CN107104517A - It is a kind of to realize the MCR WPT circuits and its control method of burning voltage output - Google Patents
It is a kind of to realize the MCR WPT circuits and its control method of burning voltage output Download PDFInfo
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- CN107104517A CN107104517A CN201710413819.4A CN201710413819A CN107104517A CN 107104517 A CN107104517 A CN 107104517A CN 201710413819 A CN201710413819 A CN 201710413819A CN 107104517 A CN107104517 A CN 107104517A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
Abstract
It is a kind of can realize burning voltage output MCR WPT circuits and its control method, including：Power supply lateral circuit, transmitting terminal circuit, resonance matching receiving terminal circuit, load side electrical circuitry, negative voltage feedback control circuit.Power supply lateral circuit connection transmitting terminal circuit, the resonant inductance of transmitting terminal circuit constitutes resonator between the resonant inductance of receiving terminal circuit is matched with resonance, resonance matching receiving terminal circuit connection load side electrical circuitry, resonance matching receiving terminal circuit, load side electrical circuitry connection negative voltage feedback control circuit.Present invention offer is a kind of to realize the MCR WPT circuits and its control method of burning voltage output, so that power output can keep stable in the case where transmission range changes, solve existing radio energy transmission technology output voltage with distance change fast-changing shortcoming.
Description
Technical field
The present invention is a kind of to realize the MCR-WPT circuits and its control method of burning voltage output, be related to radio energy biography
Transferring technology field.
Background technology
Wireless power transmission（Wireless Power Transfer, WPT）Technology is also known as non-contact type wireless electric energy
Transmission technology, what is be most widely used is to be based on magnetic-coupled wireless power transmission technology.Passed based on magnetic-coupled radio energy
Transferring technology is divided into again according to magnetic-coupled mode：Magnetic coupling induction type wireless power transmission technology（Magnetically-
Coupled Inductive Wireless Power Transfer, MCI-WPT）With the transmission of magnet coupled resonant type wireless electric energy
Technology（Magnetically-Coupled Resonant Wireless Power Transfer, MCR-WPT）, wherein MCI-
WPT technologies more ripe and efficiency of transmission is high, power is big；But deadly defect is that transmission range is short, in centimetre rank apart from interior
With higher efficiency of transmission.Since MCR-WPT technologies were found from 2007 with the Massachusetts Institute of Technology, just because of its transmission range
Advantage farther out and enjoy people's concern and the favor of research worker.Either MCI-WPT technologies or MCR-WPT technologies be all
In the presence of a shortcoming, efficiency of transmission can be fluctuated with the change of transmission range, and it is unstable thus to cause power output, because
This existing WPT technology is in occasion much higher to power stability requirement and does not apply to.
The content of the invention
Present invention offer is a kind of to realize the MCR-WPT circuits and its control method of burning voltage output so that output work
Rate can keep stable in the case where transmission range changes, and solve existing radio energy transmission technology output voltage with distance
Change and fast-changing shortcoming.
The technical scheme that the present invention takes is：
It is a kind of can realize burning voltage output MCR-WPT circuits, including：Power supply lateral circuit, transmitting terminal circuit, resonance matching connect
Receiving end circuit, load side electrical circuitry, negative voltage feedback control circuit；
Power supply lateral circuit connection transmitting terminal circuit, the resonant inductance of transmitting terminal circuit matches the resonance electricity of receiving terminal circuit with resonance
Resonator, resonance matching receiving terminal circuit connection load side electrical circuitry, resonance matching receiving terminal circuit, load-side electricity are constituted between sense
Road connection negative voltage feedback control circuit.
It is inverse that the power supply lateral circuit includes AC power AC, the first diode full bridge rectifier, filter capacitor C1, high frequency
Become circuit, excitation coil L1；AC power AC connection the first diode full bridge rectifiers, the first diode full bridge rectifier
Pass through filter capacitor C1 connection high-frequency inverter circuits, the bridge arm connection excitation coil L1 two ends of high-frequency inverter circuit.
The transmitting terminal circuit includes resonant inductance Lr1, resonant capacitance Cr1, resonant inductance Lr1 one end connection resonant capacitance
Cr1 one end, the resonant inductance Lr1 other ends connection resonant capacitance Cr1 other ends.
Resonance matching receiving terminal circuit includes resonant inductance Lr2, resonant capacitance Cr2, two IGBT and reverse therewith
Two diodes in parallel；IGBT pipes VT5 emitter stage connection diode VD5 anodes, diode VD5 negative electrodes connection IGBT pipes
VT5 colelctor electrode, IGBT pipes VT5 colelctor electrode connection IGBT pipes VT6 colelctor electrode, IGBT pipes VT5 emitter stage connection resonance
Electric capacity Cr2 one end, resonant capacitance Cr2 other ends connection IGBT pipes VT6 emitter stage, resonant inductance Lr2 is connected in parallel on resonant capacitance
Cr2 two ends.
The resonator be launch terminal circuit resonant inductance Lr1, resonance matching receiving terminal circuit resonant inductance Lr2 it
Between area of space.
The load side electrical circuitry includes loading coil L2, the second diode full bridge rectifier, filter capacitor C2, load R；
Loading coil L2 two ends connect the second diode full bridge rectifier bridge arm, and the second diode full bridge rectifier passes through filtering
Electric capacity C2 connections load R.
The negative voltage feedback control circuit includes two subtracters, two PID controllers and PWM signal generator；PWM
Signal generator one end connection IGBT pipes VT5 grid, IGBT pipes VT6 grid；PWM signal generator other end connection first
PID controller one end, the first PID controller other end connects first subtracter one end, first subtracter other end connection second
PID controller one end, the second PID controller other end connects second subtracter one end.
The excitation coil L1 and the resonant inductance Lr1 non-direct contacts in transmitting terminal circuit, resonance matching receiving terminal electricity
Resonant inductance Lr2 and loading coil the L2 also non-direct contact on road, realize that electric energy is passed by way of electromagnetism is direct inductively
Pass.
The resonant inductance Lr2 of resonant inductance Lr1 and resonance matching receiving terminal circuit in the transmitting terminal circuit are between
Every farther out.
The present invention is a kind of to realize the MCR-WPT circuits and its control method of burning voltage output, and advantage is：
（1）：When transmission range changes within the specific limits, the present invention can maintain the stabilization of output voltage all the time, solve existing
Have wireless electric energy transmission technology output voltage with distance change this fast-changing shortcoming.
（2）：The present invention substantially increases the actual application value of wireless power transmission technology, many to voltage accuracy requirement
Higher electrical equipment, demand obviously can not be met using existing wireless charging technology, but the present invention can be carried out surely to it
Fixed, safely wireless charging；
（3）：The present invention is very convenient in use.Existing wireless electric energy transmission device needs strictly in use
Control transmitting end-coil and the distance for receiving end-coil, therefore be all generally that receiving coil is fixed on a point；And the present invention exists
Using upper very flexibly convenient, it can arbitrarily change the relative position of two coils within the specific limits.
（4）：The present invention by changing receiving terminal resonant capacitance value, to change receiving terminal and transmitting terminal resonance matching degree,
So as to realize regulated output voltage.
Brief description of the drawings
Fig. 1 is main circuit and its electric operation control circuit figure of the invention.
Fig. 2 is control algolithm flow chart of the invention.
Embodiment
As shown in figure 1, it is a kind of can realize burning voltage output MCR-WPT circuits, including：Power supply lateral circuit, transmitting terminal
Circuit, resonance matching receiving terminal circuit, load side electrical circuitry, negative voltage feedback control circuit.
Power supply lateral circuit connection transmitting terminal circuit, the resonant inductance of transmitting terminal circuit matches the humorous of receiving terminal circuit with resonance
Shake and resonator is constituted between inductance, resonance matching receiving terminal circuit connection load side electrical circuitry, resonance matching receiving terminal circuit, load
Lateral circuit connection negative voltage feedback control circuit.
It is inverse that the power supply lateral circuit includes AC power AC, the first diode full bridge rectifier, filter capacitor C1, high frequency
Become circuit, excitation coil L1；AC power AC connection the first diode full bridge rectifiers, the first diode full bridge rectifier
Pass through filter capacitor C1 connection high-frequency inverter circuits, the bridge arm connection excitation coil L1 two ends of high-frequency inverter circuit.
The transmitting terminal circuit includes resonant inductance Lr1, resonant capacitance Cr1, resonant inductance Lr1 one end connection resonant capacitance
Cr1 one end, the resonant inductance Lr1 other ends connection resonant capacitance Cr1 other ends.
Resonance matching receiving terminal circuit includes resonant inductance Lr2, resonant capacitance Cr2, two IGBT and reverse therewith
Two diodes in parallel；IGBT pipes VT5 emitter stage connection diode VD5 anodes, diode VD5 negative electrodes connection IGBT pipes
VT5 colelctor electrode, IGBT pipes VT5 colelctor electrode connection IGBT pipes VT6 colelctor electrode, IGBT pipes VT5 emitter stage connection resonance
Electric capacity Cr2 one end, resonant capacitance Cr2 other ends connection IGBT pipes VT6 emitter stage, resonant inductance Lr2 is connected in parallel on resonant capacitance
Cr2 two ends.
The resonator be launch terminal circuit resonant inductance Lr1, resonance matching receiving terminal circuit resonant inductance Lr2 it
Between area of space.
The load side electrical circuitry includes loading coil L2, the second diode full bridge rectifier, filter capacitor C2, load R；
Loading coil L2 two ends connect the second diode full bridge rectifier bridge arm, and the second diode full bridge rectifier passes through filtering
Electric capacity C2 connections load R.
The negative voltage feedback control circuit includes two subtracters, two PID controllers and PWM signal generator；PWM
Signal generator one end connection IGBT pipes VT5 grid, IGBT pipes VT6 grid；PWM signal generator other end connection first
PID controller one end, the first PID controller other end connects first subtracter one end, first subtracter other end connection second
PID controller one end, the second PID controller other end connects second subtracter one end.The output voltage of the circuit is with transmission distance
During from change the control method of stabilization can be kept as shown in Figure 2.
Operation principle：
The principle of electric energy transmission：
1st, AC power AC is changed into stabilization after the first diode full bridge rectifier rectification and filter capacitor C1 filtering
DC voltage, DC voltage is changed into high-frequency ac voltage after high-frequency inverter circuit, and directly senses coupling by direct electromagnetism
The mode of conjunction, transmitting terminal is delivered to by electric energy from excitation coil, transmitting terminal with receiving terminal by way of EMR electromagnetic resonance is coupled, it is real
The longer-distance transmission of existing electric energy；Receiving terminal and load-side electromagnetism directly inductively by way of, realize electric energy from connecing
Receiving end, after the second diode full bridge rectifier rectification and filter capacitor C2 filtering, is changed into the transmission of loading coil
Galvanic current pressure is load supplying.Finally, when resonator distance changes, negative voltage feedback control circuit can pass through control
The size of resonant capacitance Cr2 values in resonance matching receiving terminal circuit, to stablize power output.
2nd, the first diode full bridge rectifier is made up of four diodes VD1, VD2, VD3 and VD4, and it inputs termination and handed over
Power supply is flowed, output end connects the output end of inverter circuit after electric capacity C1 filtering voltage regulations.
3rd, inverter circuit is made up of four IGBT switching tubes VT1, VT2, VT3 and VT4, and it exports termination excitation coil L1；
4th, the excitation coil L1 and the resonant inductance Lr1 non-direct contacts in transmitting terminal circuit, coupling is directly sensed by electromagnetism
The mode of conjunction realizes that electric energy is transmitted.Excitation coil will produce high-frequency alternating magnetic field in high-frequency alternating current pressure, be in the alternation together
Transmitting terminal resonant inductance Lr in magnetic field will produce high-frequency induction voltage by direct-coupled mode, realize electric energy from power supply
Transmission of the lateral circuit to transmitting terminal circuit.
5th, the resonant inductance Lr1 and resonance in the transmitting terminal circuit match the resonant inductance Lr2 distances of receiving terminal circuit
Interval is several times of coil diameter farther out, general up to 1 meter or so.This is also the outstanding advantages of MCR-WPT technologies, the two it
Between space be resonator.Condition of resonance is met between Lr, Cr and the frequency f three of high frequency voltage
When two the switching tubes VD5 and VD6 that resonance is matched in receiving circuit disconnect, all just the same transmitting of structure and parameter
Terminal circuit and resonance matching receiving terminal circuit will have same resonant frequency and occur EMR electromagnetic resonance coupling, and now electric energy will be realized
Middle distance high-efficient transmission from transmitting terminal to receiving terminal；
6th, the resonant inductance Lr2 in resonance matching receiving terminal circuit and loading coil L2 also non-direct contacts, straight also by electromagnetism
The mode connect inductively realizes that electric energy is transmitted.The same step of its principle（4）.
7th, the second diode full bridge rectifier is made up of four diodes VD7, VD8, VD9 and VD10, and it inputs termination
Loading coil, electric capacity C2 filtering voltage regulations are followed by load to output end after filtering.
8th, negative voltage feedback controls the principle of circuit：Output voltage sampled value U0 and output voltage desired value U0*Seek difference,
The reference value is that output current is adjusted after PID conciliations*, is*With loading coil current sampling data is ask after difference by
PWM signal generator, PWM signal generator output frequency and system resonance frequencies f identical pwm signals are inputted after PID regulations,
Control IGBT switching tubes VT5 and VT6 on off operating mode.
Realize the principle of burning voltage output：
Even if launch terminal circuit it is identical with receiving terminal circuit and in same resonant frequency when, MCR-WPT efficiency of transmission
Still can with the distance between two resonant inductors Lr1, Lr2, change within the specific limits and it is slowly varying, substantially
Rule is that, in optimum resonance range points or so, efficiency of transmission will all decline, and so may result in the fluctuation of output voltage.In order to
In the case that transmission range changes, realize that burning voltage is exported, this invention takes the method for " resonance matching ", general principle is
When making transmitting terminal and receiving terminal under complete resonant condition, system output voltage is more than rated output voltage, then according to defeated
Go out magnitude of voltage regulation switching tube VT5 and VT6 dutycycle to change the resonant capacitance Cr values of receiving terminal, thus change receiving terminal and
The resonance matching degree of transmitting terminal, reaches the purpose for changing output voltage.Comprise the following steps that：
Step 1：Rated output voltage is set as U0；
Step 2：Determine the coverage scope Dmin of voltage stabilizing output<D<Dmax, disconnects switching tube VT5 and VT6, makes reception first
The resonant capacitance Cr2 at end value is maximum, that is, keeps receiving terminal circuit to be in optimum resonant state, gradually increases by two resonant inductances
The distance between coil Lr1, Lr2, are gradually reduced output voltage U, untill when power output can not meet loading demand,
Record transmission range as Dmax now；The distance between two resonant inductors Lr1, Lr2 are gradually reduced again, until
Untill when power output can not meet loading demand, transmission range as Dmin now is recorded；
Step 3：When the distance between two resonant inductors Lr1, Lr2 are arbitrary value D, judge whether D belongs to Dmin extremely
In the range of Dmax；
Step 4：If Dmin<D<Dmax, then when switching tube VT5 and VT6 are in off state, output voltage U>U0.In order to
Voltage stabilization is kept, switching tube VT5 and VT6 dutycycle should be incrementally increased, reduce the resonant capacitance Cr2 of receiving terminal, so that
Reduce the resonance matching degree of receiving terminal and transmitting terminal so that output voltage drops to U0；
Step 5：If D<Dmin or D>Dmax, illustrates under distance herein, even if switching tube VT5 and VT6 are in turning off shape
When state, i.e. receiving terminal and transmitting terminal are in optimum resonance matching status, rated output voltage U0 can not be also met, i.e., has U all the time<
U0, should now disconnect switching tube VT5 and VT6, that is, keep receiving terminal circuit to be in optimum resonant state, so that output voltage U
Maximize.
Claims (10)
1. a kind of can realize the MCR-WPT circuits of burning voltage output, it is characterised in that including：Power supply lateral circuit, transmitting terminal electricity
Road, resonance matching receiving terminal circuit, load side electrical circuitry, negative voltage feedback control circuit；Power supply lateral circuit connection transmitting terminal circuit,
The resonant inductance of transmitting terminal circuit constitutes resonator between the resonant inductance of receiving terminal circuit is matched with resonance, and resonance matching is received
Terminal circuit connects load side electrical circuitry, resonance matching receiving terminal circuit, load side electrical circuitry connection negative voltage feedback control circuit.
2. a kind of according to claim 1 can realize the MCR-WPT circuits of burning voltage output, it is characterised in that：The electricity
Source circuit includes AC power AC, the first diode full bridge rectifier, filter capacitor C1, high-frequency inverter circuit, excitation line
Enclose L1；AC power AC connection the first diode full bridge rectifiers, the first diode full bridge rectifier passes through filter capacitor
C1 connection high-frequency inverter circuits, the bridge arm connection excitation coil L1 two ends of high-frequency inverter circuit.
3. a kind of according to claim 1 can realize the MCR-WPT circuits of burning voltage output, it is characterised in that：The hair
Penetrating terminal circuit includes resonant inductance Lr1, resonant capacitance Cr1, resonant inductance Lr1 one end connection resonant capacitance Cr1 one end, resonance electricity
Feel the Lr1 other ends connection resonant capacitance Cr1 other ends.
4. a kind of according to claim 1 can realize the MCR-WPT circuits of burning voltage output, it is characterised in that：It is described humorous
The matching receiving terminal circuit that shakes includes resonant inductance Lr2, resonant capacitance Cr2, two IGBT and two two poles of reverse parallel connection therewith
Pipe；IGBT pipes VT5 emitter stage connection diode VD5 anodes, diode VD5 negative electrodes connection IGBT pipes VT5 colelctor electrode, IGBT
Pipe VT5 colelctor electrode connection IGBT pipes VT6 colelctor electrode, IGBT pipes VT5 emitter stage connection resonant capacitance Cr2 one end, resonance
Electric capacity Cr2 other ends connection IGBT pipes VT6 emitter stage, resonant inductance Lr2 is connected in parallel on resonant capacitance Cr2 two ends.
5. a kind of according to claim 1 can realize the MCR-WPT circuits of burning voltage output, it is characterised in that：It is described humorous
The chamber that shakes is the area of space between resonant inductance Lr1, the resonant inductance Lr2 of resonance matching receiving terminal circuit for launching terminal circuit.
6. a kind of according to claim 1 can realize the MCR-WPT circuits of burning voltage output, it is characterised in that：It is described negative
Carrying lateral circuit includes loading coil L2, the second diode full bridge rectifier, filter capacitor C2, load R；The two of loading coil L2
The second diode full bridge rectifier bridge arm of end connection, the second diode full bridge rectifier is loaded by filter capacitor C2 connections
R。
7. a kind of according to claim 1 can realize the MCR-WPT circuits of burning voltage output, it is characterised in that：The electricity
Negative feedback control circuit is pressed to include two subtracters, two PID controllers and PWM signal generator；PWM signal generator one end
Connect IGBT pipes VT5 grid, IGBT pipes VT6 grid；The PWM signal generator other end connects first PID controller one end,
The first PID controller other end connects first subtracter one end, and the first subtracter other end connects second PID controller one end,
The second PID controller other end connects second subtracter one end.
8. a kind of according to claim 1 can realize the MCR-WPT circuits of burning voltage output, it is characterised in that：It is described to swash
Coil L1 and the resonant inductance Lr1 non-direct contacts in transmitting terminal circuit are encouraged, resonance matches the resonant inductance Lr2 of receiving terminal circuit
With loading coil L2 also non-direct contact, realize that electric energy is transmitted by way of electromagnetism is direct inductively.
9. a kind of according to claim 1 can realize the MCR-WPT circuits of burning voltage output, it is characterised in that：The hair
The resonant inductance Lr2 distances interval for resonant inductance Lr1 and resonance the matching receiving terminal circuit penetrated in terminal circuit is farther out.
10. a kind of can realize the control method of burning voltage output, it is characterised in that comprise the following steps：
Step 1：Rated output voltage is set as U0；
Step 2：Determine the coverage scope Dmin of voltage stabilizing output<D<Dmax, disconnects switching tube VT5 and VT6, makes reception first
The resonant capacitance Cr2 at end value is maximum, that is, keeps receiving terminal circuit to be in optimum resonant state, gradually increases by two resonant inductances
The distance between coil Lr1, Lr2, are gradually reduced output voltage U, untill when power output can not meet loading demand,
Record transmission range as Dmax now；The distance between two resonant inductors Lr1, Lr2 are gradually reduced again, until
Untill when power output can not meet loading demand, transmission range as Dmin now is recorded；
Step 3：When the distance between two resonant inductors Lr1, Lr2 are arbitrary value D, judge whether D belongs to Dmin extremely
In the range of Dmax；
Step 4：If Dmin<D<Dmax, then when switching tube VT5 and VT6 are in off state, output voltage U>U0；
In order to keep voltage stabilization, switching tube VT5 and VT6 dutycycle should be incrementally increased, subtracts the resonant capacitance Cr2 of receiving terminal
It is small, so as to reduce the resonance matching degree of receiving terminal and transmitting terminal so that output voltage drops to U0；
Step 5：If D<Dmin or D>Dmax, illustrates under distance herein, even if switching tube VT5 and VT6 are in turning off shape
When state, i.e. receiving terminal and transmitting terminal are in optimum resonance matching status, rated output voltage U0 can not be also met, i.e., has U all the time<
U0, should now disconnect switching tube VT5 and VT6, that is, keep receiving terminal circuit to be in optimum resonant state, so that output voltage U
Maximize.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710413819.4A CN107104517A (en) | 2017-06-05 | 2017-06-05 | It is a kind of to realize the MCR WPT circuits and its control method of burning voltage output |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710413819.4A CN107104517A (en) | 2017-06-05 | 2017-06-05 | It is a kind of to realize the MCR WPT circuits and its control method of burning voltage output |
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| CN107104517A true CN107104517A (en) | 2017-08-29 |
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| CN201710413819.4A Pending CN107104517A (en) | 2017-06-05 | 2017-06-05 | It is a kind of to realize the MCR WPT circuits and its control method of burning voltage output |
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Cited By (3)
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| CN108900011A (en) * | 2018-06-22 | 2018-11-27 | 西安电子科技大学 | Magnetic coupling wireless power supply with secondary voltage feedback |
| CN112260415A (en) * | 2020-10-12 | 2021-01-22 | 泉州装备制造研究所 | Wireless power transmission system and control method |
| CN113098149A (en) * | 2021-04-29 | 2021-07-09 | 南方电网数字电网研究院有限公司 | Power self-adaptive induction power taking equipment |
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