CN104381098A - Water taking and pressurizing control system of solar sprinkler - Google Patents
Water taking and pressurizing control system of solar sprinkler Download PDFInfo
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- CN104381098A CN104381098A CN201410731925.3A CN201410731925A CN104381098A CN 104381098 A CN104381098 A CN 104381098A CN 201410731925 A CN201410731925 A CN 201410731925A CN 104381098 A CN104381098 A CN 104381098A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
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Abstract
The invention discloses a water taking and pressurizing control system of a solar sprinkler. The system comprises a solar photovoltaic power generating module, a direct-current brushless motor control circuit and a water source constant water level automatic water replenishing control circuit. The solar photovoltaic power generating module respectively powers the direct-current brushless motor control circuit and the water source constant water level automatic water replenishing control circuit. The direct-current brushless motor control circuit controls the power supply of a water pump. The control system has the advantages that the system uses clean solar energy to supply power, wireless control is used, convenient operation is achieved, remote on and off control of units is achieved, remote transmission indication and alarming of a system fault state unit can be achieved, a high-performance brushless direct-current motor is used to drive a self-priming pump, high system reliability and low energy loss are achieved, the water pump is started in a convenient and labor saving manner, automatic irrigation can be achieved conveniently, universality and flexibility of sprinkling irrigation units are increased effectively, and the irrigation requirements of farms, pastures, crops, economical crops and forage grass are satisfied.
Description
Technical field
The present invention relates to the water intaking of a kind of irrigation sprinkler pressurizing control system, particularly a kind of solar energy irrigation sprinkler brush DC pump compression system control circuit.
Background technology
Restriction irrigated area expands further and has two key factors, and one is the restriction of water resource; Two is that irrigated area lacks supply of electric power.But there is abundant solar energy resources in these areas, utilize these abundant solar energy natural resourcess, the irrigation technique of photovoltaic technology with modern times advanced person is combined, limited water resources is utilized to develop photovoltaic irrigation technique, promoting increases in grain production and ecological improvement, is an important path of China's economy, society, Ecological Sustainable Development.Sprinkling irrigation, as one of water-saving irrigation measure, plays an important role in agricultural irrigation.Row spray formula sprinkling irrigation unit common at present mainly comprises translation type sprinkler and center-pivot sprinkler.Traditional employing hydroturbine is driven, driven by power and diesel-driven row spray formula irrigation sprinkler, because operating cost is compared with high and energy consumption large, be unfavorable for the enforcement of agriculture energy-saving consumption-reducing.
Summary of the invention
In order to use traveling sprinkler in the area lacking supply of electric power, and realize the target of control automatically, promote applicability and the flexibility of sprinkling irrigation unit, design a set of brush DC pump compression system control circuit that can meet canal formula of feeding and spray unit service requirement, unit is made not to be only applicable to large, medium and small type farm, pasture, crops, the irrigation requirement of economic crops, herbage, also can be combined the maintenance, fertilising etc. that are used for crop with fertilizer apparatus.
The present invention proposes the scheme solving existing issue as follows:
A kind of solar energy irrigation sprinkler water intaking pressurizing control system, comprise solar photovoltaic generation system, brush DC water pump pressurized control circuit and water source permanent water level automatic water supplement control circuit, rear both are made up of major loop and control loop respectively, and described solar photovoltaic generation system is made up of photovoltaic module, controller for solar, accumulator and switch; Described brush DC water pump pressurized control main circuit loop is made up of breaker, DC relay normally-closed contact, electrothermal relay, DC brushless motor controller and self priming pump, the direct-flow input end of Brush-Less DC motor control is connected with main dc bus, ac output end is connected with self priming pump three-phase input end, control loop is by breaker, press button, and change-over switch, auxiliary relay, indicator lamp and wireless control switch form; Described water source permanent water level automatic water supplement control circuit major loop is made up of breaker, DC relay contact and magnetic valve, control loop is made up of voltage reduction module, press button, change-over switch, auxiliary relay, water level controller, indicator lamp and wireless control switch etc., and voltage reduction module two ends are connected with water lev el control ring current end with main dc bus respectively.
Described solar photovoltaic generation system is made up of solar photovoltaic assembly, batteries, solar charging/discharging manager.
Described solar photovoltaic generation system adopts the MPPT based on sunshine mechanically tracking to control and controls based on the hard-wired MPPT of photovoltaic battery panel.
The major loop of described brush DC water pump pressurized control circuit comprises brushless direct current motor controller, electrothermal relay FR, circuit breaker Q F
1, relay K M
1auxiliary normally-closed contact and motor composition, brushless direct current motor controller is connected to electrothermal relay and relay K M
1between auxiliary normally-closed contact, circuit breaker Q F
1be connected to major loop foremost; Control loop comprises circuit breaker Q F
2, change-over switch 1QC, main relay KM1, main relay KM
1often open self-holding contact, relay K M
2, relay K M
2auxiliary contact, tight guard's valve SB
1, shift knob SB
2~ SB
3, wireless control switch WL
1~ WL
2, electrothermal relay FR contact switch and indicator lamp HL
1~ HL
2composition, change-over switch 1QC is connected to manually/wireless start stop switch and tight guard's valve SB
1between, main relay KM1 coil is connected to manually/between wireless start stop switch and electrothermal relay FR contact, and tight guard's valve SB
1left side is connected to circuit breaker Q F
2, right side is connected with change-over switch 1QC, indicator lamp HL
1~ HL
2be connected to main dc bus negative pole end and circuit breaker Q F respectively
2cathode output end, wherein indicator lamp HL
2seal in main relay KM
1auxiliary normally opened contact.
The major loop water pump of described brush DC water pump pressurized control circuit adopts 50ZX type self priming pump.
Described Brush-Less DC motor control circuit, main control chip adopts TMS320F2812 type digital signal processor, controls main circuit and is made up of main control chip, hall position sensor, Hall current sensor, photoelectric encoder, photo-coupler, inverter, motor; Adopt tertiary structure, the first order is intelligent solar photovoltaic generating system, adopts off-grid type absolute construction; The second level is IPM intelligent power drive circuit, adopts high-performance IGBT switch module; 3rd pole water pump compression system.
Described Brush-Less DC motor control main circuit comprises the parts such as charging, brake control circuit, SVPWM modulation DC voltage and current testing circuit, PWM Vector Modulation drive circuit, signal protection testing circuit, current detection circuit, position detecting circuit, velocity checking circuits, current potential speed governing and rotating speed display and forms merit.
Described water source permanent water level automatic water supplement control circuit major loop is by circuit breaker Q F
3, relay K M
3auxiliary normally-closed contact, relay K M
4auxiliary normally opened contact and DC electromagnetic valve YV composition, DC electromagnetic valve YV is respectively through relay K M
3~ KM
4auxiliary normally closed normally opened contact connects and is connected with main dc bus both positive and negative polarity; Control loop is by circuit breaker Q F4, Buck voltage reduction module HG10-48S12, change-over switch 2QC, tightly stop button SB4, shift knob SB
2~ SB
3, wireless control switch WL
1~ WL
2, water level inductive control circuit and indicator lamp HL
1~ HL
2composition; Water level inductive control circuit is by resistance R1 ~ R3, triode V1 ~ V2, diode V3, relay K M
3the compositions such as main coil and water level contact A 0 ~ A2, triode V1 is connected between resistance R1 ~ 2, is connected, right side is connected with change-over switch 2QC on the left of Buck voltage reduction module HG10-48S12 with circuit breaker Q F4.
Buck voltage reduction module HG10-48S12 is adopted to be 12V security control voltage by system 48V voltage transformation.
The MPPT of described sunshine mechanically tracking controls to comprise solar-energy photo-voltaic cell, light sensor, data processing and controller, dc motor and drive circuit and level and pitching mechanical transmission mechanism five part.Position error signal and the light intensity signal in horizontal and vertical direction between the sun and photovoltaic battery panel is gathered by light sensor, and feed back to data processing and controller, through data processing and amplification, the move angle of next step photovoltaic battery panel is judged according to solar irradiation rule, and send corresponding control command to motor-drive circuit, trigger relevant relay switch more subsequently, make electromotor driving mechanical transmission mechanism, with speed slowly photovoltaic battery panel towards angular movement to desired position accurately on go, thus realize the object of following the tracks of solar irradiation.
The hard-wired MPPT of described photovoltaic battery panel controls to adopt a kind of correction variable step conductance increment method algorithm, and wherein the iteration step length of the dutycycle of converter is capable of automatic changing.
Described brush DC water pump pressurized control circuit, its major loop water pump adopts 50ZX type self priming pump, water pump no longer adopts conventional threephase asynchronous to drive, but adopts the direct-connected driving of a DC brushless motor, and water pump operation adopts rotational speed regulation to regulate associating voltage regulating mode with valve closing.
Adopt technique scheme, technological merit of the present invention is:
1. pressurize from fetching water on a whole set of control circuit; the Non-follow control of water intaking and setting-out can not only be realized; and improving on unit relay protection measure, design is considered to adopt wireless control technology, and control circuit is easy to operate; what not only realize unit long-rangely to open, stops control overflow; and feasible system malfunction unit remote transmission instruction with report to the police, handling safety is reliable, and automatic controlling level is high, simple to operate; be easy to realize unattended operation, reduce human input.
2. the working method of formula sprinkling irrigation unit is fed according to canal, water pump must be made to be placed on unit truss, ensureing that unit moves and continue water suction requirement, considering common water pump type, for improving unit working condition, preferentially select the self priming centrifugal pump with stronger suction capacity, water pump start stop operation, without the need to each water-filling entry condition forming centrifugal pump by instruments such as manual vacuum machines, conveniently saves trouble, automatic irrigation can be realized easily, save labour.
3. select brshless DC motor to drive water pump, it controls upper employing SVPWM Space Vector Control Strategy, relative to threephase asynchronous, have for brushless motor, system architecture is simple, reliable operation, lightweight and the steady dynamic response of system speed governing is very fast.
4. system adopts based on the MPPT control of employing sunshine mechanically tracking and based on the hard-wired MPPT control technology of photovoltaic battery panel, the conductance revising step-length is adopted to increase algorithm policy and the solar tracking technology received at solar control algorithm, photovoltaic module is not only kept to always work in maximum power point place, and two dimension tracking can be carried out to sunray, keep solar photovoltaic assembly lighting surface vertical with sunray all the time, improve solar panels conversion efficiency, effectively solve the problem that photovoltaic efficiency is low.
5. water pump adopts direct-connected brshless DC motor to drive, and adopt solar energy as power resources, system architecture is simple, reliability is strong, energy loss is little, characteristics of energy saving is obvious, more traditional hydroturbine drive train is energy-conservation reaches as high as 25%, effectively improve conventional rack high energy consumption situation, realize the target of agriculture energy-saving consumption-reducing, and effectively promote general applicability and the flexibility of sprinkling irrigation unit, electric wire is buried without the need to civil power supply and cloth, promoting the use of of field and unregulated power arrival area can be adapted to, sprinkling irrigation unit is made not only to be applicable to greatly, in, small scale-farm, pasture, crops, economic crops, the irrigation requirement of herbage, also the maintenance being used for crop can be combined with fertilizer apparatus, fertilising etc.
Solar energy irrigation system has buries the plurality of advantages such as cable, saving labour, service life of equipment length, economize energy, environmental protection, investment payback time be short without the need to civil power supply and cloth.Because automatic control technology and photovoltaic industry are mature on the whole, Driven by Solar Energy photovoltaic water pump is applied to movable sprinkler irrigation unit and develops corresponding control system, to promoting that the development of traveling sprinkler is significant.
Accompanying drawing explanation
Fig. 1 is individual solar photovoltaic generating system schematic diagram.
Fig. 2 is irrigation sprinkler brush DC water pump pressurized control circuit.
Fig. 3 is water source permanent water level automatic water supplement control circuit.
Fig. 4 is the main topological circuit of PMSM Electric Machine Control.
Fig. 5 is the pump motor control general principle figure based on DSP2812.
Figure 6 shows that mechanically tracking Control system architecture figure.
Fig. 7 is the flow chart revising variable step conductance increment method.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, solar energy irrigation sprinkler water intaking pressurizing control system of the present invention, comprise solar photovoltaic generation system, brush DC water pump pressurized control circuit and water source permanent water level automatic water supplement control circuit, rear both are made up of major loop and control loop respectively, and described solar photovoltaic generation system is made up of photovoltaic module, controller for solar, accumulator and switch; Described brush DC water pump pressurized control main circuit loop is made up of breaker, DC relay normally-closed contact, electrothermal relay, DC brushless motor controller and self priming pump, the direct-flow input end of Brush-Less DC motor control is connected with main dc bus, ac output end is connected with self priming pump three-phase input end, control loop is by breaker, press button, and change-over switch, auxiliary relay, indicator lamp and wireless control switch form; Described water source permanent water level automatic water supplement control circuit major loop is made up of breaker, DC relay contact and magnetic valve, control loop is made up of voltage reduction module, press button, change-over switch, auxiliary relay, water level controller, indicator lamp and wireless control switch etc., and voltage reduction module two ends are connected with water lev el control ring current end with main dc bus respectively.
Described solar photovoltaic generation system is made up of solar photovoltaic assembly, batteries, solar charging/discharging manager.
Described solar photovoltaic generation system adopts the MPPT based on sunshine mechanically tracking to control and controls based on the hard-wired MPPT of photovoltaic battery panel.
Fig. 2 gives irrigation sprinkler brush DC water pump pressurized control circuit of the present invention, and the major loop of brush DC water pump pressurized control circuit comprises brushless direct current motor controller, electrothermal relay FR, circuit breaker Q F
1, relay K M
1auxiliary normally-closed contact and motor composition, brushless direct current motor controller is connected to electrothermal relay and relay K M
1between auxiliary normally-closed contact, circuit breaker Q F
1be connected to major loop foremost; Control loop comprises circuit breaker Q F
2, change-over switch 1QC, main relay KM1, main relay KM
1often open self-holding contact, relay K M
2, relay K M
2auxiliary contact, tight guard's valve SB
1, shift knob SB
2~ SB
3, wireless control switch WL
1~ WL
2, electrothermal relay FR contact switch and indicator lamp HL
1~ HL
2composition, change-over switch 1QC is connected to manually/wireless start stop switch and tight guard's valve SB
1between, main relay KM1 coil is connected to manually/between wireless start stop switch and electrothermal relay FR contact, and tight guard's valve SB
1left side is connected to circuit breaker Q F
2, right side is connected with change-over switch 1QC, indicator lamp HL
1~ HL
2be connected to main dc bus negative pole end and circuit breaker Q F respectively
2cathode output end, wherein indicator lamp HL
2seal in main relay KM
1auxiliary normally opened contact.
The major loop water pump of described brush DC water pump pressurized control circuit adopts 50ZX type self priming pump.
Fig. 5 is the pump motor control general principle figure based on DSP2812, Brush-Less DC motor control circuit, main control chip adopts TMS320F2812 type digital signal processor, controls main circuit and is made up of main control chip, hall position sensor, Hall current sensor, photoelectric encoder, photo-coupler, inverter, motor; Adopt tertiary structure, the first order is intelligent solar photovoltaic generating system, adopts off-grid type absolute construction; The second level is IPM intelligent power drive circuit, adopts high-performance IGBT switch module; 3rd pole water pump compression system.
Fig. 4 is the main topological circuit of PMSM Electric Machine Control, and Brush-Less DC motor control main circuit comprises the parts such as charging, brake control circuit, SVPWM modulation DC voltage and current testing circuit, PWM Vector Modulation drive circuit, signal protection testing circuit, current detection circuit, position detecting circuit, velocity checking circuits, current potential speed governing and rotating speed display and forms merit.
Fig. 3 is water source permanent water level automatic water supplement control circuit, and major loop is by circuit breaker Q F
3, relay K M
3auxiliary normally-closed contact, relay K M
4auxiliary normally opened contact and DC electromagnetic valve YV composition, DC electromagnetic valve YV is respectively through relay K M
3~ KM
4auxiliary normally closed normally opened contact connects and is connected with main dc bus both positive and negative polarity; Control loop is by circuit breaker Q F4, Buck voltage reduction module HG10-48S12, change-over switch 2QC, tightly stop button SB4, shift knob SB
2~ SB
3, wireless control switch WL
1~ WL
2, water level inductive control circuit and indicator lamp HL
1~ HL
2composition; Water level inductive control circuit is by resistance R1 ~ R3, triode V1 ~ V2, diode V3, relay K M
3the compositions such as main coil and water level contact A 0 ~ A2, triode V1 is connected between resistance R1 ~ 2, is connected, right side is connected with change-over switch 2QC on the left of Buck voltage reduction module HG10-48S12 with circuit breaker Q F4.
Buck voltage reduction module HG10-48S12 is adopted to be 12V security control voltage by system 48V voltage transformation.
The MPPT of described sunshine mechanically tracking controls to comprise solar-energy photo-voltaic cell, light sensor, data processing and controller, dc motor and drive circuit and level and pitching mechanical transmission mechanism five part.Position error signal and the light intensity signal in horizontal and vertical direction between the sun and photovoltaic battery panel is gathered by light sensor, and feed back to data processing and controller, through data processing and amplification, the move angle of next step photovoltaic battery panel is judged according to solar irradiation rule, and send corresponding control command to motor-drive circuit, trigger relevant relay switch more subsequently, make electromotor driving mechanical transmission mechanism, with speed slowly photovoltaic battery panel towards angular movement to desired position accurately on go, thus realize the object of following the tracks of solar irradiation.
The hard-wired MPPT of described photovoltaic battery panel controls to adopt a kind of correction variable step conductance increment method algorithm, and wherein the iteration step length of the dutycycle of converter is capable of automatic changing.
As shown in Figure 1, embodiments provide a kind of solar energy irrigation sprinkler brush DC pump compression system control circuit, utilize photovoltaic effect, solar radiant energy is directly changed into electric energy, by solar charging/discharging manager, control and management is carried out to the direct current produced, prevent from accumulator super-charge and cross putting, and power to the load at any time.When solar illuminating is sufficient or illumination is inadequate but storage battery power supply is normal, K switch 1 is closed and K2 disconnects, the direct current provided is changed through DC brushless motor controller, export three-phase alternating-current supply for brush DC self priming pump, the control of its rotating speed makes dutycycle convert by the adjustment of potentiometer, reach the object of rotational speed regulation, its real-time rotate speed carries out Dynamic Announce by revolution counter.When the not enough and storage battery power supply fault of solar illuminating or not enough time, K switch 1 disconnects and K2 closes, and powered by emergency power supply, emergency power supply can comprise diesel-driven generator, civil power etc. temporarily.
During system works, first should ensure that " empty pond " does not occur for cistern or water suction ditch, " spilling water " phenomenon and water level keep constant, be illustrated in figure 3 a simple permanent water-level control circuit, for preventing electric shock accidents, control circuit adopts HG10-48S12 module system voltage to be contracted to 12V as its working power.Before the work of sprinkling irrigation unit, major loop circuit breaker Q of closing.F
3, control loop circuit breaker Q F
4, power supply indicator HL3 is bright, illustrates that Power supply is normal.When automatic change-over 2QC is switched to wireless control mode, because of D.C. contactor KM
5coil obtains electric adhesive, coil KM
5auxiliary normally opened contact closes, and auxiliary normally-closed contact disconnects, and interlocks two kinds of operator schemes.Now press wireless control switch WL
4, D.C. contactor KM
4coil obtains electric adhesive and KM
4auxiliary normally opened contact closes self-locking, and also connect the magnetic valve YV be installed on cistern water inlet while connecting water lev el control loop, cistern starts retaining.When water level rise to Al probe above time, because of relay K M
3auxiliary normal opened contact KM
3be in off-state, and water level between A0 A1 point time KM
3still be in power-off loss of excitation state, cistern remains retaining.
When water level rises to A0 point, A0, A2 pop one's head in through water electrical conductive communication, V1 and V2 pipe saturation conduction, relay K M
3coil obtains electric excitation, KM
3coil KM
3auxiliary normally-closed contact disconnects, KM
3auxiliary normally opened contact closes, and electromagnetic valve coil dead electricity valve body is closed, and retaining stops.Time between cistern water level decreasing to A0 and Al probe, now relay K M
3normal opened contact is closed, Al, A2 probe through water conductor connect, triode V1 because of base bias current effect, relay K M
3still be in attracting state.Only have when water level decreasing is to below Al, Al A2 two ends disconnect, and triode V1, V2 pipe are ended, KM
3coil losing electricity discharges, KM
3auxiliary normally opened contact disconnects, auxiliary normally-closed contact closes, and magnetic valve reopens retaining.By the repetitive control of above-mentioned automatic water supplement circuit, water level is maintained within undulated control scope all the time, meet irrigation sprinkler pressure pump water suction requirement.
When system is for stopping, presses and stopping crawl wireless switching WL
3, contactor KM
4coil blackout discharges, KM
4auxiliary normally opened contact recovers often to open, and cut off major loop and control power supply, closed electromagnetic valve quits work.When automatic change-over 1QC is switched to manual mode, KM
5normally-open normally-close contact interlocks, now SB
6, SB
5press button replaces wireless point driving switch WL respectively
4and WL
3perform start stop operation.If when needing emergency stop system to work, then can press and tightly stop button SB
4realize.
As shown in Figure 2, after the retaining of water suction canal is normal, can open water pump, before starting mode of pump, close major loop circuit breaker Q F
1, control loop circuit breaker Q F
2, power supply indicator HL1 is bright, illustrates that Power supply is normal.When automatic change-over 1QC is switched to wireless control mode, because of D.C. contactor KM
2coil obtains electric adhesive, coil KM
2auxiliary normally opened contact closes, and auxiliary normally-closed contact disconnects, and interlocks two kinds of operator schemes.Now press wireless control switch WL
2, D.C. contactor KM
1coil obtains electric adhesive and KM
1auxiliary normally opened contact closes self-locking, connects water pump.When water pump stops, pressing and stop crawl wireless switching WL
1, contactor KM
1coil blackout discharges, KM
1auxiliary normally opened contact recovers often to open, and cut off major loop and control power supply, Pump Failure quits work.When automatic change-over 2QC is switched to manual mode, KM
2normally-open normally-close contact interlocks, now SB
3, SB
2press button replaces wireless point driving switch WL respectively
2and WL
1perform start stop operation.If when needing emergency stop system to work, then can press and tightly stop button SB
4realize.If water pump is in work process, there is FR tripping operation in electrothermal relay, cutting-off controlling loop, contactor KM
1coil blackout discharges, KM
1auxiliary normally opened contact recovers often to open, and cuts off pump power equally, to reach certain protective effect.
Being illustrated in figure 4 sine-wave permanent magnet synchronous motor drives water pump to control main circuit topological structure three grades of circuit: the first order is intelligent solar photovoltaic generating system, adopt off-grid type absolute construction, there is the MPPT feature based on buck circuit (Buck Chopper); The second level is IPM intelligent power drive circuit, adopts high-performance IGBT module; 3rd pole brushless DC pump drive system.Along with the fast development of digital signal processor, the first order realizes the discharge and recharge of whole system and the Automatic Control of intelligent solar tracking process, second, three grades adopt based on DSP is the Real-time Digital Control System of core, by potentiometer, rotating speed is set, after starter motor, utilize rotating speed and alternating current-direct current signal deteching circuit Real-time Collection power drive pipe and brushless electric machine working signal, 6 road actuating switch signals are sent by PWM drive circuit through kernel control chip analyzing and processing, realize the Frequency conversion control to brshless DC motor, and by display circuit, current rotating speed is shown in real time, conveniently water pump output characteristics is set.For sophisticated systems security mechanism, be provided with certain guard signal and detect.
It should be noted that water pump before activation, controller for solar is charged to electric capacity C1 and C2 by charging resistor R7, to prevent charging current excessive.When the voltage on C1 and C2 reaches rated voltage, relay J adhesive, by R7 short circuit, prevents R7 from consuming electric energy.Voltage hall sensor and three (two also can) current Hall sensor is used for detecting DC bus-bar voltage and three-phase current respectively, controls basic input signal as controller.Power switch K4 is for energy of releasing during motor braking, and when motor braking, mechanical energy is converted to electric energy to dc bus feedback, makes the capacitance voltage lifting on dc bus.In order to prevent, DC bus-bar voltage is too high causes device fault, needs control K4 conducting, portion of energy is released by R6 braking resistor.
Be illustrated in figure 6 mechanically tracking Control system architecture figure, position error signal and the light intensity signal in horizontal and vertical direction between the sun and photovoltaic battery panel is gathered by light sensor, and feed back to data processing and controller, through data processing and amplification, the move angle of next step photovoltaic battery panel is judged according to solar irradiation rule, and send corresponding control command to motor-drive circuit, trigger relevant relay switch more subsequently, make electromotor driving mechanical transmission mechanism, with speed slowly photovoltaic battery panel towards angular movement to desired position accurately on go, thus realize the object of following the tracks of solar irradiation.
Be illustrated in figure 7 the flow chart revising variable step conductance increment method, by constantly detecting current photovoltaic array operating voltage and operating current
u(k),
ik (), calculates current power
pthe variable quantity of (k) and voltage x current power three, and then determine correction step-length, and by diagram flow process respectively to d
u, d
i/ d
uwith
-I/U, and d
isize cases income judge, in time voltage x current amount at lower a moment is revised according to judged result, and correction value step is along with abs (d
p/ d
u) size variation and change, its current power is more less close to revising step-length during peak power, thus ensures that photovoltaic cell always works in maximum power point or maximum power point place, improves photovoltaic cell conversion efficiency.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in right of the present invention.
Claims (9)
1. a solar energy irrigation sprinkler water intaking pressurizing control system, it is characterized in that: comprise solar photovoltaic generation system, brush DC water pump pressurized control circuit and water source permanent water level automatic water supplement control circuit, rear both are made up of major loop and control loop respectively, and described solar photovoltaic generation system is made up of photovoltaic module, controller for solar, accumulator and switch; Described brush DC water pump pressurized control main circuit loop is made up of breaker, DC relay normally-closed contact, electrothermal relay, DC brushless motor controller and self priming pump, the direct-flow input end of Brush-Less DC motor control is connected with main dc bus, ac output end is connected with self priming pump three-phase input end, control loop is by breaker, press button, and change-over switch, auxiliary relay, indicator lamp and wireless control switch form; Described water source permanent water level automatic water supplement control circuit major loop is made up of breaker, DC relay contact and magnetic valve, control loop is made up of voltage reduction module, press button, change-over switch, auxiliary relay, water level controller, indicator lamp and wireless control switch etc., and voltage reduction module two ends are connected with water lev el control ring current end with main dc bus respectively.
2. solar energy irrigation sprinkler water intaking pressurizing control system according to claim 1, is characterized in that: described solar photovoltaic generation system is made up of solar photovoltaic assembly, batteries, solar charging/discharging manager.
3. solar energy irrigation sprinkler water intaking pressurizing control system according to claim 2, is characterized in that: described solar photovoltaic generation system adopts the MPPT based on sunshine mechanically tracking to control and controls based on the hard-wired MPPT of photovoltaic battery panel.
4. solar energy irrigation sprinkler water intaking pressurizing control system according to claim 1, is characterized in that: the major loop of described brush DC water pump pressurized control circuit comprises brushless direct current motor controller, electrothermal relay FR, circuit breaker Q F
1, relay K M
1auxiliary normally-closed contact and motor composition, brushless direct current motor controller is connected to electrothermal relay and relay K M
1between auxiliary normally-closed contact, circuit breaker Q F
1be connected to major loop foremost; Control loop comprises circuit breaker Q F
2, change-over switch 1QC, main relay KM1, main relay KM
1often open self-holding contact, relay K M
2, relay K M
2auxiliary contact, tight guard's valve SB
1, shift knob SB
2~ SB
3, wireless control switch WL
1~ WL
2, electrothermal relay FR contact switch and indicator lamp HL
1~ HL
2composition, change-over switch 1QC is connected to manually/wireless start stop switch and tight guard's valve SB
1between, main relay KM1 coil is connected to manually/between wireless start stop switch and electrothermal relay FR contact, and tight guard's valve SB
1left side is connected to circuit breaker Q F
2, right side is connected with change-over switch 1QC, indicator lamp HL
1~ HL
2be connected to main dc bus negative pole end and circuit breaker Q F respectively
2cathode output end, wherein indicator lamp HL
2seal in main relay KM
1auxiliary normally opened contact.
5. solar energy irrigation sprinkler water intaking pressurizing control system according to claim 1, is characterized in that: the major loop water pump of described brush DC water pump pressurized control circuit adopts 50ZX type self priming pump.
6. the solar energy irrigation sprinkler water intaking pressurizing control system according to claim 1 or 4, it is characterized in that: described Brush-Less DC motor control circuit, main control chip adopts TMS320F2812 type digital signal processor, controls main circuit and is made up of main control chip, hall position sensor, Hall current sensor, photoelectric encoder, photo-coupler, inverter, motor; Adopt tertiary structure, the first order is intelligent solar photovoltaic generating system, adopts off-grid type absolute construction; The second level is IPM intelligent power drive circuit, adopts high-performance IGBT switch module; 3rd pole water pump compression system.
7. the solar energy irrigation sprinkler water intaking pressurizing control system according to claim 1 or 4, is characterized in that: described Brush-Less DC motor control main circuit comprises the parts such as charging, brake control circuit, SVPWM modulation DC voltage and current testing circuit, PWM Vector Modulation drive circuit, signal protection testing circuit, current detection circuit, position detecting circuit, velocity checking circuits, current potential speed governing and rotating speed display and forms merit.
8. solar energy irrigation sprinkler water intaking pressurizing control system according to claim 1, is characterized in that: described water source permanent water level automatic water supplement control circuit major loop is by circuit breaker Q F
3, relay K M
3auxiliary normally-closed contact, relay K M
4auxiliary normally opened contact and DC electromagnetic valve YV composition, DC electromagnetic valve YV is respectively through relay K M
3~ KM
4auxiliary normally closed normally opened contact connects and is connected with main dc bus both positive and negative polarity; Control loop is by circuit breaker Q F4, Buck voltage reduction module HG10-48S12, change-over switch 2QC, tightly stop button SB4, shift knob SB
2~ SB
3, wireless control switch WL
1~ WL
2, water level inductive control circuit and indicator lamp HL
1~ HL
2composition; Water level inductive control circuit is by resistance R1 ~ R3, triode V1 ~ V2, diode V3, relay K M
3the compositions such as main coil and water level contact A 0 ~ A2, triode V1 is connected between resistance R1 ~ 2, is connected, right side is connected with change-over switch 2QC on the left of Buck voltage reduction module HG10-48S12 with circuit breaker Q F4.
9. the permanent water level automatic water supplement in water source according to claim 8 control circuit, is characterized in that: adopt Buck voltage reduction module HG10-48S12 to be 12V security control voltage by system 48V voltage transformation.
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|---|---|---|---|
| CN201410731925.3A CN104381098A (en) | 2014-12-06 | 2014-12-06 | Water taking and pressurizing control system of solar sprinkler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410731925.3A CN104381098A (en) | 2014-12-06 | 2014-12-06 | Water taking and pressurizing control system of solar sprinkler |
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| CN104381098A true CN104381098A (en) | 2015-03-04 |
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ID=52599150
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410731925.3A Pending CN104381098A (en) | 2014-12-06 | 2014-12-06 | Water taking and pressurizing control system of solar sprinkler |
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