CN106505901A - A kind of linear resonance combined type hyperfrequency inverter - Google Patents
A kind of linear resonance combined type hyperfrequency inverter Download PDFInfo
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- CN106505901A CN106505901A CN201610914662.9A CN201610914662A CN106505901A CN 106505901 A CN106505901 A CN 106505901A CN 201610914662 A CN201610914662 A CN 201610914662A CN 106505901 A CN106505901 A CN 106505901A
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The present invention discloses a kind of linear resonance combined type hyperfrequency inverter, belongs to radio communication (energy transmission) and power conversion technology field.The structure includes linear amplifier, resonance inverter and its resonance drive circuit, linear amplifier and resonance inverter are connected to load after outfan parallel connection, composition main power circuit, input of the output voltage of main power circuit as resonance drive circuit, the driving after the phase shift decay of resonance drive circuit as resonance inverter power switch pipe.Linear amplifier and switch class A amplifier A have been carried out parallel connection by the present invention, so which has had concurrently, the linear amplification linearity is good, and output waveform quality is good and the advantage of switching amplifier efficiency high.
Description
Technical field
The present invention relates to a kind of linear-resonance combined type hyperfrequency inverter, belongs to radio communication (energy transmission) and work(
Rate converter technique field.
Background technology
With the application of developing rapidly for electronic technology, radio communication and wireless energy transmission technology more and more extensive.Mesh
Front microwave wireless electric energy transmitting system architecture diagram is as shown in Figure 1.Wherein solid state power generators module realizes direct current work(
Conversion of the rate to radio-frequency power, directly determines the energy size and radiation signal quality of active antenna radiation.Common at present
Solid state power generators are divided into linear amplifier and switch class A amplifier A.Linear amplifier mainly includes Class A, Class B
With Class AB etc..Its advantage includes：Bandwidth is higher, and the linearity is good, and output signal quality is higher etc., however its efficiency generally compared with
Low.By taking Class AB amplifiers as an example, its efficiency is 78.5% to the maximum.The remarkable advantage of switch class A amplifier A is that efficiency is higher,
100% can be reached in theory.Switch class A amplifier A mainly includes E classes, DE classes, F classes etc..Wherein E class A amplifier As structure and control
System is simple, and application is relatively broad, and its circuit topology is as shown in Figure 2.E class A amplifier A advantages mainly include：Power switch pipe is exported
Electric capacity can be absorbed by external capacitive, while can achieve Sofe Switch；Type of drive is mode altogether, drives reliable.But E classes are amplified
Device switch tube voltage stress is larger, generally reaches 4--6 times of input voltage, in the larger occasion of power grade (as radio energy is passed
Defeated), device for power switching is required harsh.And output linearity degree is low, waveform quality is poor.Improved based on E class A amplifier As and obtained
Class Φ2Resonance inverter is commonly used to hyperfrequency DC-DC conversion, and which is in parallel by LC series connection at switching tube two ends
The second harmonic trap of road composition, while input choke induction is replaced with resonant inductance.ClassΦ2The electricity of resonance inverter
Road topology is as shown in Figure 3.Its major advantage is as follows：1) switch tube voltage stress relatively low (about 2--3 times of input voltage)；2) real
Sofe Switch is showed, has been lost low；But output waveform quality is equally poor.
Content of the invention
Defect and deficiency of the present invention for solid state power generators, are to ensure its preferable output waveform quality and higher
Conversion efficiency, propose a kind of linear-resonance combined type hyperfrequency inverter, the inverter is by linear amplifier and high-frequency resonant
Inverter is constituted outfan is in parallel, the characteristics of so as to be integrated with the good linear amplifier linearity and high resonance inverter efficiency,
A kind of Class Φ suitable for the parallel-connection structure are proposed simultaneously2The resonance drive circuit of resonance inverter, realizes linear amplifier
In parallel with the high efficiency of resonance inverter.
The present invention is adopted the following technical scheme that for solving its technical problem：
A kind of linear-resonance combined type hyperfrequency inverter, including linear amplifier, resonance inverter and its resonant drive
Circuit, linear amplifier and resonance inverter are connected to load after outfan parallel connection, constitute main power circuit, main power circuit
Output voltage as resonance drive circuit input, through resonance drive circuit phase shift decay after as resonance inverter work(
The driving of rate switching tube Q；
The linear amplifier includes the first output power transistors T1With the second output power transistors T2, bias constant current
Source Ibias, the first biasing diode D1With the second biasing diode D2, buffer stage resistance R3, buffer stage transistor T3, the first partial pressure
Sampling resistor R1With the second partial pressure sampling resistor R2, and voltage regulator and voltage amplifier stage；Wherein, the first output is brilliant
Body pipe T1As upper pipe, the second output power transistors T2As down tube, the first output power transistors T1Colelctor electrode and input electricity
Potential source VccConnection, the first output power transistors T1Emitter stage and the second output power transistors T2Emitter stage connection, second
Output power transistors T2Emitter stage and load resistance RLOne end connection, the second output power transistors T2Colelctor electrode with
Input voltage source VeeConnection, load resistance RLThe other end ground connection；Offset constant current source IbiasOutfan and the first biasing diode D1
Anode connection, first biasing diode D1Anode and the first output power transistors T1Base stage connection, first biasing two poles
Pipe D1Negative electrode and second biasing diode D2Anode connection, second biasing diode D2Negative electrode be connected to the second output work
Rate transistor T2Base stage, the second output power transistors T2Base stage and buffer stage transistor T3Emitter stage be connected；First point
Piezoresistance R1With the second divider resistance R2Load resistance R is connected in parallel on after series connectionLTwo ends, wherein the second divider resistance R2One end is grounded,
The other end is connected to the reverse input end of voltage regulator, and the outfan of voltage regulator is connected with the input of voltage amplifier stage
Connect, the outfan of voltage amplifier stage and buffer stage transistor T3Base stage connection, buffer stage resistance R3It is brilliant that one end is connected to buffer stage
Body pipe T3Base stage, the other end is connected to buffer stage transistor T3Emitter stage；
The resonance inverter includes being input into resonant inductance LF, second harmonic trap inductance L2F, second harmonic trap electric capacity
C2F, power switch pipe parallel connection outside resonant capacitance CF, outputting inductance LS, output capacitance CSWith resonance inverter power switch tube Q；
Wherein, second harmonic trap inductance L2FWith second harmonic trap electric capacity C2FAfter series connection with resonance inverter power switch pipe Q simultaneously
Connection；Input resonant inductance LFOne end and input voltage source VinPositive pole connects, the leakage of the other end and resonance inverter power switch pipe Q
Pole connects；Power switch pipe parallel connection outside resonant capacitance CFIn parallel with resonance inverter power switch pipe Q；Outputting inductance LSWith defeated
Go out electric capacity CSAfter series connection, one end is connected to the drain electrode of resonance inverter power switch pipe Q, the other end and output loading RLIt is connected；
The resonance drive circuit includes input stage resistance Rdi, input stage inductance Ldi, output stage inductance Ldo, output stage electricity
Resistance RdoWith intermediate capacitance Cd, input parasitic capacitance C of resonance inverter power switch pipe Qiss, wherein input stage resistance RdiOne end
With load resistance RLUngrounded end be connected, the other end and input stage inductance LdiOne end be connected, input stage inductance LdiAnother
End and intermediate capacitance CdUpper end connect, intermediate capacitance CdLower end ground connection；Output stage inductance LdoOne end is connected to intermediate capacitance Cd
Upper end, the other end and output stage resistance RdoConnection, output stage resistance RdoThe other end and resonance inverter power switch tube
Grid is connected, input parasitic capacitance C of resonance inverter power switch pipeissIt is connected in parallel on the grid of resonance inverter power switch pipe Q
Between pole and source electrode.
Beneficial effects of the present invention are as follows：
Linear amplifier and switch class A amplifier A have been carried out parallel connection so that its to have had the linear amplification linearity concurrently good,
Output waveform quality is good and the advantage of switching amplifier efficiency high.Meanwhile, switch class A amplifier A employs Class Φ2Resonance is inverse
Become device, compared with traditional E class A amplifier As, effectively reduce the voltage stress of switching tube.Resonance drive circuit is employed, is realized humorous
The inverter that shakes output exports homophase with linear amplifier, it is ensured that its high efficiency is in parallel.
Description of the drawings
Fig. 1 is microwave wireless electric energy transmitting system architecture diagram.
Fig. 2 is Class E amplifier circuit configuration figures.
Fig. 3 is Class Φ2Resonant inverter circuit structure chart.
Fig. 4 is linear-resonance combined type hyperfrequency inverter topology circuit structure diagram.
Fig. 5 is voltage control Class AB linear amplifier circuit structure charts.
Fig. 6 is Class Φ2Resonance inverter power switch pipe two ends equivalent impedance circuit diagram.
Fig. 7 is different output capacitances CSLaod network transmission function amplitude-frequency characteristic figure under value.
Fig. 8 is Class Φ2Resonance inverter switching tube two ends impedance Bode diagram.
Fig. 9 is resonance drive circuit structure chart.
Figure 10 is resonance drive circuit transmission function Bode diagram.
Figure 11 is resonance drive circuit input impedance Bode diagram.
Figure 12 (a) is Class Φ2Resonance inverter power switch pipe both end voltage vdsSimulation waveform；Figure 12 (b) is
ClassΦ2Resonance inverter power switch tube current idSimulation waveform.
Figure 13 (a) is Class Φ2Resonance inverter output current ireSimulation waveform；Figure 13 (b) flows through load resistance
Electric current ioSimulation waveform；Figure 13 (c) is linear amplifier output current ilinSimulation waveform.
Figure 14 (a) is Class Φ2Resonance inverter power switch tube drives voltage vgsSimulation waveform；Figure 14 (b) is
ClassΦ2Resonance inverter power switch pipe drain-source voltage vdsSimulation waveform.
Specific embodiment
The invention is described in further details below with reference to accompanying drawing.
Linear-resonance combined type hyperfrequency the inverter of the present invention, including linear amplifier, resonance inverter and its resonance
Drive circuit, linear amplifier and resonance inverter are connected to load after outfan parallel connection, constitute main power circuit, main power
Input of the output voltage of circuit as resonance drive circuit, as resonance inversion after the phase shift decay of resonance drive circuit
The driving of device power switch pipe Q.The drive circuit is exported as input using linear amplifier, is realized continuously adjustable phase shift and is declined
Drive as resonance inverter after subtracting, realize that resonance inverter output and linear amplifier export same phase.Meanwhile, resonant drive
The input impedance of circuit is designed as resistive (induction reactance angle or capacitive reactance angle very little) and its input impedance is compared to load impedance (50 Ω)
It is approximately open circuit.
Voltage-controlled Class AB amplifier of the linear amplifier using high linearity, its linearity are good, can absorb
The higher harmonic current of resonance inverter output, so that improve output waveform quality；Resonance inverter is using efficient
ClassΦ2Resonance inverter, and whole power are provided, including output and resonance driving power, improve whole efficiency.
Simultaneously, it is proposed that the resonance drive circuit of resonance inverter, it is achieved that the output of resonance inverter and the output of linear amplifier
Same phase, it is ensured that its high efficiency is in parallel.
The topological mode of operation is as described below：Linear amplifier work first, now output is by linear amplifier
There is provided, after linear amplifier output reaches stable state, the now input of resonance inverter drive circuit reaches stable state, in resonance inversion
After device drive signal reaches stable state, resonance inverter enters working condition, as resonance inverter reaches stable state, its output
Increase, the output of linear amplifier reduces, final bearing power and driving power by there is resonance inverter to provide, now
Reach peak efficiency.Whole machine maintains to work in this case.
Fig. 4 gives the circuit topology of linearly-resonance combined type hyperfrequency inverter, and topology is by linear amplifier and efficiently
The high-frequency resonant inverter of rate is in outfan composition in parallel.
Linear amplifier adopts voltage-controlled Class AB amplifiers；High-frequency resonant inverter adopts Class Φ2Resonance
Inverter.It is simultaneous for the topology and proposes a kind of resonance drive circuit, realizes that resonance inverter output is same with linear amplifier
Phase output, it is ensured that its high efficiency is in parallel.
A. voltage-controlled Class AB amplifier principles analysis
The circuit topology of voltage-controlled Class AB amplifiers is as shown in Figure 5.First output power transistors T1With
Two output power transistors T2Constitute the power output stage of linear amplifier；Offset constant current source IbiasConjunction is provided for linear amplifier
Suitable current offset；First biasing diode D1With the second biasing diode D2For eliminating the first output power transistors T1With
Second output power transistors T2Intermodulation distortion；R1And R2It is output voltage voPartial pressure sampling resistor, adopted signal with
Output voltage reference signal vrefCompare, its error signal sends into voltage regulator；As output stage is emitter follower shape
Formula, can only amplify electric current, it is impossible to amplify voltage, therefore introduce a voltage amplifier stage between voltage regulator and output stage.Real
In the circuit of border, voltage amplifier stage is realized by homophase operational amplification circuit；Buffer stage transistor T3With buffer stage resistance R3Constitute buffering
Level, is characterized in that input impedance is big, and output impedance is little, is increased with obtaining enough voltage with output stage for isolation voltage amplifier stage
Benefit.
B.ClassΦ2Resonance inverter analysis design
According to Class Φ as shown in Figure 32The circuit topology of resonance inverter can obtain resonance inverter power switch
The equiva lent impedance circuit at pipe two ends is as shown in Figure 6.ClassΦ2Resonance inverter is improved on the basis of E class A amplifier As
Obtain.By second harmonic trap inductance L2F, second harmonic trap electric capacity C2FThe series resonant tank of composition its resonant frequency sets
At twice operating frequency, second harmonic trap is constituted, filter the secondary of resonance inverter power switch pipe Q drain-source voltages
Harmonic component, so as to the voltage shaping to be become the shape of similar trapezoidal wave, reduces the electricity of resonance inverter power switch pipe Q
Compressive stress.Input resonant inductance L is cooperateed with simultaneouslyF, power switch pipe parallel connection outside resonant capacitance CFThe resonant network of composition helps work(
Rate switching tube achieves ZVS (Sofe Switch：Zero-Voltage-Switching), switching loss is reduced, improves efficiency.Negative
Carry impedance RLWith outputting inductance LS, output capacitance CSComposition laod network, wherein LSAnd CSEquiva lent impedance X after series connectionSTable
Show.Laod network adjusts output has certain inhibitory action simultaneously to higher hamonic wave.
ClassΦ2The output of resonance inverter comprises only the fundametal compoment and very small amount of operating frequency (due to output filtering
Effect) higher harmonic components, therefore consider fundametal compoment energy transmission.For fundametal compoment, in given output
(Po), input voltage (Vin) in the case of partial pressure impedance XSValue：
Identical X is obtained at operating frequencySDifferent LSAnd CSCombination have countless.For different output capacitances CSTake
The amplitude-frequency characteristic of the lower laod network transmission function of value is as shown in Figure 7.Output capacitance CSLess its to harmonic wave filter effect stronger,
Output waveform quality is better.While the electric capacity bears, voltage peak is higher, and working condition becomes unreliable, therefore during actual selection
Consideration should be traded off.
The impedance expression of resonant network：
Wherein：L2FFor second harmonic trap inductance；C2FFor second harmonic trap electric capacity；LFFor being input into resonant inductance；CF' be
Equivalent parallel switching tube two ends resonant capacitance (including switching tube parasitic capacitance and power switch pipe parallel connection outside resonant capacitance
CF)；ω is work angular frequency；
From the foregoing, the impedance should meet following condition：
1) in fundamental wave (operating frequency fs=100MHz) and triple-frequency harmonics at obtain maximum；
2) minimum is obtained at second harmonic；
As described above, wherein L2F, C2FSecond harmonic trap is designed as, its resonant frequency is twice operating frequency, i.e., full
Foot：
The impedance Z of resonant networkFMaximum denominator be equal to 0 at, solve two positive root ω1(2πf1) and ω3(2
πf3), make f1=fs, f1=3fs.So as to each element value as follows can be solved：
C is chosen generally according to experienceF' capacitance, it is notable that its value should be greater than power switch pipe spur performance
Electric capacity.Meanwhile, the impedance Z of its hourglass source electrode when power switch pipe is turned offDSFor the parallel connection of resonance and filtering impedance, need after parallel connection
To being input into resonant inductance LF, power switch pipe parallel connection outside resonant capacitance CFCorrection is finely adjusted, Z after correctionDSAmplitude-frequency characteristic
As shown in Figure 8 with phase-frequency characteristic.
C. resonance drive circuit analysis design
Due to the topology be survey in high-frequency ac in parallel, therefore it is required that the output of resonance inverter and linear amplifier is defeated
Go out homophase.For solving the above problems, the present invention proposes Class Φ2The resonance drive circuit of resonance inverter, its circuit topology
As shown in Figure 9.Drive circuit drive as resonance inverter after certain phase shift and decay using main power output voltage
Dynamic signal.So as to ensure which exports the output homophase with linear amplifier.Simultaneously as the drive circuit is in parallel with load,
Therefore it is required that its input impedance is larger, and should be approximately resistive.Now, the input current of drive circuit and resonance inverter
Output current homophase, driving power are also provided by resonance inverter, so as to reduce linear amplifier processing power as far as possible, it is ensured that
Overall greater efficiency.The Bode diagram of the transmission function of the resonance drive circuit is as shown in Figure 10；Input impedance Bode diagram is as schemed
Shown in 11.
One specific design example of the present invention is as follows：ClassΦ2Resonance inverter input terminal voltage Vin=48V；Load
50 Ω of impedance；Switching frequency fs=100MHz；Resonance inverter power switch pipe is LDMOS, and in topology, inductance used is sky
Core inductance, electric capacity are patch capacitor.The numerical value of components and parts such as table 1.The each components and parts of Class AB linear amplifiers are ideal
Device.
1 Class Φ of table2Inverter component parameters value
| LF | 16nH | L2F | 9.6nH | LS | 330nH |
| CF | 70pF | C2F | 65pF | CS | 10pF |
| Rdi | 90Ω | Ldo | 135nH | Cd | 15pF |
| Ldi | 13nH | Rdo | 50Ω | — | — |
Figure 12 (a), Figure 12 (b), Figure 13 (a), Figure 13 (b), Figure 13 (c), Figure 14 (a), Figure 14 (b) sets forth mainly
Simulation waveform.Figure 12 (a) gives Class Φ2Resonance inverter power switch pipe both end voltage vdsSimulation waveform；Figure 12
B () gives Class Φ2Resonance inverter power switch tube current idSimulation waveform, it is achieved that Sofe Switch.Figure 13 (a) is given
Class Φ2Resonance inverter output current ireSimulation waveform, Figure 13 (b) give the electric current i for flowing through load resistanceoEmulation
Oscillogram, Figure 13 (c) give linear amplifier output current ilinSimulation waveform.Linear amplifier output current fundamental wave point
Amount very little, comprises only third-harmonic component substantially, and bearing power and driving power are all by Class Φ2Resonance inverter is provided.
Figure 14 (a) gives Class Φ2Resonance inverter power switch tube drives voltage vgsSimulation waveform, Figure 14 (b) give
ClassΦ2Resonance inverter power switch pipe drain-source voltage vdsSimulation waveform.Voltage stress about 105V, is input voltage
(48V) 2.2 times.
Above example technological thought only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, every
According to technological thought proposed by the present invention, any change that is done on the basis of technical scheme, the scope of the present invention is each fallen within
Within.
Claims (5)
1. a kind of linear-resonance combined type hyperfrequency inverter, including linear amplifier, resonance inverter and its resonant drive electricity
Road, linear amplifier and resonance inverter are connected to load after outfan parallel connection, constitute main power circuit, main power circuit
Input of the output voltage as resonance drive circuit, as resonance inverter power after the phase shift decay of resonance drive circuit
The driving of switching tube Q；
The linear amplifier includes the first output power transistors T1With the second output power transistors T2, offset constant current source
Ibias, the first biasing diode D1With the second biasing diode D2, buffer stage resistance R3, buffer stage transistor T3, the first partial pressure adopts
Sample resistance R1With the second partial pressure sampling resistor R2, and voltage regulator and voltage amplifier stage；Wherein, the first output crystal
Pipe T1As upper pipe, the second output power transistors T2As down tube, the first output power transistors T1Colelctor electrode and input voltage
Source VccConnection, the first output power transistors T1Emitter stage and the second output power transistors T2Emitter stage connection, second is defeated
Go out power transistor T2Emitter stage and load resistance RLOne end connection, the second output power transistors T2Colelctor electrode with defeated
Enter voltage source VeeConnection, load resistance RLThe other end ground connection；Offset constant current source IbiasOutfan and the first biasing diode D1's
Anode connects, the first biasing diode D1Anode and the first output power transistors T1Base stage connection, first biasing diode
D1Negative electrode and second biasing diode D2Anode connection, second biasing diode D2Negative electrode be connected to the second output
Transistor T2Base stage, the second output power transistors T2Base stage and buffer stage transistor T3Emitter stage be connected；First partial pressure
Resistance R1With the second divider resistance R2Load resistance R is connected in parallel on after series connectionLTwo ends, wherein the second divider resistance R2One end is grounded, separately
One end is connected to the reverse input end of voltage regulator, and the outfan of voltage regulator is connected with the input of voltage amplifier stage,
The outfan of voltage amplifier stage and buffer stage transistor T3Base stage connection, buffer stage resistance R3One end is connected to buffer stage crystal
Pipe T3Base stage, the other end is connected to buffer stage transistor T3Emitter stage；
The resonance inverter includes being input into resonant inductance LF, second harmonic trap inductance L2F, second harmonic trap electric capacity C2F, work(
Rate switching tube parallel connection outside resonant capacitance CF, outputting inductance LS, output capacitance CSWith resonance inverter power switch tube Q；Wherein,
Second harmonic trap inductance L2FWith second harmonic trap electric capacity C2FIn parallel with resonance inverter power switch pipe Q after series connection；Input
Resonant inductance LFOne end and input voltage source VinPositive pole connects, and the other end is connected with the drain electrode of resonance inverter power switch pipe Q；
Power switch pipe parallel connection outside resonant capacitance CFIn parallel with resonance inverter power switch pipe Q；Outputting inductance LSWith output capacitance CS
After series connection, one end is connected to the drain electrode of resonance inverter power switch pipe Q, the other end and output loading RLIt is connected；
Characterized in that, the resonance drive circuit includes input stage resistance Rdi, input stage inductance Ldi, output stage inductance Ldo, defeated
Go out a grade resistance RdoWith intermediate capacitance Cd, input parasitic capacitance C of resonance inverter power switch pipe Qiss, wherein input stage resistance
RdiOne end and load resistance RLUngrounded end be connected, the other end and input stage inductance LdiOne end be connected, input stage inductance Ldi
The other end and intermediate capacitance CdUpper end connect, intermediate capacitance CdLower end ground connection；Output stage inductance LdoDuring one end is connected to
Between electric capacity CdUpper end, the other end and output stage resistance RdoConnection, output stage resistance RdoThe other end and resonance inverter power
The grid of switching tube is connected, input parasitic capacitance C of resonance inverter power switch pipeissIt is connected in parallel on resonance inverter power to open
Close between the grid and source electrode of pipe Q.
2. a kind of linear-resonance combined type hyperfrequency inverter according to claim 1, it is characterised in that described linear
Amplifier adopts voltage-controlled Class AB amplifiers.
3. a kind of linear-resonance combined type hyperfrequency inverter according to claim 1, it is characterised in that the resonance
Inverter is high-frequency resonant inverter.
4. a kind of linear-resonance combined type hyperfrequency inverter according to claim 3, it is characterised in that the high frequency
Resonance inverter adopts Class Φ2Resonance inverter.
5. a kind of linear-resonance combined type hyperfrequency inverter according to claim 1, it is characterised in that the resonance
The input impedance of drive circuit is open circuit compared to load impedance.
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| CN108233547A (en) * | 2018-01-15 | 2018-06-29 | 华南理工大学 | A kind of radio energy transmission system based on low stress inverter |
| CN108321943A (en) * | 2018-01-15 | 2018-07-24 | 华南理工大学 | A kind of wireless power transmission systems based on switching tube inverter altogether |
| CN108321943B (en) * | 2018-01-15 | 2023-07-18 | 华南理工大学 | Wireless power transmission system based on switching tube common-ground inverter |
| CN108123553B (en) * | 2018-01-15 | 2023-08-22 | 华南理工大学 | High-frequency high-power wireless power transmission system |
| CN108233547B (en) * | 2018-01-15 | 2024-04-12 | 华南理工大学 | Wireless power transmission system based on low-stress inverter |
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