CN116455181A - High-frequency power supply and power device for same - Google Patents
High-frequency power supply and power device for same Download PDFInfo
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- CN116455181A CN116455181A CN202310516249.7A CN202310516249A CN116455181A CN 116455181 A CN116455181 A CN 116455181A CN 202310516249 A CN202310516249 A CN 202310516249A CN 116455181 A CN116455181 A CN 116455181A
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Classifications
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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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/0077—Plural converter units whose outputs are connected in series
-
- 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
-
- 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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
-
- 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
- H02M7/493—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 the static converters being arranged for operation in parallel
-
- 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
- H02M7/5387—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 in a bridge configuration
- H02M7/53871—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 in a bridge configuration with automatic control of output voltage or current
-
- 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 power device for the high-frequency power supply. The power device applied to the high frequency power supply includes: the system comprises a plurality of stages of power modules, a plurality of power modules and a plurality of power modules, wherein each stage of power module is used for generating an electric signal with preset alternating current frequency; the controller is used for controlling the working state of one or more power modules in the multi-stage power modules; the output end is respectively coupled with each stage of the multi-stage power modules and is used for generating an electric signal of target alternating frequency according to the working state of the multi-stage power modules, and the target alternating frequency has a corresponding relation with the preset alternating frequency of each stage of power modules. According to the parallel multi-stage power module, the circuit where each stage of power module is located can be split by designing the parallel multi-stage power module, so that the current stress required to be born by each stage of power module is reduced, the degree of freedom of module model selection is increased, and the circuit cost is reduced.
Description
Description of the division
The present application is a divisional application of the invention patent application with the application number 202211557694.X, the application day 2022, 12/6 and the name of "a high frequency power supply and a power device for a high frequency power supply".
Technical Field
The present disclosure relates to heating technology, and more particularly, to a high-frequency power supply and a power device for the high-frequency power supply.
Background
Heating technology is an important technology in modern industrial production. In some scenarios, a heating system has a need for a high frequency power source that can provide energy to heat a target object.
However, in order to output high power and high frequency electric signals, the current high frequency power supply needs a power device to bear larger current stress, so that the power device has strict requirement on shape selection, the production cost of the power supply is higher, and the power supply is difficult to widely apply and popularize.
Disclosure of Invention
One of the embodiments of the present specification provides a power device applied to a high frequency power source, the device including: the system comprises a plurality of stages of power modules, a plurality of power modules and a plurality of power modules, wherein each stage of power module is used for generating an electric signal with preset alternating current frequency; the controller is used for controlling the working state of one or more power modules in the multi-stage power modules; the output end is respectively coupled with each stage of the multi-stage power modules and is used for generating an electric signal of target alternating frequency according to the working state of the multi-stage power modules, and the target alternating frequency has a corresponding relation with the preset alternating frequency of each stage of power modules.
In some embodiments, the power of the electrical signal generated at the output is the same as the sum of the output powers of the multi-stage power modules.
In some embodiments, the controller controls the multi-stage power modules to be in operation respectively in different time periods, and the sum of the preset ac frequencies of each stage of power modules is the same as the target ac frequency.
In some embodiments, the electrical signals generated by each stage of power modules have the same ac frequency.
In some embodiments, at least two of the electrical signals generated by the multi-stage power module have different alternating current frequencies.
In some embodiments, the preset ac frequency of each stage of power module is not less than 1MHz, and the target ac frequency is not less than 4MHz.
In some embodiments, the power module is a gallium nitride module.
In some embodiments, the gallium nitride module includes four gallium nitride transistors, a capacitor, an inductor, and a resistor, each two gallium nitride transistors forming an output loop, the capacitor being connected in parallel with the two gallium nitride transistors, the inductor and the resistor being disposed on the output loop, the output loop being configured to generate an electrical signal.
In some embodiments, the multi-stage power module is connected to a dc voltage regulator module, the dc voltage regulator module configured to provide a target voltage regulator signal for the multi-stage power module; the output end is connected with the transformer, and the output end provides the electric signal of the target alternating frequency for the transformer so that the transformer transforms the electric signal of the target alternating frequency to generate an output signal.
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, and the power device performs power adjustment on the target voltage stabilizing signal to generate an electric signal with 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.
In some embodiments, the power device is further configured to adjust the target ac frequency of the generated electrical signal when the ratio of the reactive power of the high frequency power source to the output power of the high frequency power source exceeds a preset threshold.
According to the parallel multi-stage power module, the circuit where each stage of power module is located can be split by designing the parallel multi-stage power module, so that the current stress required to be born by each stage of power module is reduced, the degree of freedom of module model selection is increased, and the circuit cost is reduced. Furthermore, the parallel connection among the multi-stage power modules has lower requirement on the size of the inductance in the output loop of the power modules, so that the ripple wave output by the power device can be reduced.
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 power device according to some embodiments of the present description;
fig. 3 is a schematic circuit diagram of a power device according to some embodiments of the present description;
FIG. 4 is a schematic diagram of signal integration according to some embodiments of the present disclosure;
fig. 5 is a schematic circuit configuration diagram of a driving module according to some embodiments of the present specification.
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," "apparatus," "unit" 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 terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they 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 power device may provide an ac electrical signal with a certain frequency, so as to be applied to various situations where electric energy is needed, for example, a power supply situation where the power supply device uses the ac electrical signal to supply power, and another driving situation where the power supply device uses the ac electrical signal to control a state of the device, for example, and further, uses the ac electrical signal to carry data for transmission, for example, a data transmission device.
In some embodiments, the power device may be applied to a high frequency power supply, the high frequency power supply may be applied to a heating system, the power supply may provide electrical energy to transfer thermal energy to the powder to be heated for heating by energy conversion such that the powder melts to a melting point, and the melt becomes supersaturated at the seed crystal site such that the seed crystal grows, thereby obtaining a crystal.
The power device is characterized in that a parallel multistage power module is designed, so that a circuit where each stage of power module is located can be split, current stress required to be born by each stage of power module is reduced, freedom degree of module selection is increased, and circuit cost is reduced. Furthermore, the parallel connection among the multi-stage power modules has lower requirement on the size of the inductance in the output loop of the power modules, so that the ripple wave output by the power device can be reduced.
It should be understood that the application scenarios of the power devices of the present specification are merely some examples or embodiments of the present specification, and that the present specification can also be applied to other similar scenarios according to the present drawings without the exercise of inventive effort by one of ordinary skill in the art.
The power device and the high-frequency power supply according to the embodiments of the present specification will be described in detail with reference to fig. 1 to 5. 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. The high-frequency power supply 100 may be a power supply device that outputs a high-frequency electric signal. In some embodiments, high frequency power supply 100 may provide an output signal that satisfies certain conditions in power and/or frequency. In some embodiments, the high frequency power supply 100 may be used in the heating field to power a heating system.
In some embodiments, as shown in fig. 1, 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. In some embodiments, the dc voltage regulator may include: 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, the multiple dc voltage stabilizing modules may be phase-shifted and connected in parallel, so that each dc voltage stabilizing module may receive a signal to be stabilized with the same waveform and different timing. Because certain noise and/or ripple exists in the signal to be stabilized, in some embodiments, each direct current voltage stabilizing module can filter one signal to be stabilized, filter certain noise and/or ripple, and output the signal after voltage stabilization. In some embodiments, there may be a delay between the signals to be stabilized received by different dc voltage stabilizing modules, so that there may also be the same delay between the stabilized signals output by different dc voltage stabilizing modules. Since the direct current voltage stabilizing module generally adopts a switching device for filtering, a small part of ripple waves 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. In this way, the dc voltage stabilizing device 110 may receive a plurality of signals with time delays through the multi-stage dc voltage stabilizing module, so that the ripples of the signals after voltage stabilization are staggered when being superimposed, and thus the ripples can be eliminated in a counteraction manner, and the stability of the target voltage stabilizing signal is improved.
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 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 stages of power modules operate simultaneously, and the target ac frequency of the electrical signal output by the output terminal may be the same as the preset ac frequency of the electrical signal output by each stage of power modules. For a specific implementation of the power device 120, reference may be made to other matters in the present specification, such as fig. 2-5 and related descriptions.
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). Therefore, the transformer can enlarge the heat dissipation area while reducing the resistance of the coil by arranging the planar coil in the PCB, the skin effect area of the planar coil is close to the cross-section area of the lead, and the skin effect of the planar coil is reduced and the power of the transformer is improved. And, the power consumption of the transformer is much lower than that of a conventional intermediate frequency transformer under the condition of the same power and frequency output. In addition, the transformer 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-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.
An exemplary power device 120 is provided below, detailing a specific implementation of the power device 120.
Fig. 2 is a block diagram of a power device according to some embodiments of the present description. As shown in fig. 2, the power device 120 applied to the high frequency power source may include a multi-stage power module 121, a controller 122, and an output terminal 123.
The multi-stage power module 121 is coupled to the controller 122 and the output 123, respectively. Each of the plurality of power modules 121 is configured to generate an electrical signal at a preset ac frequency.
The power module 121 is a circuit module that performs signal conversion. In some embodiments, the power module 121 may be used to convert an input dc signal into an electrical signal having a preset ac frequency. In some embodiments, power module 121 may include a combination of one or more of the following circuit structures: single-ended inverter circuit, half-bridge inverter circuit, full-bridge inverter circuit, push-pull bridge inverter circuit. For a specific implementation of the power module 121, reference may be made to other descriptions in this specification, such as fig. 3 and related descriptions.
In some embodiments, the multi-stage power module 121 may include a three-stage power module 121, a five-stage power module 121, a ten-stage power module 121, and the like. In some embodiments, the number of stages of the multi-stage power module 121 may be determined based on the desired output power of the power device 120 and/or the target ac frequency. In some embodiments, each of the plurality of stages of power modules 121 may be connected in parallel between each stage of power modules 121. For example, the input terminals of each stage of power modules 121 may be configured to receive a dc signal, and the output loops of each stage of power modules 121 may be coupled to the output terminals 123, thereby implementing the parallel connection of each stage of power modules 121.
Fig. 3 is a schematic circuit diagram of a power device 120 according to some embodiments of the present disclosure. As shown in fig. 3, the multi-stage power module 121 includes power modules 1, 2, …, and N coupled as a total output at output 123. In some embodiments, when the output terminal 123 includes the transformer 124, an output loop of each stage of the power module 121 (e.g., the power module 1, the power module 2, …, the power module N) may be disposed on a primary side of the transformer 124, and the output loop may transmit an electrical signal of a preset ac frequency to the transformer 124 so that the output terminal 123 may generate the electrical signal of the target ac frequency. Further, the electric signal with the target alternating frequency can be used for driving the resonant assembly to generate a corresponding electromagnetic field so as to heat the powder to be heated.
In the embodiment of the present disclosure, the multiple stages of power modules 121 are connected in parallel, so that the circuit where each stage of power module 121 is located is split, the current stress required to be born by each stage of power module 121 is reduced, the degree of freedom of module selection is increased, and the circuit cost is reduced. Furthermore, the parallel connection between the multi-stage power modules 121 requires a lower inductance in the output loop of the power modules 121, thereby reducing ripple of the power modules 121.
In some embodiments, the preset ac frequency may be a frequency corresponding to a duty cycle of the power module 121. The working period may include a stage in which the power module 121 is in an operating state and/or a stage in which the power module 121 is not in an operating state. For example, when the power module 121 is in an operating state within the 1 st s and outputs a sinusoidal electric signal, and is in a non-operating state within the 2 nd s-10 th s, which corresponds to an electric signal with an output level of 0, the duty cycle of the power module 121 is 10s, and the preset ac frequency of the electric signal output by the power module 121 is 0.1Hz.
In some embodiments, the preset ac frequency may be an ac frequency value set according to system requirements. In some embodiments, the preset ac frequency may be a desired ac frequency for each stage of power modules 121.
In some embodiments, the electrical signals generated by each of the multiple stages of power modules 121 may have the same ac frequency. That is, the preset alternating frequency of the plurality of electrical signals may be the same. For example, the multi-stage power module 121 may be a three-stage power module 351, and three electrical signals having the same preset ac frequency, that is, the ac frequencies of the three electrical signals may be the same, respectively, generated by the three-stage power module 351.
In some embodiments, at least two of the electrical signals generated by the multi-stage power module 121 have different ac frequencies. That is, the preset alternating frequency of the plurality of electrical signals may be different. For example, the multi-stage power module 121 may be four-stage power modules 121, and the four-stage power modules 121 respectively generate four electrical signals having a preset ac frequency. Of the four electrical signals, the alternating current frequencies of the two electrical signals generated by the two power modules 121 (e.g., the first-stage power module and the second-stage power module) may be different, the alternating current frequencies of the three electrical signals generated by the three power modules 121 (e.g., the first-stage power module, the second-stage power module and the fourth-stage power module) may be different, or the alternating current frequencies of the four electrical signals may be different.
It should be noted that, in some embodiments, in a case where there are at least two electrical signals having different ac frequencies, there may be at least two electrical signals having the same ac frequency in the electrical signals generated by the multi-stage power module 121. That is, the plurality of electric signals may have the same preset alternating current frequency or may have different preset alternating current frequencies. Continuing with the above description of the four-stage power module 121 as an example, among the four electrical signals, the alternating current frequencies of the two electrical signals generated by the first-stage power module and the second-stage power module may be different, and the alternating current frequencies of the three electrical signals generated by the second-stage power module, the third-stage power module, and the fourth-stage power module may be the same.
The target ac frequency may be a frequency value set by the power device 120 according to the system requirements, which is equivalent to the frequency of the electromagnetic field generated by the resonant assembly. In some embodiments, the target ac frequency may be a desired ac frequency of the power device 120. Because the power modules 121 of each stage are connected in parallel, in some embodiments, the target ac frequency corresponds to the preset ac frequency of each power module of each stage. The preset ac frequency of the electric signal generated by each stage of the power module 121 may be determined according to the set target ac frequency. In some embodiments, the preset ac frequency of each of the multi-stage power modules 121 may be not less than 1MHz, and the target ac frequency is not less than 4MHz.
In some embodiments, power module 121 may be a gallium nitride power module. The gallium nitride power module may include a gallium nitride transistor, among others. Two materials (such as AlGaN and GaN) with different forbidden bandwidths are arranged in the GaN transistor, and conduction is performed through a two-dimensional electron gas (2 DEG) formed by the piezoelectric effect of the two materials at an interface. Compared with the traditional silicon transistor, the two-dimensional electron gas of the gallium nitride transistor needs to conduct in the environment of high-concentration electrons, so that the gallium nitride transistor is difficult to generate the condition that minority carrier recombination leads to reverse recovery of the transistor, and has higher stability.
In addition, because the gallium nitride material has larger forbidden bandwidth and higher critical field intensity, the power semiconductor (such as a gallium nitride transistor) manufactured based on the gallium nitride material has the characteristics of high voltage resistance, low on-resistance, small parasitic parameter and the like. When the gallium nitride transistor is applied to the field of switching power supplies, the loss of a power device can be reduced, and the working frequency and reliability of the power device can be improved, so that the performances of the switching power supply, such as efficiency, power density, reliability and the like, are improved.
In some embodiments, output 123 may be coupled to each of the multiple stages of power modules 121 separately, for generating an electrical signal of a target ac frequency according to the operating state of the multi-stage power module 121. At this time, the target ac frequency has a correspondence with the preset ac frequency of each stage of the power module. In some embodiments, output 123 may include a signal aggregation component that may be adapted to the electrical signal output by multi-stage power module 121. As shown in fig. 3, the signal aggregation component may be a transformer 124, the primary side of the transformer 124 is provided with an output loop of each stage of the power module 121 (e.g. the power module 1, the power module 2, the …, the power module N), and the transformer 124 may integrate the electrical signals of a plurality of preset ac frequencies from the multi-stage power module 121 to generate the electrical signal of the target ac frequency at the output side of the transformer 124. That is, the transformer 124 may integrate a plurality of electrical signals into one electrical signal.
The controller may be an electronic device that processes data. In some embodiments, the controller 122 may be used to control the operating state of one or more of the power modules 121 in the multi-stage power module 121. For example, the controller 122 may control on and off of the switching elements in the power module 121 to cause the power module 121 to generate an ac signal. In some embodiments, the controller 122 may adjust the switching frequency of the on and off of the switching elements so that the ac signal generated by each power module 121 has a preset ac frequency. For example, the controller 122 may control on and off of gallium nitride transistors in the gallium nitride module and adjust the switching frequency of on and off so that the gallium nitride module generates an electrical signal having a preset alternating frequency.
The operation state of the multi-stage power modules 121 may refer to an operation state of each of the multi-stage power modules 121. In some embodiments, when the power module 121 is in an operating state, the power module 121 may output an electrical signal, and when the power module 121 is in an inactive state, the power module 121 does not output an electrical signal or outputs an electrical signal with a level of 0. In some embodiments, the generating the electrical signal at the preset ac frequency by the power module 121 includes: the power module 121 generates an electrical signal in an operating state, and does not output or outputs an electrical signal of level 0 in a non-operating state. That is, the power module 121 may generate an electrical signal of a preset ac frequency when it is switched between an active and an inactive state.
In some embodiments, the operating state of the power module 121 may be controlled by the controller 122. The controller 122 may control each of the multiple power modules 121 to be in an operating state at the same time, may control each of the multiple power modules 121 to be in an operating state at a time, may control some of the multiple power modules 121 to be in an operating state at the same time, and may control some of the multiple power modules 121 to be in an operating state at a time.
Taking fig. 3 as an example, in some embodiments, the controller 122 may control the multi-stage power modules 121 to operate simultaneously. For example, the controller 122 may control the power module 1, the power module 2, …, and the power module N to be in an operating state at the same time, or may control the power module 1, the power module 2, …, and the power module N to be in an inactive state at the same time.
In some embodiments, the controller 122 may control the multi-stage power module 121 to operate time-division. For example, the controller 122 may control the power module 1 to be in an active state for a first period of time (e.g., 1 s) and to be in an inactive state for the remaining period of time. The controller 122 may control the power module 2 to be in an active state for a second period of time (e.g., 2 s) and to be in an inactive state for the remaining period of time. The controller 122 may control the power module N to be in an active state during an nth period (e.g., during an Ns) and to be in an inactive state during the remaining periods.
In some embodiments, the controller 122 may control some of the multi-stage power modules 121 to operate simultaneously, and some of the power modules 121 to operate time-division. For example, the controller 122 may control the power modules 1 and 2 to be in an active state for a first period of time (e.g., 1 s) and to be in an inactive state for the remaining period of time. The controller 122 may control the power module 3 and the power module 4 to be in an active state during a first period of time (e.g., during the 2 nd s) and to be in an inactive state during the remaining period of time. In this way, the power module 1 and the power module 2 can work simultaneously, the power module 3 and the power module 4 can work simultaneously, and the combination of the power module 1 and the power module 2 and the combination of the power module 3 and the power module 4 can work in a time sharing manner, so that the staggered parallel connection of the multi-stage power modules 121 is realized.
It is to be understood that the number of stages of the multi-stage power module 121 and the duration of the multiple time periods are merely examples, and the number of stages of the multi-stage power module 121 may be determined according to the desired output power of the power device 120 and/or the target ac frequency, and the duration of the multiple time periods may also be determined according to the signal period, and specific implementations may refer to other related descriptions in this specification.
In some embodiments, the power of the electrical signal generated at output 123 may be the same as the sum of the output powers of multi-stage power module 121. That is, the output power of the power device 120 may be the same as the sum of the output powers of the multi-stage power modules 121. Further, in some embodiments, the power of the electrical signal generated by the output terminal 123 may be the same as the sum of the output powers of the power modules 121 in operation. Taking fig. 3 as an example, when the power modules 1 and 2 are in an operating state and the remaining power modules (e.g. the power modules 3, …, and N) are in an inactive state, the power of the electric signal generated by the output terminal 123 is the same as the sum of the output powers of the power modules 1 and 2.
In the embodiment of the present disclosure, in the case where the desired output power of the power device 120 is unchanged, by setting the multiple power modules 121 in parallel, the output power that needs to be achieved by each power module 121 may be reduced, thereby increasing the degree of freedom of the selection type.
In some embodiments, the controller 122 may control each of the multi-stage power modules 121 to be separately in operation for different periods of time. At this time, the sum of the preset ac frequencies of the power modules 121 at each stage is the same as the target ac frequency.
In some embodiments, the different time periods may refer to evenly distributed time periods, e.g., evenly distributed time periods of 1 μs, 100ms, 1s in duration. In some embodiments, the different time periods may also refer to non-uniformly distributed time periods. In some embodiments, each of the multiple power modules 121 may be in operation for different periods of time. That is, each stage of the power modules 121 in the multi-stage power module 121 can work in a time-sharing manner, and output electrical signals in different time periods respectively, and the electrical signals can be output in the time periods through the integration of the electrical signals by the output end 123, so that the integration of the ac frequency is achieved, and the sum of the preset ac frequencies is the same as the target ac frequency.
Fig. 4 is a schematic diagram of signal integration according to some embodiments of the present disclosure. As shown in fig. 4, when the first stage power module, the second stage power module, and the third stage power module are in the working states in the first time period T1, the second time period T2, and the third time period T3, respectively, the electrical signal 1 may be a preset ac frequency output by the first stage power moduleThe electric signal 2 can be the electric signal with preset alternating frequency outputted by the second-stage power module >The electric signal 3 can be the electric signal with preset alternating frequency outputted by the third-stage power module>The electric signal 4 may be the electric signal with the target alternating frequency outputted by the output terminal 123>Is a function of the electrical signal of the (a). The output 123 may integrate the electrical signals 1, 2 and 3 to obtain the electrical signal 4. The waveforms in electrical signal 4 are the superposition of electrical signals 1-3 and can be considered as if the waveforms of electrical signals 1-3 were similar or identicalThe amplitude of the electrical signal 4 is repeatedly varied 3 times over time in a period T, i.e. the period of the electrical signal 4 may be +.>The target ac frequency may be +.>That is, the sum of preset alternating current frequencies of each power module (e.g.)>) Frequency +.>The same applies.
In the embodiment of the present disclosure, under the condition that the target ac frequency is unchanged, the ac frequency of the signal generated by the multi-stage power module 121 can be overlapped by the time-sharing operation of the multi-stage power module 121, so as to reduce the requirement on the preset ac frequency of each stage of power module 121, thereby increasing the degree of freedom of model selection and packaging, and facilitating the management and maintenance of devices. In addition, the multistage power module 121 can reduce the ripple frequency in the power module 121 by increasing the stage number, and further reduce the overall ripple of the power device.
In some embodiments, the power device 120 may be provided with four-stage power modules 121, where the preset ac frequency of each of the four-stage power modules 121 may be not lower than 1MHz, and the target ac frequency is not lower than 4MHz.
In some embodiments, each of the multiple power modules 121 may also operate simultaneously, and the target ac frequency may be the same as the preset ac frequency of each of the multiple power modules when each of the multiple power modules is simultaneously in an operating state. For example, when the first stage power module, the second stage power module, and the third stage power module are simultaneously in the working state in the first period of time and are simultaneously in the non-working state in the second period of time, the amplitude of the electric signal generated by the output end 123 repeatedly changes with time in a similar or identical manner to that of the electric signal output by the first stage power module, the second stage power module, and the third stage power module, that is, the target ac frequency may be the same as the preset ac frequency of each stage power module.
In some embodiments, each of the multiple power modules 121 may include four gallium nitride transistors, one capacitor, one inductor, one resistor. The two gallium nitride transistors form an output loop, a capacitor is connected with the two gallium nitride transistors in parallel, an inductor and a resistor are arranged on the output loop, and the output loop is used for generating an electric signal. With continued reference to fig. 3, taking a first-stage gallium nitride module (e.g., power module 1 of fig. 3) as an example, the first-stage gallium nitride module may include gallium nitride crystal VD 11 Gallium nitride crystal VD 12 Gallium nitride crystal VD 13 Gallium nitride crystal VD 14 Capacitance C 1 Inductance L 1 And resistance R 1 Wherein, gallium nitride crystal VD 11 Gallium nitride crystal VD 14 Can form an output loop, and the gallium nitride crystal VD 12 Gallium nitride crystal VD 13 An output loop may be constructed. Capacitor C 1 With two GaN transistors (e.g. with GaN crystal VD 11 Gallium nitride crystal VD 14 Or with gallium nitride crystal VD 12 Gallium nitride crystal VD 13 ) Parallel, inductance L 1 And resistance R 1 Is disposed on the output loop. The output loop 1 may in turn be: gallium nitride crystal VD 11 Inductance L 1 Resistance R 1 Gallium nitride crystal VD 14 The output loop 2 may in turn be: gallium nitride crystal VD 12 Resistance R 1 Inductance L 1 Gallium nitride crystal VD 13 So that the electric signals generated by the output loops (such as the output loop 1 and the output loop 2) formed by the two groups of gallium nitride crystals have different directions.
With continued reference to fig. 3, the controller may first control the gallium nitride crystal VD when the gallium nitride module is in operation 11 Gallium nitride Crystal VD 14 Conduction and control of gallium nitride crystal VD 12 Gallium nitride crystal VD 13 Turn off, make capacitor C 1 The output circuit 1 is supplied with a direct current signal Udc, and the output circuit 1 generates a forward electrical signal u on the primary side of the transformer 124 1 . Re-controlling gallium nitride crystal VD 12 Gallium nitride crystal VD 13 Conduction and control of gallium nitride crystal VD 11 Gallium nitride crystal VD 14 Turn off, make capacitor C 1 Providing the output circuit 2 with a direct current signal Udc, the output circuit 2 generates a negative electrical signal u on the primary side of the transformer 124 1 So that the gallium nitride module generates an alternating current signal u 1 。
In some embodiments, the transformer 124 may couple the electrical signals u generated by the plurality of gallium nitride modules by electromagnetic induction 1 Electric signal u 2 … and electric signal u N Converted into series electric signals u' 1 Electric signal u' 2 …, electric signal u' N Thereby generating an electric signal u after integration 0 . The structure and working principle of the remaining gallium nitride modules may be referred to the above description of the first-stage gallium nitride module, and will not be described herein.
It should be noted that, the transformer 124 is structurally and functionally different from the transformer 130 described above, the primary side of the transformer 124 is connected to the multi-stage power module 121, the secondary side may be connected to the transformer 130, and the transformer 124 may be used to integrate a plurality of ac signals. 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 controller may send a modulation signal to the drive module so that the drive module may control the switching on and off of the switching element. Further, in some embodiments, one driving module may control two switching elements in the same output loop, so that the two switching elements may be turned on and off at the same time.
Fig. 5 is a schematic circuit configuration diagram of a driving module according to some embodiments of the present specification. In some embodiments, as shown in FIG. 5, the drive module may include a drive chip U6, which may be electrically powered, respectivelyResistors R67 and R68 (e.g., 300 ohm resistors) receive two modulation signals PWM0 and PWM1 from the controller and are connected to the high input terminal HIN and the low input terminal LIN of the driving chip U6, respectively, and the high output terminal HO and the low output terminal LO of the driving chip U6 pass through resistors R29 and R33 (e.g., 33 ohm resistors) and MOS transistors Q1 and Q2 (gallium nitride crystal VD shown in FIG. 3) 11 Gallium nitride crystal VD 14 Or gallium nitride crystal VD 12 Gallium nitride crystal VD 13 ) The power output end VS of the driving chip U6 provides the signal M1 and is connected with the source electrode of Q1 and the drain electrode of Q2 at the same time, the power supply receiving end VB of the driving chip U6 receives +15v voltage by forward conduction of the diode D4, and the power supply input end VCC of the driving chip U6 receives +15v voltage. Capacitor C16 (e.g., a capacitor having a capacitance of 3.3 uF) is connected at one end to the cathode of diode D4 and at the other end to the VS end of U6. COM ground of U6.
In some embodiments, the driving chip U6 may control the on and off of the MOS transistors Q1 and Q2 according to the modulation signals PWM0 and PWM 1. That is, the driving chip U6 can control the gallium nitride crystal VD shown in fig. 3 according to the modulation signals PWM0 and PWM1 11 Gallium nitride crystal VD 14 Or gallium nitride crystal VD 12 Gallium nitride crystal VD 1 Is turned on and off.
In some embodiments, the switching element can be operated in a more ideal switching state by adopting a driving module with good performance, so that the switching time is shortened, and the switching loss is reduced. In some embodiments, some protection circuits may be further disposed in the driving module, so that operation efficiency, reliability and safety of the system may be effectively improved.
In some embodiments, the power device 120 may adjust the target ac frequency of the electrical signal it outputs according to a change in the scene. The scene change here may include a change in load that the power device drives, a change in temperature of an environment in which the power device is located, or a user adjustment of a parameter related to the power device 120. For example only, the power device 120 may be used to adjust the target ac frequency of the generated electrical signal when the ratio of the reactive power of the high frequency power supply 100 to the output power of the high frequency power supply 100 exceeds a preset threshold. For example, the controller 122 may adjust the preset ac frequency of the electrical signal generated by the power module 121 when the ratio of the reactive power of the high frequency power source 100 to the output power of the high frequency power source 100 exceeds a preset threshold. The output power of the high frequency power supply 100 may include reactive power and active power, among others. The reactive power of the high frequency power source 100 may be power consumed by devices (e.g., the power device 120, the transformer 130, the resonance assembly 200, etc.) that transfer electric energy using the principle of electromagnetic induction, i.e., power consumed by the transfer electric energy.
In some embodiments, reactive power may be affected by the material of the powder to be heated. Since the powder to be heated can be used as the load of the heating device, the frequencies of the powder to be heated of different materials and the heating device (hereinafter referred to as resonance frequencies) are also different. When the material of the powder to be heated is changed, a difference exists between the operating frequency of the heating device (or the operating frequency of the high-frequency power supply 100) and the resonant frequency, so that the power consumed by transmitting the electric energy (such as the reactive power of the high-frequency power supply 100) is increased, thereby reducing the active power of the heating device and reducing the heating effect of the heating device on the powder to be heated. Wherein, the operating frequency of the high frequency power supply 100 and the operating frequency of the heating device are controlled by the target alternating frequency of the electric signal output by the power device 120. In some embodiments, the ratio of the reactive power of the high frequency power supply 100 to the output power of the high frequency power supply 100 may be related to the heating effect of the heating device on the powder to be heated. Illustratively, the preset threshold may be within 5% -15%. When the ratio of the reactive power of the high-frequency power supply 100 to the output power of the high-frequency power supply 100 exceeds the preset threshold, it may be determined that the heating effect of the heating device on the powder to be heated is poor, and the controller 122 may adjust the preset ac frequency of the electric signal generated by the power module 121 to achieve the purpose of adjusting the target ac frequency of the electric signal, so that the working frequency of the heating device approaches or reaches the resonant frequency, and the reactive power of the high-frequency power supply 100 is reduced.
In some embodiments, the multi-stage power module 121 may be connected to a dc voltage regulator module of the dc voltage regulator 110, which may be used to provide a target voltage regulator signal for the multi-stage power module; an output terminal 123 may be connected to the transformer 130, the output terminal 123 providing an electrical signal of the target ac frequency to the transformer 130, so that the transformer 130 transforms the electrical signal of the target ac frequency to generate an output signal.
Possible benefits of embodiments of the present description include, but are not limited to:
by designing the parallel multistage power modules, the circuit where each stage of power module is located can be shunted, the current stress required to be born by each stage of power module is reduced, the degree of freedom of module selection is increased, and the circuit cost is reduced. Furthermore, the parallel connection among the multi-stage power modules has lower requirement on the size of the inductance in the output loop of the power modules, so that the ripple wave output by the power device can be reduced.
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 "one embodiment," "an embodiment," and/or "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 "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification 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 describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for a 20% variation. 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 (11)
1. A power device for use in a high frequency power supply, comprising:
The system comprises a plurality of stages of power modules, a plurality of power modules and a plurality of power modules, wherein each stage of power module is used for generating an electric signal with preset alternating current frequency;
the controller is used for controlling the working state of one or more power modules in the multi-stage power modules;
the output end is respectively coupled with each stage of the multi-stage power module and is used for generating an electric signal of a target alternating frequency according to the working state of the multi-stage power module;
the controller controls the multi-stage power modules to be in working states respectively in different time periods, and at least one power module in a working state and at least one functional module in a non-working state exist in the multi-stage power modules in the same time period.
2. The power device of claim 1, wherein the power of the electrical signal generated at the output is the same as the sum of the output powers of the multi-stage power modules.
3. The power device of claim 1, wherein a sum of the preset ac frequencies of each stage of power modules is the same as the target ac frequency.
4. The power device of claim 1, wherein the electrical signals generated by each stage of power modules have the same ac frequency.
5. The power device of claim 1, wherein at least two of the electrical signals generated by the multi-stage power module have different ac frequencies.
6. The power device of claim 1, wherein the preset ac frequency of each stage of power module is not less than 1MHz, and the target ac frequency is not less than 4MHz.
7. The power device of claim 6, wherein the power module is a gallium nitride module.
8. The power device of claim 7, wherein the gallium nitride module comprises four gallium nitride transistors, a capacitor, an inductor, and a resistor, each two gallium nitride transistors forming an output loop, the capacitor being connected in parallel with the two gallium nitride transistors, the inductor and the resistor being disposed on the output loop, the output loop being configured to generate the electrical signal.
9. The power device of claim 8, wherein gallium nitride transistors in different output loops are alternately turned on and off when the gallium nitride module is in an operational state.
10. The power device of claim 1, wherein the multi-stage power module is connected to a dc voltage regulator module, the dc voltage regulator module configured to provide a target voltage regulator signal to the multi-stage power module;
The output end is connected with the transformer, and the output end provides the electric signal of the target alternating frequency for the transformer so that the transformer transforms the electric signal of the target alternating frequency to generate an output signal.
11. A high frequency power supply, comprising:
a power device as claimed in any one of claims 1 to 10;
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, and the power device performs power adjustment on the target voltage stabilizing signal 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.
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| CN203827197U (en) * | 2014-05-05 | 2014-09-10 | 国家电网公司 | Modular H bridge cascaded multilevel mutually-balanced electric power electronic transformer |
| CN108281979A (en) * | 2017-10-17 | 2018-07-13 | 天津铁科运通轨道技术有限公司 | A kind of electronics feedback load circuit of suitable low-voltage, high-current input |
| CN108199602B (en) * | 2018-01-09 | 2020-10-30 | 青岛大学 | Multi-winding time-sharing power supply forward direct current chopper type single-stage multi-input high-frequency chain inverter |
| CN109768569A (en) * | 2018-12-27 | 2019-05-17 | 陕西科技大学 | A kind of more gird-connected inverter parallel running systems |
| CN213027829U (en) * | 2020-08-19 | 2021-04-20 | 武汉冠优新能源科技有限公司 | Double-transformer push-pull circuit suitable for inverter |
| CN112054691B (en) * | 2020-09-04 | 2021-07-20 | 武汉大学 | Single-stage voltage-regulating conversion circuit sharing rectification structure and control method |
| CN214337546U (en) * | 2020-11-24 | 2021-10-01 | 厦门市三安集成电路有限公司 | Gallium nitride transistor half-bridge circuit with short-circuit protection |
| CN113595425A (en) * | 2021-09-09 | 2021-11-02 | 上海电动工具研究所（集团）有限公司 | Five-level inverter power supply based on H-bridge cross carrier magnetic coupling control |
| CN114583968A (en) * | 2022-03-17 | 2022-06-03 | 杨凌职业技术学院 | Air conditioner inverter topology for electric rail locomotive and control method |
| CN115208229A (en) * | 2022-08-01 | 2022-10-18 | 中国科学院电工研究所 | Inductive energy storage pulse generator |
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2022
- 2022-12-06 CN CN202310516249.7A patent/CN116455181A/en active Pending
- 2022-12-06 CN CN202211557694.XA patent/CN115642783B/en active Active
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| CN115642783A (en) | 2023-01-24 |
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