CN102593962A - Device for transmitting kilowatt wireless power at moderate distance - Google Patents
Device for transmitting kilowatt wireless power at moderate distance Download PDFInfo
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- CN102593962A CN102593962A CN2012100644423A CN201210064442A CN102593962A CN 102593962 A CN102593962 A CN 102593962A CN 2012100644423 A CN2012100644423 A CN 2012100644423A CN 201210064442 A CN201210064442 A CN 201210064442A CN 102593962 A CN102593962 A CN 102593962A
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Abstract
The invention provides a device for transmitting kilowatt wireless power at a moderate distance and belongs to the wireless power transmission field. The device for transmitting the kilowatt wireless power at the moderate distance comprises a kilowatt sinusoidal wave power transmitter, a kilowatt power receiver and a frequency controller. The device for transmitting the kilowatt wireless power at the moderate distance is capable of achieving kilowatt sinusoidal wave generation, kilowatt wireless power transmission and kilowatt wireless power receiving and providing wireless electricity power energy for multiple equipment, or is applicable to wireless charging or wireless power supply, and is particularly applied in special situations where power is not suitable to be supplied by wires.
Description
Technical field
The present invention relates to the wireless power transmission field; It is a kind of high-power wireless power transfer of moderate distance; Be specifically related to the resonant wireless electric energy transmission device of a kind of multikilowatt; It can be applicable to the perhaps occasion of special requirement radio energy of radio car charging, can realize the wireless transmission of multikilowatt power electric energy in the moderate distance scope.
Background technology
Current nearly all multikilowatt power consumption equipment is all using tangible medium (as: plain conductor, electric wire) just can carry out the electric power power transfer as main connection; Even short distance electric power transfer (as: robot, electric automobile); Also will pass through power line connects; Making need be with the electric equipment of electric power as power, and its use receives the influence of each charging station or cable power.If use wireless power transmission technology and device, realize not transmitted by the active power of foreign object or surrounding environment influence, just can reach the transmission of electric power through wireless transmission means, when using these electric equipments, just convenient so.In addition, in some special application places, maybe can not use the occasion of lead power supply all to have very actual using value like inconveniences such as underwater operation, medical embedded equipment, wireless sensor networks.
Wireless power transmission mainly contains three kinds of modes at present: induction, and electromagentic resonance formula and electromagnetic radiation formula.Induction, the general primary end of band magnetic core and the transformer secondary output end of band magnetic core of adopting carries out electrical energy transfer through the close coupling of two magnetic core electromagnetic fields, and the electric energy energy grade of transmission is high, and electric energy transmitting is apart from weak point, in several cm range; The electromagentic resonance formula is carried out electrical energy transfer through the magnetic field loose coupling of adopting primary coil and secondary coil, and transmission range generally between several centimetres to tens centimetres, belongs to the electric energy transmitting of moderate distance, and the energy grade of electric energy transmitting is higher; The electromagnetic radiation formula, the frequency level of employing is very high, is generally tens MHz, and the distance of transmission can reach meter level, can transmit tens electric energy to several hectowatts usually.
One Chinese patent application CN200610124129.9 provides a kind of inductive coupled wireless power transfer device; It comprises energy transmitter; Contactless transformer and energy receiver; Said energy transmitter comprises current rectifying and wave filtering circuit, high-frequency inverter circuit and is used to produce the control circuit of proper frequency and pulse width signal; The power frequency civil power of input at first produces HVDC supply high frequency inverter circuit through current rectifying and wave filtering circuit, and high-frequency inverter circuit converts electric energy to high-frequency alternating current and outputs to contactless primary end; The primary and secondary magnetic core of contactless transformer is separate, and coil is wound on respectively on the corresponding magnetic core; Energy receiver comprises compensating circuit, current rectifying and wave filtering circuit and is used for Control current or the pwm control circuit of the stable output of voltage that compensating circuit receives the energy of contactless transformer secondary output end induction coupling after over commutation filter circuit and pwm control circuit form stable output.But its laser propagation effect is not good.Because transformer has magnetic core, so electric energy transmitting is apart from weak point in this patent, can only be in several cm range electric energy transmitting, can't realize the electric energy transmitting of moderate distance.
But providing a kind of, one Chinese patent application CN200910166188.6 do not need direct electric connection to touch the just system of electric energy transmitting; Said system comprises primary unit, at least one second unit that separates with said primary unit and electric energy transmitting face; When said electric energy transmitting face is formed and is configured such that proper said system in use; Second unit can be placed on said or near said to receive electric energy; Wherein: said primary unit has a generating apparatus, is arranged in said electric energy transmitting face place or is parallel to said electric energy transmitting face, is used on said electric energy transmitting zone, generating electromagnetic field; Said second unit or each said second unit comprise at least one electric conductor; When said second unit is on the said electric energy transmitting face or during near said electric energy transmitting face; Said said electromagnetic field and said at least one electric conductor coupling that generating apparatus generates; And induce electric current, in said conductor, flow; Said electric energy transmitting zone is greater than said the zone that is covered by said second unit; Said field distribution is on said electric energy transmitting zone; Make when with second unit with the face that is placed on the arbitrary position in the electric energy transmitting zone about at least one gyrobearing perpendicular to said axle on or said the normal of edge through any such position in the said electric energy transmitting zone be placed on said when neighbouring, this second unit can receive the electric energy from said primary unit; And said generating apparatus comprises one or more conducting pieces; Be used to produce magnetic flux; And comprise be arranged on whole basically said electric energy transmitting location or under magnetic material; Said magnetic material be used for being coupled with the magnetic flux that produces by said conducting piece and with said magnetic flux distributions for being parallel to said electric energy transmitting face, make and locate or in said given distance of distance and all have basic big or small uniformly on all basically said positions of field intensity in said electric energy transmitting zone of the said electromagnetic field that can be applicable to measure on the predetermined work direction of closed position at said.This patent structure is comparatively complicated, and the electric current in the transmission region is little, and the electric energy energy grade of transmission is low, can't realize powerful electric energy transmitting in the moderate distance scope.
In addition, the wireless power transmission technology is a kind of non-contact type electric energy transmission technology.Theoretical according to electric energy transmitting, along with scientific and technological progress and social demand, the wireless power transmission technology is greatly developed, and resonant wireless power transmission technology more and more becomes the focus that people pay close attention in recent years, and lot of domestic and foreign scholar is in this problem of research.The research group of the assistant professor Marin Soljacic of department of physics of Massachusetts Institute Technology in 2006,2.16 meters the 60W bulb of will being separated by is lighted.The distance of this scheme transmission is distant, but energy grade is lower.
For the needs of more convenient production and actual life, need a kind of equipment or the method that can carry high-power electric energy transmission badly.
Summary of the invention
To the problems referred to above, the present invention proposes a kind of moderate distance multikilowatt wireless electric energy transmission device, this moderate distance multikilowatt wireless electric energy transmission device can realize that the sinusoidal wave generation of multikilowatt, multikilowatt radio energy are carried, the multikilowatt radio energy receives.Moderate distance multikilowatt wireless electric energy transmission device can provide the wireless power energy for plurality of devices, perhaps can be used for wireless charging or wireless power, is specially adapted to be not suitable for the special occasions through the lead power supply.
According to technical scheme of the present invention; A kind of moderate distance multikilowatt wireless electric energy transmission device is provided; It comprises the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller; Wherein the sinusoidal wave power delivery device of multikilowatt receives electric energy from electrical network, to multikilowatt electric energy receiver wireless transmission electric energy, is to get in touch through mutual inductance between sinusoidal wave power delivery device of multikilowatt and the multikilowatt electric energy receiver; Multikilowatt electric energy receiver obtains electric energy through the magnetic field that the sinusoidal wave power delivery device of multikilowatt produces, and supplies follow-up load to use; Frequency controller can be gathered the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver; And sinusoidal wave power delivery device of multikilowatt or multikilowatt electric energy receiver are regulated according to regulating flow process; Thereby make the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver reach resonance state, make described moderate distance multikilowatt wireless electric energy transmission device reach optimum electric energy transmitting.
Wherein the moderate distance scope be referred to as 5cm (centimetre) between the 50cm.
Further; Said moderate distance multikilowatt wireless electric energy transmission device comprises the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller; Wherein, the sinusoidal wave power delivery device of multikilowatt is made up of current source, resonant energy supplementary circuitry resonant energy output circuit; The resonant energy supplementary circuitry is made up of switch element one (SW1) and switch element two (SW2), by the frequency and the phase place of regulation electric energy is replenished to the resonant energy output circuit; The resonant energy output circuit is made up of resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance, and resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance constitute resonator system; This resonator system is used to set the sinusoidal wave power delivery device of multikilowatt frequency; And realize that energy exchanges with magnetic field and electric field form respectively in resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance; In the resonance output winding, produce the resonance current of assigned frequency, and resonance current in the resonance output winding is formed can be at the alternating magnetic field of electric energy transmitting scope inner conversion; Multikilowatt electric energy receiver, it is used to receive the magnetic field energy of the alternating magnetic field of coming through the coupling of resonance output winding; Multikilowatt electric energy receiver receives electric capacity, resonance receiving coil, turnable resonator reception electric capacity and turnable resonator receiving inductance by resonance to be formed, and resonance reception electric capacity, resonance receiving coil, turnable resonator reception electric capacity, turnable resonator receiving inductance are used to set the frequency of multikilowatt electric energy receiver; Frequency controller is used for adjusting the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver; Make the frequency of the sinusoidal wave power delivery device of multikilowatt identical, make multikilowatt electric energy receiver in the regulation space, receive optimum resonant energy with the frequency of multikilowatt electric energy receiver.
Preferably; Sinusoidal wave power delivery device frequency of multikilowatt and multikilowatt electric energy receiver frequency range are at 50KHZ-1MHZ; The electric energy power bracket 0-30KW of moderate distance multikilowatt wireless electric energy transmission device transmission, space length 5-50cm between resonance output winding and resonance receiving coil.
More preferably, frequency controller is adjusted the sinusoidal wave power delivery device of multikilowatt frequency through regulating turnable resonator output capacitance or turnable resonator outputting inductance, makes the frequency of the sinusoidal wave power delivery device of multikilowatt and the Frequency Synchronization of multikilowatt electric energy receiver.
Further, frequency controller is confirmed the output frequency size through detecting resonance output winding voltage waveform.Frequency controller is adjusted multikilowatt electric energy receiver frequency through regulating turnable resonator reception electric capacity or turnable resonator receiving inductance, makes the frequency of multikilowatt electric energy receiver and the Frequency Synchronization of the sinusoidal wave power delivery device of multikilowatt.Frequency controller is confirmed the size of receive frequency through detecting the voltage in the load.
In addition; Resonance output winding resonant receiving coil adopts copper pipe (or copper cash) coiling; Be single turn or a plurality of single turn parallel-connection structure; Single-turn circular coil is of a size of 10cm～45cm in the resonance output winding resonant receiving coil, and the turn-to-turn distance is 0.1-5cm, and resonance output winding resonant receiving coil is circular or multiple shapes such as square or polygon.
The invention solves wireless transmission electric energy energy grade problem of lower in the moderate distance scope.Moderate distance multikilowatt wireless electric energy transmission device has frequency controller; Can regulate the both sides oscillatory regime; Make the advantage of device steady operation in optimum resonance operating state; Can be applied to the radio car charging at present accurately to the large power, electrically energy of multikilowatt electric energy receiver transmission multikilowatt, more large-scale mobile electromechanical equipment is supplied power and other are than application scenarios such as high power load power consumption equipment power supplies.
Description of drawings
Fig. 1 circuit diagram;
Fig. 2 moderate distance multikilowatt wireless electric energy transmission device structural representation;
Fig. 3 parallel resonance equivalent circuit diagram;
Fig. 4 turnable resonator output capacitance C12 syndeton sketch map;
Fig. 5 resonance output winding L11 oscillogram;
Fig. 6 resonance receiving coil L21 oscillogram;
Fig. 7 frequency controller sketch map;
Fig. 8 frequency sampling plate sketch map;
Signal generator wiring schematic diagram when Fig. 9 has a multikilowatt electric energy receiver
Figure 10 frequency adjustment logic flow sketch map;
Frequency was specifically regulated schematic flow sheet when Figure 11 had a multikilowatt electric energy receiver;
Frequency was specifically regulated schematic flow sheet when Figure 12 had n multikilowatt electric energy receiver;
Figure 13 logic controller master unit wiring schematic diagram;
Figure 14 logic controller expanding element one wiring schematic diagram;
Figure 15 logic controller expanding element two wiring schematic diagrams;
Figure 16 resonance output winding resonant receiving coil sketch map
Embodiment
In the present invention; Described moderate distance multikilowatt wireless electric energy transmission device; Constitute by the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller, can wireless transmission multikilowatt electric power energy, contact takes place through mutual inductance in them.
Circuit diagram of the present invention is as shown in Figure 1.The sinusoidal wave power delivery device of described multikilowatt receives electric energy from electrical network, and to described multikilowatt electric energy receiver wireless transmission electric energy, they through mutual inductance contact take place.Multikilowatt electric energy receiver obtains electric energy through the magnetic field that the sinusoidal wave power delivery device of multikilowatt produces, and supplies load to use.Frequency controller can be gathered the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver; And sinusoidal wave power delivery device of multikilowatt or multikilowatt electric energy receiver are regulated according to regulating flow process; Thereby make the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver reach resonance state, make described moderate distance multikilowatt wireless electric energy transmission device reach optimum electric energy transmitting.
Described moderate distance multikilowatt wireless electric energy transmission device can be realized the electric energy transmitting of multikilowatt in the moderate distance scope.In the present invention, the moderate distance scope is referred to as between the 1cm to 80cm.Use the present invention, can about 22cm, locate to realize transmission 10KW (kilowatt) electric energy, the present invention preferably uses at 1-60cm, more preferably uses between 5-50cm.Can know that according to current research and art technology knowledge if use in short more distance, laser propagation effect is good more, but electromagnetic radiation will be strong more, will greatly cause electromagnetic pollution to surrounding environment.Through experiment, between apart from 10-40cm, use technology of the present invention, the electromagnetic pollution to surrounding environment is controlled under the electromagnetic pollution numerical value of national regulation, can also realize the wireless unobstructed transmission of electric energy.
The sinusoidal wave power delivery device of described multikilowatt has current source, resonant energy supplementary circuitry resonant energy output circuit.The resonant energy supplementary circuitry is replenished electric energy to the resonant energy output circuit by the frequency and the phase place of regulation; The resonant energy output circuit is made up of resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance; Resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance constitute resonator system; Be used to set the sinusoidal wave power delivery device of multikilowatt frequency; Energy exchanges with magnetic field and electric field form in resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance respectively, in the resonance output winding, produces the resonance current of assigned frequency; Resonance current in the resonance output winding is formed on the alternating magnetic field in the electric energy transmitting scope.
Described multikilowatt electric energy receiver is used to receive the magnetic field energy that the coupling of resonance output winding is come; Multikilowatt electric energy receiver receives electric capacity, resonance receiving coil, turnable resonator reception electric capacity and turnable resonator receiving inductance by resonance and forms; Resonance reception electric capacity, resonance receiving coil, turnable resonator reception electric capacity, turnable resonator receiving inductance are used to set the frequency of multikilowatt electric energy receiver.
The sinusoidal wave power delivery device of described multikilowatt obtains electric energy through current source from electrical network, and gives the resonant energy supplementary circuitry NE BY ENERGY TRANSFER.Turnable resonator output capacitance and resonance output capacitance in the resonant energy output circuit are to be connected in parallel, and turnable resonator outputting inductance and resonance output winding adopt the back that is connected in series to be connected in parallel with the resonance output capacitance; It is to be connected in parallel that turnable resonator in the multikilowatt electric energy receiver receives electric capacity resonant reception electric capacity, and turnable resonator receiving inductance and resonance receiving coil adopt the back that is connected in series to receive electric capacity with resonance and be connected in parallel.A plurality of multikilowatt electric energy receivers can be arranged in the moderate distance multikilowatt wireless electric energy transmission device.
Frequency controller is used for adjusting frequency, and makes the frequency of the sinusoidal wave power delivery device of multikilowatt identical with the frequency of multikilowatt electric energy receiver, in the regulation space, makes multikilowatt electric energy receiver receive optimum resonant energy.
In moderate distance multikilowatt wireless electric energy transmission device; Resonance output winding resonant receiving coil adopts copper pipe (or copper cash) coiling; Be single turn or a plurality of single turn parallel-connection structure; Coil is of a size of 10cm～45cm in the resonance output winding resonant receiving coil, and turn-to-turn distance is 0.1-5cm, and resonance output winding resonant receiving coil is shapes such as circular, square, polygon; The structure of process simple deformation is in the claim scope.In the moderate distance multikilowatt wireless electric energy transmission device; Sinusoidal wave power delivery device frequency of multikilowatt and multikilowatt electric energy receiver frequency range are at 50KHZ-1MHZ; The electric energy power bracket 0-30KW of transmission, space length 5-50cm between resonance output winding and resonance receiving coil.
Specify moderate distance multikilowatt wireless electric energy transmission device of the present invention below in conjunction with accompanying drawing, bright as just as an exampleBSEMGVR takeN-PSVSEMOBJ below, know with those skilled in the art know that, all fall among the present invention as long as meet the method and system of inventive concept; Additionally, should protection scope of the present invention only be limited to the concrete parameter of the concrete structure or the parts of moderate distance multikilowatt wireless electric energy transmission device.
Fig. 2 is a moderate distance multikilowatt wireless electric energy transmission device structural representation.
Moderate distance multikilowatt wireless electric energy transmission device is made up of the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller.Obtain electric energy through current source from electrical network in the sinusoidal wave power delivery device of multikilowatt, and give the resonant energy supplementary circuitry NE BY ENERGY TRANSFER, the output of current source is that P point and Q point and P point and Q point are the input point of described resonant energy supplementary circuitry simultaneously.A plurality of multikilowatt electric energy receivers can be arranged in the moderate distance multikilowatt wireless electric energy transmission device.The sinusoidal wave power delivery device of multikilowatt comprises current source, resonant energy supplementary circuitry resonant energy output circuit.The resonant energy supplementary circuitry is made up of switch element one SW1 and switch element two SW2, by the frequency and the phase place of regulation electric energy is replenished to the resonant energy output circuit; The resonant energy output circuit is made up of resonance output capacitance C11, resonance output winding L11, turnable resonator output capacitance C12, turnable resonator outputting inductance L12, and C11, L11, C12, L12 constitute resonator system jointly and set the sinusoidal wave power delivery device of multikilowatt frequency f s.Energy exchanges the generation alternating magnetic field of the resonance current in the resonance output winding in the electric energy transmitting scope with magnetic field and electric field form respectively in resonator system.
The sinusoidal wave power delivery device of multikilowatt will obtain electrical energy transfer from electrical network through current source and give the resonant energy supplementary circuitry.The output of current source is P point and Q point, and the P point is connected the input of resonant energy supplementary circuitry with the Q point.Output voltage through adjusting P point and Q are ordered can be regulated the energy size that the resonant energy supplementary circuitry is exported electric energy.Through detecting the frequency of resonance output winding L11 both sides in the resonant energy output circuit, the resonant energy supplementary circuitry is confirmed the frequency and the phase place moment of makeup energy, and energy is ceaselessly carried to the resonance receiving coil by the resonance output winding.The output of resonant energy supplementary circuitry is connected in T and T2.
Described resonant energy supplementary circuitry is obtained electric energy through P point and Q point from current source, and the resonant energy supplementary circuitry comprises switch element one SW1 and switch element two SW2.Resonant energy supplementary circuitry output is T point and T2 point, and switch element-SW1 is connected between P point and the T2 point, and switch element two SW2 are connected between P point and the T point.The work of switch element one SW1 and switch element two SW2 alternate turns, be nanosecond (ns) level overlapping time, overlapping time of the present invention, scope was 100-450ns.
Resonant energy replenishes process: when switch element two SW2 conductings, switch element one SW1 breaks off, and this moment, electric energy directly injected the resonant energy output circuit; When switch element one SW1 conducting, switch element two SW2 break off, and this moment, electric energy was back to current source through SW1.Switch element SW1 and switch element SW2 conducting have certain overlapping time with turn-offing, and guarantee the operate as normal of current source.
Multikilowatt electric energy receiver; Be used to receive the magnetic field energy that the coupling of resonance output winding is come; Receive capacitor C 21, resonance receiving coil L21, turnable resonator reception capacitor C 22 and turnable resonator receiving inductance L22 by resonance and form, C21, L21, C22, L22 constitute resonator system and are used to set the frequency f r of multikilowatt electric energy receiver.
The resonant energy output circuit is made up of resonance output capacitance C11, resonance output winding L11, turnable resonator output capacitance C12, turnable resonator outputting inductance L12.C12 in the resonant energy output circuit and C11 are connected in parallel, and C12 and C11 are connected between T and the T2, and L12 and L11 adopt the back that is connected in series to be connected in parallel with C11, and L12 is connected between T and the T1, and L11 is connected between T1 and the T2; Multikilowatt electric energy receiver receives capacitor C 21, resonance receiving coil L21, turnable resonator reception capacitor C 22, turnable resonator receiving inductance L22 and receive frequency control circuit by resonance and forms.Wherein, C22 and C21 in the multikilowatt electric energy receiver are connected in parallel, and C22 and C21 are connected between S1 and the S2, and L22 and L21 adopt the back that is connected in series to be connected in parallel with C21, and L22 is connected between S and the S1, and L21 is connected between S and the S2.
In the LC antiresonant circuit, equivalent circuit diagram is as shown in Figure 3.If R
1=R '
1+ R
L, then parallel circuits resultant admittance
Then condition of resonance is:
Solve by formula (1):
Formula (2) is actual resonance circular frequency, and can be known by (2): R
1, R
2Must be simultaneously greater than (or simultaneously less than)
Be the necessary condition of parallel resonance, and R is only arranged
1=R
2The time, the resonance circular frequency is only
Because R
2Be capacity loss impedance, R
LBe the impedance of inductance coil copper loss, can be similar to constant, and R
1Be load reflection equiva lent impedance, R
1Loss becomes with load size and coupling situation, thereby ω
0Always to change.Designed frequency controller in the present invention, frequency controller makes the frequency of sinusoidal wave power delivery device of multikilowatt and multikilowatt electric energy receiver consistent through adjustment L12, C12, L22, C22.
Can adjust the frequency f s of the sinusoidal wave power delivery device of multikilowatt and the frequency f r of multikilowatt electric energy receiver at moderate distance multikilowatt wireless electric energy transmission device medium frequency controller.Regulating principle is the fixing wherein frequency of a side, regulates opposite side inductance or electric capacity, makes it identical with the fixation side frequency, and both can not adjust simultaneously.Can make it synchronous through the frequency f r of frequency controller adjustment multikilowatt electric energy receiver with the frequency f s of the sinusoidal wave power delivery device of multikilowatt.In like manner, also can make it synchronous through the frequency f s of the sinusoidal wave power delivery device of frequency controller adjustment multikilowatt with the frequency f r of multikilowatt electric energy receiver.When resonance output frequency and resonance receive frequency are inconsistent, can regulate turnable resonator electric capacity earlier and make two frequencies approaching, regulate the turnable resonator inductance again and make it consistent.
Turnable resonator output capacitance and turnable resonator receive electric capacity and can be made up of N electric capacity; Turnable resonator output capacitance C12 is composed in parallel by C121, C122, three electric capacity of C123 in the present embodiment, and turnable resonator receives capacitor C 22 and composed in parallel by three electric capacity such as C221, C222, C223.
The turnable resonator output capacitance is identical with principle and structure that turnable resonator receives the capacitance adjustment frequency, and regulating turnable resonator output capacitance C12 with the output frequency control circuit is example explanation frequency adjustment process, and turnable resonator output capacitance C12 syndeton is as shown in Figure 4.Turnable resonator output capacitance C12 is composed in parallel by C121, C122, three electric capacity of C123, and C121, C122, C123 turn on and off switching through K1, K2, K3 respectively.C121 is connected between T and 11, and C122 is connected between T and 12, and C123 is connected between T and 13; K1 be connected in 11 and T2 between, K2 be connected in 12 and T2 between, K3 be connected in 13 and T2 between.Wherein the capacitance of C121 is a unit 1; The capacitance of C122 is a unit 2; The capacitance of C123 is a unit 4, when needs are regulated the resonance output frequency, only needs the connecting and disconnecting state of diverter switch K1, K2, K3 can realize changing the capacitance of C12; The grade of capacitance is 0,1,2,3,4,5,6,7, and then changes the sinusoidal wave power delivery device of multikilowatt frequency.This power transformation is held the way that changes frequency and is belonged to the segment frequence control method, and adjustable scope is relatively large, is not more than 30% usually.
The control method of turnable resonator outputting inductance and turnable resonator receiving inductance is similar; Turnable resonator outputting inductance and turnable resonator receiving inductance inside are cored, on the inductance vertical direction, can realize the change of inductance value with the degree that overlaps of inductance through regulating iron core.This inductance variation belongs to continuous regulating frequency method, and the scope of adjusting is less, is not more than 10% usually.
As shown in Figure 5, it is high_frequency sine wave that resonance output winding L11 goes up voltage waveform, and it also is high_frequency sine wave that resonance receiving coil L21 shown in Figure 6 goes up voltage waveform.The voltage waveform same frequency of resonance output winding and resonance receiving coil, amplitude is different.The amplitude of resonance receiving coil voltage waveform and the distance dependent between coil, distance is big more near amplitude more, and distance is far away more, and amplitude is more little.
Resonance output winding L11 resonant receiving coil L21 adopts copper pipe (or copper cash) coiling; Be single turn or a plurality of single turn parallel-connection structure; Single-turn circular coil is of a size of 10cm～45cm among the resonance output winding L11 resonant receiving coil L21; Turn-to-turn distance is 0.1-5cm, and resonance output winding L11 resonant receiving coil L21 is shapes such as circular, square, polygon; The structure of process simple deformation is in the claim scope.In moderate distance multikilowatt wireless electric energy transmission device; The frequency f s of the sinusoidal wave power delivery device of multikilowatt and the frequency f r scope of multikilowatt electric energy receiver are at 50KHZ-1MHZ; The electric energy power bracket 0-30KW of moderate distance multikilowatt wireless electric energy transmission device transmission, space length 5-50cm between resonance output winding and resonance receiving coil.
The electric energy that receives in the resonant energy output circuit can use by supply load.If load R is an AC load, can be connected the position of R among Fig. 2; If load R is a DC load, must be through supply load R after the AC/DC rectification.
The distance (after this, being called " coil-span leaves ") of 5cm to 50cm is set between the resonance output winding resonant receiving coil.Moderate distance multikilowatt wireless electric energy transmission device is from the device of resonance output winding to resonance receiving coil electric energy transmitting with wireless mode.Because the power grade that transmits than higher, adopts the copper pipe coiling.With two coils of copper pipe coiling: a resonance output winding, a resonance receiving coil.
This device is that example describes so that a multikilowatt electric energy receiver to be arranged in the moderate distance multikilowatt wireless electric energy transmission device, if a plurality of multikilowatt electric energy receivers are arranged, only needs increase frequency sampling plate and regulate control accordingly to get final product.
Frequency controller is made up of frequency sampling plate one, frequency sampling plate two and logic controller, and is as shown in Figure 7.Capacitor C 12, C22 are made up of three electric capacity respectively in the present embodiment.U1 representes the voltage of L11 both sides, and U2 representes the voltage of R both sides, and A1 representes advancing of turnable resonator outputting inductance; A2 representes moving back of turnable resonator outputting inductance, and A3 representes the switch of turnable resonator output capacitance one, and A4 representes the switch of turnable resonator output capacitance two; A5 representes the switch of turnable resonator output capacitance three; A6 representes advancing of turnable resonator receiving inductance, and A7 representes moving back of turnable resonator receiving inductance, and A8 representes that turnable resonator receives the switch of electric capacity one; A9 representes that turnable resonator receives the switch of electric capacity two, and A10 representes that turnable resonator receives the switch of electric capacity three.Sequence number does not define particular location among the figure, just the description of function.
Frequency sampling plate one is identical with frequency sampling plate two functions, and its function is for to convert sine wave signal into square-wave signal.Frequency sampling plate one has two inputs; Two outputs, its input is connected in the two ends of resonance output winding L11, is used to detect the voltage U 1 of L11 both sides; Its output is connected to logic controller, the frequency f s of the sinusoidal wave power delivery device of logic controller metering multikilowatt.Frequency sampling plate two has two inputs, two outputs, and its input is connected in the two ends of load R, is used to detect the voltage U 2 of R both sides, and its output is connected to logic controller, the frequency f r of the sinusoidal wave electric energy receiver of logic controller metering multikilowatt.With frequency sampling plate one is that example describes, and as shown in Figure 8, input is 1 and 2, and output is 3 and 4, and the voltage U 1 at resonance output winding L11 two ends is connected to 1 and 2, and output 3 and 4 is connected to logic controller.U1 is connected to freq converting circuit behind reduction voltage circuit, the function of freq converting circuit is for to convert the high-frequency sine wave signal U1 after the step-down into high-frequency square-wave signal; High-frequency square-wave signal passes through frequency dividing circuit again, and frequency dividing circuit becomes the square-wave signal of lower frequency after with high-frequency square-wave signal frequency reducing, makes things convenient for PLC to gather; The square-wave signal of lower frequency is connected to output 3 and 4 through after the Signal Spacing.The user of frequency dividing circuit logic controller carry out the signals collecting of frequency.
The parameter term of reference of device in the frequency sampling plate:
C1 appearance value scope is 10nf-4.7uf, and 100nf is selected in this enforcement for use;
C2 appearance value scope is 10pf-470pf, and 68pf is selected in this enforcement for use;
C3 appearance value scope is 10pf-220pf, and 33pf is selected in this enforcement for use;
The R1 Standard resistance range is 100 Ω-500 Ω, and 250 Ω are selected in this enforcement for use;
The R2 Standard resistance range is 47 Ω-470 Ω, and 100 Ω are selected in this enforcement for use;
The R3 Standard resistance range is 47 Ω-470 Ω, and 100 Ω are selected in this enforcement for use;
The R4 Standard resistance range is 47 Ω-470 Ω, and 100 Ω are selected in this enforcement for use;
The R5 Standard resistance range is 47 Ω-470 Ω, and 100 Ω are selected in this enforcement for use;
The R6 Standard resistance range is 470 Ω-47K Ω, and 2.2K Ω is selected in this enforcement for use;
The R7 Standard resistance range is 470 Ω-47K Ω, and 2.2K Ω is selected in this enforcement for use;
The R8 Standard resistance range is 100K Ω-2M Ω, and 680K Ω is selected in this enforcement for use;
The R9 Standard resistance range is 100 Ω-8.2K Ω, and 1.1K Ω is selected in this enforcement for use;
The R10 Standard resistance range is 1K Ω-20K Ω, and 4.7K Ω is selected in this enforcement for use;
The R11 Standard resistance range is 330 Ω-4.7K Ω, and 1K Ω is selected in this enforcement for use;
The R12 Standard resistance range is 330 Ω-4.7K Ω, and 1K Ω is selected in this enforcement for use;
The R13 Standard resistance range is 82K Ω-1M Ω, and 470K Ω is selected in this enforcement for use;
The R14 Standard resistance range is 100 Ω-4.7K Ω, and 470 Ω are selected in this enforcement for use;
D4-D7 is a diode, and IN4148 is selected in this enforcement for use.
Logic controller is regulated the inductance value of turnable resonator outputting inductance L12 through the relative position of iron core and turnable resonator outputting inductance in A1 and the A2 control turnable resonator outputting inductance; Select the connecting and disconnecting of corresponding capacitance switch to regulate the capacitance of turnable resonator output capacitance C12 through A3, A4, A5, thereby change the frequency f s of the sinusoidal wave power delivery device of multikilowatt through the adjusting of L12, C12; Regulate the inductance value of turnable resonator receiving inductance L22 through the relative position of iron core and turnable resonator receiving inductance in A6 and the A7 control turnable resonator receiving inductance; Select the connecting and disconnecting of corresponding capacitance switch to regulate the capacitance that turnable resonator receives capacitor C 22 through A8, A9, A10, thereby change the frequency f r of the sinusoidal wave electric energy receiver of multikilowatt through the adjusting of L22, C22.
Logic controller passes through the adjustment to the frequency f r of the frequency f s of the sinusoidal wave power delivery device of multikilowatt and the sinusoidal wave electric energy receiver of multikilowatt; Frequency f s and fr are reached unanimity; Thereby make the wireless electric energy transmission device both sides reach the resonance frequency state, realize the optimum transmission of radio energy.
During frequency adjustment, signal generator needs in the place in circuit, signal generator wiring such as Fig. 9 when a multikilowatt electric energy receiver is arranged.Signal generator one is connected in the two ends of L11 in the sinusoidal wave power delivery device of multikilowatt, and signal generator two is connected between S1 and the S2.
The frequency adjustment logic flow sketch map of logic controller is shown in figure 10.
The first step: frequency preconditioning is prepared
Second step: frequency logic determines
The 3rd step: frequency adjustable joint device course of action
The 4th step: warning processing procedure
The 5th step: the frequency adjustment finishes
More than the flow process signal that is the frequency adjustment logic flow of five steps, each step all comprises different movement contents, partial content is as follows:
In the preconditioning of first step frequency is prepared,
1, carries out procedure Selection through foreign frequency preconditioning button.
2, main circuit power is broken off.
3, signal generator is inserted in the loop.
The changing cell that 4, will influence frequency is adjusted to suitable position.
5, set resonance permissible variation frequency range and electric capacity threshold values.
6, two frequencies in the acquisition circuit, the calculated rate error.
In the second synchronizing frequency logic determines,
1, when the difference of two frequencies is big, regulates coupling through turnable resonator electric capacity.
2, when the difference of two frequencies hour, regulate coupling through the turnable resonator inductance.
3, when the difference of two frequencies during, think that two frequencies are resonance condition less than the resonance permissible variation.
When 4, having greater than two frequency, can regulate related device earlier and make any frequency of outlet side frequency less than receiver side, and then regulate the frequency of receiver side, the frequency error that makes both sides is in the scope that resonance error allows.Also can adopt opposite method or adopt to the intermediate frequency value near control method.This link purpose is that formulating with which frequency is the adjusting foundation, thereby confirms the direction of the corresponding adjusting of frequency adjustable device.
In the 3rd synchronizing frequency scalable device course of action,
1, to the adjusting of turnable resonator electric capacity:, corresponding electric capacity is regulated through the difference of two frequencies and the multiple relation of electric capacity threshold values; Regulative mode turn-offs or connects action for selecting corresponding capacitance switch.
2, to the adjusting of turnable resonator inductance: when the difference of two frequencies less than the electric capacity threshold values, during simultaneously again greater than permissible variation, the turnable resonator inductance is regulated; Control method is for advancing the relative vertical position of iron core in the inductance or moving back.
3, adjustable device can be automatic regulative mode or manual adjustments mode.
In the 4th step warning processing procedure,
1, the number of establishing capacitance switch is N, when the difference of two frequencies greater than (2 of electric capacity threshold values
N-1) in the time of times, frequency-splitting is too big, the frequency overload alarm.
2, when a plurality of receiver, if when the frequency of outlet side can't be adjusted to less than any one receiver side frequency, the frequency overload alarm.
3, spacing and when advancing spacing action when moving back of controllable impedance, the frequency overload alarm.
4, other are reported to the police and handle.
In the 5th synchronizing frequency adjustment terminal procedure,
Usually get into frequency adjustment terminal procedure during less than permissible variation as frequency alarm or frequency adjustment back.When reporting to the police, need carry out manual adjustment to device, make frequency error less than permissible error; Think that less than the deviation that allows both sides are in resonance condition when the adjusted frequency error of frequency, can transmit radio energy efficiently.
In the frequency adjustment logic flow, the above functional descriptions that is described as does not have the strict step content that indicates, and the particular content of step can be regulated as the case may be.
Frequency adjustment flow process embodiment one: to have only a multikilowatt electric energy receiver in this device is that embodiment explains frequency adjustment flow process, shown in figure 11.The frequency of supposing the resonant energy output circuit is fs; The frequency of multikilowatt electric energy receiver is fr; K11 (being also referred to as output capacitance one switch), K12 (being also referred to as output capacitance two switches), K13 (being also referred to as output capacitance three switches) are the capacitance switch of C12 (being also referred to as output capacitance), and K21 (be also referred to as and receive electric capacity one switch), K22 (be also referred to as and receive electric capacity two switches), K23 (be also referred to as and receive electric capacity three switches) are the capacitance switch of C22 (be also referred to as and receive electric capacity).The effect of frequency controller is to make fr equal fs basically, establishes Δ f=|fr-fs|, and F1 is for setting permissible error, thinks that the both sides frequency reaches resonance condition during Δ f≤F1.F2 is for setting the electric capacity threshold values, the changing value of frequency when being meant 1 unit of the every variation of switch combination logic of electric capacity.
In Figure 11; After selecting frequency preconditioning, current source, SW1 and SW2 all can not work, and this moment, signal generator 1 began to connect and work with signal generator 2; Again K11, K12, K13, K21, K22, K23 are all broken off; Then L12 (being also referred to as outputting inductance) and the inner adjustable iron core of L22 (being also referred to as receiving inductance) are all moved to the coil outside, at this moment, the frequency of both sides is a peak; The highest frequency of both sides by the logic controller collection, at first carries out frequency ratio and to judge the frequency of which side high through the frequency collection plate, and the position of iron core in switch or the inductance of electric capacity of which side is regulated in the frequency higher position of which side.Suppose that fs is high, if Δ f≤F1 thinks there is not deviation that end is regulated; If Δ f＞during F2, calculate Δ f and be F2 what doubly, round numbers, establishing multiple is N1; When N1 was 4,5,6,7, K13 was closed, and K12 is closed when N1 is 2,3,6,7; K11 is closed when N1 is 1,3,5,7, when N1 greater than 7 the time, frequency surpasses adjustable range and reports to the police; If F2＞Δ f＞F1, the turnable resonator outputting inductance of then regulating the fs side carries out frequency adjustment, regulates the back return frequency relatively, reports to the police when iron core in the inductance surpasses spacing (advance spacing with move back spacing) time.Suppose that fr is high, if Δ f≤F1 thinks there is not deviation that end is regulated; If Δ f＞during F2, calculate Δ f and be F2 what doubly, round numbers, establishing multiple is N2; When N2 was 4,5,6,7, K23 was closed, and K22 is closed when N2 is 2,3,6,7; K21 is closed when N2 is 1,3,5,7, when N2 greater than 7 the time, frequency surpasses adjustable range and reports to the police; If F2＞Δ f＞F1, the turnable resonator receiving inductance of then regulating the fr side carries out frequency adjustment, regulates the back return frequency relatively, reports to the police when iron core in the inductance surpasses spacing (advance spacing with move back spacing) time.
Frequency adjustment flow process embodiment two: when having n multikilowatt electric energy receiver, this device frequency adjustment flow process is described for embodiment, shown in figure 12.Suppose that the frequency in the resonant energy output circuit is fs, have n its frequency of multikilowatt electric energy receiver be respectively fr1, fr2 ..., frn, suppose that Ks1, Ks2, Ks3 are the capacitance switch of C12; Suppose that simultaneously Kr11, Kr12, Kr13 are the capacitance switch of adjustable reception resonant capacitance in the 1st the multikilowatt electric energy receiver, Krn1, Krn2, Knr3 are the capacitance switch of adjustable reception resonant capacitance in n the multikilowatt electric energy receiver.Ls2 is an electric energy receiver side turnable resonator outputting inductance, and Lrn2 is n turnable resonator receiving inductance of electric energy receiver side, and resonant energy output electric energy receiver quantity is n, and its structure is identical, and its frequency differs very little.The effect of frequency controller makes frn equal fs basically, establishes Δ fn=|frn-fs|, and F1 is for setting permissible error, thinks that the both sides frequency reaches resonance condition during Δ fn≤F1.F2 is for setting the electric capacity threshold values, the changing value of frequency when being meant 1 unit of the every variation of switch combination logic of electric capacity.
In Figure 12; After selecting frequency preconditioning; Current source, SW1 and SW2 all can not work, and this moment, signal generator 1 began to connect and work with signal generator 2, again with Ks1, Ks2, Ks3, Kr11, Kr12, Kr13 ..., Krn1, Krn2, Krn3 all break off; Then Ls2 (electric energy outlet side controllable impedance) and the inner iron core of Lrn2 (n controllable impedance of electric energy receiver side) are all moved to the coil outside, this moment, the frequency of both sides was a peak.All frequency, is at first regulated Ks1, Ks2, Ks3 and Ls2 and is made fs less than any one frn (after regulating fs, if frn is arranged greater than fs by the logic controller collection through the frequency collection plates; Then frequency surpasses adjustable range and reports to the police), it is poor then n electric energy receiver side frequency f rn and fs to be done, i.e. Δ fn=|frn-fs|; With n electric energy receiver frn is that example describes; If Δ fn≤F1 thinks not have deviation, finish to regulate; If Δ fn＞during F2, calculate Δ fn and be F2 what doubly, round numbers, establishing multiple is Nn; When Nn was 4,5,6,7, Kn3 was closed, and Kn2 is closed when Nn is 2,3,6,7; Kn1 is closed when Nn is 1,3,5,7, when Nn greater than 7 the time, frequency surpasses adjustable range and reports to the police; If F2＞Δ fn＞F1, then regulate in the turnable resonator inductance of n electric energy receiver the iron core position and carry out frequency adjustment, regulate the back return frequency relatively, warning when iron core position in the inductance surpasses spacing (advance spacing with move back spacing).
Logic controller as core cell, carries out program composition according to the frequency adjustment flow process by PLC, realizes frequency adjustment, and below explanation is an example with a multikilowatt electric energy receiver.PLC comprises input unit and output unit.Input unit comprises frequency collection, the capacitance switch hand push button, and controllable impedance limit switch and manually automatic switchover, wherein each capacitance switch is provided with a hand push button, and each controllable impedance has into spacing and moves back limit switch; Output unit comprises that capacitance switch is opened and turn-offs control, the advance and retreat control of controllable impedance and the output of reporting to the police, wherein, each capacitance switch is controlled separately, each controllable impedance is provided with into control and moves back control, in detail like Figure 13,14, shown in 15.The automatic/hand button is used for the switching frequency regulative mode.Be manual state when being input as 1,, frequency regulated through external capacitive and inductance hand push button.When being input as 0, be auto state, logic controller automatically adjusts according to program circuit.
The specific embodiment of logic controller: having a multikilowatt electric energy receiver with this device is example, shows that the input signal of logic controller is connected with the output signal, like Figure 13, Figure 14, shown in Figure 15.If a plurality of multikilowatt electric energy receivers are arranged, input signal is connected with the output signal and can carries out similar expansion for foundation by present embodiment.
Among Figure 13, input signal: IN1 representes that output frequency counting fs gets into PLC through the X0 passage and carries out data acquisition; IN2 representes that output frequency counting fr gets into PLC through the X1 passage and carries out data acquisition; IN3 representes frequency preconditioning selector button, connects the X2 terminal; IN4 representes the automatic/hand selector button, is connected in the X3 terminal; IN5 representes manual frequency-tracking, is connected in the X4 terminal; IN6 representes the switch manual adjustments button of turnable resonator output capacitance one, is connected in the X5 terminal; IN7 representes the switch manual adjustments button of turnable resonator output capacitance two, X6 terminal; IN8 representes the switch manual adjustments button of turnable resonator output capacitance three, is connected in the X7 terminal.Output signal: OUT1 representes through Y0 the turnable resonator outputting inductance to be advanced to control; OUT2 representes the capable control of setback to the turnable resonator outputting inductance through Y1; OUT3 represent through Y2 to the turnable resonator receiving inductance advance to control, OUT4 representes the capable control of setback to the turnable resonator receiving inductance through Y3.
Among Figure 14, what input signal: IN9 represented the turnable resonator outputting inductance advances the manual adjustments button, connects the X10 terminal; What IN10 represented the turnable resonator outputting inductance moves back the manual adjustments button, connects the X11 terminal; IN11 representes that turnable resonator receives the switch manual adjustments button of electric capacity one, connects the X12 terminal; IN12 representes that turnable resonator receives the switch manual adjustments button of electric capacity two, connects the X13 terminal; IN13 representes that turnable resonator receives the switch manual adjustments button of electric capacity three, connects the X14 terminal; What IN14 represented the turnable resonator receiving inductance advances the manual adjustments button, connects the X15 terminal, and what IN15 represented the turnable resonator receiving inductance moves back the manual adjustments button, connects the X16 terminal.Output signal: OUT5 representes through terminal Y10 the switch of turnable resonator output capacitance one to be switched on and off control; OUT6 representes through terminal Y11 the switch of turnable resonator output capacitance two to be switched on and off control; OUT7 representes through terminal Y12 the switch of turnable resonator output capacitance three to be switched on and off control; OUT8 representes that through terminal Y13 turnable resonator reception electric capacity one being driven into row switches on and off control; OUT9 representes that through terminal Y14 turnable resonator reception electric capacity two being driven into row switches on and off control, and OUT10 representes that through terminal Y15 turnable resonator reception electric capacity three being driven into row switches on and off control.
In Figure 15, it is spacing that IN16 representes that the turnable resonator outputting inductance advances, and is connected in the X20 terminal; It is spacing that IN17 representes that the turnable resonator outputting inductance moves back, and is connected in the X21 terminal; It is spacing that IN18 representes that the turnable resonator receiving inductance advances, and is connected in the X22 terminal; It is spacing that IN19 representes that the turnable resonator receiving inductance moves back, and is connected in the X23 terminal.
In an embodiment, major parameter term of reference:
Switch element SW1 and SW2 can be IGBT or POWER MOSFET, and each switch element can also can adopt many parallel connections for only single.It is IRF460 that model is selected in this enforcement for use, 24 parallel connections;
Resonance output capacitance C11 can only also can be many connection in series-parallel for single, parameter area 0.01 μ F-10 μ F, and 0.66 μ F is selected in this enforcement for use, and withstand voltage is 600V;
Turnable resonator output capacitance C12, parameter area 0.01 μ F-5 μ F, 0.33 μ F is selected in this enforcement for use, and withstand voltage is 600V;
Resonance outputting inductance L11, parameter area 0.01 μ H-20 μ H, 0.3 μ H is selected in this enforcement for use;
Turnable resonator outputting inductance L12, parameter area 0.01 μ H-20 μ H, 0.2 μ H is selected in this enforcement for use;
Resonance receives capacitor C 21, can only also can be many connection in series-parallel for single, parameter area 0.01 μ F-10 μ F, and 0.33 μ F is selected in this enforcement for use, and withstand voltage is 600V;
Turnable resonator receives capacitor C 22, parameter area 0.01 μ F-5 μ F, and 0.33 μ F is selected in this enforcement for use, and withstand voltage is 600V;
Resonance receiving inductance L21, parameter area 0.01 μ H-20 μ H, 0.6 μ H is selected in this enforcement for use;
Turnable resonator receiving inductance L22, parameter area 0.01 μ H-20 μ H, 0.3 μ H is selected in this enforcement for use;
Application example 1
Resonance output winding resonant receiving coil is with the copper pipe coiling of diameter phi 10 in this example; Coil is square, and resonance output winding resonant receiving coil is a single-turn circular coil, and the coil length of side is 25cm; Coil-span is from being 20cm, and two coil planes are parallel and concentric.With 8 200W bulbs is load.In this example, voltage is 150V between power converting circuit output PQ, and when resonance output winding frequency was 270KHz, bulb was normally luminous, and through-put power reaches 1.6KW.
Application example 2
Resonance output winding resonant receiving coil is with the copper pipe coiling of diameter phi 10 in this example; Coil is a regular hexagon, and the resonance output winding is 2 single-turn circular coil parallel-connection structures, and the resonance receiving coil is 2 single-turn circular coil parallel-connection structures; The turn-to-turn distance is 0.3cm; The coil length of side is 18cm, and coil-span is from being 24cm, and two coil planes are parallel and concentric.With 12 200W bulbs is load.In this example, voltage is 150V between power converting circuit output PQ, and when resonance output winding frequency was 600KHz, bulb was normally luminous, and through-put power reaches 2.4KW.
Application example 3
Resonance output winding resonant receiving coil is with the copper pipe coiling of diameter phi 10 in this example; Coil is circular; Resonance output winding resonant receiving coil is shown in figure 16: the resonance output winding is 5 single-turn circular coil parallel-connection structures, and the resonance receiving coil is 1 single-turn circular coil.Resonance output winding diameter is 26cm, and turn-to-turn is apart from being 0.4cm, and resonance receiving coil diameter is 27cm, and coil-span is from being 30cm, and two coil planes are parallel and concentric.With 32 200W bulbs is load.In this example; Voltage is 190V between power converting circuit output PQ, and when resonance output winding frequency was 300KHz, bulb brightness was not enough; Behind frequency controller adjustment turnable resonator receiving inductance; Voltage is 190V between power converting circuit output PQ, and bulb is normally luminous, and wireless transmitted power is 6.4KW.
Application example 4
Resonance output winding resonant receiving coil is with the copper pipe coiling of diameter phi 10 in this example, and coil is circular, and the resonance output winding is 6 single-turn circular coil parallel-connection structures, and the resonance receiving coil is 1 single-turn circular coil.Resonance output winding diameter is 24.5cm, and turn-to-turn is apart from being 0.4cm, and resonance receiving coil diameter is 25.5cm, and coil-span is from being 29cm, and two coil planes are parallel and concentric.With 35 200W bulbs is load.In this example, voltage is 190V between power converting circuit output PQ, when resonance output winding frequency is 300KHz; Bulb brightness is not enough; Behind frequency controller adjustment turnable resonator output capacitance and turnable resonator outputting inductance, bulb is normally luminous, and the electric energy received power reaches 7KW.Increasing a resonance receiving coil two apart from resonance output winding 35cm place this moment again, after receive frequency control circuit adjustment turnable resonator receiving inductance and turnable resonator output capacitance, lights 6 bulbs.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.This area those skilled in the art are appreciated that under the situation of the spirit and scope of the present invention that do not deviate from the accompanying claims definition, can in form and details, make various modifications.
Claims (9)
1. moderate distance multikilowatt wireless electric energy transmission device; It comprises the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller; Wherein the sinusoidal wave power delivery device of multikilowatt receives electric energy from electrical network; To multikilowatt electric energy receiver wireless transmission electric energy, be to get in touch between sinusoidal wave power delivery device of multikilowatt and the multikilowatt electric energy receiver through mutual inductance; Multikilowatt electric energy receiver obtains electric energy through the magnetic field that the sinusoidal wave power delivery device of multikilowatt produces, and supplies follow-up load to use; Frequency controller can be gathered the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver; And sinusoidal wave power delivery device of multikilowatt or multikilowatt electric energy receiver are regulated according to regulating flow process; Thereby make the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver reach resonance state, make described moderate distance multikilowatt wireless electric energy transmission device reach optimum electric energy transmitting.
2. moderate distance multikilowatt wireless electric energy transmission device according to claim 1, wherein, the moderate distance scope is the distance between the 5cm to 50cm.
3. moderate distance multikilowatt wireless electric energy transmission device according to claim 2, wherein, the sinusoidal wave power delivery device of multikilowatt is made up of current source, resonant energy supplementary circuitry resonant energy output circuit; The resonant energy supplementary circuitry is made up of switch element one (SW1) and switch element two (SW2), by the frequency and the phase place of regulation electric energy is replenished to the resonant energy output circuit; The resonant energy output circuit is made up of resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance, and resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance constitute resonator system; This resonator system is used to set the sinusoidal wave power delivery device of multikilowatt frequency; And realize that energy exchanges with magnetic field and electric field form respectively in resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance; In the resonance output winding, produce the resonance current of assigned frequency, and resonance current in the resonance output winding is formed can be at the alternating magnetic field of electric energy transmitting scope inner conversion;
Multikilowatt electric energy receiver, it is used to receive the magnetic field energy of the alternating magnetic field of coming through the coupling of resonance output winding; Multikilowatt electric energy receiver receives electric capacity, resonance receiving coil, turnable resonator reception electric capacity and turnable resonator receiving inductance by resonance to be formed, and resonance reception electric capacity, resonance receiving coil, turnable resonator reception electric capacity, turnable resonator receiving inductance are used to set the frequency of multikilowatt electric energy receiver;
Frequency controller is used for adjusting the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver; Make the frequency of the sinusoidal wave power delivery device of multikilowatt identical, make multikilowatt electric energy receiver in the regulation space, receive optimum resonant energy with the frequency of multikilowatt electric energy receiver.
4. according to the described moderate distance multikilowatt of aforementioned arbitrary claim wireless electric energy transmission device; It is characterized in that; Sinusoidal wave power delivery device frequency of multikilowatt and multikilowatt electric energy receiver frequency range are at 50KHZ-1MHZ; The electric energy power bracket 0-30KW of moderate distance multikilowatt wireless electric energy transmission device transmission, space length 5-50cm between resonance output winding and resonance receiving coil.
5. according to the described moderate distance multikilowatt of aforementioned arbitrary claim wireless electric energy transmission device; It is characterized in that; Frequency controller is adjusted the sinusoidal wave power delivery device of multikilowatt frequency through regulating turnable resonator output capacitance or turnable resonator outputting inductance, makes the frequency of the sinusoidal wave power delivery device of multikilowatt and the Frequency Synchronization of multikilowatt electric energy receiver.
6. according to the described moderate distance multikilowatt of aforementioned arbitrary claim wireless electric energy transmission device, it is characterized in that frequency controller is confirmed the output frequency size through detecting resonance output winding voltage waveform.
7. according to the described moderate distance multikilowatt of aforementioned arbitrary claim wireless electric energy transmission device; It is characterized in that; Frequency controller is adjusted multikilowatt electric energy receiver frequency through regulating turnable resonator reception electric capacity or turnable resonator receiving inductance, makes the frequency of multikilowatt electric energy receiver and the Frequency Synchronization of the sinusoidal wave power delivery device of multikilowatt.
8. according to the described moderate distance multikilowatt of aforementioned arbitrary claim wireless electric energy transmission device, it is characterized in that frequency controller through detecting the voltage waveform in the load, confirms the size of receive frequency.
9. according to the described moderate distance multikilowatt of aforementioned arbitrary claim wireless electric energy transmission device; Wherein, Resonance output winding resonant receiving coil adopts copper pipe (or copper cash) coiling, is single turn or a plurality of single turn parallel-connection structure, and coil is of a size of 10cm～45cm in the resonance output winding resonant receiving coil; The turn-to-turn distance is 0.1-5cm, and resonance output winding resonant receiving coil is circular or square or polygon.
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| CN103346624B (en) * | 2013-07-31 | 2015-08-19 | 哈尔滨工业大学 | The multi-load wireless energy transform device that can automatically control |
| CN105932788A (en) * | 2016-03-04 | 2016-09-07 | 中惠创智无线供电技术有限公司 | Point-to-point wireless power supply coil coupling model and point-to-point wireless power supply system |
| CN106230126A (en) * | 2016-03-04 | 2016-12-14 | 中惠创智无线供电技术有限公司 | Point-to-point wireless power coil coupling model and point-to-point wireless power supply system |
| CN106230127A (en) * | 2016-03-04 | 2016-12-14 | 中惠创智无线供电技术有限公司 | Point-to-point wireless power coil coupling model and point-to-point wireless power supply system |
| WO2017148085A1 (en) * | 2016-03-04 | 2017-09-08 | 中惠创智无线供电技术有限公司 | Point-to-point wireless power transfer coil coupling model and point-to-point wireless power transfer system |
| WO2017148087A1 (en) * | 2016-03-04 | 2017-09-08 | 中惠创智无线供电技术有限公司 | Point-to-point wireless power transfer coil coupling model and point-to-point wireless power transfer system |
| WO2017148086A1 (en) * | 2016-03-04 | 2017-09-08 | 中惠创智无线供电技术有限公司 | Point-to-point wireless power transfer coil coupling model and point-to-point wireless power transfer system |
| CZ308445B6 (en) * | 2017-09-29 | 2020-08-26 | Západočeská Univerzita V Plzni | Device for contactless transmission of electrical energy to a rotating part |
| CN111799900A (en) * | 2020-07-06 | 2020-10-20 | 桂林电子科技大学 | Efficient remote wireless power transmission scheme |
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