CN203926044U - The full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine - Google Patents

The full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine Download PDF

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CN203926044U
CN203926044U CN201420339925.4U CN201420339925U CN203926044U CN 203926044 U CN203926044 U CN 203926044U CN 201420339925 U CN201420339925 U CN 201420339925U CN 203926044 U CN203926044 U CN 203926044U
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sun
electric machine
water source
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阮树成
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Abstract

The utility model relates to electronic technology field, specifically the full-automatic irrigation pump of a kind of sun-generated electric power remote measuring and controlling three phase electric machine.Comprise soil humidity sensor, wireless launcher, water source detecting sensor, water source optocoupler control switch, wireless receiver, three phase electric machine water pump, sun-generated electric power remote measuring and controlling soil moisture water pump, solving ac power supply inconvenience lays, especially the far away or insufficient water sources in dried up source, the uneven farmland of physical features Automatic Control are irrigated, make different crops in optimum growh state, greatly improve the agricultural planting level of production.Soil humidity sensor, the sinusoidal wave sensing of water source detecting sensor electrode are effectively protected electrolytic etching and are extended use.Wireless receipts/the send out high frequency stabilization remote measuring and controlling of crystal oscillator, impulse coding, decoding capacity are large, strong interference immunity, and the stable and reliable operation of adjacent farmland, does not interfere with each other.The utility model is widely used in field irrigation and ensures that soil moisture meets plant growth requirement.

Description

The full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine
Technical field
The utility model relates to electronic technology field, specifically the full-automatic irrigation pump of a kind of sun-generated electric power remote measuring and controlling three phase electric machine.
background technique
The soil of growing plant need to keep certain humidity, and both inaccurate by manual control soil moisture, the amount of labour is large again, is not suitable for modern agricultural production requirement.Especially the rare arid poor ridge area insufficient water sources of rainwater or dried up source are far away, or physical features is uneven, and the inconvenience of ac power supply electrical network is laid, and affects agricultural production.
summary of the invention
The purpose of this utility model is to provide the farmland that AC network inconvenience is laid, measure the wet dry information wireless transmitting of soil, electromagnetic wave space is transferred to the wireless receiver at water source and sets the full-automatic irrigation pump of a kind of sun-generated electric power remote measuring and controlling three phase electric machine of irrigating humidity, water supply coverage.
The utility model technical solution: comprise two groups of sun-generated electric powers, three-phase inverter, soil humidity sensor, soil humidity measuring electric bridge, low frequency crystal oscillator, Buffer Amplifier, active band-pass filter, differential amplifier, accurate cymoscope, power amplifier, modulator, wireless launcher, water source testing signal generator, water source detecting sensor, water source optocoupler control switch, wireless receiver, monostable time delay relay, A.C. contactor, three phase electric machine water pump, wherein, low frequency crystal oscillator sine wave output signal is through Buffer Amplifier, active band-pass filter filtering higher harmonics connects soil humidity measuring electric bridge input end, and soil humidity measuring bridge measurement brachium pontis connects soil humidity sensor, and soil humidity measuring electric bridge is exported through differential amplifier, accurate cymoscope, power amplifier driven modulator to wireless launcher primary modulation is carried soil humidity measuring information, wireless launcher impulse coding secondary modulation single channel encryption is by antenna transmission, electromagnetic wave is transferred to wireless receiver through space, the deciphering of wireless receiver pulse decoding channel, demodulation soil humidity measuring information is controlled water pump and is irrigated, and wireless receiver is by the sinusoidal wave access of water source testing signal generator output low frequency water source detecting sensor, water source optocoupler control switch provides transducing signal, and water source testing signal generator is vibrated by RC Wien bridge circuit, diode VD 7, VD 8fixed ampllitude, triode VT 4emitter following output is through condenser coupling water receiving source detecting sensor exploring electrode, diode VD 5, VD 6detection, capacitor filtering, current-limiting resistance are to triode VT 2electric current amplifies driving water source optocoupler control switch light emitting diode, and phototriode and RADIO FREQUENCY receiver decoding output drive relay triode VT 3be connected in series, through monostable time delay relay J 1contact connects A.C. contactor K coil and controls power supply, ac contactor contact K -1, K -2, K -3connect three phase electric machine water pump and three-phase inverter three-phase power output end, three phase electric machine water pump connects overload protection thermorelay, one group of sun-generated electric power connects three-phase inverter power input, and through voltage stabilizer water receiving source testing signal generator, water source optocoupler control switch, wireless receiver power end, another group sun-generated electric power connects soil surveying wireless launcher, and packing engineering plastic magazine into soil surveying wireless launcher, soil humidity sensor, note is filled with epoxy sealing,
Soil humidity sensor is at least by two cylinders or oblate graphite or stainless steel electrode, its lower end is sharp cone distal and inserts soil, upper end is drawn by wire bonds, between electrode, be provided with spacing and be injection molded into one by engineering plastics, at the bottom of being bonded in wireless launcher engineering plastic magazine, electrode is drawn wire and is connected soil humidity measuring bridge measurement brachium pontis;
Water source detecting sensor is established spaced two graphite or stainless steel exploring electrode by cross section in one section of plastic water pipe, shielded cable connects pin and draws, the place of drawing is provided with moisture proof oversheath pipe, electrode is drawn shielded cable and is connected water source testing signal generator, water source optocoupler control switch, and water source detecting sensor plastic water pipe connects water source intake pipe and water pump;
Wireless launcher is comprised of radio frequency crystals oscillator, radio-frequency power amplifier, pulse encoder, modulator, antenna, the output of radio frequency crystals oscillator connects radio-frequency power amplifier, radio-frequency power amplifier and modulator feed are connected in series, the coded pulse of modulator input termination pulse encoder, modulator power end drives by carrying soil humidity measuring power of information amplifier, through antenna transmission;
Wireless receiver by aerial signal access radio frequency highly put, mixing, the machine crystal oscillator signal access Adder, extracts intermediate-freuqncy signal through amplification, demodulation, low putting to pulse decoder after mixing, pulse decoder output is through driving monostable time delay relay J 1triode and water source optocoupler control switch phototriode are connected in series, through relay contact J 1-1connect A.C. contactor K coil and control power supply, ac contactor contact K -1, K -2, K -3connect three phase electric machine water pump and three-phase inverter power output end, three phase electric machine water pump connects overload protection thermorelay, and demodulation soil humidity measuring information is controlled three phase electric machine water pump and opened or stop irrigating;
Two groups of sun-generated electric powers are respectively by photovoltaic battery panel E 1output is through blocking diode VD 10, relay J 2contact J 2-1meet storage battery E 2, storage battery E 2cross pressure-controlled sampling and meet potentiometer RP 4, adjustable termination window voltage comparable chip ICa positive input terminal, under-voltage control sampling meets potentiometer RP 3, adjustable termination window voltage comparable chip IC bnegative input end, window voltage comparable chip ICa negative input end and window voltage comparable chip IC bpositive input terminal is through resistance R 47, R 48divide crimping voltage-stabiliser tube VD 14voltage reference reference, window voltage is relatively exported through triode and is connect relay J 2, storage battery E 2be connected in series quick fuse F, and be connected to anti-reverse diode VD 11, one group of sun-generated electric power connects three-phase inverter input power, and through voltage stabilizing water receiving source testing signal generator, water source optocoupler control switch, wireless receiver power end, another group sun-generated electric power connects soil surveying wireless launcher;
Three-phase inverter is by insulated gate power triode VT 5, VT 6, VT 7, VT 8, VT 9, VT 10form the inversion of PWM pulsewidth modulation, six pipe grids connect respectively PWM controller signals voltage, and collector and emitter fly-wheel diode in parallel suppresses transformer and produces backward voltage, VT 5emitter series connection VT 8collector electrode meets transformer T primary inductance TL 1, VT 6emitter series connection VT 9collector electrode meets primary inductance TL 2, VT 7emitter series connection VT 10collector electrode meets transformer T primary inductance TL 3, sun-generated electric power positive pole meets VT 5, VT 6, VT 7collector electrode, sun-generated electric power negative pole meets VT 8, VT 9, VT 10emitter, transformer secondary output inductance TL 1 ', TL 2 ', TL 3 'as three-phase inverter output terminals A, B, C, relay contact J 1-1through A.C. contactor K control coil, connect center line N, phase line, three phase electric machine water pump is through ac contactor contact K -1, K -2, K -3, fuse F 1, F 2, F 3connect three-phase inverter output terminal, three phase electric machine water pump meets overload protection thermorelay FR, and mutual inductor PL penetrates phase line and picks up load current signal feedback and connect PWM controller pulsewidth modulation.
The utility model produces good effect: solar energy radio remote measuring and controlling agricultural land soil humidity is automatically irrigated, solving AC network inconvenience lays, especially dried up source is far away, insufficient water sources and the uneven field irrigation of physical features, set soil conservation humidity range, make the different crops can be in optimum growh state, the time saving and energy saving agricultural planting level of production that greatly improves.Soil humidity sensor, water source detecting sensor electrode are all set as the effective protective measures of AC sine wave sensing, avoid because of the polarization corrosion that produces electrolysis of direct current sensing electrode, ensure that wireless telemetering remote control water pump uses reliably and with long-term, wireless receipts/send out the high frequency stabilization remote measuring and controlling of crystal oscillator, impulse coding decoding capacity is large, strong interference immunity, adjacent farmland is stable, reliable, does not interfere with each other.
accompanying drawing explanation
Fig. 1 technical solutions of the utility model theory diagram
Fig. 2 soil humidity sensor schematic diagram
Fig. 3 soil humidity measuring wireless transmitter circuits
Fig. 4 water source detects sensing wireless receiver circuits
Fig. 5 three-phase inverter and three phase electric machine water pump control circuit
Fig. 6 solar-electricity source control circuit
embodiment
With reference to Fig. 1, 2, 3, 4, 5, 6, the utility model embodiment and embodiment, comprise two groups of sun-generated electric powers 18, three-phase inverter 17, soil humidity sensor 6, soil humidity measuring electric bridge 5, low frequency crystal oscillator 1, Buffer Amplifier 2, active band-pass filter 3, differential amplifier 4, accurate cymoscope 7, power amplifier 8, modulator 9, wireless launcher 10, water source testing signal generator 15, water source detecting sensor 16, water source optocoupler control switch 12, wireless receiver 11, monostable time delay relay 13, A.C. contactor 14, three phase electric machine water pump 19, wherein, low frequency crystal oscillator 1 sine wave output signal is through Buffer Amplifier 2, active band-pass filter 3 filtering higher harmonicss connect soil humidity measuring electric bridge 5 input ends, and soil humidity measuring electric bridge 5 is measured brachium pontis and connected soil humidity sensor 6, and 5 outputs of soil humidity measuring electric bridge are through differential amplifier 4, accurate cymoscope 7, power amplifier 8 driven modulators 9 to wireless launcher 10 primary modulation are carried soil humidity measuring information, wireless launcher 10 impulse coding secondary modulation single channel encryptions are by antenna transmission, electromagnetic wave is transferred to wireless receiver 11 through space, wireless receiver 11 pulse decoding channel deciphering, demodulation soil humidity measuring information is controlled water pump and is irrigated, and wireless receiver 11 is by the sinusoidal wave access of water source testing signal generator 15 output low frequencies water source detecting sensor 16, water source optocoupler control switch 12 provides transducing signal, and water source testing signal generator 15 is vibrated by RC Wien bridge circuit, diode VD 7, VD 8fixed ampllitude, triode VT 4emitter following output is through condenser coupling water receiving source detecting sensor 16 exploring electrodes, diode VD 5, VD 6detection, capacitor filtering, current-limiting resistance are to triode VT 2electric current amplifies driving water source optocoupler control switch 12 light emitting diodes, and phototriode and wireless receiver 11 decodings outputs drive relay triode VT 3be connected in series, through monostable time delay relay 13 contact J 1-1connect A.C. contactor K14 coil and control power supply, ac contactor contact K -1, K -2, K -3connect three phase electric machine water pump 19 and three-phase inverter 17 three-phase power output ends, three phase electric machine water pump 19 connects overload protection thermorelay, and one group of sun-generated electric power 18 output+V is through switch S 1connect three-phase inverter 17 power inputs, and through voltage stabilizing water receiving source testing signal generator 15, water source optocoupler control switch 12, wireless receiver 11 power ends, output+V is through switch S for another group sun-generated electric power 1connect soil surveying wireless launcher 10, and pack engineering plastic magazine into soil surveying wireless launcher 10, soil humidity sensor 6, note is filled with epoxy sealing.
Two groups of solar-electricity source control circuits are identical, and soil detects, wireless launcher is used small-power solar cell and storage battery, and wireless receiver, three-phase inverter and three-phase water pump are by big-power solar battery and storage battery power supply.Solar cell E 1daylight turn on pump is simultaneously also to storage battery E 2charging, night is by storage battery E 2power supply turn on pump, round the clock drought control irrigation.Window voltage comparable chip IC a, Ic boutput level is through triode VT 11drive relay J 2control under-voltage, the overvoltage of charging, protection storage battery E 2normal operation.Under-voltage control is at storage battery E 2voltage is during lower than window voltage comparable chip ICa reference voltage, relay J 2adhesive, contact J 2-1connect storage battery E 2charging, as storage battery E 2voltage is sufficient, crosses pressure-controlled voltage higher than window voltage comparable chip IC breference voltage, relay J 2releasing contact J 2-1, cut off solar cell E 1to storage battery E 2charging.Turn on pump Energy Intensity Reduction storage battery E 2voltage, sun-generated electric power is recovered charging.
Relay J in parallel 2two ends diode VD 15suppress backward voltage.Voltage-stabiliser tube VD 14and resistance R 46, capacitor C 16voltage stabilizing guarantee is under-voltage, overvoltage is accurately controlled.Window voltage comparable chip IC selects LM358 double operational.
Low frequency crystal JT oscillator IC 1aproduce stable low-frequency sine, through Buffer Amplifier IC 1bimpedence matching, active band-pass filter IC 1.filtering higher harmonics provides measuring bridge high-quality signal source, and the specific resistance that acts on soil humidity sensor RS sensing soil moisture goes to change electric bridge characteristic, reaches testing goal.
Regulator potentiometer RP 1if soil moisture to be filled with, makes bridge balance, differential amplifier IC 1dbe output as zero, cymoscope IC 2b, IC 2c, power discharging IC 2dnon-output signal, wireless launcher is not launched remote control command, so wireless receiver does not have decoded signal output, triode VT 3cut-off, monostable time delay relay contact J 1-1normally closed connection ac contactor contact K -1, K -2, K -3connect three phase electric machine M and open pump operation pumping irrigation; Soil moisture reaches setting value, reduces soil resistivity measuring bridge disequilibrium, differential amplifier IC 1doutput signal is through cymoscope IC 2b, IC 2c, power discharging IC 2d, triode VT 1drive wireless launcher primary modulation to carry soil humidity measuring information, radio frequency transmitter impulse coding secondary modulation single channel encryption is by antenna A 1transmitting, electromagnetic wave is transferred to antenna A through space 2, wireless receiver, wireless receiver pulse decoding channel deciphering, demodulation soil humidity measuring information is controlled monostable time delay relay contact J 1-1discharge ac contactor contact K -1, K -2, K -3disconnect three phase electric machine M water pump and stop irrigating, complete water supply.Monostable time delay prevents that the frequent start-stop of soil critical humidity water pump from beating for 5～10 seconds.Potentiometer RP 2regulate the sensitivity of soil moisture content remote measuring and controlling.
RADIO FREQUENCY receiver water source detecting sensor detects intake pipe JSG water source soil moisture content, has abundant water resources by IC 1lM741 produces low-frequency ac sine wave and makes electrodes conduct, through capacitance C 6, C 11, diode VD 5, VD 6detection, capacitor C 7filtering, triode VT 2electric current amplifies driving optocoupler ELD, wireless receiver decoding output signal drives by IC 2the 555 monostable time delay relay J that form 1, A.C. contactor K controls three phase electric machine M pumping for water pump and irrigates; As intake pipe, JSG cuts off the water supply, water source detecting sensor electrode open circuit, optocoupler ELD, triode VT 2cut-off monostable time delay relay releasing contact J 1-1disconnect A.C. contactor K, contact K -1, K -2, K -3disconnect three phase electric machine M power supply, guarantee that three phase electric machine M has a power failure, water pump stops pumping, and prevents that water pump idle running is impaired, and running prevents that three phase electric machine M overload is connected to thermorelay FR protection.
Soil humidity sensor, water source detecting sensor electrode are all set as sinusoidal wave sensing protective measures, effectively avoid because of the polarization corrosion that produces electrolysis of direct current sensing electrode, ensure that wireless telemetering remote control water pump uses reliably and with long-term.Soil humidity measuring device IC 1a～d, IC 2a～dadopt two four high guaily unit LM234, wherein IC 2apositive input terminal resistance R 18, R 19dividing potential drop, output 1/2 supply voltage is as IC 1a～d, IC 2c～breference potential, is operated in the range of linearity it separately, so that single supply powered battery.Differential amplifier IC 1dpositive and negative input end amplitude limit parallel diode VD 1, VD 2prevent that signal overloading from affecting measuring accuracy.Wireless receiver power supply by sun-generated electric power through Three-end voltage stabilizer IC 37815 and capacitor C 12, C 13filtering power supply.
Wireless receipts/send out the high frequency stabilization remote measuring and controlling of crystal oscillator, impulse coding decoding capacity is large, strong interference immunity, and adjacent area farmland is stable, reliable, does not interfere with each other.Wireless telemetering remote-control distance arranges carrier frequency, emissive power and antenna radiation characteristics and receiving sensitivity by farmland under irrigation and water source distance, carrier frequency is used ISM frequency 2.45GHz, emissive power 15mdb, receiving sensitivity-100mdb, 1/4 wavelength antennas can control tens of rice to hundreds of meters apart from field irrigation.Sun-generated electric power three-phase inverter output power 140kw, mesh power 120kw three phase electric machine water pump, pumping load 100000L/nin, irrigates 500 hectares of farmlands.More team control irrigation is received/sent out to large size field irrigation wireless telemetering capable of being combined, promotes practical effect.
The utility model sun-generated electric power wireless telemetering remote control agricultural land soil humidity is automatically irrigated, solving AC network inconvenience lays, especially dried up source is far away, the uneven field irrigation of insufficient water sources and physical features, moisture reaches sufficient or enough moistens and stops supplying water, lack of water again turn on pump supplies water, the sufficient shutdown of moisture, with this Auto Power On that circulates, shutdown, need not manual operation, avoid lack of water or oversupplied water, the economize on electricity of fully-automatic intelligent high-efficiency water-saving, agricultural land soil humidity is remained in predetermined range, crop can be in optimum growh state, the time saving and energy saving agricultural planting level of production that greatly improves.

Claims (7)

1. the full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine, is characterized in that: comprise two groups of sun-generated electric powers, three-phase inverter, soil humidity sensor, soil humidity measuring electric bridge, low frequency crystal oscillator, Buffer Amplifier, active band-pass filter, differential amplifier, accurate cymoscope, power amplifier, modulator, wireless launcher, water source testing signal generator, water source detecting sensor, water source optocoupler control switch, wireless receiver, monostable time delay relay, A.C. contactor, three phase electric machine water pump, wherein, low frequency crystal oscillator sine wave output signal is through Buffer Amplifier, active band-pass filter filtering higher harmonics connects soil humidity measuring electric bridge input end, and soil humidity measuring bridge measurement brachium pontis connects soil humidity sensor, and soil humidity measuring electric bridge is exported through differential amplifier, accurate cymoscope, power amplifier driven modulator to wireless launcher primary modulation is carried soil humidity measuring information, wireless launcher impulse coding secondary modulation single channel encryption is by antenna transmission, electromagnetic wave is transferred to wireless receiver through space, the deciphering of wireless receiver pulse decoding channel, demodulation soil humidity measuring information is controlled water pump and is irrigated, and wireless receiver is by the sinusoidal wave access of water source testing signal generator output low frequency water source detecting sensor, water source optocoupler control switch provides transducing signal, and water source testing signal generator is vibrated by RC Wien bridge circuit, diode VD 7, VD 8fixed ampllitude, triode VT 4emitter following output is through condenser coupling water receiving source detecting sensor exploring electrode, diode VD 5, VD 6detection, capacitor filtering, current-limiting resistance are to triode VT 2electric current amplifies driving water source optocoupler control switch light emitting diode, and phototriode and RADIO FREQUENCY receiver decoding output drive relay triode VT 3be connected in series, through monostable time delay relay J 1contact connects A.C. contactor K coil and controls power supply, ac contactor contact K -1, K -2, K -3connect three phase electric machine water pump and three-phase inverter power output end, three phase electric machine water pump connects overload protection thermorelay, one group of sun-generated electric power connects three-phase inverter power input, and through voltage stabilizer water receiving source testing signal generator, water source optocoupler control switch, wireless receiver power end, another group sun-generated electric power connects soil surveying wireless launcher, and packing engineering plastic magazine into soil surveying wireless launcher, soil humidity sensor, note is filled with epoxy sealing.
2. the full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine according to claim 1, it is characterized in that: soil humidity sensor is at least by two cylindrical bodys or oblate stainless steel electrode, its lower end is sharp cone distal and inserts soil, upper end is drawn by wire bonds, between electrode, be provided with spacing and be injection molded into one by engineering plastics, at the bottom of being bonded in wireless launcher engineering plastic magazine, electrode is drawn wire and is connected soil humidity measuring bridge measurement brachium pontis.
3. the full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine according to claim 1, it is characterized in that: water source detecting sensor is established spaced two stainless steel exploring electrodes by cross section in one section of plastic water pipe, shielded cable connects pin and draws, the place of drawing is provided with moisture proof oversheath pipe, electrode is drawn shielded cable and is connected water source testing signal generator, water source optocoupler control switch, and water source detecting sensor plastic water pipe connects water source intake pipe and water pump.
4. the full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine according to claim 1, it is characterized in that: wireless launcher is comprised of radio frequency crystals oscillator, radio-frequency power amplifier, pulse encoder, modulator, antenna, the output of radio frequency crystals oscillator connects radio-frequency power amplifier, radio-frequency power amplifier and modulator feed are connected in series, the coded pulse of modulator input termination pulse encoder, modulator power end drives by carrying soil humidity measuring power of information amplifier, through antenna transmission.
5. the full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine according to claim 1, it is characterized in that: wireless receiver by aerial signal access radio frequency highly put, mixing, the machine crystal oscillator signal access Adder, after mixing, extract intermediate-freuqncy signal through amplification, demodulation, low putting to pulse decoder, pulse decoder output is through driving monostable time delay relay triode and water source optocoupler control switch phototriode to be connected in series, through relay J 1contact connects A.C. contactor K coil and controls power supply, ac contactor contact K -1, K -2, K -3connect three phase electric machine water pump and three-phase inverter power output end, three phase electric machine water pump connects overload protection thermorelay, and demodulation soil humidity measuring information is controlled three phase electric machine water pump and opened or stop irrigating.
6. the full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine according to claim 1, is characterized in that: two groups of sun-generated electric powers are respectively by photovoltaic battery panel E 1output is through blocking diode VD 10, relay J 2contact J 2-1meet storage battery E 2, storage battery E 2cross pressure-controlled sampling and meet potentiometer RP 4, adjustable termination window voltage comparable chip ICa positive input terminal, under-voltage control sampling meets potentiometer RP 3, adjustable termination window voltage comparable chip IC bnegative input end, window voltage comparable chip ICa negative input end and window voltage comparable chip IC bpositive input terminal is through resistance R 47, R 48divide crimping voltage-stabiliser tube VD 14voltage is made reference, and window voltage is relatively exported through triode and connect relay J 2, storage battery E 2be connected in series quick fuse F, and be connected to anti-reverse diode VD 11, one group of sun-generated electric power connects three-phase inverter power end, and through voltage stabilizing water receiving source testing signal generator, water source optocoupler control switch, wireless receiver power end, another group sun-generated electric power access soil surveying wireless launcher.
7. the full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine according to claim 1, is characterized in that: three-phase inverter is by insulated gate power triode VT 5, VT 6, VT 7, VT 8, VT 9, VT 10form the inversion of PWM pulsewidth modulation, six pipe grids connect respectively PWM controller signals voltage, and collector and emitter fly-wheel diode in parallel suppresses transformer and produces backward voltage, VT 5emitter series connection VT 8collector electrode meets transformer T primary inductance TL 1, VT 6emitter series connection VT 9collector electrode meets primary inductance TL 2, VT 7emitter series connection VT 10collector electrode meets transformer T primary inductance TL 3, sun-generated electric power positive pole meets VT 5, VT 6, VT 7collector electrode, sun-generated electric power negative pole meets VT 8, VT 9, VT 10emitter, transformer secondary output inductance TL 1 ', TL 2 ', TL 3 'as three-phase inverter output terminals A, B, C, relay contact J 1-1through A.C. contactor K control coil, connect center line N, phase line, three phase electric machine water pump is through ac contactor contact K -1, K -2, K -3, fuse F 1, F 2, F 3connect three-phase inverter output terminal, three phase electric machine water pump meets overload protection thermorelay FR, and mutual inductor PL penetrates phase line and picks up load current signal feedback and connect PWM controller pulsewidth modulation.
CN201420339925.4U 2014-06-13 2014-06-13 The full-automatic irrigation pump of sun-generated electric power remote measuring and controlling three phase electric machine Withdrawn - After Issue CN203926044U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104653473A (en) * 2014-06-13 2015-05-27 阮树成 Solar power supply remote measure and control three-phase motor full automatic irrigation water pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104653473A (en) * 2014-06-13 2015-05-27 阮树成 Solar power supply remote measure and control three-phase motor full automatic irrigation water pump

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