is made of AND NOT gate SN7404 and high speed photo coupling.6 road PWM waveforms then from control unit 16 outputs, are connected to AND NOT gate, strengthen driving force; Connect high speed photo coupling again, photoelectricity is delivered to power driving circuit 12 after isolating.This circuit mainly is to prevent late-class circuit because control is wrong or other factors cause that electric current is excessive, the positive and negative short circuit of bus, causes circuit, device to burn; Can also prevent in addition that control unit 16 from starting initial or resetting at controller exports high level simultaneously with regard to direct 6 the road.
The output terminal of buffer isolator 13 connects the input end of power driving circuit 12, and power driving circuit 12 mainly is made of power MOSFET integrated drive electronics IR2130 and other auxiliary cicuits.Buffer isolator 13 outputs six tunnel control signals are given the IR2130 input end; Adopt resistance R 63, rheostat R55, capacitor C 3, C32 sample rate current to be delivered to the current detection circuit of IR2130 inside; The IR2130 internal alarm connects control unit 16 pin GPIOA6 at last after 8 pin are connected to optocoupler U15; Obtain by bootstrap technique from the power supply that drives the output driver of high pressure side power MOS (Metal Oxide Semiconductor) device because of 3 road of IR2130 inside,, selected fast recovery diode BYV26E for use in order to prevent the discharge of bootstrap capacitor both end voltage.Use DC/DC to boot in addition, avoided the slow shortcoming of bootstrap capacitor corresponding speed, improved the reliability of system to the suspended power supply power supply.
Behind IR2130 wherein, connect three phase inverter bridge 11 circuit.Three phase inverter bridge 11 is made of 6 MOS switching tubes, 6 fast recovery diodes, goes into three road upper and lower bridge arms.Q2, Q3, Q4 are last brachium pontis, and Q5, Q6, Q7 are following brachium pontis, and 6 fast recovery diodes are connected in parallel on respectively on 6 MOS switching tubes.Go up the drain electrode of brachium pontis MOS switching tube for three and be connected to DC/DC circuit 2 output head anodes together, the source electrode of three following brachium pontis MOS switching tubes is connected to DC/DC circuit 2 negative pole of output end together.The grid of 6 MOS switching tubes is connected to output terminal HG1, HG2, HG3, LG1, LG2, the LG3 of power driving circuit 12 respectively.The centre of three road upper and lower bridge arms is exported U, V respectively, three leads of W connect brshless DC motor (BLDCM) 15, thereby drives water pump.
Receive the input end of DC/DC circuit 2 from another road of external solar battery plate 1 output terminal, shown DC/DC circuit 2 is the Buck reduction voltage circuit, is made up of MOS switching tube Q1, inductance coil L1, diode D2, big capacitor C 2.Solar panel 1 outputs to the source electrode of MOS switching tube Q1, and the drain electrode by the metal-oxide-semiconductor Q1 in the pin connection DC/DC circuit of control unit 16 connects as control signal.Grid connects the end of inductance coil L1, and links to each other with the negative pole of diode D2, and the positive pole of another termination capacitor C 2 of L1 is also drawn as busbar voltage and given inverter bridge, and the other end of D2, C2 links to each other with ground simultaneously.This circuit inductance coil L1 selects extremely important.
Be connected to Hall current sensor one end the busbar voltage current detection circuit 5 from DC/DC circuit 2 output terminals, the other end of Hall current sensor delivered to the both positive and negative polarity of three phase inverter bridge 11, as bus.Also will draw the input end of receiving zero passage comparison circuit 14 from three leads of U, V, W of three phase inverter bridge 11 outputs, zero passage comparison circuit 14 is corresponding to brushless DC motor without position sensor 15.Brshless DC motor 15 is used in the photovoltaic water pump system, because its mechanical property is good, starting torque is big, speed-regulating range width, control are simple relatively, compared with other types motor operational efficiency height.System's fitness for purpose motor operation that pulls the plug in addition, selecting brushless DC motor without position sensor 15 for use is the desirable selections of photovoltaic water pump system.But the detection of rotor-position then is a difficult problem during brshless DC motor 15 runnings, utilizes the back-emf Zero Crossing Point to detect the problem that can solve.Zero passage comparison circuit 14 mainly is by high speed, linear optical coupling, eliminator, compositions such as zero-crossing comparator.As shown in Figure 4, back-emf signal with under the voltage drop, through every straight-through alternating current road elimination DC component, is delivered to zero-crossing comparator behind the process first-order filtering circuit through linear optical coupling again, the signal of Huo Deing is finally delivered to the external interrupt pin of control unit 16 the most at last, so that motor well switches.Because the existence of eliminator is arranged, corresponding hysteresis need be compensated by software in addition.
Thermistor from the radiating fin that connects six metal-oxide-semiconductors leads to the input end of temperature sensing circuit 4, and the output terminal of temperature sensing circuit 4 connects an A/D sampling pin of control unit 16.Temperature sensing circuit 4 is inserted by the thermistor R13 on the controller radiating fin, after adjusting through appropriate voltage, meets the A/D port ANA4 of U5 amplifier LM358 to control unit 16 after being connected to R334, C313, C314 filtering.
5 fens two-part of busbar voltage current detection circuit, the input end of current detection circuit links to each other with the front-end sampling resistance R 4 of three phase inverter bridge 11, after D4, linear optical coupling U2 isolation, step-down is connected to the A/D sampling pin ANA0 of U3 amplifier LM358 to control unit 16; Current detection circuit is to export little electric current through the 3rd terminal of Hall current sensor, meets another the A/D sampling pin ANA1 of U6 amplifier LM358 to control unit 16 after voltage divides crimping R330, R331, C12, C312 filtering.
Three leads of sensed water level are connected to the input end that water level is beaten dried testing circuit 6, are connected to another external interrupt pin of control unit 16 from its output terminal.It is the height that detected current water level by WH, WL, three conductor terminals of CM that water level is beaten dried testing circuit 6, and wherein WH water level in place is the highest, is the water level that water pump is shut down; In the WL water level office, be the water level of water pump start; CM is that common port is at lowermost end.WH connects+the 15V power supply, has a water-head between WH and the WL, constitutes the stagnant ring of water level detecting, in order to avoid cause the frequent switch of motor when water level fluctuates up and down.Whole water level is beaten dried testing circuit 6 and is made up of resistance R 117, R119, capacitor C 65, optocoupler U25, U24 amplifier LM358.
Man Machine Interface (tutorial light and keyboard 8, liquid crystal screen 10) connects the relevant I/O pin of control unit 16; For operator provide controller state indication, related data playback, and parameter easy-to-operat is set etc.Tutorial light is made up of three LED, is respectively DS1 indication operation normally, and the DS2 indication mechanism has fault, and the DS3 indicated water level is beaten to do and reported to the police.The keyboard of tutorial light and keyboard 8 is made of the 4*4 button that chip HD7279 supports.Liquid crystal screen 10 is 12864 realizations by the model of band character library, and it and keyboard are used, and can modification be set to the relevant parameter of control unit 16.
Communication interface 9 connect control units 16 RXD the TXD pin.For software upgrading later on, data upload, networking control provides may.Control unit 16 adopts the driving chip MAX232 that meets the rs-232 standard agreement to communicate.Necessary making alive change-over circuit is chosen resistance and is carried out step-down between chip MAX232 and DSP56F8037.Serial ports is configured to baud rate 9600b/t, a start bit, a position of rest, a parity check bit; The follow-up RS232/RS485 transform interface that uses carries out RS485 protocol transmission signal.
Claims (7)
1. photovoltaic water pump controller, it is characterized in that the solar panel output terminal connects switch power respectively, the input end of DC/DC circuit, the switch power output terminal connects control unit respectively, buffer isolator, the zero passage comparison circuit, the busbar voltage current detection circuit, temperature sensing circuit, water level is beaten dried testing circuit, the DC/DC circuit output end connects the input end of three phase inverter bridge, the output terminal of three phase inverter bridge connects brshless DC motor respectively, the input end of zero passage comparison circuit, the output terminal of control unit connects buffer isolator respectively, communication interface, liquid crystal screen, the input end of tutorial light, the input end of the output termination power driving circuit of buffer isolator, the output terminal of power driving circuit connects the input end of three-phase inversion bridge circuit, zero passage comparison circuit, the busbar voltage current detection circuit, temperature sensing circuit, water level is beaten dried testing circuit, the output terminal of peripheral circuit is all received the input end of control unit.
2. photovoltaic water pump controller according to claim 1 is characterized in that the DC/DC circuit is the Buck reduction voltage circuit, is made up of MOS switching tube Q1, inductance coil L1, diode D2, big capacitor C 2; Solar panel outputs to the source electrode of MOS switching tube Q1, is connected the drain electrode of the metal-oxide-semiconductor Q1 in the DC/DC circuit by a pin of control unit; Grid connects the end of inductance coil L1, and links to each other with the negative pole of diode D2, and the positive pole of another termination capacitor C 2 of L1 is also drawn as busbar voltage and given inverter bridge, and the other end of D2, C2 links to each other with ground simultaneously.
3. photovoltaic water pump controller according to claim 1 is characterized in that the zero passage comparison circuit mainly is by high speed, linear optical coupling, eliminator, and zero-crossing comparator is formed; Behind the three phase inverter bridge output terminal process linear optical coupling U16, connect capacitor C 56, deliver to zero-crossing comparator U17 behind the eliminator through R95, C57 composition again, the signal of Huo Deing is finally delivered to the external interrupt pin of control unit the most at last.
4. photovoltaic water pump controller according to claim 1 is characterized in that switch power mainly is made of DC converting chip UC3842 and peripheral circuit, self-control transformer T1, transformer front end input circlult, transformer front end feeder loop, transformer No. four output circuits, 5V voltage-stabiliser tube LM7805,3.3V voltage stabilizing sheet LM111733; The 1 pin compensation of UC3842 is introduced through R77, R79, C47 by transformer front end feeder loop; 2 pin voltage feed back are to obtain through R77, R82, adjustable resistance R85 dividing potential drop; 3 pin current samplings are to cause Q8 by transformer front end input two-terminal, again from source electrode to small resistor R90, again by obtaining after R87, the C52 filtering; Insert inner vibrator frequency and be connected to 4 pin by R86, C53; 6 pin output control signals to Q8, adjust the transformer input.
5. photovoltaic water pump controller according to claim 1, it is characterized in that six PWM pin output terminals of control unit connect the input end of buffer isolator, the output terminal of buffer isolator connects the input end of power driving circuit, the output terminal of power driving circuit connects the drain electrode of six metal-oxide-semiconductors in the three-phase inversion bridge circuit, and three phase inverter bridge is drawn three leads and connected brshless DC motor.
6. photovoltaic water pump controller according to claim 1 and 2, it is characterized in that drawing from the 3rd terminal of the Hall current sensor of DC/DC circuit input end, be connected to the input end of current detection circuit in the busbar voltage current detection circuit, the output terminal of current detection circuit is delivered to another A/D sampling pin of control unit, lead to the input end of voltage detecting circuit from the front-end sampling resistance of three phase inverter bridge, the output terminal of voltage detecting circuit is connected the 3rd A/D sampling pin of control unit.
7. photovoltaic water pump controller according to claim 1, it is characterized in that water level beaten that three leads of sensed water level are connected to the input end that water level is beaten dried testing circuit in the dried testing circuit, the output terminal of beating dried testing circuit from water level is connected to another external interrupt pin of control unit; Water level is beaten dried testing circuit and is made up of resistance R 117, R119, capacitor C 65, optocoupler U25, U24 amplifier LM358.
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| CN2010201274472U CN201730811U (en) | 2010-03-10 | 2010-03-10 | Photovoltaic water pump controller |
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| CN2010201274472U CN201730811U (en) | 2010-03-10 | 2010-03-10 | Photovoltaic water pump controller |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352833A (en) * | 2011-08-15 | 2012-02-15 | 浙江大学 | Bus-type intelligentized digitalizer for detecting performances of swimming pool water pump |
| CN102913426A (en) * | 2012-10-09 | 2013-02-06 | 江苏大学 | Full-automatic efficient photovoltaic water pump system and control method thereof |
| CN103807157A (en) * | 2013-12-30 | 2014-05-21 | 苏州市东仪自控设备有限公司 | Circuit structure of water pump control system |
| CN104047842A (en) * | 2013-03-15 | 2014-09-17 | 雷勃电气美国公司 | User-interface for pump system |
| CN104131968A (en) * | 2013-03-15 | 2014-11-05 | 雷勃电气美国公司 | System and method of controlling a pump system using integrated digital inputs |
| CN104381098A (en) * | 2014-12-06 | 2015-03-04 | 西北农林科技大学 | Water taking and pressurizing control system of solar sprinkler |
| CN106130434A (en) * | 2016-08-04 | 2016-11-16 | 国网江西省电力公司电力科学研究院 | A kind of utilize solar powered pump motor control system |
| CN107559181A (en) * | 2017-08-28 | 2018-01-09 | 宁波德业变频技术股份有限公司 | The solar energy water pump controller and control method of a kind of no energy storage device |
| CN107834913A (en) * | 2017-11-24 | 2018-03-23 | 安徽黄河水处理科技股份有限公司 | A kind of solar energy brushless controller |
| CN110651692A (en) * | 2019-09-03 | 2020-01-07 | 张家港市水务局 | Integrated valve controller in agricultural intelligent water-saving irrigation system |
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2010
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352833A (en) * | 2011-08-15 | 2012-02-15 | 浙江大学 | Bus-type intelligentized digitalizer for detecting performances of swimming pool water pump |
| CN102913426A (en) * | 2012-10-09 | 2013-02-06 | 江苏大学 | Full-automatic efficient photovoltaic water pump system and control method thereof |
| US9885351B2 (en) | 2013-03-15 | 2018-02-06 | Regal Beloit America, Inc. | System and method of controlling a pump system using integrated digital inputs |
| CN104047842A (en) * | 2013-03-15 | 2014-09-17 | 雷勃电气美国公司 | User-interface for pump system |
| CN104131968A (en) * | 2013-03-15 | 2014-11-05 | 雷勃电气美国公司 | System and method of controlling a pump system using integrated digital inputs |
| CN104131968B (en) * | 2013-03-15 | 2018-06-12 | 雷勃电气美国公司 | Use the system and method for integrated digital input terminal control pumping system |
| CN103807157A (en) * | 2013-12-30 | 2014-05-21 | 苏州市东仪自控设备有限公司 | Circuit structure of water pump control system |
| CN104381098A (en) * | 2014-12-06 | 2015-03-04 | 西北农林科技大学 | Water taking and pressurizing control system of solar sprinkler |
| CN106130434A (en) * | 2016-08-04 | 2016-11-16 | 国网江西省电力公司电力科学研究院 | A kind of utilize solar powered pump motor control system |
| CN106130434B (en) * | 2016-08-04 | 2018-11-27 | 国网江西省电力公司电力科学研究院 | It is a kind of to utilize solar powered pump motor control system |
| CN107559181A (en) * | 2017-08-28 | 2018-01-09 | 宁波德业变频技术股份有限公司 | The solar energy water pump controller and control method of a kind of no energy storage device |
| CN107834913A (en) * | 2017-11-24 | 2018-03-23 | 安徽黄河水处理科技股份有限公司 | A kind of solar energy brushless controller |
| CN107834913B (en) * | 2017-11-24 | 2024-01-12 | 安徽黄河水处理科技股份有限公司 | Solar brushless controller |
| CN110651692A (en) * | 2019-09-03 | 2020-01-07 | 张家港市水务局 | Integrated valve controller in agricultural intelligent water-saving irrigation system |
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