CN113098445A - Dynamic tuning control method based on auxiliary sawtooth power supply - Google Patents
Dynamic tuning control method based on auxiliary sawtooth power supply Download PDFInfo
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- CN113098445A CN113098445A CN202110474426.0A CN202110474426A CN113098445A CN 113098445 A CN113098445 A CN 113098445A CN 202110474426 A CN202110474426 A CN 202110474426A CN 113098445 A CN113098445 A CN 113098445A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/14—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by auxiliary power
- H03J5/146—Settings desired by a switch controlled together with the tuning member and which stops the control as soon as a desired position is reached
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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
- H02M1/00—Details of apparatus for conversion
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The invention relates to a dynamic tuning control method based on an auxiliary sawtooth power supply, wherein a system containing a resonant network adopts a direct current power supply and an amplitude-adjustable sawtooth power supply which are connected in series to respectively compensate positive and negative half cycles of a square wave output by an original conversion circuit, and when the output voltage of a converter lags behind the output current, the sawtooth circuit compensates the square wave which enables the converter to output peak voltage to be gradually increased; when the output voltage of the converter is ahead of the output current, the sawtooth wave circuit compensates the square wave which enables the peak voltage output by the converter to be gradually reduced; the output voltage and current of the converter reach the same phase through sawtooth wave compensation, and the resonant circuit always keeps working in the optimal resonant state, so that the converter keeps the optimal switching state. The method simultaneously reduces the reactive power of the resonant network, increases the active power, and improves the efficiency and the power capacity of the conversion system.
Description
Technical Field
The invention relates to the technical field of dynamic tuning of a system with a resonant network, in particular to a dynamic tuning control method based on an auxiliary sawtooth power supply.
Background
Resonance transformation is an important method for realizing soft switching of a power electronic system, and is widely used in the field of power electronics. In practical applications, parameters of the resonant network may change due to aging of system components, changes in wireless power transmission distance, or changes in transmission medium. These parameter variations can easily cause system detuning, reducing system efficiency and even damaging switching elements.
In order to return the resonant system to a normal stable state when the resonant system is detuned, various tuning techniques have been proposed in the prior art, mainly including frequency tuning and impedance tuning. The frequency tuning mainly controls the operating frequency of the system or transforms the driving signal of the switching circuit. The impedance tuning is mainly achieved by adjusting the equivalent output impedance of the capacitor array, the controllable capacitor and the controllable inductor.
In the prior art resonant network tuning, the following problems exist: for example, in chinese patent publication No. CN1065059488B, different capacitance compensation combinations are formed by switching control to achieve tuning effects, but when the tuning accuracy requirement is high, the number of capacitors and switching tubes required by this switched capacitor array method is large, which causes problems of increased volume of the tuning circuit, complicated tuning control algorithm, high cost, and the like, and can only achieve compensation tuning of a limited number of discrete capacitance values. For example, in chinese patent publication nos. CN103199634A and CN209730906U, the tuning purpose is achieved by controlling the conduction angle of the switching tube with the phase control capacitor and the phase control inductor, respectively, but the tuning method of the phase control capacitor and the inductor needs a high frequency synchronization signal to control the conduction angle of the switching tube, and the switching loss is large due to the high switching frequency. For example, in chinese patent publication No. CN109818611B, a tuning method based on phase-locked loop frequency tracking control adjusts the operating frequency of the converter in real time by tracking the resonant frequency of the resonant network of the loop, but this method is easy to implement, but changes the resonant frequency of the system. For example, in chinese patent publication No. CN107769369A, an auxiliary converter is used for primary side tuning to generate a voltage having an adjustable phase difference with the output voltage of a main converter, and the primary side equivalent impedance can be made zero by controlling the phase difference of the main and auxiliary converters.
Disclosure of Invention
The invention provides a dynamic tuning control method based on an auxiliary sawtooth power supply, which ensures that a system works under the original inherent resonant frequency and the set optimal performance by adjusting the working state of the auxiliary sawtooth power supply when the system containing a resonant network is detuned.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a dynamic tuning control method based on an auxiliary sawtooth power supply comprises a converter NA, a resonant network TC and a load XL which are sequentially connected, and is characterized in that: the direct-current power supply Ep and the amplitude-adjustable sawtooth power supply Es are connected in series and then connected with the input end of a converter NA, a current sensor IS IS arranged between the converter NA and a resonant network TC, the output end of the converter NA IS connected with a voltage sensor UM, the output end of the current sensor IS and the output end of the voltage sensor UM are both connected with a phase discrimination circuit PD, and the phase discrimination circuit PD IS connected with a controller KP; the output driving signal of the controller KP is used for controlling the working states of the amplitude-adjustable sawtooth power source Es and the converter NA; the dynamic tuning control method comprises the following specific steps:
the controller KP sets the working frequency of the conversion circuit NA to a constant value f0And collecting the output square wave voltage U of the conversion circuit by using a voltage sensor UMnUsing a current sensor IS to collect the resonant loop current I of the conversion circuitnInputting current signals and voltage signals acquired by a voltage sensor UM and a current sensor IS into a phase discrimination circuit PD to acquire a phase difference
When the phase difference is between
When the amplitude is not 0, the output value of the phase discrimination circuit PD is used for changing the sawtooth voltage amplitude A of the sawtooth power supply Esm2；
When in use
When the system is in a capacitive detuning state, namely the voltage phase lags behind the current phase, the output slope coefficient k of the sawtooth power source Es is controlled to be 1, the sawtooth wave circuit compensates square waves which enable the converter to output the peak voltage to be gradually increased, and the phase difference between the current and the voltage of the resonant network is enabled after the sawtooth voltage compensation
Decrease;
when in use
When the system is in an inductive detuning state, namely the voltage phase is ahead of the current phase, the output slope coefficient k of the sawtooth power supply is controlled to be-1, the sawtooth wave circuit compensates the square wave which enables the converter to output the gradually reduced peak voltage, and the phase difference between the current and the voltage of the resonant network is enabled to be realized after the sawtooth voltage compensation
And (4) increasing.
Preferably, the controller KP sets the square-wave voltage amplitude a of the dc power supply Epm1And the sawtooth voltage amplitude A of the sawtooth power supply Es with adjustable amplitudem2A step value delta u of the amplitude of the sawtooth voltage;
when in use
The controller sets the sawtooth wave with sawtooth power supply voltage output slope coefficient k equal to 1, and the amplitude of the sawtooth power supply voltage is adjusted to Am2+ Δ u, forming a square wave with rising amplitude;
when in use
When the voltage of the sawtooth power supply is regulated to A, the controller sets the sawtooth wave with the sawtooth power supply voltage output slope coefficient k equal to-1m2-au, forming a square wave with decreasing amplitude.
Preferably, the transformed transformation circuit outputs square wave voltage U through harmonic analysis, Fourier transform and linear superposition principlenAnd the resonant tank current InPhase difference between
The expression of (a) is as follows:
in the formula, ZpIs the equivalent impedance of the system input end; k is a slope control coefficient, and the output of the direct current power supply is constant; a. them1Is the square wave voltage amplitude of the direct current power supply Ep; a. them2The amplitude of the sawtooth voltage of the sawtooth power source Es with adjustable amplitude is obtained;
in the form of an exponential of the fundamental component of the square wave voltage,
exponential form of a fundamental component for a sawtooth voltage component and
the sawtooth voltage component is an exponential version of the second fundamental component.
Preferably, the high-frequency converter NA employs a switching converter circuit having a topology.
Preferably, the sawtooth wave power source Es is used for realizing the positive and negative half cycles of the square wave for simultaneous compensation, or is used for compensating the positive half cycle or the negative half cycle separately.
Preferably, the sawtooth power source Es is arranged within the topology of the converter NA.
Preferably, the resonant network comprises a series resonant network, a parallel resonant network, a series-parallel resonant network or a wireless power transmission network.
Preferably, the reasons for the parameter variation of the resonant network include variation due to aging of elements, variation in transmission distance of wireless power, or variation in parameter due to variation in transmission medium.
Preferably, the energy of the amplitude adjustable sawtooth power source Es is obtained by a direct current power source Ep.
Preferably, the sawtooth compensation adds a delay as set at each compensation cycle.
The dynamic tuning control method based on the auxiliary sawtooth power supply has the following beneficial effects that: when a system containing the resonant network is detuned, the sawtooth power supply voltage output slope coefficient and the sawtooth power supply voltage amplitude are adjusted, so that the resonant network system can always work in a resonant state under detuning disturbance, and higher transmission efficiency and power are ensured. Furthermore, the dynamic tuning control method enables the system to carry out tuning control in capacitive detuning and inductive detuning.
Drawings
Fig. 1 is a schematic diagram of the circuit structure and control of the system including the resonant network according to the present invention.
FIG. 2 is a flow chart of a tuning control method of a dynamic tuning control method based on an auxiliary sawtooth power supply according to the present invention.
Fig. 3 is a graphical illustration of the tuning waveforms for different levels of detuning in the present invention.
Detailed Description
The invention is further described below with reference to the drawings and specific preferred embodiments.
The circuit structure containing the resonant network system IS shown in figure 1 and comprises a converter NA, a resonant network TC and a load XL which are sequentially connected, wherein a direct-current power supply Ep and an amplitude-adjustable sawtooth power supply Es are connected in series and then are connected with the input end of the converter NA, a current sensor IS IS arranged between the converter NA and the resonant network TC, the output end of the converter NA IS connected with a voltage sensor UM, the output end of the current sensor IS and the output end of the voltage sensor UM are both connected with a phase discrimination circuit PD, and the phase discrimination circuit PD IS connected with a controller KP; the output end of the controller KP is connected with the control signal input ends of the amplitude-adjustable sawtooth power source Es and the converter NA, and the output driving signal of the controller KP is used for controlling the working states of the amplitude-adjustable sawtooth power source Es and the converter NA.
Fig. 2 shows a dynamic tuning control method based on an auxiliary saw-tooth power supply, which includes the following steps:
the method comprises the following steps: the controller sets the operating frequency of the conversion circuit to a custom f0Entering the next step;
step two: the controller sets the amplitude A of the square wave voltagem1Saw tooth voltage amplitude Am2The step value of the amplitude of the sawtooth voltage is delta u;
step three: the controller sets a sawtooth power supply slope control coefficient k;
step four: respectively collecting output voltage U of conversion circuit by using voltage Hall sensor and current Hall sensornAnd a transmitting end resonant loop current InInputting the conditioned signal into a phase discrimination circuit to judge whether the phase difference is 0 or not, and entering the next step;
step five: if the phase difference is 0, returning to the fourth step; if the phase difference is less than zero, entering a sixth step; if the phase difference is larger than zero, entering a seventh step;
step six: judging that the system is in a capacitive detuning state, setting a sawtooth wave with a sawtooth power supply voltage output slope coefficient k equal to 1 by the controller, and adjusting the amplitude of the sawtooth power supply to Am2+ delta u, forming square waves with rising amplitude, and returning to the step four;
step seven: judging that the system is in an inductive detuning state, setting a sawtooth wave with a sawtooth wave power supply voltage output slope coefficient k equal to-1 by a controller, and adjusting the amplitude of the sawtooth wave power supply to Am2And Deltau, forming a square wave with reduced amplitude and returning to the step four.
In this embodiment, in step 4, the transformed transform circuit outputs square wave voltage U by using a harmonic analysis method, fourier transform, and a linear superposition principlenAnd the resonant tank current InPhase difference between
The expression of (a) is as follows:
in the formula, ZpIs composed ofEquivalent impedance of the system input; k is a slope control coefficient, and the output of the direct current power supply is constant; a. them1Is the square wave voltage amplitude of the direct current power supply Ep; a. them2The amplitude of the sawtooth voltage of the sawtooth power source Es with adjustable amplitude is obtained;
in the form of an exponential of the fundamental component of the square wave voltage,
exponential form of a fundamental component for a sawtooth voltage component and
the sawtooth voltage component is an exponential version of the second fundamental component.
From the above phase difference
By adjusting the amplitude A of the auxiliary sawtooth power supply voltagem2The input impedance angle of the system can be adjusted
The size of (2). Phase difference when the system is in resonance
Is 0; when the system is in capacitive detuning and inductive detuning, the amplitude A of the sawtooth power supply is controlledm2And increasing and decreasing to restore the system to a resonant working state.
Preferably, the high-frequency converter NA employs a switching converter circuit having a topology.
Preferably, the sawtooth wave power source Es is used for realizing the positive and negative half cycles of the square wave for simultaneous compensation, or is used for compensating the positive half cycle or the negative half cycle separately.
Preferably, the sawtooth power source Es is arranged within the topology of the converter NA.
Preferably, the resonant network comprises a series resonant network, a parallel resonant network, a series-parallel resonant network or a wireless power transmission network.
Preferably, the reasons for the parameter variation of the resonant network include variation due to aging of elements, variation in transmission distance of wireless power, or variation in parameter due to variation in transmission medium.
Preferably, the energy of the amplitude adjustable sawtooth power source Es is obtained by a direct current power source Ep.
Preferably, the sawtooth compensation adds a delay as set at each compensation cycle.
When a system containing a resonant network is detuned, as shown in FIG. 3, the detuned waveforms are different in degree of detuning, when the phase difference is large
When the system is in a capacitive detuning state, namely the voltage phase lags behind the current phase, the output slope coefficient k of the sawtooth power supply is controlled to be 1, the sawtooth wave circuit compensates a square wave which enables the peak voltage output by the converter to be gradually increased, and the phase difference between the current and the voltage of the resonant network can be enabled after the sawtooth voltage compensation
Decreasing until it is at or near 0. When in use
When the system is in an inductive detuning state, namely the voltage phase is ahead of the current phase, the output slope coefficient k of the sawtooth power supply is controlled to be-1, the sawtooth wave circuit compensates the square wave which enables the peak voltage output by the converter to be gradually reduced, and the phase difference between the current and the voltage of the resonant network can be enabled after the sawtooth voltage compensation
Increasing until it is 0 or close to 0.
In actual operation, the voltage amplitude A of square wavem120V, saw tooth voltage amplitude Am20V, the operating frequency of the conversion circuit being f0An example is a 100KHZ resonant network system.
When the system detects the phase difference between the output voltage and the current
Setting the step value delta u of the sawtooth voltage amplitude to be 1V, setting the slope control coefficient k of the sawtooth power supply to be 1, and adjusting the sawtooth voltage amplitude to be A through a controllerm2+1, continuously adjusting amplitude and phase difference during adjustment
Gradually increase when the amplitude of the sawtooth power supply is Am1When the voltage is equal to 18V, the phase difference is close to 0, and the system returns to a resonance state;
the system detects the phase difference between the output voltage and the current
The step value delta u of the sawtooth voltage amplitude is 1V, the slope control coefficient k of the sawtooth power supply is-1, and the sawtooth voltage amplitude is adjusted to A by the controllerm2-1, adjusting the amplitude value for a plurality of times, the phase difference during the adjustment
Gradually decrease when the amplitude of the sawtooth power supply is Am2When the voltage is equal to-9V, the phase difference is close to 0, and the system returns to the resonance state.
In summary, the dynamic tuning control method based on the auxiliary sawtooth power supply enables the system to carry out tuning control during capacitive detuning and inductive detuning, the amplitude of the tuning sawtooth power supply voltage required during the capacitive detuning is increased, and the amplitude of the tuning sawtooth power supply voltage required during the inductive detuning is decreased.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (10)
1. A dynamic tuning control method based on an auxiliary sawtooth power supply comprises a converter NA, a resonant network TC and a load XL which are sequentially connected, and is characterized in that: the direct-current power supply Ep and the amplitude-adjustable sawtooth power supply Es are connected in series and then connected with the input end of a converter NA, a current sensor IS IS arranged between the converter NA and a resonant network TC, the output end of the converter NA IS connected with a voltage sensor UM, the output end of the current sensor IS and the output end of the voltage sensor UM are both connected with a phase discrimination circuit PD, and the phase discrimination circuit PD IS connected with a controller KP; the output driving signal of the controller KP is used for controlling the working states of the amplitude-adjustable sawtooth power source Es and the converter NA; the dynamic tuning control method comprises the following specific steps:
the controller KP sets the working frequency of the conversion circuit NA to a constant value f0And collecting the output square wave voltage U of the conversion circuit by using a voltage sensor UMnUsing a current sensor IS to collect the resonant loop current I of the conversion circuitnInputting current signals and voltage signals acquired by a voltage sensor UM and a current sensor IS into a phase discrimination circuit PD to acquire a phase difference
When the phase difference is between
When the amplitude is not 0, the output value of the phase discrimination circuit PD is used for changing the sawtooth voltage amplitude A of the sawtooth power supply Esm2；
When in use
When the system is in a capacitive detuning state, namely the voltage phase lags behind the current phase, the output slope coefficient k of the sawtooth power source Es is controlled to be 1, the sawtooth wave circuit compensates square waves which enable the converter to output the peak voltage to be gradually increased, and the phase difference between the current and the voltage of the resonant network is enabled after the sawtooth voltage compensation
Decrease;
when in use
When the system is in an inductive detuning state, namely the voltage phase is ahead of the current phase, the output slope coefficient k of the sawtooth power supply is controlled to be-1, the sawtooth wave circuit compensates the square wave which enables the converter to output the gradually reduced peak voltage, and the phase difference between the current and the voltage of the resonant network is enabled to be realized after the sawtooth voltage compensation
And (4) increasing.
2. The dynamic tuning control method based on the auxiliary sawtooth power supply as claimed in claim 1, characterized in that: controller KP sets square wave voltage amplitude A of DC power supply Epm1And the sawtooth voltage amplitude Am of the sawtooth power supply Es with adjustable amplitude2A step value delta u of the amplitude of the sawtooth voltage;
when in use
The controller sets the sawtooth wave with sawtooth power supply voltage output slope coefficient k equal to 1, and the amplitude of the sawtooth power supply voltage is adjusted to Am2+ Δ u, forming a square wave with rising amplitude;
when in use
The controller sets a sawtooth wave with a sawtooth power supply voltage output slope coefficient k equal to-1, and the sawtooth power supply voltageThe pressure amplitude is adjusted to Am2-au, forming a square wave with decreasing amplitude.
3. The dynamic tuning control method based on the auxiliary sawtooth power supply as claimed in claim 1, characterized in that: the transformed conversion circuit outputs square wave voltage U through a harmonic analysis method, Fourier transform and a linear superposition principlenAnd the resonant tank current InPhase difference between
The expression of (a) is as follows:
in the formula, ZpIs the equivalent impedance of the system input end; k is a slope control coefficient, and the output of the direct current power supply is constant; a. them1Is the square wave voltage amplitude of the direct current power supply Ep; a. them2The amplitude of the sawtooth voltage of the sawtooth power source Es with adjustable amplitude is obtained;
in the form of an exponential of the fundamental component of the square wave voltage,
exponential form of a fundamental component for a sawtooth voltage component and
the sawtooth voltage component is an exponential version of the second fundamental component.
4. The dynamic tuning control method based on the auxiliary sawtooth power supply as claimed in claim 1, characterized in that: the high-frequency converter NA employs a switching conversion circuit having a topology.
5. The dynamic tuning control method based on the auxiliary sawtooth power supply as claimed in claim 1, characterized in that: the sawtooth wave power source Es is used for realizing the simultaneous compensation of the positive half cycle and the negative half cycle of the square wave, or is used for singly compensating the positive half cycle or the negative half cycle.
6. The dynamic tuning control method based on the auxiliary sawtooth power supply as claimed in claim 1, characterized in that: the sawtooth wave power source Es is arranged in the topological structure of the converter NA.
7. The dynamic tuning control method based on the auxiliary sawtooth power supply as claimed in claim 1, characterized in that: the resonant network comprises a series resonant network, a parallel resonant network, a series-parallel resonant network or a wireless power transmission network.
8. The dynamic tuning control method based on the auxiliary sawtooth power supply as claimed in claim 1, characterized in that: the reasons for the parameter change of the resonant network include the parameter change caused by the aging of elements, the wireless power transmission distance change or the transmission medium change.
9. The dynamic tuning control method based on the auxiliary sawtooth power supply as claimed in claim 1, characterized in that: the energy of the amplitude-adjustable sawtooth power source Es is obtained by a direct current power source Ep.
10. The dynamic tuning control method based on the auxiliary sawtooth power supply as claimed in claim 1, characterized in that: in each compensation period, the sawtooth wave compensation adds delay according to the setting.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE862774C (en) * | 1950-03-08 | 1953-01-12 | Rca Corp | Device for frequency control of a vibration generator |
| IL73671A0 (en) * | 1983-12-22 | 1985-02-28 | Gen Electric | X-ray generator with phase-advance voltage feedback |
| JPH11225472A (en) * | 1998-02-04 | 1999-08-17 | Shintom Co Ltd | Power supply unit and electronic appliance therewith |
| US20100157638A1 (en) * | 2008-12-20 | 2010-06-24 | Azuray Technologies, Inc. | Energy Conversion Systems With Power Control |
| CN111219295A (en) * | 2020-03-02 | 2020-06-02 | 南京信息工程大学 | Wind power curve compensation control device and method for wind driven generator |
| CN111308247A (en) * | 2020-03-15 | 2020-06-19 | 东南大学 | WPT system harmonic judgment method based on unilateral detection current phase change rate detection |
-
2021
- 2021-04-29 CN CN202110474426.0A patent/CN113098445B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE862774C (en) * | 1950-03-08 | 1953-01-12 | Rca Corp | Device for frequency control of a vibration generator |
| IL73671A0 (en) * | 1983-12-22 | 1985-02-28 | Gen Electric | X-ray generator with phase-advance voltage feedback |
| JPH11225472A (en) * | 1998-02-04 | 1999-08-17 | Shintom Co Ltd | Power supply unit and electronic appliance therewith |
| US20100157638A1 (en) * | 2008-12-20 | 2010-06-24 | Azuray Technologies, Inc. | Energy Conversion Systems With Power Control |
| CN111219295A (en) * | 2020-03-02 | 2020-06-02 | 南京信息工程大学 | Wind power curve compensation control device and method for wind driven generator |
| CN111308247A (en) * | 2020-03-15 | 2020-06-19 | 东南大学 | WPT system harmonic judgment method based on unilateral detection current phase change rate detection |
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