CN108649804A - Commutator transformer system based on magnetic coupling wireless power transmission - Google Patents
Commutator transformer system based on magnetic coupling wireless power transmission Download PDFInfo
- Publication number
- CN108649804A CN108649804A CN201810589925.2A CN201810589925A CN108649804A CN 108649804 A CN108649804 A CN 108649804A CN 201810589925 A CN201810589925 A CN 201810589925A CN 108649804 A CN108649804 A CN 108649804A
- Authority
- CN
- China
- Prior art keywords
- frequency
- power transmission
- wireless power
- voltage
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- 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
The present invention provides a kind of commutator transformer systems based on magnetic coupling wireless power transmission, including：DC AC inverter modules, for input direct-current to be changed into primary side high-frequency ac；Wireless power transmission module, including primary side resonance modules and secondary side resonance modules, primary side resonance modules receive the high-frequency ac, and the electromagnetic field for converting thereof into close coupling is sent to secondary side resonance modules；High-frequency ac when being converted into secondary again after the secondary electromagnetic energy described in resonance modules reception；Rectification filtering module, for secondary side high-frequency ac rectification to be converted into direct current and filters out high fdrequency component, and the DC voltage of final output.The circuit structure of the voltage transformer system of the present invention is simple, reliable, practical, and realizes efficient, wireless power transmission that transimission power is controllable between transformer both sides.
Description
Technical field
The present invention relates to wireless power transmission and power electronics fields, especially a kind of to be based on magnetic coupling radio
The commutator transformer system that can be transmitted.
Background technology
Two type of commutator transformer that DC converter is divided into the DC converter that output can be adjusted and output is not adjusted
The transmission of power and the promotion of voltage may be implemented in type, commutator transformer, the extensive use in HVDC transmission system, and
New energy field, such as photovoltaic, fuel cell, super capacitor occasion also have many applications, while DC-DC transformer technology
It can also be used to carry out DC voltage sampling and DC energy transmission and impedance inverter circuit.
DC-DC transformer generally uses power electronics scheme to solve, and is adopted wherein completing the general of isolation transformation task
With the high frequency transformer based on electromagnetic induction principle, i.e., exchanged using first DC inversion, exchange is become by high frequency transformer
It changes and completes transformation when electrical isolation task, finally rectification obtains direct current, i.e., common DC/AC/DC schemes again.Direct current-at present
Commutator transformer is mainly used for HVDC transmission system and new energy field, such as photovoltaic, fuel cell, super capacitor occasion
It is widely used.
Strong magnetic coupling wireless power transmission converter technique is an extremely promising new and high technology, there is extremely wide application
Foreground is different from normal for can equally obtain DC-DC transformer using strong magnetic coupling wireless power transmission conversion scheme
Advise isolation method of the power electronics scheme by the transformer of electromagnetic induction principle, the high-frequency resonant that it is enclosed by former and deputy sideline
Coupling principle carries out energy transmission, and physical isolation of the primary and secondary side coil without magnetic core scheme may be implemented and realize simultaneously wireless
Electric energy transmits, and design can be made more flexible in commercial Application.But consider strong magnetic coupling wireless power transmission to secondary side namely
The load variation of energy acceptance side or energy power flow changing are very sensitive, therefore need the working frequency transmitted to this radio-circuit
And output power is adjusted, to realize efficient, wireless power transmission that transimission power is controllable between transformer both sides.
Invention content
In view of the above-mentioned problems, the present invention is intended to provide a kind of direct current based on strong magnetic-coupled wireless power transmission transformation becomes
Depressor system substitutes high frequency transformer with strong magnetic coupling wireless power transmission conversion section, skill is converted by wireless power transmission
Art realizes the energy transmission of DC-DC transformer, and passes through the working frequency and output power to wireless power transmission
Control to adjust realizing efficient, wireless power transmission that transimission power is controllable between transformer both sides.
The purpose of the present invention is realized using following technical scheme：
A kind of commutator transformer system based on magnetic coupling wireless power transmission is provided, including：
DC-AC inverter modules, for input direct-current to be changed into primary side high-frequency ac；
Wireless power transmission module, including primary side resonance modules and secondary side resonance modules, primary side resonance modules receive institute
The electromagnetic field stated high-frequency ac, and convert thereof into close coupling is sent to secondary side resonance modules；Pair side resonance modules receive
It is converted into secondary side high-frequency ac again after the electromagnetic energy；
Rectification filtering module, for secondary side high-frequency ac rectification to be converted into direct current and filters out high fdrequency component；
The positive and negative terminal of direct current input is connect with the input terminal of DC-AC inverter modules；The output end and nothing of DC-AC inverter modules
The input terminal of line electric energy transmission module connects；The output end of wireless power transmission module and the input terminal of rectification filtering module connect
It connects；Rectification filtering module obtains the DC voltage of final output.
Preferably, the DC-AC inverter modules are single-phase full bridge inverter circuit, include that there are two bridge arms in parallel, each
There are two full-control type transistors for series connection on bridge arm.
Preferably, the wireless power transmission module includes：Inductance is LyPrimary coil, capacitance Cy, inductance LfPair
Sideline circle, capacitance Cf；The primary coil and capacitance CyIt is connect with the output of DC-AC inverter modules after series connection, forms radio energy
The primary side of transmission module, i.e. input terminal；The secondary coil and capacitance CfParallel connection forms the secondary side of wireless power transmission module,
That is output end.
Preferably, the rectification filtering module includes full bridge rectifier and LC filter circuits, the full-bridge rectification electricity
The input terminal on road is connect with the output end of wireless power transmission module, after the output end connection LC filter circuits of full bridge rectifier
Output.
Preferably, the commutator transformer system further includes：Sampling monitoring unit, zero passage detection unit, drive module with
And control module, the sampling monitoring unit is for sampling and monitoring DC-AC inverter modules input terminal and output end and rectification
The voltage of the output end of filtering and the electric current flowed through；The zero passage detection unit is used to obtain the voltage monitored, electric current exists
At the time of one harmonic period is through zero crossing；The control module is used for working frequency and direct current to DC-AC inverter modules
The output power of transformer is controlled；The drive module is controlled by control module, drives the switch in DC-AC inverter modules
Pipe is switched on or off.
Preferably, the control module includes for judging whether wireless power transmission module is in the state of resonant condition
Judging unit and for adjusting the working frequency of DC-AC inverter modules in detuning transmission it is adapted with resonant frequency
Frequency amending unit, the detailed process that the working frequency of DC-AC inverter modules is adjusted in the control module is：
(1) condition adjudgement：Sampling monitoring unit carries out sampling prison to the input terminal voltage and electric current of DC-AC inverter modules
Survey, and by sampling monitoring result be sent into condition adjudgement unit in, sampling monitoring to input terminal voltage, electric current passed through multiplier
And zero comparator, if the product of voltage, electric current is more than 0, wireless power transmission module is in resonant condition, at this time DC-
The working frequency of AC inverter modules adapts to the resonant frequency of wireless power transmission module；Otherwise, condition adjudgement unit judges are wireless
Electric energy transmission module is in detuning state, enters step (2)；
(2) adjustment function is established：Zero passage detection unit calculates the input terminal voltage and electric current of DC-AC inverter modules
Zero-acrross ing moment, and frequency adjustment function is established according to the moment, the frequency adjustment function is：
In formula, UtVoltage Feedback regulated value；fkFor the switching frequency of switching device in DC-AC inverter modules；tiFor DC-AC
At the time of the input voltage zero passage of inverter module；tjFor DC-AC inverter modules input current zero passage at the time of；UsetIt is known
Voltage fiducial value, represent with the resonant frequency of wireless power transmission module be adapted setting voltage；γ is frequency variance
Regulatory factor；fzFor the resonant frequency of wireless power transmission module.
(3) according to the frequency adjustment function, the switching frequency of switching device in DC-AC inverter modules is adjusted,
So that switching frequency is returned to frequency corresponding with the resonant frequency of wireless power transmission module；Wherein, specifically to derailing switch
The adjustment process of the switching frequency of part is：
1) the resonant frequency σ neighborhoods that acquisition is located at wireless power transmission module are：[fz- σ, fz+σ]；The endpoint frequency in the field
Rate corresponds to the same Voltage Feedback regulated value on frequency adjustment function, is denoted as reference voltage regulated value Uck；
2) working frequency that setting ith samples the DC-AC inverter modules acquired is fki；And it is obtained according to the secondary sampling
The voltage for the DC-AC inverter circuit input terminals got, current over-zero moment calculate ith and adjust corresponding Voltage Feedback tune
Section value Uti；According to the Voltage Feedback regulated value U calculatedtiWith reference voltage regulated value UckCompare, is sampled according to (i-1)-th time
The working frequency f of the DC-AC inverter circuits acquiredk(i-1)The work of the DC-AC inverter circuits acquired with ith sampling
Working frequency fkiThe relative size and Voltage Feedback regulated value U comparedtiWith reference voltage regulated value UckRelative size, it is different
Comparison result take different strategies to go to update existing working frequency fkiSo that existing working frequency fkiTowards resonance
Frequency fzIt is close；Updated working frequency is triggered into driving circuit by processing, carries out the frequency tune of DC-AC inverter modules
It is whole.
3) when the ith being calculated adjusts corresponding Voltage Feedback regulated value UtiEqual to voltage fiducial value UsetWhen, then it adjusts
Section process terminates, and the switching frequency for realizing switching device in DC-AC inverter modules is returned to and wireless power transmission module
The corresponding frequency of resonant frequency；Otherwise, continue step 2).
Beneficial effects of the present invention are：Magnetic coupling wireless power transmission converter technique realizes DC-DC transformer；It can be into
Row wireless power transmission keeps application scenario more flexible, and the circuit structure is simple, reliable, practical.DC-DC of the present invention becomes
Depressor becomes in HVDC transmission system, new energy application in DC energy wireless transmission and wireless solution DC impedance
Changing the application fields such as circuit and certain special experiments can extensive use；And the circuit model of the voltage transformer system is divided
Analysis, and propose a kind of straight with the direct current-controlled to adjust to the working frequency and output power of wireless power transmission
Convertor transformer system realizes efficient, wireless power transmission that transimission power is controllable between transformer both sides.
Description of the drawings
Using attached drawing, the invention will be further described, but the embodiment in attached drawing does not constitute any limit to the present invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is the circuit connection diagram of DC Transformer circuit in a preferred embodiment of the present invention；
Fig. 2 is the circuit topology connection figure of DC-AC inverter modules in a preferred embodiment of the present invention.
Reference numeral：
DC-AC inverter modules 1；Wireless power transmission module 2；Rectification filtering module 3；
Specific implementation mode
In conjunction with following application scenarios, the invention will be further described.Described embodiment is that a part of the invention is implemented
Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained under the premise of labour, shall fall within the protection scope of the present invention.
Referring to Fig. 1, in the present embodiment, a kind of commutator transformer system based on magnetic coupling wireless power transmission is provided,
Including：
DC-AC inverter modules 1, for input direct-current to be changed into primary side high-frequency ac；
Wireless power transmission module 2, including primary side resonance modules and secondary side resonance modules, primary side resonance modules receive institute
The electromagnetic field stated high-frequency ac, and convert thereof into close coupling is sent to secondary side resonance modules；Pair side resonance modules receive
It is converted into secondary side high-frequency ac again after the electromagnetic energy；
Rectification filtering module 3, for secondary side high-frequency ac rectification to be converted into direct current and filters out high fdrequency component；
The positive and negative terminal of direct current input is connect with the input terminal of DC-AC inverter modules；The output end and nothing of DC-AC inverter modules
The input terminal of line electric energy transmission module connects；The output end of wireless power transmission module and the input terminal of rectification filtering module connect
It connects；Rectification filtering module obtains the DC voltage of final output.
In the present embodiment, the DC-AC inverter modules are single-phase full bridge inverter circuit, include there are two bridge arm in parallel,
There are two full-control type transistors for series connection on each bridge arm.
In the present embodiment, the wireless power transmission module includes：Inductance is LyPrimary coil, capacitance Cy, inductance Lf
Secondary coil, capacitance Cf；The primary coil and capacitance CyIt is connect with the output of DC-AC inverter modules after series connection, composition is wireless
The primary side of electric energy transmission module, i.e. input terminal；The secondary coil and capacitance CfParallel connection forms the pair of wireless power transmission module
Side, i.e. output end.
In the present embodiment, the rectification filtering module includes full bridge rectifier and LC filter circuits, and the full-bridge is whole
The input terminal of current circuit is connect with the output end of wireless power transmission module, and the output end of full bridge rectifier connects LC filtered electricals
It is exported behind road.
In the present embodiment, the commutator transformer system further includes：Sampling monitoring unit, zero passage detection unit, driving mould
Block and control module, the sampling monitoring unit for sample and monitor DC-AC inverter modules input terminal and output end and
The voltage of the output end of rectifying and wave-filtering and the electric current flowed through；The zero passage detection unit is for obtaining the voltage monitored, electricity
Stream is at the time of a harmonic period is through zero crossing；The control module be used for the working frequencies of DC-AC inverter modules and
The output power of commutator transformer is controlled；The drive module is controlled by control module, is driven in DC-AC inverter modules
Switching tube is switched on or off.
In the present embodiment, the control module includes for judging whether wireless power transmission module is in resonant condition
Condition adjudgement unit and in detuning transmission adjust DC-AC inverter modules working frequency make itself and resonant frequency phase
The frequency amending unit of adaptation, the detailed process that the working frequency of DC-AC inverter modules is adjusted in the control module are：
(1) condition adjudgement：Sampling monitoring unit carries out sampling prison to the input terminal voltage and electric current of DC-AC inverter modules
Survey, and by sampling monitoring result be sent into condition adjudgement unit in, sampling monitoring to input terminal voltage, electric current passed through multiplier
And zero comparator, if the product of voltage, electric current is more than 0, wireless power transmission module is in resonant condition, at this time DC-
The working frequency of AC inverter modules adapts to the resonant frequency of wireless power transmission module；Otherwise, condition adjudgement unit judges are wireless
Electric energy transmission module is in detuning state, enters step (2)；
(2) adjustment function is established：Zero passage detection unit calculates the input terminal voltage and electric current of DC-AC inverter modules
Zero-acrross ing moment, and frequency adjustment function is established according to the moment, the frequency adjustment function is：
In formula, UtVoltage Feedback regulated value；fkFor the switching frequency of switching device in DC-AC inverter modules；tiFor DC-AC
At the time of the input voltage zero passage of inverter module；tjFor DC-AC inverter modules input current zero passage at the time of；UsetIt is known
Voltage fiducial value, represent with the resonant frequency of wireless power transmission module be adapted setting voltage；γ is frequency variance
Regulatory factor；fzFor the resonant frequency of wireless power transmission module.
(3) according to the frequency adjustment function, the switching frequency of switching device in DC-AC inverter modules is adjusted,
So that switching frequency is returned to frequency corresponding with the resonant frequency of wireless power transmission module；Wherein, specifically to derailing switch
The adjustment process of the switching frequency of part is：
1) the resonant frequency σ neighborhoods that acquisition is located at wireless power transmission module are：[fz- σ, fz+σ]；The endpoint frequency in the field
Rate corresponds to the same Voltage Feedback regulated value on frequency adjustment function, is denoted as reference voltage regulated value Uck；
2) working frequency that setting ith samples the DC-AC inverter modules acquired is fki；And it is obtained according to the secondary sampling
The voltage for the DC-AC inverter circuit input terminals got, current over-zero moment calculate ith and adjust corresponding Voltage Feedback tune
Section value Uti；According to the Voltage Feedback regulated value U calculatedtiWith reference voltage regulated value UckCompare, is sampled according to (i-1)-th time
The working frequency f of the DC-AC inverter circuits acquiredk(i-1)The work of the DC-AC inverter circuits acquired with ith sampling
Working frequency fkiThe relative size and Voltage Feedback regulated value U comparedtiWith reference voltage regulated value UckRelative size, it is different
Comparison result take different strategies to go to update existing working frequency fkiSo that existing working frequency fkiTowards resonance
Frequency fzIt is close；Updated working frequency is triggered into driving circuit by processing, carries out the frequency tune of DC-AC inverter modules
It is whole.
3) when the ith being calculated adjusts corresponding Voltage Feedback regulated value UtiEqual to voltage fiducial value UsetWhen, then it adjusts
Section process terminates, and the switching frequency for realizing switching device in DC-AC inverter modules is returned to and wireless power transmission module
The corresponding frequency of resonant frequency；Otherwise, continue step 2).
In this preferred embodiment, judge wireless power transmission module whether sentence by the state in resonant condition by setting up
Disconnected unit and make what it was adapted with resonant frequency for adjusting the working frequency of DC-AC inverter modules in detuning transmission
Frequency amending unit can timely find frequency detuning and quickly adjust；And have also been devised frequency adjustment function and
Corresponding adjusting algorithm so that the fast response time that frequency is adjusted ensure that the electric energy efficiency of transmission of wireless power transmission module.
In the present embodiment, it is contemplated that when carrying out wireless power transmission, due to magnetic coupling in the wireless power transmission module
There are energy losses in conjunction, and in the prior art by detect transformer secondary voltage, electric current by output power calculating
And feedback control is carried out there are time delay according to result of calculation, it causes to control inclined lag；Therefore based on law of conservation of energy and equivalent
Circuit theory, all parts of transformer secondary are equivalent to transformer primary side；By to secondary side whole circuit equivalent to transformation
The calculating of the equivalent resistance of the primary side of device, you can determine the power that transformer primary side is transmitted to secondary side, and transformer is reflected with this
Output power of the system to outside.
In the present embodiment, the control module further includes：Equivalence value for calculating reflection output power, and according to this
The equivalence value of output power carry out switching tube in feedback regulation DC-AC inverter modules in one cycle open and turn off when
Between ratio, and then adjust DC-AC inverter module output powers output power adjustment module.
In the present embodiment, the calculating to output power equivalence value is obtained after by secondary side whole circuit equivalent to primary side
To equiva lent impedance on the basis of calculate, the equiva lent impedance is：ZK；In this way, then from transformer primary side to transformer
The power of secondary side transmission i.e. the equivalence value calculation formula of output power are：
Pdo=Iyf 2×Re(ZK)
In formula, PdoFor the equivalence value of output power；The IyfTo flow through the electricity in primary coil in Sampling time periods
The virtual value of stream；ZKTo obtain equiva lent impedance after transformer secondary whole circuit equivalent to primary side.
In this preferred embodiment, it is based on equivalent circuit theory, equiva lent impedance institute wasted work rate can be real at primary side by calculating
Now to the estimation of transformer overall output power, a kind of new thinking is provided for the feedback regulation of transformer output power.
In the present embodiment, the output power adjustment module includes equiva lent impedance computing unit and power adjustment unit；
The equiva lent impedance computing unit is based on modeling of energy conservation, by the output end voltage and electricity that detect DC-AC inverter modules
Stream, you can calculate the value of equiva lent impedance in the corresponding sampling period；It is described calculate equiva lent impedance detailed process be：
(1) the fixed sampling period is set, to the output end voltage and electric current of DC-AC inverter modules within the sampling period
Value is sampled；
(2) voltage and electric current acquired above-mentioned detection is sent into zero passage detection unit, obtains DC-AC inverter modules
Output end voltage through at the time of zero crossing be tm；T at the time of obtaining the current over-zero of output endn；According to DC-AC inverter modules
The angular frequency of voltage and current calculates offset phase angleCalculation formula isW is the electricity of output end
The angular frequency of pressure, electric current.
(3) according to the internal resistance in the primary coil of each electrical quantity of above-mentioned acquisition and transformer, its secondary side is calculated to original
The equiva lent impedance on side：
In formula, ZKIt is secondary side to the equiva lent impedance of primary side；VoFor DC-AC inverter modules within a sampling period output end
Voltage virtual value；IoFor the virtual value of DC-AC inverter modules electric current of output end within a sampling period；θ is offset
Phase angle；IxFor the virtual value for the electric current that primary coil flows through within a sampling period；rlFor the internal resistance of primary coil；Iomax
For the maximum value of DC-AC inverter modules electric current of output end within a sampling period；IxminIt is sampled at one for primary coil
The maximum value of the electric current flowed through in period；CyFor the resonant capacitance of primary side；LyFor the inductance of primary coil；CfFor the resonance on secondary side
Capacitance；LfFor the inductance of secondary coil.
In this preferred embodiment, it is based on law of conservation of energy, devises equivalent resistance of the secondary side whole circuit relative to primary side
Anti- calculation formula, the equiva lent impedance obtained using the calculation formula go to calculate equivalent power, meet estimation transformer output
The required precision of power, and the calculation formula is simple, calculation amount is small, and equivalent resistance can be quickly sought out within the sampling period
It is anti-, it ensure that the response speed of next power regulation.
In the present embodiment, the anode of the input terminal of the DC-AC inverter modules is connected with controlled tr tube S1 and S3；It is described
The cathode of the input terminal of DC-AC inverter modules is connected with controlled tr tube S2 and S4；The S1 and S2 forms a bridge arm, described
S3 and S4 forms another bridge arm；The ratio of service time and turn-off time in a switch periods of the controlled tr tube
The trigger signal of circuit control driven, the controlled tr tube S1 and S4 is identical, simultaneously turns on or simultaneously turns off；The control is opened
The trigger signal for closing pipe S2 and S3 is identical, simultaneously turns on or simultaneously turns off；The controlled tr tube S1 and controlled tr tube S2's
Trigger signal is complementary.
In the present embodiment, the power adjustment unit adjust service time in a switch periods of controlled tr tube with
The ratio of turn-off time, and then realize and control is adjusted to output power, specific process is：
(1) sampling monitoring unit sets the sampling period, is carried out to the current value for flowing through primary coil a sampling period
Sampling；And according to the above-mentioned equiva lent impedance being calculated, calculate secondary side it is equivalent to after primary side equivalent power Pdo；
(2) a value and power reference P is setrck；When detecting equivalent power PdoLess than value and power reference Prck, and flow through
The current over-zero point moment of DC-AC inverter module output ends is identical as the zero passage point moment of resonance current for flowing through primary coil
When, detect the sense of current of next sampling instant primary coil, if positive (being flowed to secondary side), then send out conducting S1 and
S4 turns off the control signal of S2 and S3 to driving circuit, and then realizes opening and turning off for control switching tube；If it is reversed (to
The output ends of DC-AC inverter modules flows), then shutdown S1 and S4 is sent out, the control signal of S2 and S3 is connected to driving circuit, into
And realize control switching tube.
When detect equivalent power be more than value and power reference Prck, and flow through the current over-zero of DC-AC inverter module output ends
When point moment is identical as the zero passage point moment of resonance current for flowing through primary coil, the electricity of next sampling instant primary coil is detected
The direction of stream then sends out conducting S1 if positive (being flowed to secondary side), turns off the control signal of S2, S3 and S4 to driving circuit,
And then realize control switching tube；If reversed (being flowed to DC-AC inverter module output ends), then shutdown S1, S2 and S3 are sent out, is led
The control signal of logical S4 realizes control switching tube to driving circuit.
(3) in switching tube switch periods, sampling monitoring unit can carry out multiple repairing weld, and sampling number is more, you can real
When more precise control controlled tr tube service time and turn-off time, and then output power is corrected, until be calculated
Output power tracking value and power reference Prck。
In this preferred embodiment, power adjustment unit is established, by inverse according to the secondary side equivalent power of reflection and DC-AC
Become voltage, curent change that module and coil midstream are crossed, is controlled in DC-AC inverter circuits to select different control strategies
Full-control type HF switch pipe switch so as to the tracking real-time high-efficiency of power.
In the present embodiment, a kind of magnetic coupling wireless power transmission converter technique realization DC-DC transformer is provided；Energy
Wireless power transmission is carried out, keeps application scenario more flexible, the circuit structure is simple, reliable, practical.DC-DC of the present invention
Transformer is in HVDC transmission system, new energy application, in DC energy wireless transmission and wireless solution DC impedance
The application fields such as translation circuit and certain special experiments can extensive use；And the circuit model of the voltage transformer system is carried out
Analysis, and propose a kind of with the direct current-controlled to adjust to the working frequency and output power of wireless power transmission
Commutator transformer system realizes efficient, wireless power transmission that transimission power is controllable between transformer both sides.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art answer
Work as analysis, technical scheme of the present invention can be modified or replaced equivalently, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (6)
1. a kind of commutator transformer system based on magnetic coupling wireless power transmission, which is characterized in that including：
DC-AC inverter modules, for input direct-current to be changed into primary side high-frequency ac；
Wireless power transmission module, including primary side resonance modules and secondary side resonance modules, primary side resonance modules receive the height
Frequency exchanges, and the electromagnetic field for converting thereof into close coupling is sent to secondary side resonance modules；Described in pair side resonance modules receive
Electromagnetic energy after again be converted into secondary side high-frequency ac；
Rectification filtering module, for secondary side high-frequency ac rectification to be converted into direct current and filters out high fdrequency component；
The positive and negative terminal of direct current input is connect with the input terminal of DC-AC inverter modules；The output end and radio of DC-AC inverter modules
The input terminal connection of energy transmission module；The output end of wireless power transmission module and the input terminal of rectification filtering module connect；It is whole
Stream filter module obtains the DC voltage of final output.
2. a kind of commutator transformer system based on magnetic coupling wireless power transmission according to claim 1, feature exist
It is single-phase full bridge inverter circuit in, DC-AC inverter modules, includes being in series on each bridge arm there are two bridge arm in parallel
Two full-control type transistors.
3. a kind of commutator transformer system based on magnetic coupling wireless power transmission according to claim 1, feature exist
In the wireless power transmission module includes：Inductance is LyPrimary coil, capacitance Cy, inductance LfSecondary coil, capacitance
Cf；The primary coil and capacitance CyIt is connect with the output of DC-AC inverter modules after series connection, composition wireless power transmission module
Primary side, i.e. input terminal；The secondary coil and capacitance CfParallel connection forms the secondary side of wireless power transmission module, i.e. output end.
4. a kind of commutator transformer system based on magnetic coupling wireless power transmission according to claim 1, feature exist
In, the rectification filtering module include full bridge rectifier and LC filter circuits, the input terminal of the full bridge rectifier with
The output end of wireless power transmission module connects, and is exported after the output end connection LC filter circuits of full bridge rectifier.
5. a kind of commutator transformer system based on magnetic coupling wireless power transmission according to claim 1, feature exist
In the commutator transformer system further includes：Sampling monitoring unit, zero passage detection unit, drive module and control module, institute
State output end of the sampling monitoring unit for sampling and monitoring DC-AC inverter modules input terminal and output end and rectifying and wave-filtering
Voltage and the electric current that flows through；The zero passage detection unit is for obtaining the voltage monitored, electric current in a harmonic period
At the time of through zero crossing；The control module is used for the working frequency of DC-AC inverter modules and the output of commutator transformer
Power is controlled；The drive module is controlled by control module, and the switching tube in DC-AC inverter modules is driven to open or close
It is disconnected.
6. a kind of commutator transformer system based on magnetic coupling wireless power transmission according to claim 5, feature exist
In, the control module include for judge wireless power transmission module whether condition adjudgement unit in resonant condition and
It is single that working frequency for adjusting DC-AC inverter modules in detuning transmission so that it is corrected with the frequency that resonant frequency is adapted
Member, the detailed process that the working frequency of DC-AC inverter modules is adjusted in the control module are：
(1) condition adjudgement：Sampling monitoring unit carries out sampling monitoring to the input terminal voltage and electric current of DC-AC inverter modules,
And sampling monitoring result is sent into condition adjudgement unit, input terminal voltage that sampling monitoring arrives, electric current by by multiplier with
And zero comparator, if the product of voltage, electric current is more than 0, wireless power transmission module is in resonant condition, at this time DC-AC
The working frequency of inverter module adapts to the resonant frequency of wireless power transmission module；Otherwise, condition adjudgement unit judges radio
Energy transmission module is in detuning state, enters step (2)；
(2) adjustment function is established：Zero passage detection unit calculates the input terminal voltage of DC-AC inverter modules and the zero passage of electric current
Moment, and frequency adjustment function is established according to the moment, the frequency adjustment function is：
In formula, UtVoltage Feedback regulated value；fkFor the switching frequency of switching device in DC-AC inverter modules；tiFor DC-AC inversions
At the time of the input voltage zero passage of module；tjFor DC-AC inverter modules input current zero passage at the time of；UsetFor known electricity
Fiducial value is pressed, the setting voltage being adapted with the resonant frequency of wireless power transmission module is represented；γ is adjusted for frequency variance
The factor；fzFor the resonant frequency of wireless power transmission module；
(3) according to the frequency adjustment function, the switching frequency of switching device in DC-AC inverter modules is adjusted so that
Switching frequency is returned to frequency corresponding with the resonant frequency of wireless power transmission module；Wherein, specifically to switching device
The adjustment process of switching frequency is：
1) the resonant frequency σ neighborhoods that acquisition is located at wireless power transmission module are：[fz- σ, fz+σ]；The endpoint frequency pair in the field
It should be denoted as reference voltage regulated value U in the same Voltage Feedback regulated value on frequency adjustment functionck；
2) working frequency that setting ith samples the DC-AC inverter modules acquired is fki；And it is got according to the secondary sampling
The voltage of DC-AC inverter circuit input terminals, the current over-zero moment, calculate ith and adjust corresponding Voltage Feedback regulated value
Uti；According to the Voltage Feedback regulated value U calculatedtiWith reference voltage regulated value UckCompare, is obtained according to (i-1)-th sampling
The working frequency f of obtained DC-AC inverter circuitsk(i-1)The work frequency of the DC-AC inverter circuits acquired with ith sampling
Rate fkiThe relative size and Voltage Feedback regulated value U comparedtiWith reference voltage regulated value UckRelative size, different ratios
Relatively result takes different strategies to go to update existing working frequency fkiSo that existing working frequency fkiTowards resonant frequency fz
It is close；Updated working frequency is triggered into driving circuit by processing, carries out the frequency adjustment of DC-AC inverter modules；
3) when the ith being calculated adjusts corresponding Voltage Feedback regulated value UtiEqual to voltage fiducial value UsetWhen, then it adjusted
Journey terminates, and the switching frequency for realizing switching device in DC-AC inverter modules is returned to resonance with wireless power transmission module
The corresponding frequency of frequency；Otherwise, continue step 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589925.2A CN108649804B (en) | 2018-06-08 | 2018-06-08 | Direct current transformer system based on magnetic coupling wireless power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589925.2A CN108649804B (en) | 2018-06-08 | 2018-06-08 | Direct current transformer system based on magnetic coupling wireless power transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108649804A true CN108649804A (en) | 2018-10-12 |
| CN108649804B CN108649804B (en) | 2020-05-22 |
Family
ID=63752134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810589925.2A Active CN108649804B (en) | 2018-06-08 | 2018-06-08 | Direct current transformer system based on magnetic coupling wireless power transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108649804B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138204A (en) * | 2019-06-17 | 2019-08-16 | 田建龙 | A kind of converter system and its application |
| CN112217294A (en) * | 2020-08-19 | 2021-01-12 | 浙江大学 | Non-communication constant current control method applied to bidirectional wireless power transmission circuit |
| CN112653253A (en) * | 2020-12-17 | 2021-04-13 | 中国航空工业集团公司北京长城航空测控技术研究所 | Energy transmission structure and energy transmission method of hollow non-contact transformer |
| CN113405446A (en) * | 2021-05-11 | 2021-09-17 | 联合汽车电子有限公司 | Method and device for detecting gap of magnetic core of transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751793A (en) * | 2012-07-06 | 2012-10-24 | 重庆大学 | Wireless power transfer system based on bilateral power flow control and control method thereof |
| CN104734517A (en) * | 2015-03-03 | 2015-06-24 | 华东交通大学 | Direct current transformer circuit based on magnetic coupling wireless power transmission |
| CN104935090A (en) * | 2015-07-15 | 2015-09-23 | 中南大学 | Electric energy and signal synchronous transmission method based on frequency splitting in electric energy wireless transmission |
| CN105141046A (en) * | 2015-10-26 | 2015-12-09 | 重庆大学 | SP type ICPT system load and mutual inductance identification method |
-
2018
- 2018-06-08 CN CN201810589925.2A patent/CN108649804B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751793A (en) * | 2012-07-06 | 2012-10-24 | 重庆大学 | Wireless power transfer system based on bilateral power flow control and control method thereof |
| CN104734517A (en) * | 2015-03-03 | 2015-06-24 | 华东交通大学 | Direct current transformer circuit based on magnetic coupling wireless power transmission |
| CN104935090A (en) * | 2015-07-15 | 2015-09-23 | 中南大学 | Electric energy and signal synchronous transmission method based on frequency splitting in electric energy wireless transmission |
| CN105141046A (en) * | 2015-10-26 | 2015-12-09 | 重庆大学 | SP type ICPT system load and mutual inductance identification method |
Non-Patent Citations (1)
| Title |
|---|
| 陈月: "大功率串并式磁共振无线电能传输系统研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138204A (en) * | 2019-06-17 | 2019-08-16 | 田建龙 | A kind of converter system and its application |
| CN112217294A (en) * | 2020-08-19 | 2021-01-12 | 浙江大学 | Non-communication constant current control method applied to bidirectional wireless power transmission circuit |
| CN112217294B (en) * | 2020-08-19 | 2022-05-13 | 浙江大学 | Non-communication constant current control method applied to bidirectional wireless power transmission circuit |
| CN112653253A (en) * | 2020-12-17 | 2021-04-13 | 中国航空工业集团公司北京长城航空测控技术研究所 | Energy transmission structure and energy transmission method of hollow non-contact transformer |
| CN113405446A (en) * | 2021-05-11 | 2021-09-17 | 联合汽车电子有限公司 | Method and device for detecting gap of magnetic core of transformer |
| CN113405446B (en) * | 2021-05-11 | 2023-08-08 | 联合汽车电子有限公司 | Method and device for detecting gap of magnetic core of transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108649804B (en) | 2020-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108649804A (en) | Commutator transformer system based on magnetic coupling wireless power transmission | |
| CN110350673A (en) | A kind of impedance matching network optimization method of radio energy transmission system under maximal efficiency tracking | |
| CN109245536A (en) | A kind of circuit topological structure suitable for the transmission of two-way near field electric energy | |
| CN109302070A (en) | Power converter circuit topological structure and its control method | |
| CN103580301B (en) | A kind of wireless power transmission power control system and method | |
| CN109245542A (en) | A kind of symmetrical power converter circuit topological structure and its control method | |
| CN107069999B (en) | The parameter setting method of the radio energy transmission system constant current output of bilateral LC network | |
| CN108736727A (en) | Power supply changeover device and its control method | |
| CN208955902U (en) | A kind of circuit topological structure suitable for the transmission of two-way near field electric energy | |
| CN110365205A (en) | A kind of high efficiency totem non-bridge PFC Rectifier | |
| CN111106676A (en) | Magnetic coupling mechanism parameter multi-objective optimization method of LCC-S type MC-WPT system | |
| CN110293859B (en) | On-line charging and replenishing device and method for inspection unmanned aerial vehicle | |
| CN108964474A (en) | A kind of three mode rectification topologies based on LLC resonant converter | |
| CN109120072A (en) | S/SP type wireless charging system constant pressure and efficiency optimization control method | |
| CN104079076A (en) | Non-contact power supply system using frequency conversion soft switching driving technology and driving method thereof | |
| CN109687735A (en) | A kind of isolated DC power supply of high precision wide range | |
| WO2023193650A1 (en) | Method for identifying both loads and mutual inductance of multi-load wireless power transfer system | |
| CN111478458A (en) | Wireless power transmission system and constant-current and constant-voltage control method thereof | |
| CN108959780A (en) | The big signal simulation model of Monophase electric power electronic transformer | |
| CN205490225U (en) | Two -way ACDC circuit of high -frequency chopper isolated form | |
| CN108023411A (en) | A kind of single-phase contactless power supply system with power factor emendation function | |
| CN102371416B (en) | Single-switch energy-saving inverter welding machine | |
| CN108880316A (en) | The grid-connection converter Predictive Control System and control method of compensation with voltage | |
| CN108879711A (en) | A kind of single-phase reactive power continuous regulating mechanism of low pressure and method | |
| CN106655738B (en) | A kind of the quasi-single-stage inverter and its control method of no electrolytic capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200415 Address after: 063100 Liu Zhuang Village East Village, Tangshan City, Guye District, Hebei Applicant after: TANGSHAN XIANLONG NAC Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Guangdong streets Nanshan Road 2022 Kangle building B1002 Applicant before: SHENZHEN ZHIDA MACHINERY TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |