CN113258790B - Converter control method and related device - Google Patents
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- CN113258790B CN113258790B CN202110799305.3A CN202110799305A CN113258790B CN 113258790 B CN113258790 B CN 113258790B CN 202110799305 A CN202110799305 A CN 202110799305A CN 113258790 B CN113258790 B CN 113258790B
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- 238000004590 computer program Methods 0.000 claims description 17
- 239000003990 capacitor Substances 0.000 description 30
- 230000001276 controlling effect Effects 0.000 description 17
- 230000010355 oscillation Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000010363 phase shift Effects 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 230000001629 suppression Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
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- 238000013461 design Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
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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
- H02M3/3353—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 at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
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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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
- H02M1/0022—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters the disturbance parameters being input voltage fluctuations
Abstract
The embodiment of the application provides a converter control method and a related device, wherein the method comprises the following steps: acquiring an input voltage and an output voltage of the double-active-bridge converter in a first working period; if the working state of the double-active-bridge converter in the first working period is determined not to be the preset working state according to the input voltage and the output voltage, acquiring K second working frequencies of the double-active-bridge converter in K continuous working periods, and acquiring K reference output voltages of the double-active-bridge converter in the K continuous working periods; determining a third working frequency of a second working period according to the K second working frequencies and the K reference output voltages, wherein the second working period is a working period after the last working period in the K continuous working periods; according to the third working frequency, the double-active-bridge converter is controlled in the second working period, and the characteristic of the output current of the double-active-bridge converter can be improved.
Description
Technical Field
The present application relates to the field of circuit control technologies, and in particular, to a converter control method and a related apparatus.
Background
With the rapid development of new energy automobiles and energy storage, bidirectional power electronic converters become more and more important, and bidirectional DC/DC converters are core components of the bidirectional power electronic converters. The double-active-bridge converter has the advantages of electrical isolation, high power density, wide voltage regulation range, soft switching and the like, and can be applied to an energy storage system in a wider range. The most remarkable characteristic of the double-active-bridge converter compared with other converters of the same type is that the voltage regulating range is wide, the converter can output the maximum current according to the design under the condition of high-voltage input or high-voltage output, but the output current of the converter is always reduced under the conditions of low-voltage input and low-voltage output.
Disclosure of Invention
The embodiment of the application provides a converter control method and a related device, which can improve the characteristics of output current of a double-active-bridge converter.
A first aspect of an embodiment of the present application provides a converter control method, including:
acquiring an input voltage and an output voltage of the double-active-bridge converter in a first working period;
determining whether the working state of the double-active-bridge converter in a first working period is a preset working state or not according to the input voltage and the output voltage;
if the working state of the double-active-bridge converter in a first working period is not a preset working state, acquiring K second working frequencies of the double-active-bridge converter in K continuous working periods, and acquiring K reference output voltages of the double-active-bridge converter in the K continuous working periods, wherein the first working period is a first working period of the K continuous working periods;
determining a third working frequency of a second working period according to the K second working frequencies and the K reference output voltages, wherein the second working period is a working period after the last working period in the K continuous working periods;
controlling the dual active bridge converter in the second working period according to the third working frequency;
if the working state of the double-active-bridge converter in the first working period is a preset working state, determining a first working frequency of the double-active-bridge converter according to the input voltage and the output voltage, and controlling the double-active-bridge converter in the first working period and the second working period according to the first working frequency;
the obtaining K second operating frequencies of the dual-active-bridge converter in K consecutive operating cycles includes:
acquiring input voltage and output voltage of a target working period, wherein the target working period is any one of the K continuous working periods;
acquiring a target voltage, wherein the target voltage is the maximum value of the input voltage and the output voltage of the target working period;
determining the target frequency according to the target voltage and a preset frequency coefficient;
and acquiring the working frequency of each working period in the K continuous working periods by the method for acquiring the target frequency until the K second working frequencies are obtained.
In this example, by obtaining an input voltage and an output voltage of a dual active bridge converter in a first working period, determining whether a working state of the dual active bridge converter in the first working period is a preset working state according to the input voltage and the output voltage, obtaining K second working frequencies of the dual active bridge converter in K consecutive working periods if the working state of the dual active bridge converter in the first working period is not the preset working state, and obtaining K reference output voltages of the dual active bridge converter in the K consecutive working periods, where the first working period is a first working period of the K consecutive working periods, determining a third working frequency of the second working period according to the K second working frequencies and the K reference output voltages, the second working period is a working period after the last working period in the K consecutive working periods, so that when the dual-active-bridge converter is in the preset working state, K second working frequencies of the dual-active-bridge converter in the K consecutive working periods and K reference output voltages are used for determining a third working frequency of the second working period, the third working frequency can be determined according to the working frequencies and the output voltages in the K consecutive periods, and the output current can be adjusted by controlling according to the third working frequency, so that the output current of the dual-active-bridge converter can be increased; if the working state of the double-active-bridge converter in the first working period is a preset working state, determining a first working frequency of the double-active-bridge converter according to the input voltage and the output voltage, and controlling the double-active-bridge converter in the first working period and the second working period according to the first working frequency; obtaining an input voltage and an output voltage of a target working period, wherein the target working period is any one of the K continuous working periods; acquiring a target voltage, wherein the target voltage is the maximum value of the input voltage and the output voltage of the target working period; determining the target frequency according to the target voltage and a preset frequency coefficient; the working frequency of each working period in the K continuous working periods is obtained by the method for obtaining the target frequency, and the K second working frequencies of the double-active-bridge converter in the K continuous working periods are obtained until the K second working frequencies are obtained, so that the target frequency is determined according to the maximum value of the input voltage and the output voltage by obtaining the input voltage and the output voltage of each period in the K continuous working periods, the target frequency can be determined through the input voltage or the input voltage in a feedback mode, and the control accuracy of the target converter is improved.
With reference to the first aspect, in a possible implementation manner, the determining a third operating frequency of a second operating cycle according to the K second operating frequencies and the K reference output voltages includes:
determining K frequency variation quantities according to the K second working frequencies, wherein the frequency variation quantities are variation quantities of the second working frequencies relative to a preset working frequency;
determining K voltage variation quantities according to the K reference output voltages, wherein the voltage variation quantities are the variation quantities of the reference output voltages relative to a preset output voltage;
if K frequency variation with K voltage variation accords with the preset condition, then according to K reference output voltage with the third operating frequency of second duty cycle is confirmed to the frequency coefficient of predetermineeing, the preset condition is that K frequency variation has N frequency variation at least and is greater than and predetermines frequency variation just K voltage variation has N voltage variation at least and is greater than and predetermines voltage variation.
In this example, when the K frequency variations and the K voltage variations meet the preset condition, the third operating frequency of the second operating period is determined according to the K reference output voltages and the preset frequency coefficient, so that the condition of loop oscillation can be reduced, and the stability of the dual-active-bridge converter is improved.
With reference to the first aspect, in a possible implementation manner, the determining a third operating frequency of the second duty cycle according to the K reference output voltages and the preset frequency coefficient includes:
obtaining the mean voltage of the K reference output voltages;
and determining a third working frequency of the second working period according to the average voltage and the preset frequency coefficient.
With reference to the first aspect, in a possible implementation manner, the number of the second duty cycles is M, and the M second duty cycles are consecutive duty cycles, where the method further includes:
controlling the dual-active-bridge converter in the M second working periods according to the third working frequency;
acquiring the input voltage and the output voltage of the last working cycle in the M second working cycles;
and determining the working frequency of a third working period according to the input voltage and the output voltage, wherein the third working period is a working period after the last working period in the M second working periods.
In this example, by setting M consecutive second duty cycles, the occurrence of loop oscillation in the dual-active bridge converter can be further reduced, and the stability is improved.
With reference to the first aspect, in a possible implementation manner, if the K frequency variations and the K voltage variations do not meet a preset condition, the operating frequency of the second duty cycle is determined according to the input voltage and the output voltage of the second duty cycle.
With reference to the first aspect, in one possible implementation manner, the determining, according to the input voltage and the output voltage, whether an operating state of the dual-active-bridge converter in a first operating period is a preset operating state includes:
if the input voltage and the output voltage are both smaller than a preset voltage threshold value, determining that the working state of the double-active-bridge converter in a first working period is a preset working state;
and if at least one of the input voltage and the input voltage is not smaller than the preset voltage threshold, determining that the working state of the double-active-bridge converter in the first working period is not the preset working state.
A second aspect of an embodiment of the present application provides a converter control apparatus, including:
the first acquisition unit is used for acquiring the input voltage and the output voltage of the double-active-bridge converter in a first working period;
the first determining unit is used for determining whether the working state of the double-active-bridge converter in a first working period is a preset working state or not according to the input voltage and the output voltage;
a second obtaining unit, configured to obtain, if a working state of the dual-active-bridge converter in a first working period is not a preset working state, K second working frequencies of the dual-active-bridge converter in K consecutive working periods, and K reference output voltages of the dual-active-bridge converter in the K consecutive working periods, where the first working period is a first working period of the K consecutive working periods;
a second determining unit, configured to determine a third operating frequency of a second operating cycle according to the K second operating frequencies and the K reference output voltages, where the second operating cycle is an operating cycle after a last operating cycle of the K consecutive operating cycles;
the first control unit is used for controlling the double-active-bridge converter in the second working period according to the third working frequency;
the second control unit is used for determining a first working frequency of the double-active-bridge converter according to the input voltage and the output voltage and controlling the double-active-bridge converter in the first working period and the second working period according to the first working frequency if the working state of the double-active-bridge converter in the first working period is a preset working state;
in the aspect of obtaining K second operating frequencies of the dual active bridge converter in K consecutive operating cycles, the second obtaining unit is configured to:
acquiring input voltage and output voltage of a target working period, wherein the target working period is any one of the K continuous working periods;
acquiring a target voltage, wherein the target voltage is the maximum value of the input voltage and the output voltage of the target working period;
determining the target frequency according to the target voltage and a preset frequency coefficient;
and acquiring the working frequency of each working period in the K continuous working periods by the method for acquiring the target frequency until the K second working frequencies are obtained.
With reference to the second aspect, in one possible implementation manner, the second determining unit is configured to:
determining K frequency variation quantities according to the K second working frequencies, wherein the frequency variation quantities are variation quantities of the second working frequencies relative to a preset working frequency;
determining K voltage variation quantities according to the K reference output voltages, wherein the voltage variation quantities are the variation quantities of the reference output voltages relative to a preset output voltage;
if K frequency variation with K voltage variation accords with the preset condition, then according to K reference output voltage with the third operating frequency of second duty cycle is confirmed to the frequency coefficient of predetermineeing, the preset condition is that K frequency variation has N frequency variation at least and is greater than and predetermines frequency variation just K voltage variation has N voltage variation at least and is greater than and predetermines voltage variation.
With reference to the second aspect, in a possible implementation manner, in the aspect that the third operating frequency of the second operating period is determined according to the K reference output voltages and the preset frequency coefficient, the second determining unit is configured to:
obtaining the mean voltage of the K reference output voltages;
and determining a third working frequency of the second working period according to the average voltage and the preset frequency coefficient.
With reference to the second aspect, in a possible implementation manner, the number of the second duty cycles is M, where M second duty cycles are consecutive duty cycles, and the apparatus is further configured to:
controlling the dual-active-bridge converter in the M second working periods according to the third working frequency;
acquiring the input voltage and the output voltage of the last working cycle in the M second working cycles;
and determining the working frequency of a third working period according to the input voltage and the output voltage, wherein the third working period is a working period after the last working period in the M second working periods.
With reference to the second aspect, in a possible implementation manner, if the K frequency variations and the K voltage variations do not meet a preset condition, the second determining unit determines the operating frequency of the second duty cycle according to the second duty cycle input voltage and the second duty cycle output voltage.
With reference to the second aspect, in one possible implementation manner, the determining unit is configured to:
if the input voltage and the output voltage are both smaller than a preset voltage threshold value, determining that the working state of the double-active-bridge converter in a first working period is not a preset working state;
and if at least one of the input voltage and the input voltage is not less than the preset voltage threshold, determining that the working state of the dual-active-bridge converter in a first working period is a preset working state.
A third aspect of embodiments of the present application provides a terminal, including a processor and a memory, where the processor and the memory are connected to each other, where the memory is used to store a computer program, and the computer program includes program instructions, and the processor is configured to call the program instructions to execute the step instructions in the first aspect of embodiments of the present application.
A fourth aspect of embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform part or all of the steps as described in the first aspect of embodiments of the present application.
A fifth aspect of embodiments of the present application provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps as described in the first aspect of embodiments of the present application. The computer program product may be a software installation package.
These and other aspects of the present application will be more readily apparent from the following description of the embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dual active bridge converter according to an embodiment of the present application;
FIG. 2 is a flow chart illustrating a method for controlling a converter according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an inverter control device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In order to better understand the converter control method according to the embodiment of the present application, a circuit configuration of a dual active bridge converter to which the converter control method is applied will be briefly described below. Referring to fig. 1, fig. 1 is a schematic structural diagram of a dual active bridge converter according to an embodiment of the present disclosure. As shown in fig. 1, the dual active bridge converter includes a first bridge unit 10, a second bridge unit 20, a transformer 30, a first filter capacitor Cin, and a second filter capacitor Cout, wherein,
the first bridge unit 10 includes a first switch Q1, a second switch Q2, a third switch Q3, a fourth switch Q4, an auxiliary inductor L1, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4;
the second bridge unit 20 includes a fifth switch Q5, a sixth switch Q6, a seventh switch Q7, an eighth switch Q8, a fifth diode D5, a sixth diode D6, a seventh diode D7, an eighth diode D8, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, and an eighth capacitor C8;
a first terminal of the first filter capacitor Cin is connected to a first terminal of the first switch tube Q1, a first terminal of the third switch tube Q3, a first terminal of the first diode D1, a first terminal of the first capacitor C1, a first terminal of the third diode D3, and a first terminal of the third capacitor C3, a second terminal of the first switch tube Q1 is connected to a second terminal of the first diode D1, a second terminal of the first capacitor C1, a first terminal of the auxiliary inductor L1, a first terminal of the second switch tube Q2, a first terminal of the second diode D2, a first terminal of the second capacitor C2, a second terminal of the auxiliary inductor L6329 is connected to a first terminal of the transformer, a second terminal of the third switch tube Q84 is connected to a second terminal of the third diode D3, a second terminal of the third capacitor C3, a first terminal of the fourth switch tube Q4, a first terminal of the fourth diode D4, a first terminal of the fourth capacitor C375, a second terminal of the second switch tube Q2, and a first terminal of the second switch tube Q57323 are connected to a first terminal of the second diode D1, A second end of the second capacitor C2, a second end of the fourth switch tube Q4, a second end of the fourth diode D4, a second end of the fourth capacitor C4, and a second end of the first filter capacitor Cin;
a third terminal of the transformer is connected to a first terminal of a fifth switching tube Q5, a first terminal of a fifth diode D5, a first terminal of a fifth capacitor C5, a first terminal of a sixth switching tube Q6, a first terminal of a sixth diode D6, and a first terminal of a sixth capacitor C6, a second terminal of a fifth switching tube Q5 is connected to a second terminal of a fifth diode D5, a second terminal of a fifth capacitor C5, a first terminal of a seventh switching tube Q7, a first terminal of a seventh diode D7, a first terminal of a seventh capacitor C7, and a first terminal of a second filter capacitor Cout, a second terminal of a seventh switching tube Q7 is connected to a second terminal of a seventh diode D7, a second terminal of a seventh capacitor C7, a fourth terminal of the transformer, a first terminal of an eighth switching tube Q8, a first terminal of an eighth diode D8, a first terminal of an eighth capacitor C8, a second terminal of an eighth switching tube Q8, a second terminal of an eighth diode D8, a second terminal of an eighth diode D8, and a second terminal of an eighth capacitor C8, A second terminal of the sixth diode D6, a second terminal of the sixth capacitor C6, and a second terminal of the second filter capacitor Cout are connected.
Optionally, the duty ratios of the driving signals of the first switch tube Q1, the second switch tube Q2, the third switch tube Q3, the fourth switch tube Q4, the fifth switch tube Q5, the sixth switch tube Q6, the seventh switch tube Q7, and the eighth switch tube Q8 are 50%, and the complementary conduction is performed. H1 is a phase shift angle between the first switch tube and the fifth switch tube; h2 is a phase shift angle between the first switching tube and the fourth switching tube; h3 is a phase shift angle between the fifth switching tube and the eighth switching tube. H1, H2, H3 are phase shift angles relative to half a conduction cycle. The leakage inductance of the transformer is too small to be ignored. The dual active bridge topology controls the flow of energy by controlling H1, H2, H3. Wherein the input voltage Vin and the output voltage Vout are shown in fig. 1. It can control the output current by controlling H1, H2, H3 specifically by the operating frequency of the dual active bridge converter.
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating a converter control method according to an embodiment of the present disclosure. As shown in fig. 2, the method includes:
201. the input voltage and the output voltage of the dual-active-bridge converter in the first work period are obtained.
The first duty cycle may be understood as the first duty cycle of the dual active bridge converter at the beginning of operation. And in the first working period, the fixed working frequency is adopted to carry out switching control on the switching tube in the double-active-bridge converter, so that the power control on the double-active-bridge converter can be realized.
The method for acquiring the input voltage and the output voltage in the first working period can be acquired from a memory, or the method can be used for detecting the additional input voltage and the output voltage of the dual-active-bridge converter after the first working period, and the like.
202. And determining whether the working state of the double-active-bridge converter in the first working period is a preset working state or not according to the input voltage and the output voltage.
The preset operating state may be understood as an operating state in which at least one of the input voltage of the dual-active bridge converter and the input voltage is not less than a preset voltage threshold, where the preset voltage threshold is set by an empirical value or historical data, for example, the preset voltage threshold may be 300V or the like.
Not the preset operating state may be understood as an operating state in which both the input voltage and the output voltage are less than a preset voltage threshold.
203. If the working state of the double-active-bridge converter in the first working period is not the preset working state, acquiring K second working frequencies of the double-active-bridge converter in K continuous working periods, and acquiring K reference output voltages of the double-active-bridge converter in the K continuous working periods, wherein the first working period is the first working period in the K continuous working periods.
The K consecutive duty cycles may be a number of cycles set by empirical values or historical data. K consecutive periods may also be characterized by consecutive sampling times. The reference output voltage may be the voltage actually output by the dual active bridge converter during each duty cycle.
The reference output voltage of the double-active-bridge converter in K continuous work periods can be obtained through a detection and recording method, and the second work frequency of each work period is determined through the input voltage and the output voltage of each work period.
204. And determining a third working frequency of a second working period according to the K second working frequencies and the K reference output voltages, wherein the second working period is a working period after the last working period in the K continuous working periods.
The frequency variation of the dual-active-bridge converter in the K work periods can be controlled according to the K reference work converters, the output voltage variation of the dual-active-bridge converter in the K work periods can be determined according to the K reference output voltages, and the third work frequency in the second work period can be determined according to the frequency variation, the output voltage variation and the like.
The number of the second working periods can be M, the M are continuous working periods, M is set through experience values or historical data, and in each second working period, the double-active-bridge converter is controlled by using the third working frequency, so that the condition of loop oscillation can be reduced, and the stability of the double-active-bridge converter is improved.
205. And controlling the double-active-bridge converter in the second working period according to the third working frequency.
The specific control may be that the PWM wave is transmitted through the third operating frequency, and the dual active bridge converter is controlled according to the PWM wave.
In one possible implementation, a possible method of acquiring K second operating frequencies of the dual-active-bridge converter in K consecutive operating cycles includes:
a1, acquiring input voltage and output voltage of a target working period, wherein the target working period is any one of the K continuous working periods;
a2, acquiring a target voltage, wherein the target voltage is the maximum value of the input voltage and the output voltage of the target working period;
a3, determining the target frequency according to the target voltage and a preset frequency coefficient;
and A4, acquiring the working frequency of each working period in the K continuous working periods by the method for acquiring the target frequency until the K second working frequencies are obtained.
The preset frequency coefficient is set by an empirical value or historical data. The input voltage and the output voltage of the target duty cycle may be preset input voltages. The output voltage is the output voltage after the duty cycle.
The actual operating frequency of the dual active bridge converter in each operating cycle is determined according to the set input voltage and the set output voltage, and the specific determination method refers to the determination method of the second operating frequency.
In the example, the target frequency is determined according to the maximum value of the input voltage and the output voltage by acquiring the input voltage and the output voltage of each period in the K continuous working periods, so that the target frequency can be determined by the input voltage or the input voltage in a feedback mode, and the accuracy of the control of the target converter is improved.
In one possible implementation manner, one possible determination of the third operating frequency of the second operating cycle according to the K second operating frequencies and the K reference output voltages includes:
b1, determining K frequency variation quantities according to the K second working frequencies, wherein the frequency variation quantities are variation quantities of the second working frequencies relative to a preset working frequency;
b2, determining K voltage variable quantities according to the K reference output voltages, wherein the voltage variable quantities are the variable quantities of the reference output voltages relative to a preset output voltage;
b3, if K frequency variation with K voltage variation accords with the preset condition, then according to K reference output voltage with the third operating frequency of second duty cycle is confirmed to the frequency coefficient of predetermineeing, the preset condition is that K frequency variation has N frequency variation at least to be greater than and predetermines frequency variation just K voltage variation has N voltage variation at least to be greater than and predetermines voltage variation.
The preset operating frequency may be an actual operating frequency of each operating cycle, and the preset output voltage may be an output voltage set for each operating cycle.
The third operating frequency may be determined according to the average value of the reference output voltages being equal to a preset frequency coefficient.
In this example, when the K frequency variations and the K voltage variations meet the preset condition, the third operating frequency of the second operating period is determined according to the K reference output voltages and the preset frequency coefficient, so that the condition of loop oscillation can be reduced, and the stability of the dual-active-bridge converter is improved.
In one possible implementation manner, a possible determination of the third operating frequency of the second duty cycle according to the K reference output voltages and the preset frequency coefficient includes:
c1, obtaining the average voltage of the K reference output voltages;
and C2, determining a third working frequency of the second working period according to the mean voltage and the preset frequency coefficient.
The third operating frequency may be determined as a product of the mean voltage and a preset frequency coefficient.
In this example, the third operating frequency is determined by the mean voltage and the preset frequency coefficient, so that the accuracy of the target operating converter in control can be improved.
In a possible implementation manner, the number of the second duty cycles is M, and the M second duty cycles are consecutive duty cycles, and the frequency adjustment method further includes:
d1, controlling the double-active-bridge converter in the M second working periods according to the third working frequency;
d2, acquiring the input voltage and the output voltage of the last working cycle in the M second working cycles;
d3, determining the working frequency of a third working period according to the input voltage and the output voltage, wherein the third working period is a working period after the last working period in the M second working periods.
M is a predetermined value, for example, M is 2. The double-active-bridge converter is adjusted by using the same third working frequency in a plurality of second working periods, so that the condition of loop oscillation can be reduced, and the stability of the double-active-bridge converter is improved.
In a possible implementation manner, if the K frequency variations and the K voltage variations do not meet a preset condition, the operating frequency of the second duty cycle is determined according to the input voltage and the output voltage of the second duty cycle.
Specifically, it can be understood that: the frequency of the second duty cycle is determined according to the set input voltage and the set output voltage of the second duty cycle, and for the specific method for determining the operating frequency, reference may be made to the method for determining the second operating frequency in the foregoing embodiment, which is not described herein again.
In one possible implementation manner, a possible method for determining whether an operating state of the dual-active-bridge converter in a first operating period is a preset operating state according to the input voltage and the output voltage includes:
e1, if the input voltage and the output voltage are both smaller than a preset voltage threshold, determining that the working state of the dual-active-bridge converter in the first working period is not a preset working state;
e2, if at least one of the input voltage and the input voltage is not less than the preset voltage threshold, determining that the working state of the dual-active-bridge converter in the first working period is a preset working state.
When it is determined that the working state of the first working cycle is the preset working state, the working frequency of the first working cycle may be determined according to the set input voltage and the set output voltage of the first working cycle, and the specific method for determining the working frequency may refer to the method for determining the second working frequency in the foregoing embodiment, which is not described herein again, and in the subsequent working cycle, the method for determining the working frequency of the first working cycle may be adopted to determine the corresponding working frequency.
In one specific embodiment, a method for frequency tuning a dual active bridge converter is provided, specifically as follows:
step 1, electrifying a power supply module, and initializing variables of the double-active-bridge converter.
The variables initialized include the system oscillation time Δ t 2. Of course, other related variables need to be initialized, and are not described in detail herein.
And 2, recording the input voltage Vin, outputting the voltage Vout, and setting the threshold voltage Va of the judgment voltage.
The threshold voltage Va of the judgment voltage may be understood as a threshold voltage for judging whether the dual active bridge converter is in a preset operation state.
And 3, when the maximum values of Vin and Vout are greater than the threshold voltage Va, the dual-active-bridge converter works in a fixed frequency mode, i.e. f = fa, and if the system oscillator suppression time Δ t2 has a value, 0 needs to be cleared, i.e. Δ t2= 0.
fa is a frequency determined according to the input voltage and the output voltage of the dual-active bridge converter, and specific reference may be made to the method for determining the first operating frequency in the foregoing embodiment, which is not described herein again.
And step 4, carrying out PWM wave emission by the double-active-bridge converter according to the frequency fa and the control phase shift angles W1, W2 and W3, and controlling the transmission of power.
And step 5, when the maximum values of Vin and Vout are smaller than the threshold voltage Va, obtaining the adjusting switching frequency fb = Max (Vin, Vout) × k according to the maximum values of Vin and Vout multiplied by a fixed frequency coefficient k.
And 6, when the device works in the mode of adjusting the switching frequency, continuously recording the variation quantity delta fb of the adjusting frequency within the sampling delta t time, and setting a threshold value delta fset.
The adjustment of the switching frequency mode may be understood as a mode which is not in a preset operating state. The Δ t time may be the duration of K consecutive duty cycles in the previous embodiment, etc.
The variation Δ fb of the adjustment frequency can be understood as the frequency variation in the foregoing embodiment, and the threshold Δ fset can be the preset operating frequency in the foregoing embodiment.
And 7, continuously recording the variation quantity delta Vout of the output voltage within the sampling delta t time. While setting the threshold value Δ Vset.
The threshold Δ Vset may be the output voltage set by the dual active bridge converter.
Step 8, further determining whether the variation of the adjustment frequency and the variation of the output voltage exceed the corresponding threshold N times at the same time, that is, (Δ f > =Δfset and Δ Vout > =Δvset) N times. Or after the frequency is adjusted according to the average voltage, at least T3 cycles of working are needed, and meanwhile, the value of T3 is set according to actual debugging, so that the direct next adjustment is prevented from entering oscillation, namely 1< Deltat 2< = T3.
After the frequency is adjusted according to the average voltage, the driver needs to work for at least two cycles, and simultaneously sets the value of T3 according to actual debugging, so as to prevent the direct next adjustment from oscillating, specifically, it can be understood that after the target adjustment frequency determined by the average voltage of the output voltage is adjusted, M adjustments are needed, where the value of T3 may be the same as the value M in the foregoing embodiment. Specifically, T3 cycles may be operated at the third operating frequency.
And 9, if the judgment condition in the step 8 is not satisfied, setting the current working frequency to be equal to the adjusting frequency f = fb, and if the system oscillator suppression time Δ t2 has a numerical value, clearing 0, namely Δ t2= 0. The converter performs step 4.
And 10, if the judgment condition in the step 8 is satisfied, calculating the average voltage Vouta of the output voltage within the sampling delta t time, and calculating the suppression frequency fc = Vouta k according to the average voltage. And determining the working frequency of the current working period according to fc.
Step 11, shock suppression time Δ t2 clear 0, and start timing, i.e., Δ t2=0+ +. The frequency is equal to the dynamic frequency f = fc, the converter performs step 4, namely, PWM wave transmission is performed according to the control phase shift angles W1, W2 and W3, and power transmission is controlled.
And step 12, ending the control strategy.
In this example, whether the variation of the adjustment frequency and the variation of the output voltage exceed the corresponding threshold value N times at the same time is judged and judged in the sampling period, and after exceeding, the working frequency of the current period is determined according to the average voltage of the output voltage in the sampling time, so that the oscillation of the double-active-bridge converter can be reduced, and the stability is improved.
In accordance with the foregoing embodiments, please refer to fig. 3, fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present application, and as shown in fig. 3, the terminal includes a processor and a memory, and the processor and the memory are connected to each other, where the memory is used for storing a computer program, the computer program includes program instructions, the processor is configured to call the program instructions, and the program includes instructions for performing the following steps;
acquiring an input voltage and an output voltage of the double-active-bridge converter in a first working period;
determining whether the working state of the double-active-bridge converter in a first working period is a preset working state or not according to the input voltage and the output voltage;
if the working state of the double-active-bridge converter in a first working period is not a preset working state, acquiring K second working frequencies of the double-active-bridge converter in K continuous working periods, and acquiring K reference output voltages of the double-active-bridge converter in the K continuous working periods, wherein the first working period is a first working period of the K continuous working periods;
determining a third working frequency of a second working period according to the K second working frequencies and the K reference output voltages, wherein the second working period is a working period after the last working period in the K continuous working periods;
controlling the dual active bridge converter in the second working period according to the third working frequency;
if the working state of the double-active-bridge converter in the first working period is a preset working state, determining a first working frequency of the double-active-bridge converter according to the input voltage and the output voltage, and controlling the double-active-bridge converter in the first working period and the second working period according to the first working frequency;
the obtaining K second operating frequencies of the dual-active-bridge converter in K consecutive operating cycles includes:
acquiring input voltage and output voltage of a target working period, wherein the target working period is any one of the K continuous working periods;
acquiring a target voltage, wherein the target voltage is the maximum value of the input voltage and the output voltage of the target working period;
determining the target frequency according to the target voltage and a preset frequency coefficient;
and acquiring the working frequency of each working period in the K continuous working periods by the method for acquiring the target frequency until the K second working frequencies are obtained.
The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It is understood that the terminal includes corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above-described functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative elements and algorithm steps described in connection with the embodiments provided herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the terminal may be divided into the functional units according to the above method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
In accordance with the above, referring to fig. 4, fig. 4 is a schematic structural diagram of a converter control device according to an embodiment of the present application. As shown in fig. 4, the apparatus includes:
a first obtaining unit 401, configured to obtain an input voltage and an output voltage of the dual active bridge converter in a first duty cycle;
a first determining unit 402, configured to determine whether a working state of the dual active bridge converter in a first working period is a preset working state according to the input voltage and the output voltage;
a second obtaining unit 403, configured to obtain, if a working state of the dual active bridge converter in a first working period is a preset working state, K second working frequencies of the dual active bridge converter in K consecutive working periods, and K reference output voltages of the dual active bridge converter in the K consecutive working periods, where the first working period is a first working period of the K consecutive working periods;
a second determining unit 404, configured to determine a third operating frequency of a second operating cycle according to the K second operating frequencies and the K reference output voltages, where the second operating cycle is an operating cycle after a last operating cycle of the K consecutive operating cycles;
a first control unit 405, configured to control the dual active bridge converter in the second duty cycle according to the third operating frequency;
a second control unit 406, configured to determine a first operating frequency of the dual-active bridge converter according to the input voltage and the output voltage if an operating state of the dual-active bridge converter in a first operating period is a preset operating state, and control the dual-active bridge converter in the first operating period and the second operating period according to the first operating frequency;
in the aspect of obtaining K second operating frequencies of the dual active bridge converter in K consecutive operating cycles, the second obtaining unit is configured to:
acquiring input voltage and output voltage of a target working period, wherein the target working period is any one of the K continuous working periods;
acquiring a target voltage, wherein the target voltage is the maximum value of the input voltage and the output voltage of the target working period;
determining the target frequency according to the target voltage and a preset frequency coefficient;
and acquiring the working frequency of each working period in the K continuous working periods by the method for acquiring the target frequency until the K second working frequencies are obtained.
In one possible implementation manner, the second determining unit 404 is configured to:
determining K frequency variation quantities according to the K second working frequencies, wherein the frequency variation quantities are variation quantities of the second working frequencies relative to a preset working frequency;
determining K voltage variation quantities according to the K reference output voltages, wherein the voltage variation quantities are the variation quantities of the reference output voltages relative to a preset output voltage;
if K frequency variation with K voltage variation accords with the preset condition, then according to K reference output voltage with the third operating frequency of second duty cycle is confirmed to the frequency coefficient of predetermineeing, the preset condition is that K frequency variation has N frequency variation at least and is greater than and predetermines frequency variation just K voltage variation has N voltage variation at least and is greater than and predetermines voltage variation.
In a possible implementation manner, in the aspect of determining the third operating frequency of the second duty cycle according to the K reference output voltages and the preset frequency coefficient, the second determining unit 404 is configured to:
obtaining the mean voltage of the K reference output voltages;
and determining a third working frequency of the second working period according to the average voltage and the preset frequency coefficient.
In one possible implementation manner, the number of the second duty cycles is M, and the M second duty cycles are consecutive duty cycles, and the apparatus is further configured to:
controlling the dual-active-bridge converter in the M second working periods according to the third working frequency;
acquiring the input voltage and the output voltage of the last working cycle in the M second working cycles;
and determining the working frequency of a third working period according to the input voltage and the output voltage, wherein the third working period is a working period after the last working period in the M second working periods.
In a possible implementation manner, if the K frequency variations and the K voltage variations do not meet a preset condition, the second determining unit determines the operating frequency of the second duty cycle according to the second duty cycle input voltage and the second duty cycle output voltage.
In one possible implementation manner, the first determining unit 402 is configured to:
if the input voltage and the output voltage are both smaller than a preset voltage threshold value, determining that the working state of the double-active-bridge converter in a first working period is not a preset working state;
and if at least one of the input voltage and the input voltage is not less than the preset voltage threshold, determining that the working state of the dual-active-bridge converter in a first working period is a preset working state.
Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program causes a computer to execute a part or all of the steps of any one of the inverter control methods as described in the above method embodiments.
Embodiments of the present application also provide a computer program product including a non-transitory computer-readable storage medium storing a computer program, the computer program causing a computer to execute some or all of the steps of any one of the inverter control methods described in the above method embodiments.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module.
The integrated units, if implemented in the form of software program modules and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned memory comprises: various media capable of storing program codes, such as a usb disk, a read-only memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and the like.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash memory disks, read-only memory, random access memory, magnetic or optical disks, and the like.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A method of controlling a converter, the method comprising:
acquiring an input voltage and an output voltage of the double-active-bridge converter in a first working period;
determining whether the working state of the double-active-bridge converter in a first working period is a preset working state or not according to the input voltage and the output voltage;
if the working state of the double-active-bridge converter in a first working period is not a preset working state, acquiring K second working frequencies of the double-active-bridge converter in K continuous working periods, and acquiring K reference output voltages of the double-active-bridge converter in the K continuous working periods, wherein the first working period is a first working period of the K continuous working periods;
determining a third working frequency of a second working period according to the K second working frequencies and the K reference output voltages, wherein the second working period is a working period after the last working period in the K continuous working periods;
controlling the dual active bridge converter in the second working period according to the third working frequency;
if the working state of the double-active-bridge converter in the first working period is a preset working state, determining a first working frequency of the double-active-bridge converter according to the input voltage and the output voltage, and controlling the double-active-bridge converter in the first working period and the second working period according to the first working frequency;
the obtaining K second operating frequencies of the dual-active-bridge converter in K consecutive operating cycles includes:
acquiring input voltage and output voltage of a target working period, wherein the target working period is any one of the K continuous working periods;
acquiring a target voltage, wherein the target voltage is the maximum value of the input voltage and the output voltage of the target working period;
determining a target frequency according to the target voltage and a preset frequency coefficient;
and acquiring the working frequency of each working period in the K continuous working periods by the method for acquiring the target frequency until the K second working frequencies are obtained.
2. The method of claim 1, wherein determining a third operating frequency for a second duty cycle based on the K second operating frequencies and the K reference output voltages comprises:
determining K frequency variation quantities according to the K second working frequencies, wherein the frequency variation quantities are variation quantities of the second working frequencies relative to a preset working frequency;
determining K voltage variation quantities according to the K reference output voltages, wherein the voltage variation quantities are the variation quantities of the reference output voltages relative to a preset output voltage;
if K frequency variation with K voltage variation accords with the preset condition, then according to K reference output voltage with the third operating frequency of second duty cycle is confirmed to the frequency coefficient of predetermineeing, the preset condition is that K frequency variation has N frequency variation at least and is greater than and predetermines frequency variation just K voltage variation has N voltage variation at least and is greater than and predetermines voltage variation.
3. The method of claim 2, wherein determining the third operating frequency of the second duty cycle according to the K reference output voltages and the preset frequency coefficient comprises:
obtaining the mean voltage of the K reference output voltages;
and determining a third working frequency of the second working period according to the average voltage and the preset frequency coefficient.
4. The method of claim 2 or 3, wherein the number of the second duty cycles is M, and the M second duty cycles are consecutive duty cycles, the method further comprising:
controlling the dual-active-bridge converter in the M second working periods according to the third working frequency;
acquiring the input voltage and the output voltage of the last working cycle in the M second working cycles;
and determining the working frequency of a third working period according to the input voltage and the output voltage, wherein the third working period is a working period after the last working period in the M second working periods.
5. The method according to claim 4, wherein if the K frequency variations and the K voltage variations do not satisfy a predetermined condition, determining a third operating frequency of the second duty cycle according to the second duty cycle input voltage and the second duty cycle output voltage.
6. The method according to any one of claims 1-3, wherein determining whether the operating state of the dual active bridge converter in the first operating period is a preset operating state according to the input voltage and the output voltage comprises:
if the input voltage and the output voltage are both smaller than a preset voltage threshold value, determining that the working state of the double-active-bridge converter in a first working period is not a preset working state;
and if at least one of the input voltage and the input voltage is not less than the preset voltage threshold, determining that the working state of the dual-active-bridge converter in a first working period is a preset working state.
7. A converter control apparatus, characterized in that the apparatus comprises:
the first acquisition unit is used for acquiring the input voltage and the output voltage of the double-active-bridge converter in a first working period;
the first determining unit is used for determining whether the working state of the double-active-bridge converter in a first working period is a preset working state or not according to the input voltage and the output voltage;
a second obtaining unit, configured to obtain, if a working state of the dual-active-bridge converter in a first working period is not a preset working state, K second working frequencies of the dual-active-bridge converter in K consecutive working periods, and K reference output voltages of the dual-active-bridge converter in the K consecutive working periods, where the first working period is a first working period of the K consecutive working periods;
a second determining unit, configured to determine a third operating frequency of a second operating cycle according to the K second operating frequencies and the K reference output voltages, where the second operating cycle is an operating cycle after a last operating cycle of the K consecutive operating cycles;
the first control unit is used for controlling the double-active-bridge converter in the second working period according to the third working frequency;
the second control unit is used for determining a first working frequency of the double-active-bridge converter according to the input voltage and the output voltage and controlling the double-active-bridge converter in the first working period and the second working period according to the first working frequency if the working state of the double-active-bridge converter in the first working period is a preset working state;
in the aspect of obtaining K second operating frequencies of the dual active bridge converter in K consecutive operating cycles, the second obtaining unit is configured to:
acquiring input voltage and output voltage of a target working period, wherein the target working period is any one of the K continuous working periods;
acquiring a target voltage, wherein the target voltage is the maximum value of the input voltage and the output voltage of the target working period;
determining a target frequency according to the target voltage and a preset frequency coefficient;
and acquiring the working frequency of each working period in the K continuous working periods by the method for acquiring the target frequency until the K second working frequencies are obtained.
8. The apparatus of claim 7, wherein the second determining unit is configured to:
determining K frequency variation quantities according to the K second working frequencies, wherein the frequency variation quantities are variation quantities of the second working frequencies relative to a preset working frequency;
determining K voltage variation quantities according to the K reference output voltages, wherein the voltage variation quantities are the variation quantities of the reference output voltages relative to a preset output voltage;
if K frequency variation with K voltage variation accords with the preset condition, then according to K reference output voltage with the third operating frequency of second duty cycle is confirmed to the frequency coefficient of predetermineeing, the preset condition is that K frequency variation has N frequency variation at least and is greater than and predetermines frequency variation just K voltage variation has N voltage variation at least and is greater than and predetermines voltage variation.
9. A terminal, characterized in that it comprises a processor and a memory, said processor and memory being interconnected, wherein said memory is adapted to store a computer program comprising program instructions, said processor being configured to invoke said program instructions to perform the method according to any one of claims 1-6.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions that, when executed by a processor, cause the processor to carry out the method according to any one of claims 1-6.
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| CN202110799305.3A CN113258790B (en) | 2021-07-15 | 2021-07-15 | Converter control method and related device |
| KR1020237036355A KR20230154281A (en) | 2021-07-15 | 2022-01-07 | Converter control method and related devices |
| PCT/CN2022/070751 WO2023284273A1 (en) | 2021-07-15 | 2022-01-07 | Converter control method and related device |
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| CN202110799305.3A CN113258790B (en) | 2021-07-15 | 2021-07-15 | Converter control method and related device |
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| CN113258790B true CN113258790B (en) | 2021-09-14 |
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| KR (1) | KR20230154281A (en) |
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| CN113258790B (en) * | 2021-07-15 | 2021-09-14 | 深圳市永联科技股份有限公司 | Converter control method and related device |
| CN116488448B (en) * | 2023-05-16 | 2023-11-21 | 江苏科曜能源科技有限公司 | Control method and system for double active bridge converter |
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| CN113098285A (en) * | 2021-04-16 | 2021-07-09 | 中国矿业大学 | Method for optimally controlling reflux power of double-active-bridge converter under extended phase-shift control |
| CN113258790B (en) * | 2021-07-15 | 2021-09-14 | 深圳市永联科技股份有限公司 | Converter control method and related device |
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2021
- 2021-07-15 CN CN202110799305.3A patent/CN113258790B/en active Active
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- 2022-01-07 KR KR1020237036355A patent/KR20230154281A/en not_active Application Discontinuation
- 2022-01-07 WO PCT/CN2022/070751 patent/WO2023284273A1/en unknown
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| Publication number | Publication date |
|---|---|
| KR20230154281A (en) | 2023-11-07 |
| CN113258790A (en) | 2021-08-13 |
| WO2023284273A1 (en) | 2023-01-19 |
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