Power supply control method, electronic equipment and power supply
By calculating and adjusting the duty cycle in the Boost circuit, the problem of the gap between the actual heating power of the power supply and the expected power is solved, and more accurate power control is achieved, reducing product performance errors.
Patent Information
- Application Number
- CN202411396096.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-01-10
AI Technical Summary
In the existing power supply design, when the voltage is stable, there is a large gap between the actual heating power and the expected power value, resulting in product performance errors.
By determining the current reference value difference between the current and previous switching cycles in the Boost circuit, the duty cycle deviation value is calculated, and the duty cycle is adjusted based on the ideal value, so as to accurately control the switching cycle and reduce the difference between the heating power and the expected power. .
Effectively reduce or eliminate the difference between the actual heating power and the expected power value, reduce the performance error of power related products, and achieve more accurate power control.
Smart Images
Figure CN119298666A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of power supplies, and in particular to a power supply control method, an electronic device, and a power supply. Background Art
[0002] With the continuous development of industrial technology, high-frequency power supply design has gradually become a hot topic in industry research. Power electronic converter heating power supply, as a new heating method, has the advantages of energy saving, high efficiency and easy implementation compared with traditional methods. Therefore, it has been widely used in daily life scenes and industrial fields.
[0003] The Boost circuit has the function of boosting voltage. Applying the Boost circuit to the heating power supply can achieve power control while boosting voltage. However, the basic structure of the current conventional method is still a double closed loop of voltage and current. There is a technical problem that when the voltage is stable, there is a large gap between the actual heating power and the expected power value, resulting in errors in product performance. Summary of the invention
[0004] The embodiments of the present application provide a power control method, an electronic device, and a power supply, so as to at least solve the technical problem that there is a large gap between the actual heating power of the power supply and the expected power value, thereby reducing product performance errors.
[0005] According to a first aspect of an embodiment of the present application, a power supply control method is provided, wherein the power supply adopts a Boost circuit, and the method includes:
[0006] Determine a current reference value difference between a current switching cycle and a previous switching cycle in the Boost circuit;
[0007] Determine a duty cycle deviation value of a current switching cycle according to the current reference value difference, the input inductance of the Boost circuit, and the switching cycle duration of the Boost circuit;
[0008] The duty cycle of the current switching cycle is determined based on the ideal duty cycle value and the duty cycle deviation value.
[0009] By adopting this embodiment, the difference between the actual heating power and the expected power value can be reduced or even eliminated, thereby reducing the performance error of power supply related products.
[0010] In combination with the first aspect, in an optional implementation of the embodiment of the present application, determining a current reference value difference between a current switching cycle and a previous switching cycle in the Boost circuit includes:
[0011] Determine a current reference value of the current switching cycle according to the actual power and required power of the Boost circuit in the current switching cycle;
[0012] Determine a current reference value of a previous switching cycle according to the actual power and required power of the Boost circuit in the previous switching cycle;
[0013] A current reference value difference between the current switching cycle and the previous switching cycle is calculated based on the current reference value of the current switching cycle and the current reference value of the previous switching cycle.
[0014] In combination with the first aspect, in an optional implementation of the embodiment of the present application, determining the current reference value of the current switching cycle according to the actual power and the required power of the Boost circuit in the current switching cycle includes:
[0015] Obtaining an output voltage value of the Boost circuit and an inductor current value of the Boost circuit in a current switching cycle;
[0016] Calculating the real power of the Boost circuit according to the output voltage value and the inductor current value;
[0017] Proportional-integral regulation is performed according to the actual power and required power of the Boost circuit to obtain a current reference value of the current switching cycle.
[0018] By adopting this implementation, an accurate current reference value can be determined according to the actual power and required power of the Boost circuit.
[0019] In combination with the first aspect, in an optional implementation of the embodiment of the present application, determining the duty cycle deviation value of the current switching cycle according to the current reference value difference, the input inductance of the Boost circuit, and the switching cycle length of the Boost circuit includes:
[0020] Determining a current reference value difference according to a difference between the current reference value and the inductor current value;
[0021] The duty cycle deviation value is determined according to a product of the current reference value difference and the input inductance and a ratio of the product to the switching cycle duration.
[0022] By adopting this implementation, a duty cycle deviation value that conforms to the actual situation can be calculated based on the current reference value difference.
[0023] In combination with the first aspect, in an optional implementation of the embodiment of the present application, determining the duty cycle of the current switching cycle based on the ideal duty cycle value and the duty cycle deviation value includes:
[0024] The difference between the ideal duty cycle value and the duty cycle deviation value is used as the duty cycle of the current switching cycle.
[0025] By adopting this implementation method, the duty cycle of the current switching cycle can be accurately calculated.
[0026] In combination with the first aspect, in an optional implementation manner of the embodiment of the present application, the method further includes:
[0027] Obtaining an input voltage and an output voltage of the Boost circuit;
[0028] The ideal value of the duty cycle is determined based on the ratio of the input voltage to the output voltage of the Boost circuit.
[0029] By adopting this implementation, the ideal value of the duty cycle can be determined according to the input voltage and output voltage of the Boost circuit.
[0030] In combination with the first aspect, in an optional implementation manner of the embodiment of the present application, the duty cycle of the current switching cycle satisfies the following relationship:
[0031] D (k) =1-u in(k) / u dc(k) -L s (i * ref(k) -i (k) ) / T s
[0032] Among them, D (k) represents the duty cycle of the kth switching cycle, 1-u in(k) / u dc(k) represents the ideal duty cycle of the kth switching cycle, L s (i * ref(k) -i (k) ) / T s Indicates the duty cycle deviation value of the kth switching cycle, uin (k) represents the input voltage value of the kth switching cycle, u dc(k) represents the output voltage value of the kth switching cycle, i * ref(k) represents the current reference value of the kth switching cycle, i (k) represents the inductor current value of the kth switching cycle, L s represents the input inductance, T s represents the duration of the switching cycle, and k is a positive integer.
[0033] By adopting this implementation method, the duty cycle of the current switching cycle can be accurately calculated.
[0034] In combination with the first aspect, in an optional implementation manner of the embodiment of the present application, the method further includes:
[0035] The action of the switch in the Boost circuit is controlled according to the duty cycle of the current switching cycle.
[0036] By adopting this implementation method, the action of the switch tube is controlled according to the determined duty cycle that meets the actual power demand, which can meet the power demand more accurately compared with the prior art.
[0037] According to a second aspect of an embodiment of the present application, an electronic device is provided, the electronic device comprising:
[0038] a memory for storing one or more computer instructions;
[0039] A processor is used to call and execute the computer instructions to implement the power control method according to the first aspect of the embodiment of the present application.
[0040] According to a third aspect of an embodiment of the present application, a power supply is provided, the power supply comprising a Boost circuit;
[0041] The power supply adopts the method according to the first aspect of the embodiment of the present application, or the power supply includes the electronic device according to the second aspect of the embodiment of the present application.
[0042] In combination with the third aspect, in an optional implementation of the embodiment of the present application, the power supply is a heating power supply.
[0043] The technical effects obtained by the above-mentioned second to third aspects are similar to the technical effects obtained by the corresponding technical means in the first and second aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0044] Figure 1 is a circuit diagram of an existing Boost circuit;
[0045] Figure 2 It is a flowchart of a power supply control method provided in an embodiment of the present application;
[0046] Figure 3 is a flow chart of a method for determining a current reference value provided in an embodiment of the present application;
[0047] Figure 4 is a flow chart of a method for determining a duty cycle deviation value provided in an embodiment of the present application;
[0048] Figure 5 It is a closed-loop control block diagram of a heating power supply based on deadbeat control provided in an embodiment of the present application;
[0049] Figure 6 It is a block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0050] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.
[0051] It should be understood that the "plurality" mentioned in this article refers to two or more. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and so on are used to distinguish between the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first", "second" and so on do not limit the quantity and execution order, and the words "first", "second" and so on do not limit certain different
[0052] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.
[0053] First, the terms involved in the embodiments of the present application are introduced.
[0054] Boost circuit: Boost circuit is a common DC-DC converter used to boost the input voltage to a higher output voltage. Its structure is relatively simple and efficient, and is mainly composed of the following key components:
[0055] 1. Input voltage source: provides the initial DC voltage required by the circuit.
[0056] 2. Inductor: It plays the role of energy storage in the circuit. When the switch is closed, the current in the inductor increases, and the electric energy is stored in the form of magnetic field energy; when the switch is turned off, the current in the inductor cannot change suddenly, and will continue to flow through other paths (such as diodes), while releasing energy.
[0057] 3. Switching tube: usually uses power semiconductor devices such as MOSFET or IGBT. By controlling the on and off of the switching tube, the change of current in the inductor is controlled, thereby achieving voltage boost.
[0058] 4. Diode: When the switch is turned off, it provides a freewheeling path for the inductor, so that the energy in the inductor can be transferred to the output end. The diode plays a unidirectional conductive role here to prevent current backflow.
[0059] 5. Output capacitor: used to smooth the output voltage and reduce the ripple of the output voltage. When the switch tube is turned off, the output capacitor provides a stable voltage to the load.
[0060] 6. Load: The final output object of the circuit, such as motors, LED lights, etc.
[0061] Brief description of working principle: The working cycle of the Boost circuit can be divided into two stages: conduction and cutoff.
[0062] On stage: The switch is closed, the input voltage is applied to the inductor, the current in the inductor begins to increase, and the electrical energy is stored in the inductor in the form of magnetic field energy. At this time, the diode is reversely cut off, and the output capacitor supplies power to the load.
[0063] Cut-off stage: The switch tube is turned off. Since the current in the inductor cannot change suddenly, the inductor will generate self-induced electromotive force, which will be superimposed with the input voltage and charge the output capacitor through the diode, so that the voltage across the capacitor increases, thereby achieving voltage boost. At the same time, the energy in the inductor is also transmitted to the output end to supply the load.
[0064] Application areas: Boost circuits are widely used in power management, electric vehicle charging, solar power generation, DC motor transmission and other fields due to their high efficiency, simple structure and stable output voltage.
[0065] Figure 1 This is a circuit diagram of an existing Boost circuit. Figure 1 As shown, the grid power supply is Grid, L is the live wire, and N is the neutral wire; after the diode uncontrolled rectification, u in , the input inductance is L s , the current flowing through the inductor is i L , S is the switch tube, D is the output diode, C is the output filter capacitor, R o is the load resistance, the output voltage is u dc .
[0066] Taking the application of Boost circuit to heating power supply as an example, Boost circuit has the function of boosting voltage. Applying Boost circuit to heating power supply can realize power control while boosting voltage. However, the basic structure of the current conventional method is still the voltage and current double closed loop. This method is studied under the condition that the load characteristics remain unchanged. However, in actual product use, the resistance wire is not an ideal device. Its resistance value will change with the change of temperature. If the voltage outer loop control is still adopted, then when the voltage is stable, the change of resistance value of the resistance wire will cause the actual heating power to be inconsistent with the expected power value, resulting in errors in product performance.
[0067] Based on this, the present application embodiment provides a power control method, referring to Figure 2 The flowchart of the power supply control method shown is as follows, and the method includes the following processing procedures.
[0068] 100: Determine a current reference value difference between a current switching cycle and a previous switching cycle in the Boost circuit. Determine the current reference value according to the actual power and the required power of the Boost circuit in the current switching cycle.
[0069] The switching cycle of a boost circuit refers to the time required for a switch tube (such as a MOSFET) to complete a complete turn-on and turn-off process in the circuit. This cycle usually includes two main phases: the turn-on phase and the turn-off phase.
[0070] 104: Determine a duty cycle deviation value of a current switching cycle according to the current reference value difference, the input inductance of the Boost circuit, and the switching cycle duration of the Boost circuit, wherein the input inductance of the Boost circuit can be detected in the current cycle, or can be a fixed value.
[0071] 106: Determine the duty cycle of the current switching cycle based on the ideal duty cycle value and the duty cycle deviation value.
[0072] By adopting the power supply control method provided in this embodiment, the duty cycle deviation value of the current switching cycle is determined based on the current reference value difference, input inductance and switching cycle length, and then the duty cycle deviation value is adjusted based on the ideal duty cycle value, thereby at least solving the technical problem that there is a large gap between the actual heating power of the power supply and the expected power value, thereby reducing product performance errors.
[0073] Optionally, in an implementation of the present embodiment, processing 100 may be implemented in the following manner: determining a current reference value of the current switching cycle based on the actual power and required power of the Boost circuit in the current switching cycle; determining a current reference value of the previous switching cycle based on the actual power and required power of the Boost circuit in the previous switching cycle; and calculating a current reference value difference between the current switching cycle and the previous switching cycle based on the current reference value of the current switching cycle and the current reference value of the previous switching cycle.
[0074] For example, Figure 3 As shown, the current reference value of the current switching cycle is determined in the following manner.
[0075] 200: Obtain an output voltage value of the Boost circuit and an inductor current value of the Boost circuit in a current switching cycle.
[0076] 202: Calculate the real power of the Boost circuit according to the output voltage value and the inductor current value.
[0077] 204: Perform proportional-integral regulation according to the actual power and the required power of the Boost circuit to obtain a current reference value of the current switching cycle.
[0078] This implementation method is conducive to replacing the traditional voltage outer loop with a power outer loop, and using power to directly control the duty cycle of the power switch tube. Please refer to the following for more detailed description.
[0079] Optionally, in an implementation of this embodiment, as Figure 4 As shown, the process 104 can be implemented in the following manner:
[0080] 300: Determine a product of the current reference value difference and the input inductance according to the current reference value difference and the input inductance.
[0081] 302: Determine the duty cycle deviation value according to the product and the ratio of the product to the switching cycle duration.
[0082] By adopting this implementation method, the duty cycle deviation value can be accurately calculated, and it is beneficial to adopt the current inner loop for related control. Please refer to the description below for details.
[0083] Optionally, in an implementation of this embodiment, in 106, the difference between the ideal duty cycle value and the duty cycle deviation value is used as the duty cycle of the current switching cycle.
[0084] Optionally, in an implementation of this embodiment, the ideal value of the duty cycle is determined in the following manner: obtaining the input voltage and the output voltage of the Boost circuit; and determining the ideal value of the duty cycle based on the ratio of the input voltage to the output voltage of the Boost circuit.
[0085] Optionally, in an implementation of this embodiment, Figure 2 The power control method shown further includes, after processing 106: controlling the action of the switch tube in the Boost circuit according to the duty cycle of the current switching cycle.
[0086] In this embodiment or related implementations, a power outer loop is used to replace the traditional voltage outer loop, and direct power control is used to achieve the desired power value when the load characteristics change. The inner loop adopts a deadbeat control method based on the topological characteristics of the Boost circuit, so that the control system has a better current control effect, thereby making the entire control system more stable, fast and efficient.
[0087] Figure 5 This is a closed-loop control block diagram of the heating power supply based on deadbeat control according to an embodiment of the present application. Figure 1 and Figure 5 A power control method according to an embodiment of the present application is described in detail.
[0088] Reference Figure 5 The control block diagram of the heating power supply is shown in the figure, where u dc is the output DC voltage, i L is the inductor current, and the product of the two is the total power consumed by the system. Since the back-end devices can be ignored in the overall power consumption, the product of the two can be approximately considered to be P out is the real power fed back by the system. out With the given required power value P ref After comparison and PI adjustment, the current reference value required by the current loop can be obtained. After the current reference value is subjected to a first-level deadbeat control, the duty cycle required to control the switch tube S can be obtained to perform PWM wave control.
[0089] The following is a rule discovered by the inventor of this application during the research and development process, and the rule has been successfully applied to the embodiments of this application. The derivation process of deadbeat control is as follows:
[0090] Assume the duty cycle of the switch tube S is D (k) ,When the switch is turned on, the circuit model of the Boost converter (or Boost circuit) is:
[0091]
[0092] When the switch is turned off, the circuit model is:
[0093]
[0094] In the kth switching cycle T s In the example, the initial value of the inductor current is set to 0. At this time, the output voltage of the uncontrolled rectifier bridge is uin (k) , the inductor current is i L(k) , the Boost output DC voltage is u dc(k) When the switch tube S is turned on, the instantaneous value of the inductor current is i 1 , the kth T s At the end of the cycle, the inductor current is i (k+1) , then combining equations (1) and (2), let the kth T s The duty cycle of the cycle is D (k) , then:
[0095]
[0096] Substituting formula (3) into formula (4), we can obtain:
[0097]
[0098] Assuming that the inductor current follows the reference current within one cycle, that is, deadbeat control is achieved, the following formula holds true:
[0099] i (k+1) =i * re f(k) (6)
[0100] Where i * ref(k) is the given value of the inductor current in the kth cycle, that is, Figure 4 The output of the power loop PI (proportional-integral) is shown.
[0101] Substituting equation (6) into equation (5), we can obtain that the duty cycle of the kth cycle under deadbeat control can be expressed as:
[0102] D (k) =1-u in(k) / u dc(k) -L s (i * ref(k) -i (k) ) / T s (7)
[0103] According to the above calculation method, it is the deadbeat control method under the power closed loop condition. In formula (7), refer to formula (6), i (k)The inductor current value of the kth switching cycle is equal to the current reference value of the k-1th switching cycle.
[0104] The embodiment of the present application performs power supply control based on the above-mentioned deadbeat control method, and adopts power and current dual closed-loop control to achieve precise control of power supply power. The inner loop adopts the deadbeat control method, which can further enhance the dynamic characteristics of the system.
[0105] The above describes in detail the power control method according to the embodiment of the present application. The embodiment of the present application also provides an electronic device, such as Figure 6 As shown, the electronic device includes a memory 600 and a processor 610. The memory 600 stores computer instructions, and the processor 610 is used to call and execute the computer instructions to implement the power control method or its implementation method provided in the embodiment of the present application. Figure 6 As shown, the electronic device includes a processor 610, at least one communication bus 620, a user interface 630, at least one external communication interface 640 and a memory 600. The communication bus 620 is configured to realize the connection and communication between these components. The user interface 630 may include a display screen, through which the user inputs the instruction light. The external communication interface 640 may include a standard wired interface and a wireless interface.
[0106] The embodiment of the present application also provides a computer program product, which, when executed, implements the power control method or its implementation method provided in the embodiment of the present application.
[0107] An embodiment of the present application also provides a computer-readable storage medium for storing the above-mentioned computer program product.
[0108] The description of the above computer program product, computer-readable storage medium, and electronic device is similar to the description of the above method embodiment, and has similar beneficial effects as the method embodiment. For technical details not disclosed in the computer program product, computer-readable storage medium, and electronic device of this application, please refer to the description of the method embodiment of this application for understanding.
[0109] The embodiment of the present application also provides a power supply, which uses a boost circuit for boosting. The power supply uses the power supply control method provided in the embodiment of the present application, for example, the duty cycle of the opening tube is determined according to the method in the foregoing text, and the action of the switch tube of the Boost circuit is controlled according to the duty cycle. Alternatively, the power supply has an electronic device provided according to the embodiment of the present application, and the electronic device is used to implement the power supply control method, control the action of the switch tube, etc. Exemplarily, the power supply can be a heating power supply.
[0110] The sequence of serial numbers or introduction of the embodiments of the present application is for description only and does not represent the superiority or inferiority of the embodiments.
[0111] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.
[0112] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.
[0113] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.
[0114] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)). It is worth noting that the computer-readable storage medium mentioned in the embodiment of the present application may be a non-volatile storage medium, in other words, a non-transient storage medium.
[0115] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.) and signals involved in the embodiments of this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions. For example, the scene data of the current frame in the three-dimensional virtual scene, the device information of the client, and the scene interaction information involved in the embodiments of this application are all obtained with full authorization.
[0116] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. A power supply control method, wherein the power supply adopts a Boost circuit, characterized in that: The power control method comprises: Determine a current reference value difference between a current switching cycle and a previous switching cycle in the Boost circuit; Determine a duty cycle deviation value of a current switching cycle according to the current reference value difference, the input inductance of the Boost circuit, and the switching cycle duration of the Boost circuit; The duty cycle of the current switching cycle is determined based on the ideal duty cycle value and the duty cycle deviation value.
2. The power control method according to claim 1, characterized in that: The determining of the current reference value difference between the current switching cycle and the previous switching cycle in the Boost circuit includes: Determine a current reference value of the current switching cycle according to the actual power and required power of the Boost circuit in the current switching cycle; Determine a current reference value of a previous switching cycle according to the actual power and required power of the Boost circuit in the previous switching cycle; A current reference value difference between the current switching cycle and the previous switching cycle is calculated based on the current reference value of the current switching cycle and the current reference value of the previous switching cycle.
3. The power control method according to claim 2, characterized in that: Determining the current reference value of the current switching cycle according to the actual power and the required power of the Boost circuit in the current switching cycle includes: Obtaining an output voltage value of the Boost circuit and an inductor current value of the Boost circuit in a current switching cycle; Calculating the real power of the Boost circuit according to the output voltage value and the inductor current value; Proportional-integral regulation is performed according to the actual power and required power of the Boost circuit to obtain a current reference value of the current switching cycle.
4. The power control method according to claim 1, characterized in that: Determining the duty cycle deviation value of the current switching cycle according to the current reference value difference, the input inductance of the Boost circuit, and the switching cycle duration of the Boost circuit includes: The duty cycle deviation value is determined according to a product of the current reference value difference and the input inductance and a ratio of the product to the switching cycle duration.
5. The power control method according to claim 1, characterized in that: The step of determining the duty cycle of the current switching cycle based on the ideal duty cycle value and the duty cycle deviation value comprises: The difference between the ideal duty cycle value and the duty cycle deviation value is used as the duty cycle of the current switching cycle.
6. The power control method according to claim 5, characterized in that: The method further comprises: Obtaining an input voltage and an output voltage of the Boost circuit; The ideal value of the duty cycle is determined based on the ratio of the input voltage to the output voltage of the Boost circuit.
7. The power control method according to claim 6, characterized in that: The duty cycle of the current switching cycle satisfies the following relationship: D (k) =1-u in(k) / u dc(k) -L s (i * ref(k) -i (k) ) / T s Among them, D (k) represents the duty cycle of the kth switching cycle, 1-u in(k) / u dc(k) represents the ideal duty cycle of the kth switching cycle, L s (i * ref(k) -i (k) ) / T s Indicates the duty cycle deviation value of the kth switching cycle, uin (k) represents the input voltage value of the kth switching cycle, u dc(k) represents the output voltage value of the kth switching cycle, i * ref(k) represents the current reference value of the kth switching cycle, i (k) represents the inductor current value of the kth switching cycle, which is equal to the current reference value of the k-1th switching cycle, L s represents the input inductance, T s represents the duration of the switching cycle, and k is a positive integer.
8. The power control method according to claim 1, characterized in that: The method further comprises: The action of the switch in the Boost circuit is controlled according to the duty cycle of the current switching cycle.
9. An electronic device, characterized in that: The electronic device comprises: a memory for storing one or more computer instructions; A processor, configured to call and execute the computer instructions to implement the power control method according to any one of claims 1 to 8.
10. A power supply, characterized in that: The power supply includes a Boost circuit; The power supply adopts the power supply control method as described in any one of claims 1 to 8, or the power supply includes the electronic device as described in claim 9.
11. The power supply according to claim 10, characterized in that: The power supply is a heating power supply.