CN116526815A - High-frequency power supply and direct-current voltage stabilizing device applied to same - Google Patents
High-frequency power supply and direct-current voltage stabilizing device applied to same Download PDFInfo
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- CN116526815A CN116526815A CN202310516235.5A CN202310516235A CN116526815A CN 116526815 A CN116526815 A CN 116526815A CN 202310516235 A CN202310516235 A CN 202310516235A CN 116526815 A CN116526815 A CN 116526815A
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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
- H02M1/14—Arrangements for reducing ripples from dc input or output
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
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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
- 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
- H02M3/33571—Half-bridge at primary side of an isolation transformer
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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
- 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
- H02M3/33576—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 having at least one active switching element at the secondary side of an isolation transformer
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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
Abstract
The embodiment of the specification provides a high-frequency power supply and a direct-current voltage stabilizing device applied to the high-frequency power supply, and relates to the field of heating. A DC voltage stabilizing device for a high frequency power supply includes: the input end of each direct current voltage stabilizing module receives a signal to be stabilized, delay exists among the signals to be stabilized received by different direct current voltage stabilizing modules, the output ends of the plurality of direct current voltage stabilizing modules in parallel output a target voltage stabilizing signal, and the target voltage stabilizing signal is superposition of the signals after voltage stabilization output by the plurality of direct current voltage stabilizing modules. The multi-stage direct current voltage stabilizing module receives a plurality of signals with time delay, so that the ripples of the signals after voltage stabilization are staggered when being overlapped, the ripples can be eliminated in a counteraction mode, and the stability of a target voltage stabilizing signal is improved.
Description
Description of the division
The application is a divisional application of the invention patent application with the application number of 202211555523.3, the application date of 2022, 12 and 6, and the name of a high-frequency power supply and a direct-current voltage stabilizing device applied to the high-frequency power supply.
Technical Field
The present disclosure relates to the field of heating, and in particular, to a high frequency power supply and a dc voltage regulator device applied to the high frequency power supply.
Background
Heating technology is an important technology in modern industrial production. In some scenarios, a heating device may have a need for a high frequency power source that may provide energy to the heating device to heat a target object.
However, due to the arrangement of the switching device, a part of alternating current component can be remained in the voltage stabilizing process of the direct current voltage stabilizing device in the current high-frequency power supply, so that larger ripple wave still exists in the voltage stabilizing signal, and the fluctuation amplitude of the output voltage stabilizing signal is larger.
Disclosure of Invention
One of the embodiments of the present specification provides a direct current voltage stabilizing device applied to a high frequency power source, the device comprising: the input end of each direct current voltage stabilizing module receives a signal to be stabilized, delay exists among the signals to be stabilized received by different direct current voltage stabilizing modules, the output ends of the plurality of direct current voltage stabilizing modules in parallel output a target voltage stabilizing signal, and the target voltage stabilizing signal is superposition of the signals after voltage stabilization output by the plurality of direct current voltage stabilizing modules.
In some embodiments, each dc voltage regulator module includes a first voltage regulator circuit and a second voltage regulator circuit, the first voltage regulator circuit and the second voltage regulator circuit being connected in series, the first voltage regulator circuit and the second voltage regulator circuit having different efficiencies.
In some embodiments, the first voltage stabilizing circuit is a Buck circuit, the second voltage stabilizing circuit is an LLC circuit, an input end of the Buck circuit receives a signal to be stabilized, an output end of the Buck circuit is connected with an input end of the LLC circuit, and an output end of the LLC circuit outputs a signal stabilized by the Buck circuit and the LLC circuit.
In some embodiments, the delay between the signals to be stabilized received by two adjacent dc voltage stabilizing modules is related to the signal at the output of at least one dc voltage stabilizing module.
In some embodiments, the delay corresponds to the period of the signal at the output of the dc voltage stabilizing module and the number of the plurality of dc voltage stabilizing modules.
In some embodiments, the delay is the same as the ratio of the period of the signal at the output of the dc voltage stabilizing module to the number of the plurality of dc voltage stabilizing modules.
In some embodiments, input ends of the plurality of parallel direct current voltage stabilizing modules are connected with a rectifying circuit, and the rectifying circuit rectifies an external power supply to provide signals to be stabilized for the plurality of parallel direct current voltage stabilizing modules; the output ends of the plurality of parallel direct current voltage stabilizing modules are connected with the power device to provide a target voltage stabilizing signal for the power device so that the power device can generate an electric signal with target alternating current frequency.
One of the embodiments of the present specification provides a high-frequency power supply. The power supply includes: the direct current voltage stabilizing device is used for receiving a signal to be stabilized and outputting a target voltage stabilizing signal to the power device; the power device is used for carrying out power adjustment on the target voltage stabilizing signal so as to generate an electric signal of target alternating current frequency; and the transformer is used for transforming the electric signal of the target alternating-current frequency so that the high-frequency power supply provides an output signal.
The direct current voltage stabilizing device provided by the specification can receive a plurality of signals with time delay through the multistage direct current voltage stabilizing module, so that the ripples of the signals after voltage stabilization are misplaced in superposition, the ripples can be eliminated in a counteracting mode, and the stability of a target voltage stabilizing signal is improved.
Drawings
The present specification will be further elucidated by way of example embodiments, which will be described in detail by means of the accompanying drawings. The embodiments are not limiting, in which like numerals represent like structures, wherein:
FIG. 1 is a block diagram of a high frequency power supply according to some embodiments of the present description;
fig. 2 is a block diagram of a dc voltage regulator device according to some embodiments of the present disclosure;
FIG. 3 is a schematic diagram of a signal conditioning principle shown in accordance with some embodiments of the present description;
fig. 4 is a circuit schematic diagram of a dc voltage regulation module according to some embodiments of the present disclosure.
Reference numerals: 100-high frequency power supply; 110-a direct current voltage stabilizing device; 111-a direct current voltage stabilizing module; 112-a first voltage stabilizing circuit; 113-a second voltage stabilizing circuit; 114-a control circuit; 120-power devices; 130-a transformer; 310-a first signal; 311—ripple peak of signal 1 after voltage stabilization; 312-ripple trough of signal 1 after voltage stabilization; 320-a second signal; 321-ripple peaks of the stabilized signal 2; 322-ripple trough of signal 2 after voltage stabilization; 330-third signal.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present specification, and it is possible for those of ordinary skill in the art to apply the present specification to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.
It will be appreciated that "system," "device" and/or "module" as used herein is one method for distinguishing between different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.
As used in this specification and the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the term "comprising" merely indicates that the explicitly identified steps and elements are included, and that these steps and elements do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.
A flowchart is used in this specification to describe the operations performed by the system according to embodiments of the present specification. It should be appreciated that the preceding or following operations are not necessarily performed in order precisely. Rather, the steps may be processed in reverse order or simultaneously. Also, other operations may be added to or removed from these processes.
In some embodiments, the dc voltage stabilizing device may provide a stable dc electrical signal, so as to be applied to various situations where electrical energy is needed, such as a power transmission situation where the dc electrical signal is used for power transmission, another electrical energy management situation where the dc electrical signal is used for power generation and distribution, and another electrical energy conversion situation where the dc electrical signal is used for voltage boosting and dropping.
In some embodiments, the direct current voltage stabilizing device can be applied to a high frequency power supply, the high frequency power supply can be applied to a heating system, the high frequency power supply can provide electric energy, so that heat energy is transferred to powder to be heated through energy conversion to heat the powder, the powder is melted to reach a melting point, and the melt is supersaturated at a seed crystal position to enable the seed crystal to grow, so that the crystal is obtained.
The specification describes a heating system that can provide high frequency signal through the high frequency power to resonance subassembly, and the drive resonance subassembly produces electromagnetic field and directly acts on the powder, reduces the energy of transmission for the pot body when heating the powder, avoids the pot body to take place deformation or volatilize because of heating to realize the heating to the powder of high melting point.
The specification also describes a direct current voltage stabilizing device applied to a high-frequency power supply, and the direct current voltage stabilizing device can receive a plurality of signals with time delay through a multi-stage direct current voltage stabilizing module, so that the ripples of the signals after voltage stabilization are misplaced when being overlapped, and the ripples can be eliminated in a counteraction mode, and the stability of a target voltage stabilizing signal is improved.
It should be understood that the application scenario of the heating system of the present specification is merely some examples or embodiments of the present specification, and it is possible for those skilled in the art to apply the present specification to other similar scenarios according to these drawings without the inventive effort.
The dc voltage stabilizing device according to the embodiment of the present invention will be described in detail with reference to fig. 1 to 4. It is noted that the following examples are only for explanation of the present specification and are not to be construed as limiting the present specification.
Fig. 1 is a block diagram of a high frequency power supply 100 according to some embodiments of the present description. As shown in fig. 1, in some embodiments, high frequency power supply 100 includes a dc voltage regulator 110, a power device 120, and a transformer 130. The dc voltage stabilizing device 110 is configured to receive a signal to be stabilized and output a target voltage stabilizing signal to the power device 120. In some embodiments, the dc voltage stabilizing device 110 may delay receiving a plurality of signals to be stabilized, and counteract the ripple of the signals to be stabilized by superimposing the signals, so that the voltage of the obtained target voltage stabilizing signal is stable. Reference may be made to other details in this specification, such as fig. 2-4 and the related description, for a specific implementation of the dc voltage regulator 110.
The power device 120 may perform power regulation for the target regulated signal to generate an electrical signal at the target ac frequency. In some embodiments, the power devices 120 may generate electrical signals through parallel multi-stage power modules, and then combine the signals from the output terminals to generate the electrical signal of the target ac frequency. In some embodiments, the power at the output of the power device 120 may be the same as the sum of the output powers of the multiple power modules. In some embodiments, the multi-stage power modules operate in a time-sharing manner, and the sum of specific preset ac frequencies of the electrical signals output by the power modules at each stage is the same as the target ac frequency. In some embodiments, the multiple power modules operate simultaneously, and the target ac frequency of the electrical signal output by the output terminal may be the same as a specific preset ac frequency of the electrical signal output by each power module. Therefore, the power device 120 can shunt the circuit where each level of power module is located by designing the parallel multi-level power module, reduce the current stress required to be born by each level of power module, increase the degree of freedom of module selection, and reduce the circuit cost. Furthermore, the parallel connection between the multi-stage power modules has lower requirement on the inductance in the output loop of the power module, so that the ripple wave output by the power device 120 can be reduced.
The transformer 130 may transform the electric signal of the target ac frequency so that the high frequency power source 100 provides an output signal. In some embodiments, the transformer 130 may perform electromagnetic induction through a planar coil disposed on a PCB board, and adjust electromagnetic induction intensity using a magnetic core structure, thereby outputting an electrical signal to supply power. In some embodiments, the transformer 130 may include a PCB board, planar coil, magnetic core structure. The PCB board may be used to carry the planar coil such that the planar coil is disposed around the magnetic core structure. The planar coils can receive alternating current signals and generate electromagnetic induction, so that the alternating current signals can be transmitted from one layer of planar coils to the other layer of planar coils, and signal transmission is realized. In some embodiments, the magnetic core structure may adjust the strength of electromagnetic induction, thereby adjusting parameters of the ac electrical signal (e.g., voltage, frequency, etc. of the signal) to achieve signal processing.
Further, in some embodiments, the transformer 130 may include a multi-layer PCB board, a multi-layer planar coil, a magnetic core structure. Each layer of PCB board is provided with a hollow structure, and each layer of planar coil is fixed on one layer of PCB board and surrounds the hollow structure. The magnetic core structure may include a plurality of magnetic core plates, each of which may be disposed in a hollowed-out structure of each layer of PCB board, and a space may exist between two adjacent magnetic core plates (e.g., a first magnetic core plate and a second magnetic core plate). Thus, the transformer 130 can reduce the skin effect of the planar coil and improve the power of the transformer by arranging the planar coil in the PCB board with the skin effect area of the planar coil being close to the cross-sectional area of the conductive wire, and by enlarging the heat dissipation area while reducing the resistance of the coil. Also, the power consumption of the transformer 130 is much lower than that of a conventional intermediate frequency transformer at the same power and frequency output. In addition, the transformer 130 can be more effectively applied to high frequency scenes and is smaller in size.
In some embodiments, the high frequency power supply 100 may further include a rectifying device, which may be connected to an external power source, and which may be used to rectify the received three-phase electrical signal, and output a direct current electrical signal to the direct current voltage stabilizing device 110. In some embodiments, the rectifying device may include an electromagnetic interference filter and a three-phase rectifying bridge, where the electromagnetic interference filter may filter the received three-phase electrical signal, reduce electromagnetic interference caused by an external environment, and the three-phase rectifying bridge may convert the three-phase electrical signal into a direct current electrical signal.
In some embodiments, high frequency power supply 100 may also include a processor and a sampler, where the processor may be used to control the operation of devices (e.g., dc voltage regulator 110, power device 120, and transformer 130, etc.) and process data. The sampler may sample an output signal provided by the high frequency power supply 100 and send the sampled signal to the processor so that the processor adjusts the operating state of the device. In some embodiments, the high-frequency power supply 100 may further include a fuse, where the fuse may monitor the output of a plurality of devices (such as the dc voltage regulator 110, the power device 120, and the transformer 130) in the high-frequency power supply 100, so as to avoid over-current, over-voltage, over-text, over-frequency, or under-voltage of the devices, and ensure that the devices work normally.
In some embodiments, high frequency power supply 100 may also include capacitive isolation driving circuitry that may be used to isolate the processor from other devices in high frequency power supply 100 (e.g., dc voltage regulator 110, power device 120, transformer 130, etc.), isolating the high voltage transmission from the low voltage control using capacitive isolation techniques.
Several embodiments are provided below to describe in detail the specific implementation of dc voltage regulator 110, power device 120, and transformer 130.
Fig. 2 is a block diagram of a dc voltage regulator 110 according to some embodiments of the present disclosure. As shown in fig. 2, in some embodiments, the dc voltage stabilizing device 110 may include: the input end of each direct current voltage stabilizing module 111 receives signals to be stabilized, delay exists among the signals to be stabilized received by different direct current voltage stabilizing modules 111, the output ends of the plurality of direct current voltage stabilizing modules 111 in parallel output target voltage stabilizing signals, and the target voltage stabilizing signals are superposition of the signals after voltage stabilization output by the plurality of direct current voltage stabilizing modules 111.
The dc voltage stabilizing module 111 may be a circuit module that still provides a stable dc signal when the input grid voltage fluctuates or the load changes. In some embodiments, the dc voltage stabilizing modules 111 may be phase-shifted and connected in parallel, so that each dc voltage stabilizing module 111 may receive a signal to be stabilized with the same waveform and different timing. Because there is a certain noise and/or ripple in the signal to be stabilized, in some embodiments, each dc voltage stabilizing module 111 may filter a signal to be stabilized, filter a certain noise and/or ripple, and output a signal after voltage stabilization. In some embodiments, there may be a delay between the signals to be stabilized received by the different dc voltage stabilizing modules 111, so that there may also be the same delay between the stabilized signals output by the different dc voltage stabilizing modules 111. Since the dc voltage stabilizing module 111 generally uses a switching device for filtering, a small portion of ripple may still exist in the signal after voltage stabilization. By setting time delay between different stabilized signals, the ripples of the multiple stabilized signals are staggered in superposition, so that the ripples can be eliminated in a counteraction mode, and a target stabilized signal is obtained.
Fig. 3 is a schematic diagram of a signal conditioning principle according to some embodiments of the present description. As shown in fig. 3, the first signal 310 may be a stabilized signal 1, the second signal 320 may be a stabilized signal 2, and the third signal 330 may be a target stabilized signal. Due to the presence of ripple, there is a certain fluctuation of the first signal 310 and the second signal 320. Further, there is a time delay T0 between the first signal 310 and the second signal 320, so that the ripple peak 311 of the stabilized signal 1 corresponds to the ripple trough 322 of the stabilized signal 2 in time sequence, and the ripple trough 312 of the stabilized signal 1 corresponds to the ripple peak 321 of the stabilized signal 2 in time sequence. When the first signal 310 and the second signal 320 are superimposed, the ripple peak 311 of the stabilized signal 1 may be cancelled by the ripple trough 322 of the stabilized signal 2, and the ripple trough 312 of the stabilized signal 1 and the ripple peak 321 of the stabilized signal 2 may be cancelled, so as to obtain the superimposed third signal 330.
In the embodiment of the present disclosure, the multi-stage dc voltage stabilizing module 111 receives a plurality of signals with time delay, so that the ripples of the signals after voltage stabilization are staggered when being superimposed, and thus the ripples can be eliminated by a counteracting manner, and the stability of the target voltage stabilizing signal is improved.
In some embodiments, the delay between the signals to be stabilized received by two adjacent dc voltage stabilizing modules 111 may be related to the signal at the output of at least one dc voltage stabilizing module 111. Further, in some embodiments, the delay between the signals to be stabilized received by the two adjacent dc voltage stabilizing modules 111 may be related to the period of the signal at the output of the dc voltage stabilizing module 111. In order to enable the ripple peaks and ripple troughs of adjacent two signals to correspond in time sequence (as shown in fig. 3), the positions of the ripple peaks and the ripple troughs in time sequence may be adjusted according to the period of at least one signal. As shown in fig. 3, the delay T0 between the first signal 310 and the second signal 320 may be related to the period T of the stabilized signal, and the delay T0 may be an odd multiple of one half of the period T.
In some embodiments, the ratio of the period of the signal at the output of the dc voltage stabilizing module 111 to the number of the plurality of dc voltage stabilizing modules 111 is related to the delay. In some embodiments, the delay is the same as the ratio of the period of the signal at the output of the dc voltage stabilizing module 111 to the number of the plurality of dc voltage stabilizing modules 111. For example, if there are 10 dc voltage stabilizing modules 111 connected in parallel, the period of the signal at the output end of the dc voltage stabilizing module 111 is 100 μs, the delay may be 10 μs, the 1 st dc voltage stabilizing module 111 may receive the signal to be stabilized from 0s, the 2 nd dc voltage stabilizing module 111 may receive the signal to be stabilized from 10 μs, and so on, the 10 th dc voltage stabilizing module 111 may receive the signal to be stabilized from 90 μs, so that by superposition of the 10 stabilized signals, the ripple in the signal may be counteracted.
In some embodiments, each dc voltage stabilizing module 111 may include a first voltage stabilizing circuit 112 and a second voltage stabilizing circuit 113, the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 being connected in series, the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 having different efficiencies.
In some embodiments, each dc voltage regulation module 111 may include one or more voltage regulation circuits. In some embodiments, the voltage regulator circuit may be a combination of one or more circuits including a Buck circuit, an LLC circuit, a BOOST circuit, and the like. The efficiency of the voltage stabilizing circuit can reflect the comparison relation between the output power and the loss power of the voltage stabilizing circuit, and the higher efficiency of the voltage stabilizing circuit can reflect the higher output power and the lower loss power of the voltage stabilizing circuit; conversely, the lower efficiency of the voltage stabilizing circuit can reflect the lower output power and higher loss power of the voltage stabilizing circuit. There may be a difference in the efficiency of the different voltage stabilizing circuits, for example, the efficiency of the Buck circuit may be lower than that of the LLC circuit. Furthermore, the stability of the voltage stabilizing circuit may reflect the degree of ripple suppression of the voltage stabilizing circuit. The stability of the voltage stabilizing circuit is higher, so that the suppression effect of the voltage stabilizing circuit on the ripple waves is better, and on the contrary, the stability of the voltage stabilizing circuit is lower, so that the suppression effect of the voltage stabilizing circuit on the ripple waves is poorer. There is also a difference in stability of different voltage stabilizing circuits, for example, the stability of LLC circuits is lower than that of Buck circuits.
In some embodiments, when the dc voltage stabilizing module 111 includes the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113, the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 may be sequentially connected in series, so as to perform multiple filtering and voltage stabilizing processes on the signal to be stabilized, so that the output of the dc voltage stabilizing module 111 is more stable. In some embodiments, the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 may be coupled through transformers, thereby achieving circuit isolation while being connected in series, reducing signal interactions.
In some embodiments, the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 may have different efficiencies, so that the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 may be complementary to each other, so as to ensure the overall efficiency of the dc voltage stabilizing module 111. In some embodiments, the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 may have different stabilities, so that the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 may be complementary to each other, and the overall stability of the dc voltage stabilizing module 111 is ensured. In addition, the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 may have different topologies, so that different filtering modes can be used to perform filtering and voltage stabilizing processing on signals. For example, the first voltage stabilizing circuit may be a Buck circuit, the second voltage stabilizing circuit may be an LLC circuit, the Buck circuit has low efficiency but high stability, and the LLC circuit has high efficiency but poor stability, so that the two-stage voltage stabilizing circuit formed by the Buck circuit and the LLC circuit may have good stability and efficiency.
In the embodiment of the specification, the multistage voltage stabilizing circuits are arranged, so that different voltage stabilizing circuits can be mutually complemented, and multiple voltage stabilizing treatments can be performed on signals to be stabilized in multiple voltage stabilizing modes, so that the overall stability and efficiency of the direct current voltage stabilizing module 111 are ensured.
It should be noted that, the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113 are only examples, the dc voltage stabilizing module 111 may further include two or more voltage stabilizing circuits, such as a third voltage stabilizing circuit, a fourth voltage stabilizing circuit, and the like, and the specific number of the voltage stabilizing circuits may be adjusted according to the filtering voltage stabilizing effect required by the dc voltage stabilizing module 111.
An exemplary dc voltage regulator module 111 is provided below to illustrate in detail the specific implementation of the first voltage regulator circuit 112 and the second voltage regulator circuit 113.
In some embodiments, the first voltage stabilizing circuit 112 is a Buck circuit, the second voltage stabilizing circuit 113 is an LLC circuit, an input terminal of the Buck circuit receives a signal to be stabilized, an output terminal of the Buck circuit is connected to an input terminal of the LLC circuit, and an output terminal of the LLC circuit outputs a signal stabilized by the Buck circuit and the LLC circuit.
In some embodiments, the Buck circuit may control the on and off of the switching element according to a comparison result of the voltage output by the Buck circuit and the reference voltage, so that the output voltage approaches the reference voltage, thereby improving stability of the output voltage. In some embodiments, the LLC circuit may control the switching of the charge and discharge states of the resonant capacitor by controlling the on and off of the switching element, thereby adjusting the gain provided by the LLC circuit to stabilize the voltage of the output. In some embodiments, the output of the Buck circuit may be connected to the input of the LLC circuit through a transformer, which may be used to achieve circuit isolation while transmitting signals, reducing the interaction of the signals.
Correspondingly, in some embodiments, the dc voltage stabilizing module 111 may further include a control circuit 114, where the control circuit 114 may be connected to the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113, respectively, and the control circuit 114 may control a state of a device (e.g. on and off of a switch element), may provide data (e.g. a reference voltage) to the voltage stabilizing circuit, or perform processing and operation of the data (e.g. comparing an output voltage with the reference voltage).
Fig. 4 is a schematic circuit diagram of the dc voltage stabilizing module 111 according to some embodiments of the present disclosure. As shown in fig. 4, the first voltage stabilizing circuit 112 may include: capacitor C1-capacitor C3, inductance L1-L2, switch Q1, diode D1. The two ends of the voltage C1 may be respectively used as an input positive electrode vin+ and an input negative electrode Vin-, for receiving a signal to be stabilized. The first end of the capacitor C1 may be connected to one end of the capacitor C2 through the inductor L1, and the other end of the capacitor C2 may be grounded. The connection point of the capacitor C2 and the inductor L1 may be connected to the source of the switch Q1, the gate of the switch Q1 is connected to the control circuit 114, and is configured to receive a driving signal from the control circuit 114, the drain of the switch Q1 is connected to the cathode of the diode D1, and the anode of the diode D1 is grounded. The negative pole of diode D1 is connected with one end of electric capacity C3 through inductance L2, and electric capacity C3's the ground connection of the other end, and the signal of steady voltage through first voltage stabilizing circuit 112 can be output at the both ends of electric capacity C3.
In some embodiments, when the output voltage VTEST is lower than the reference voltage VB, the control circuit 114 may control the switch Q1 to be turned on, and boost the voltage of the output signal while charging the capacitor C3; when the output voltage VTEST is lower than the reference voltage VB, the control circuit 114 may control the switching element Q1 to be turned off so that the capacitor C3 discharges while reducing the voltage of the output signal to make the voltage of the output signal approach the reference voltage VB.
In some embodiments, the control circuit 114 may collect the output voltage VTEST from the primary side of the transformer T1, and the primary side of the transformer T1 may also provide the power source VCC2 to power the control circuit 114.
In some embodiments, the second voltage stabilizing circuit 113 may include: switching elements Q2-Q5, transformer T1 and capacitor C4, switching elements Q6-Q9, capacitors C5-C6, resistor R1 and inductor L3. The drain of the switching element Q6 may be connected to the source of the switching element Q8 and to the secondary side output of the transformer T1, and the drain of the switching element Q7 may be connected to the source of the switching element Q9 and to the secondary side input of the transformer T1. The drains of the switch Q8 and the switch Q9 are connected with a reference negative electrode S-, the sources of the switch Q6 and the switch Q7 are connected with one end of a capacitor C5, and the drains are also connected with a reference positive electrode S+ and one end of the capacitor C6 respectively through an inductor L3. The other end of the capacitor C5 is connected with the source electrode of the switch element Q9 and is also connected with the reference negative electrode S-and the other end of the capacitor C6 through a resistor R1. Both ends of the capacitor C6 may be respectively used as an output positive electrode vout+ and an output negative electrode Vout-for outputting the signal stabilized by the first voltage stabilizing circuit 112 and the second voltage stabilizing circuit 113. In some embodiments, the control circuit 114 may also collect a regulated signal that outputs the positive pole vout+ to regulate the operating state of the second voltage regulator circuit 113.
In some embodiments, when the second voltage regulator circuit 113 is operating in an LLC resonant state (e.g., the capacitor C4 is resonating with leakage inductance within the transformer T1), the switching elements Q6-Q9 may achieve soft-switching of the switching elements, thereby reducing switching losses. When the output voltage at two ends of the capacitor C6 changes, the voltage obtained by the capacitor C5 and the inductor L3 can be stabilized by adjusting the switching frequency of the switching elements Q6-Q9, so as to maintain the voltage at two ends of the capacitor C6 stable.
In some embodiments, the control circuit 114 of the dc voltage regulator 110 may be a module in the processor of the high frequency power supply 100, or may be separately provided from the processor. In some embodiments, transformer T1 differs from transformer 130 described above in terms of structure and function, the primary side of transformer T1 being connected to switching elements Q2-Q5, the secondary side being connected to switching elements Q6-Q9, and transformer T1 being operable to transmit signals between switching elements Q2-Q9. The primary side of the transformer 130 is connected to the power device 120, the secondary side of the transformer 130 is used to provide an output signal to the resonant assembly 200, and the transformer 130 may be used to change the properties (e.g., voltage, etc.) of the ac signal.
In some embodiments, the input ends of the plurality of parallel dc voltage stabilizing modules 111 are connected to a rectifying circuit, and the rectifying circuit can rectify an external power source to provide a signal to be stabilized for the plurality of parallel dc voltage stabilizing modules 111. The output ends of the plurality of parallel direct current voltage stabilizing modules 111 are connected with the power device 120 to provide a target voltage stabilizing signal for the power device 120 so that the power device 120 generates an electric signal with a target alternating current frequency.
Possible benefits of embodiments of the present description include, but are not limited to: the multistage direct current voltage stabilizing module 111 receives a plurality of signals with time delay, so that the ripples of the signals after voltage stabilization are staggered when being overlapped, the ripples can be eliminated in a counteraction mode, and the stability of the target voltage stabilizing signal is improved.
While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations to the present disclosure may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this specification, and therefore, such modifications, improvements, and modifications are intended to be included within the spirit and scope of the exemplary embodiments of the present invention.
Meanwhile, the specification uses specific words to describe the embodiments of the specification. Reference to "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present description. Thus, it should be emphasized and should be appreciated that two or more references to "some embodiments" in this specification at different positions are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present description may be combined as suitable.
Furthermore, the order in which the elements and sequences are processed, the use of numerical letters, or other designations in the description are not intended to limit the order in which the processes and methods of the description are performed unless explicitly recited in the claims. While certain presently useful inventive embodiments have been discussed in the foregoing disclosure, by way of various examples, it is to be understood that such details are merely illustrative and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements included within the spirit and scope of the embodiments of the present disclosure. For example, while the system components described above may be implemented by hardware devices, they may also be implemented solely by software solutions, such as installing the described system on an existing server or mobile device.
Likewise, it should be noted that in order to simplify the presentation disclosed in this specification and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are presented in the claims are required for the present description. Indeed, less than all of the features of a single embodiment disclosed above.
In some embodiments numbers are used that describe the number of components, attributes. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations that may be employed in some embodiments to confirm the breadth of the range, in particular embodiments, the setting of such numerical values is as precise as possible.
Each patent, patent application publication, and other material, such as articles, books, specifications, publications, documents, etc., referred to in this specification is incorporated herein by reference in its entirety. Except for application history documents that are inconsistent or conflicting with the content of this specification, documents that are currently or later attached to this specification in which the broadest scope of the claims to this specification is limited are also. It is noted that, if the description, definition, and/or use of a term in an attached material in this specification does not conform to or conflict with what is described in this specification, the description, definition, and/or use of the term in this specification controls.
Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments of this specification. Other variations are possible within the scope of this description. Thus, by way of example, and not limitation, alternative configurations of embodiments of the present specification may be considered as consistent with the teachings of the present specification. Accordingly, the embodiments of the present specification are not limited to only the embodiments explicitly described and depicted in the present specification.
Claims (7)
1. A dc voltage regulator for a high frequency power supply, comprising:
the direct-current voltage stabilizing module comprises a first voltage stabilizing circuit and a second voltage stabilizing circuit which are connected in series, the efficiency of the second voltage stabilizing circuit is higher than that of the first voltage stabilizing circuit, and the stability of the first voltage stabilizing circuit is higher than that of the second voltage stabilizing circuit; the first voltage stabilizing circuit comprises a Buck circuit, the second voltage stabilizing circuit comprises an LLC circuit, the input end of the Buck circuit receives a signal to be stabilized, the output end of the Buck circuit is connected with the input end of the LLC circuit, and the output end of the LLC circuit outputs a signal after being stabilized by the Buck circuit and the LLC circuit.
2. The direct current voltage stabilizing device according to claim 1, wherein the direct current voltage stabilizing device comprises a plurality of direct current voltage stabilizing modules, the plurality of direct current voltage stabilizing modules are connected in parallel, an input end of each direct current voltage stabilizing module receives a signal to be stabilized respectively, output ends of the plurality of direct current voltage stabilizing modules connected in parallel output a target voltage stabilizing signal, and the target voltage stabilizing signal is superposition of the stabilized signals output by the plurality of direct current voltage stabilizing modules.
3. The dc voltage stabilizing device according to claim 2, wherein a delay between signals to be stabilized received by two adjacent dc voltage stabilizing modules is related to a signal at an output of at least one of the dc voltage stabilizing modules.
4. A dc voltage regulator as claimed in claim 3, wherein the ratio of the period of the signal at the output of the dc voltage regulator block to the number of the plurality of dc voltage regulator blocks is related to the delay.
5. The dc voltage regulator of claim 4, wherein the delay is equal in magnitude to a ratio of a period of a signal at an output of the dc voltage stabilizing module to a number of the plurality of dc voltage stabilizing modules.
6. The direct current voltage stabilizing device according to claim 2, wherein the input ends of the plurality of parallel direct current voltage stabilizing modules are connected with a rectifying circuit, the rectifying circuit rectifies an external power supply and provides a signal to be stabilized for the plurality of parallel direct current voltage stabilizing modules;
the output ends of the direct current voltage stabilizing modules which are connected in parallel are connected with the power device to provide a target voltage stabilizing signal for the power device so that the power device can generate an electric signal with target alternating current frequency.
7. A high frequency power supply, comprising:
a power device and the dc voltage regulator device according to any one of claims 1 to 6, the dc voltage regulator device being configured to receive a signal to be regulated and output a target voltage regulator signal to the power device, the power device performing power adjustment for the target voltage regulator signal to generate an electrical signal of a target ac frequency;
and the transformer is used for transforming the electric signal of the target alternating-current frequency so that the high-frequency power supply provides an output signal.
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| CN202211555523.3A CN115622378B (en) | 2022-12-06 | 2022-12-06 | High-frequency power supply and direct-current voltage stabilizing device applied to high-frequency power supply |
| CN202310516235.5A CN116526815A (en) | 2022-12-06 | 2022-12-06 | High-frequency power supply and direct-current voltage stabilizing device applied to same |
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| CN201893698U (en) * | 2011-04-08 | 2011-07-06 | 安伏（苏州）电子有限公司 | High-voltage wide-output DC conversion device |
| CN202218217U (en) * | 2011-07-06 | 2012-05-09 | 南京电子计量有限公司 | Low-phase noise source |
| CN103023362A (en) * | 2012-02-27 | 2013-04-03 | 无锡联动太阳能科技有限公司 | Bridgeless inverter circuit and solar bridgeless inverter |
| CN105934043B (en) * | 2016-06-28 | 2017-08-04 | 珠海灿源电子科技有限公司 | A kind of lamp control system |
| KR20180024316A (en) * | 2016-08-29 | 2018-03-08 | (주) 이이시스 | Bi-directional dc-dc convertor |
| CN107453612A (en) * | 2017-08-31 | 2017-12-08 | 上海空间电源研究所 | A kind of efficient DC/DC suitable for wide input range changes power circuit |
| CN207720027U (en) * | 2017-12-29 | 2018-08-10 | 深圳青铜剑科技股份有限公司 | A kind of fuel cell DC-DC converter |
| CN110518797A (en) * | 2018-05-21 | 2019-11-29 | 上海储瑞能源科技有限公司 | A kind of bi-directional DC-DC Width funtion modulation circuit reducing ripple output |
| CN209075956U (en) * | 2018-07-23 | 2019-07-09 | 华北电力大学（保定） | A kind of energy storage type exercycle electromagnetic damper experimental provision |
| CN110719046B (en) * | 2019-09-27 | 2021-03-30 | 中南大学 | Control method for aging power supply device |
| CN110979029B (en) * | 2019-10-30 | 2023-05-05 | 国电南瑞科技股份有限公司 | Charging device and charging method for super-capacitor energy storage type tramcar |
| CN111987917A (en) * | 2020-09-22 | 2020-11-24 | 曲阜师范大学 | Offshore wind power plant direct-current transmission resonant type direct-current converter topological structure and control method |
| CN214480232U (en) * | 2021-01-30 | 2021-10-22 | 广州金升阳科技有限公司 | Staggered LLC current-sharing circuit |
| CN113726153B (en) * | 2021-08-16 | 2024-03-12 | 深圳中堃物联网科技有限公司 | Intelligent voltage regulating method for voltage stabilizing module |
| CN114024442B (en) * | 2021-11-05 | 2024-03-26 | 南京理工大学 | DCDC isolation converter of two-phase staggered four-switch buck-boost integrated LLC |
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