CN108901095A - A kind of multistage photovoltaic electromagnetic induction control heating means and its application - Google Patents
A kind of multistage photovoltaic electromagnetic induction control heating means and its application Download PDFInfo
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- CN108901095A CN108901095A CN201810558618.8A CN201810558618A CN108901095A CN 108901095 A CN108901095 A CN 108901095A CN 201810558618 A CN201810558618 A CN 201810558618A CN 108901095 A CN108901095 A CN 108901095A
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- 206010013786 Dry skin Diseases 0.000 abstract 1
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- 238000005485 electric heating Methods 0.000 description 10
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
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Abstract
The invention discloses a kind of multistage photovoltaic electromagnetic induction control heating means and its applications, this method is to improve conventional electrical equipment to be allowed to configure more electromagnetic induction heating coils in parallel simultaneously, and each heating coil distribution is bonded to the multiple sites of electrical equipment, and any heating coil is dynamically started by special MCU multistage electromagnetic induction heating coil switch controller control in real time, constitute the removable transformation in electrical appliance heating site, the controllable different thermal areas of heating temperature logic, its heating power supply is set to possess photovoltaic electric or alternating current by photovoltaic electric and alternating current switching control box simultaneously, and photo-voltaic power supply is preferentially used to track solar power generation dynamic power point to greatest extent within the limited illumination period.This method can be improved photo-electric control conversion effect and strengthen photovoltaic electrical appliance to the utilization rate of photoelectricity, can be widely applied to water heater, family takes dim, the fields such as modular heating and outdoor various heating, dryings.
Description
Technical field
The invention belongs to solar energy power generating efficient technique of rainwater utilization fields, more particularly to a kind of multistage photovoltaic electromagnetic sense
Controller heating means and its application are answered, is the high-frequency heating power dynamic control technology and photovoltaic electric of a kind of photo-voltaic power supply conversion
Device equipment improved technology.
Background technique
Solar energy power generating is inexhaustible green energy resource, is that the Nature grants human needs' wisdom
The precious deposits that could be obtained, the even more hot spot of countries in the world development of clean energy.It is well known that solar power generation is by solar power generation
System composition, including by solar battery group, solar controller, battery (group), if configuration inverter sends out solar energy
Electric system out-put supply becomes alternating current 220V or 110V, is to be widely used at present solar energy power generating.Wherein inverter
There are many type, plain edition inverter direct current 12V or 24V input, alternating current 220V, 50Hz output, power from 75W to 5000W,
Middle AC and DC conversion is UPS function and high-power point tracking device (Maximum Power Point Tracker, MPPT), is normal
Type, it is possible to provide the power supply of suitable alternating current 1000W power meets the use of conventional electric heater, also referred to as photovoltaic electric heating electricity
Device.Solar power generation is the process that luminous energy is converted to electric energy, however only effective intensity of illumination, keep effective illumination time and
Just have optimal photovoltaic electric power output when the multinomial function dynamic equilibrium of monocrystalline silicon storage battery plants temperature, inverter be exactly be to obtain in real time
The monitoring product for obtaining optimal dynamic balance photoelectric yield and developing.In fact the light of photovoltaic electric different time by weather and in one day
It is very unstable according to influence, as daytime it is bright and clear when, photovoltaic electric energy substitute completely traditional energy maintain electric appliance work normally, but
When sufficient or insufficient when also having light a daytime, especially fine situation is indefinite or to night, photovoltaic electric
It is almost nil, show photo-voltaic power supply and normal power supplies have the difference of essence, is that cannot continue and power supply that the time is unstable.It is positive because
In this way, the conventional electrical heating method of photo-voltaic power supply condition and the use of electrical equipment device are there are many technical deficiencies:1) existing
Have photovoltaic electric-heating device using with electric heater unit identical under the conditions of alternating current, be only one contact electric heating occur
Device, and not persistently factor heating such as container inner medium to be heated (the bucket water in such as canister) is all heated of photovoltaic power generation
Then take a long time, it was demonstrated that if without cityElectricityCooperating conventional photovoltaic electric heater unit under the conditions of this photovoltaic, there are the thermals efficiency
Low serious technical is insufficient.2) electric elements (electric heating coil) of existing electric heating equipment are solid in electric heater interior location
Fixed, heating site is immovable or changes, i.e., cannot selectively heat to the local space inside heating equipment, also just can not
Meet effective application of the cooperation high-power point tracking device photovoltaic electric of inverter, brings limitation for the product development of photovoltaic electric-heating technology
Property.3) photovoltaic electric is to be influenced by weather, environment, time various aspects and generate unstable power supply, by increasing coil change office
Portion heat site and temperature can Selection utilization photovoltaic electric, the utilization rate of solar power generation can be improved;And conventional alternating current is not present
Maximum power generation point, electrical equipment, which increases electric heating coil, only will increase cost.
It is improved with living standard, people's daily life is growing to various appliance applications demands, and electric appliance is easy-to-use, can
Automation control, cleaning ambient, safe operation.
Photovoltaic electric heater is synchronized with alternating current heater device at present, is only that heating energy source is come without any difference
Source is different.But photovoltaic electric is by weather and in one day that the time is influenced and very unstable, as daytime it is bright and clear when, photovoltaic electric energy
Substitution traditional energy completely maintains electric appliance to work normally, but bad weather or to night, and photovoltaic electric is almost nil, this is just
It is one of the reason of photovoltaic electric must be equipped with alternating current.
Exploitation is within the limited light intensity period to track solar power generation dynamic power point, photovoltaic high frequency conversion to greatest extent
The power control techniques and product of heating are that photovoltaic appliance field first develops direction, in the control field and inverse of energy power generation
Becoming all various aspects such as device power amplification has had alarming development, and new product continues to bring out, and solar energy highly effective using technology with
Relevant device exploitation has a long way to go with this.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of multistage photovoltaic electromagnetic induction control heating side
Electric equipment can be used to have heating site running transform for method and application, this method, and heating temperature logic is controllable, realize that part is quick
It is heated to drive the whole heating new function being all heated.
MCU multistage photovoltaic electromagnetic induction of the invention controls heating means, is to be allowed to configure simultaneously in conventional electrical equipment
More electromagnetic induction heating coils in parallel, and the distribution of each heating coil is bonded to the multiple sites of electrical equipment, and by special
The control of MCU multistage electromagnetic induction heating coil switch controller dynamically starts any heating coil in real time, constitutes electrical appliance
The removable transformation in site, the different thermal areas of heating temperature logic controllably are heated, while being controlled by photovoltaic electric and alternating current switching
Box processed makes its heating power supply possess photovoltaic electric or alternating current, and dynamic to track solar power generation to greatest extent within the limited illumination period
State power points preferentially uses photo-voltaic power supply.
The multistage electromagnetic induction heating coil switch controller include MCU processor, buck converter regulating circuit,
And switch relay corresponding with each electromagnetic induction heating coil and temperature sensor;The more heating coils form more
The shunt-resonant circuit that a common-battery holds, and connect with a switching tube, temperature sensor detects its corresponding heating coils heat region
The temperature of medium, and MCU processor is fed back to, the switching of MCU processor control switch relay;By MCU processor control with
The duty ratio of resonant tank tandem tap pipe is to control the voltage and current of heating coil.
Respectively independent heating works multistage electromagnetic induction coil in the present invention, the electromagnetic induction of photovoltaic electrification component and starting
Number of coils is unrelated;Electromagnetic induction heating coil thermal technology fixation arrangement can be vertical arrangement in photovoltaic electric heating equipment,
It can be horizontal distribution, any one electromagnetic induction heating started by electromagnetic induction coil switch controller MCU logical operation
Coil can change local heating site and regulation local heating temperature;Therefore design arrangement electromagnetic induction heating as needed
Coil is not limited by quantity.In addition, if being incorporated under multiple groups photovoltaic electrification component input condition, more electricity can be started simultaneously
Magnetic induction heating coil, that is, three coils start three sets of photovoltaic electrification components of needs simultaneously, are allowed to that Power operation can be increased
Control effect.
Method of the invention is directed within the limited light intensity period to track solar power generation dynamic power to greatest extent
Point is developed the power control techniques of photovoltaic high frequency conversion heating and is designed, while proposing improvement project to photovoltaic electric heating equipment,
It is the update of the promotion and photovoltaic electrical equipment to existing photovoltaic electrical heating power control technology.Especially in photovoltaic electric water heater side
The application in face, the increase of MCU multistage electromagnetic induction heating coil quantity not instead of in the simple meaning of existing similar product are new
The creative work of type photovoltaic electric heating control technology not only brews for a long time but also has put into sample on probation and succeeded.
Detailed description of the invention
Fig. 1 is the thinking schematic diagram of the method for the present invention;
Fig. 2 is the schematic diagram that the method for the present invention is applied to water heater;
Fig. 3 is a kind of specific photovoltaic electric efficient application electric operation control circuit figure of the method for the present invention.
Specific embodiment
The method of the present invention is implemented as follows:
1. photovoltaic power generation:It is made of photovoltaic module, photovoltaic electricity generation controller, high-frequency inverter and ancillary apparatus element, mesh
This preceding technology is closely mature and standardizes, and the photovoltaic panel of usual 1~2.0 square metre of area can get photovoltaic electric energy power 1kw,
And to track the calculating of solar power generation dynamic power point to greatest extent, it can get 4~5 degree of electricity within theory average one day.
2. photovoltaic electric and alternating current switching control box:It is to be by what photovoltaic DC PV+/- input and electric main L/N inputted
System, wherein alternating current be exchange is become by rectifier bridge bridge by direct current, then by relay S1 to photovoltaic and mains-supplied into
Row switching control;Resistance R1 and relay S2 constitute SS (soft start) control circuit, and system electrification is avoided to impact;
3.MCU multistage electromagnetic induction heating coil switch controller (this sentence for three electromagnetic induction heating coils into
Row illustrates, and specific control circuit is as shown in Figure 3):
Multistage electromagnetic induction heating coil switch controller hardware is constituted:Mainly by MCU central data processor, three are had
To the relay S1 of double-contact, high-power numerical control nomotron Q1 and Q2, three electromagnetic induction heating coils L3, L4, L5 and
The components such as matched temperature sensor composition;
Multistage electromagnetic induction coil switch controller control loop software design:Q2/C9/S3/L3,Q2/C9/S4/L4,
Q2/C9/S5/L5 is respectively the shunt-resonant circuit that three common-batteries hold, and wherein switch relay is three double-contact (A1/B1;
A2/B2 and A3/B3), relay three-way switch S3, S4, S5 (contact is that A and B is linked into high-frequency converter output end) are for simultaneously
Connection three electromagnetic induction heating coils of connection, are L3, L4, L5 respectively, and three electromagnetic induction coils are independently of one another and power phase
Together, for only starting a loop works by relay switching every time, realize that heating site is convertible, regional temperature is adjustable
The heating purpose of control;
Working principle and step:Upon power-up of the system, switch controller of the present invention obtains stable power-supplying, first passes through resistance R1
It is pre-charged, driving is carried out by MCU after the voltage stabilization on capacitor C7 and is switched on S2, complete soft start control, C7
Voltage, that is, bus DC voltage stability after, electronic switching tube Q1 and Q2 gate drive signals are in turning off standby state this moment,
Central data processor (MCU) to be obtained combines external temperature sensor to provide instruction and be switched to after specified coil and successively opens again
The gate leve of Q1 and Q2 is heated to coil power supply;C7/Q1/L1/D1/C8 constitute buck converter regulating circuit first export it is stable
10Vdc voltage is then turned on Q2, realizes the starting resonant operational of rear class shunt-resonant circuit, such as Q2/C9/S3/L3, buck converter
Maximum power point tracking is carried out according to illumination, that is, photovoltaic module output power again, and adjusts the duty ratio of Q1 in real time to change
The output voltage of parallel operation is carried out and is adjusted in real time;Central data processor (MCU) adjusts the duty of Q2 by operation in real time simultaneously
Than controlling the voltage and current at two end of coil, realize that photovoltaic electric energy is converted to the real-time synchronization of electromagnetic energy, photovoltaic function
The strong coil power of rate is strong, and the weak coil power of photovoltaic power is with regard to weak;Output during computer heating control, according to photovoltaic module acquisition
Power and water temperature condition are provided the instruction of corresponding contacts "on" and "off" on control relay by central data processor (MCU),
Successively the heating of switching heating coil completion office's cloth drives whole heating.
In initial start system, according to the instruction of central data processor (MCU), S3Relay is only first driven to be closed S3,
Successively start buck controller and resonant tank, preferentially power to coil L3, and by temperature sensor Ltemp1 to where L3
Heated body on temperature carry out precise measurement, to herein be heated temperature reach requirement, just close Q1 and Q2 gate leve driving
S3, i.e., the resonant tank work where stopping buck controller and L3 are disconnected after signal;Further according to central data processor (MCU)
Instruction, then be only closed S4 by S4Relay, successively start buck controller and resonant tank, power to coil L4, and lead to
Excess temperature sensor Ltemp2 carries out precise measurement to the temperature on heated body where L4, reaches to the heated temperature where L4
It is required that just stopping heating;It is successively switched to L5 again, the heated body where L5 is heated, the temperature sensing of position to be heated
Device Ltemp3 then stops heating to setting value;If the heated body temperature where L3, which drops to, to be set when heating L4 or L5
Value is set, then stops working immediately and switches back into L3 coil according to starting timing and heated, i.e., preferentially L3 is heated always,
Temperature of heated body meets setting value where being always ensured that L3 with this.
The photovoltaic electrical appliance application example of multistage photovoltaic electromagnetic induction control heating means of the invention is as follows:
Example 1:A kind of efficient photovoltaic electromagnetic induction water heater
A kind of efficient photovoltaic electromagnetic induction water heater, by photovoltaic module, photovoltaic generating system, " multistage electricity of the invention
Magnetic induction heating coil switch controller " hardware system, electromagnetic heating system and solenoid valve etc. form (see Fig. 2, Fig. 3);Hardware
Structure such as Fig. 2, in figure, 1 is water heater liner, and 2 be insulating layer shell, and 3 be each electromagnetic induction heating coil, and 4,5,6 be each control
System switch, 7 be solenoid valve block, and 8 be main valve.The wherein output terminals A in electromagnetic induction coil controller and switching control circuit, B two
Point provides alternating voltage 220V, electric current 10A, is connected to (the contact relay S3, S4, S5 of electromagnetic induction coil switch controller
It is A and B) for controlling three electromagnetic induction heating coils, is in standby before receiving instruction;Three electromagnetic induction heatings
The equidistant water heater outer wall for being wrapped in vertical hanging of coil makes water heater form a, tri- individual of b, c centered on coil heats
The identical thermal areas (Fig. 2) of product, it is M1, M2, M3 that, which there is temperature sensor functionality solenoid valve block in each region, (M4 is cleaning valve)
Finally it is compiled in main valve M;Start first to start work L3, relay S3 closure, container top region is heated, when water temperature reaches setting
It is required that when, central data processor (MCU) provides new instruction, switching starting L4 after being connected to the data of solenoid valve temperature sensor
Coil;S3 is closed, and S4 is opened;Equally whole container local heating is set to be heated to whole so on up to starting L5;If top region
Domain water temperature drop to setting value -5% (this value can be set by the man-machine interface of water heater) when, data processor can be at any time
It issues instruction and switches back to L3 again, but ensure that top area has sufficient work water temperature first;It illustrates:Such as water heater is
It 80 liters, horizontally suspends single-stage electromagnetic induction heating coil and is wrapped in the bottom for being equivalent to vertical hanging water heater in the middle part of water heater,
The water temperature of only whole container, which reaches 80 degree and could provide work water but need to consume 4 hours, is equivalent to the time;Such as
Fruit shortening heating time must employ alternating current;And the equidistant water heater for being wrapped in vertical hanging of multistage electromagnetic induction heating coil
Water heater is divided into identical three thermal areas (Fig. 2) of volume by outside;Start top layer electromagnetic induction heating coil first, makes
The area container a is heated to 80 degree and only needs 1 hour;If temperature, which does not change, continues the switching starting area c electromagnetic induction heating coil,
Quite heating site level face, which moves down, is heated the area container c;If weather changes suddenly after just two hours, photovoltaic electric
Power drops to zero, but because is that multistage switching is heated, and heat levels face site can move up and down, so multi-pole coils light
It is 40 liters that volt electric heater provides work water within the efficient intensity period, and the offer work of conventional single stage coil heats is with water
Zero.The such cyclic switching heating of multi-pole coils, is to realize that photovoltaic energy is maximized the technological innovation utilized.
Example 2:A kind of efficient photovoltaic man land used is dim
A kind of dim photovoltaic electrification component used of efficient photovoltaic man land used is a tractor serves several purposes with embodiment 1;Wherein electromagnetism sense
The output terminals A of coil controllers and switching control circuit, B two o'clock is answered to provide alternating voltage 220V, electric current 10A is connected to electromagnetism
Relay S3, S4, S5 (contact is A and B) of induction coil switch controller are used to control three electromagnetic induction heating coils,
(Fig. 3) is in standby before receiving instruction;Electromagnetic induction heating module, electromagnetism is respectively prepared in three electromagnetic induction heating coils
Induction heating module is made of heat-storing material with heat accumulation function, is respectively placed in master bedroom L3, secondary room L4 and hall L5, can be random
Start any one heating module therein, the temperature of accumulation of heat module temperature sensor reach setting is set 50% can start under
One heating module, subsequently enters loop start, within the limited light intensity period by electromagnetic induction switch starting make it is each
Block accumulation of heat module temperature all reaches 100% that setting is set, and interior is made to reach heating purpose.
Example 3:A kind of efficient photovoltaic tea drier
It finishes in time after tea picking of crucial importance for the quality of tealeaves, it is well known that Tea Polyphenols in Tea is to human body
Beneficial nutriment, but the tealeaves for leaving tree body itself after picking can discharge a kind of material damage tea of polyphenol oxidase
The structure of polyphenol and make tealeaves nutrition reduction, usual method be picking after tealeaves perhaps in time processing or be put into freezer suppression
The activity of polyphenol oxidase processed.Using photovoltaic tea drier can field at the first time carry out tea green-keeping, i.e., by tealeaves by
Hot temperature is in 46~55 degree of accumulative purposes for keeping no less than just can reach inhibition polyphenol oxidase activity for 20 minutes, field water-removing
Technological break-through will be brought for processing high-quality tealeaves.Specific method:Photovoltaic electrification component and electromagnetic induction coil controller used
With switching control circuit with embodiment 1;Three electromagnetic induction heating coils are prepared into the porous of temperature sensor at this time
Electromagnetic induction heating partition is equidistantly placed inside drying equipment respectively equipment being divided into the equal three different thermal technologies in space
Region (referring to Fig. 2), (also settable more electromagnetic induction coils as needed increase laminate and expand drying equipment work sky
Between improve working efficiency), have gas vent above drying equipment, bottom has wind to incite, and has equipment and excludes moisture and temperature cycles
Function.Tealeaves is placed on the porous electromagnetic induction heating partition with temperature sensor when drying operation, can arbitrarily be opened
Dynamic wherein one layer of heated barrier makes drying equipment is heated to drive in uniform by cyclic switching leveled heating under the wind effect of inciting, by
Temperature sensor and data processor controlled temperature and MCU data processing memory drying time period simultaneously issue instruction map heating level
So that local heating is driven whole drying, is possibly realized to take back factory in the water-removing tealeaves that field obtains high quality.Another party
Face, the artificial sieve plate adjustment layer of taking out of the alternative conventional drying of multistage electromagnetic induction heating coil heat labor intensity, therefore multistage
Electromagnetic induction heating line coil is not that simple quantity increases but to photovoltaic energy tracking best power point effective use luminous energy
Creative labor is paid.
Claims (5)
1. a kind of multistage photovoltaic electromagnetic induction controls heating means, which is characterized in that be to improve conventional electrical equipment to be allowed to simultaneously
More electromagnetic induction heating coils in parallel are configured, each heating coil distribution is bonded to the multiple sites of electrical equipment, and by special
The control of MCU multistage electromagnetic induction heating coil switch controller dynamically start any heating coil in real time, constitute electricity consumption
Device heats the removable transformation in site, the different thermal areas of heating temperature logic controllably, while being switched by photovoltaic electric and alternating current
Control box makes its heating power supply possess photovoltaic electric or alternating current, and to track solar power generation to greatest extent within the limited illumination period
Dynamic power point preferentially uses photo-voltaic power supply.
2. multistage photovoltaic electromagnetic induction according to claim 1 controls heating means, which is characterized in that described is special
MCU multistage electromagnetic induction heating coil switch controller include MCU processor, buck converter regulating circuit and with each electromagnetism
The corresponding switch relay of load coil and temperature sensor;The more heating coils form what multiple common-batteries held
Shunt-resonant circuit, and connect with a switching tube, temperature sensor detects the temperature of its corresponding heating coil thermal areas medium,
And MCU processor is fed back to, the switching of MCU processor control switch relay;It is controlled by MCU processor and is connected with resonant tank
The duty ratio of switching tube is to control the voltage and current of heating coil.
3. a kind of high-efficiency photovoltaic electromagnetic induction water heater, which is characterized in that use realization method according to claim 1 or 2
Heating.
4. a kind of high-efficiency photovoltaic heats floor heating, which is characterized in that realize heating using mode as claimed in claim 1 or 2.
5. a kind of high-efficiency photovoltaic tea drier, which is characterized in that realize heating using mode as claimed in claim 1 or 2.
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CN110337997A (en) * | 2019-06-20 | 2019-10-18 | 浙江大学 | Photovoltaic electric heating regulates and controls bamboo plantation soil moisture method |
CN110492440A (en) * | 2019-07-24 | 2019-11-22 | 上海空间电源研究所 | A kind of soft start protection circuit for high-power topology control |
CN110513746A (en) * | 2019-06-20 | 2019-11-29 | 浙江大学 | A kind of high-efficiency water heater power amplifier |
FR3111474A1 (en) * | 2020-06-12 | 2021-12-17 | Andre Borie | Electricity smart router set and high frequency inductive heating for photovoltaic panel. |
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