Inductance control system with controllable inductance value

Abstract

The utility model provides an inductance control system with controllable inductance, which comprises an inductor body, a current sampling device, a controller and a current source, and is characterized in that the inductor body comprises a magnetic core and a winding, and the winding is wound on the magnetic core; the current sampling device is electrically connected with a winding of the inductor body and is used for collecting current I1 flowing through the winding; the controller is electrically connected with the current sampling device and is used for receiving the current data of the I1, calculating the magnetic field intensity in the magnetic core and determining the required compensation current I2; the current source is electrically connected with the controller and used for outputting compensation current I2 to the winding so as to generate a second magnetic field in the magnetic core, and the second magnetic field interacts with the first magnetic field generated by I1 so as to adjust magnetic field distribution in the magnetic core. Through closed-loop feedback control, accurate adjustment of the magnetic field of the inductor body is realized, the stability and the control precision of a system are enhanced, and the inductor is widely applied to inductance value control and magnetic field compensation occasions.

Description

Technical Field

[0001] This utility model relates to the field of inductance control technology, and in particular to an inductance control system with controllable inductance. Background Technology

[0002] In the current power electronics industry, inductors are widely used for filtering, rectification, and other functions. Soft magnetic materials are primarily used as the inductor core. However, the magnetization curve of soft magnetic materials is not uniform, resulting in inconsistent inductance under different currents. This necessitates considering a larger inductance margin during the design phase. Furthermore, the magnetic core may saturate under high current conditions, requiring a larger core to prevent saturation. Both of these existing inductor problems necessitate additional cost and size reduction to address. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, the purpose of this invention is to propose an inductance control system with controllable inductance.

[0005] To achieve the above objectives, this utility model provides an inductor control system with controllable inductance, comprising:

[0006] An inductor body, the inductor body comprising a magnetic core and a winding, the winding being wound on the magnetic core;

[0007] A current sampling device is electrically connected to the winding of the inductor body;

[0008] The controller is electrically connected to the current sampling device;

[0009] A current source is electrically connected to the controller, and the output terminal of the current source is connected to the winding of the inductor body.

[0010] Optionally, the inductor body is used for:

[0011] When a current I1 flows through the winding, a first magnetic field is generated in the magnetic core.

[0012] Optionally, the current sampling device is used for:

[0013] The current I1 flowing through the winding is collected in real time, and the current data of current I1 is transmitted to the controller.

[0014] Optionally, the controller is used for:

[0015] The current data transmitted by the current sampling device is received, the strength of the first magnetic field generated by the current I1 is calculated, and the required compensation current I2 is determined according to the preset magnetic field control target. The compensation current I2 is used to generate a second magnetic field in the magnetic core. The second magnetic field interacts with the first magnetic field to make the magnetic field in the magnetic core reach the preset magnetic field control target.

[0016] Optionally, the current source is used for:

[0017] The controller receives the compensation current I2 control command output by the controller and outputs the compensation current I2 to the winding of the inductor body.

[0018] Optionally, the controller is used for:

[0019] The compensation current I2 is adjusted by closed-loop feedback control to counteract or regulate the first magnetic field.

[0020] Optionally, the magnetic core of the inductor body is configured as a closed magnetic circuit structure.

[0021] Optionally, the current source is a controllable current source, which can adjust the amplitude and direction of the output current according to the instructions of the controller.

[0022] This invention provides an inductor control system with controllable inductance, comprising an inductor body, a current sampling device, a controller, and a current source. The inductor body includes a magnetic core and a winding, with the winding wound on the magnetic core. The current sampling device is electrically connected to the winding of the inductor body and is used to collect the current I1 flowing through the winding. The controller is electrically connected to the current sampling device and is used to receive the current data of I1, calculate the magnetic field strength in the magnetic core, and determine the required compensation current I2. The current source is electrically connected to the controller and is used to output the compensation current I1 to the winding to generate a second magnetic field in the magnetic core. The second magnetic field interacts with the first magnetic field generated by I1, thereby adjusting the magnetic field distribution in the magnetic core.

[0023] The beneficial effects of this invention are as follows: By detecting the current I1 flowing through the inductor, the controller controls the current source to output a compensating current I2 to counteract the magnetic field of I1, thereby adjusting the magnetic field strength of the core, preventing core saturation, and ensuring that the inductance varies within the target range. Furthermore, when the inductor current I1 contains both DC and AC components, the compensating current I2 can counteract the DC magnetic field bias, reducing the range of magnetic field variation and decreasing the core design size. This invention achieves precise adjustment of the inductor's magnetic field through closed-loop feedback control, enhancing inductor stability, reducing core size, and improving overall system performance. It is suitable for inductance control and magnetic field compensation applications.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0026] Figure 1 A schematic diagram of an inductor control system with controllable inductance provided in an embodiment of this utility model;

[0027] Figure 2 This is a schematic diagram of the principle of an inductor control system with controllable inductance provided in an embodiment of the present invention.

[0028] Figure label:

[0029] 1-Inductor body; 2-Current sampling device; 3-Controller; 4-Current source. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] To address the technical problems existing in the prior art, this utility model provides an inductor control system with controllable inductance. Figure 1 This is a schematic diagram of an inductor control system with controllable inductance provided in an embodiment of the present invention. Figure 1 As shown, the system includes an inductor body 1, a current sampling device 2, a controller 3, and a current source 4.

[0032] In this embodiment of the invention, the inductor body 1 includes a magnetic core and a winding. The winding is wound on the magnetic core to generate a magnetic field when current flows through it. The magnetic core adopts a closed magnetic circuit structure, which can concentrate magnetic lines of force, reduce magnetic field leakage, enhance the stability and control accuracy of the magnetic field, and further improve the performance of the inductor. This closed magnetic circuit core structure is a common design in the prior art and is suitable for applications requiring high magnetic flux density and low loss. Furthermore, the closed magnetic circuit structure of the inductor core facilitates the concentration of magnetic lines of force, reduces magnetic circuit losses, and improves the inductor's working efficiency and magnetic field control accuracy.

[0033] In this embodiment of the invention, the current sampling device 2 is electrically connected to the winding of the inductor body 1, and is used to collect the current data flowing through the winding in real time. This device is typically a current sensor or sampling circuit, a widely used component in the prior art, capable of rapid and accurate detection of current, providing basic data for subsequent control. This invention does not specifically limit its application in this regard.

[0034] In this embodiment of the invention, the controller 3 is electrically connected to the current sampling device 2 to receive the collected current data and calculate the required output compensation current according to the preset control target. The controller uses an existing control chip or microprocessor, enabling closed-loop control and exhibiting high calculation accuracy and response speed.

[0035] In this embodiment of the invention, the current source 4 is electrically connected to the controller 3, and the output terminal of the current source is connected to the winding of the inductor body. The current source is a controllable current source, capable of adjusting the amplitude and direction of the output current according to the controller's instructions. Such controllable current sources are relatively mature in the prior art, typically employing linear current sources or PWM (pulse width modulation) power supplies, which can provide stable and adjustable current output.

[0036] The following reference Figure 2 This paper details the working principle of the inductor control system proposed in this utility model.

[0037] First, a current I1 is passed into the inductor control system. When the current I1 flows through the winding, a first magnetic field is generated in the magnetic core. The magnitude of the magnetic field is inversely proportional to the current I1 flowing through the winding. The current through the winding forms a closed magnetic circuit in the magnetic core, concentrating the magnetic field lines, thereby realizing the basic function of the inductor.

[0038] Meanwhile, the current sampling device collects the current I1 flowing through the winding in real time and transmits the current data of current i1 to the controller. It is worth reiterating that the current sampling device is a common current sensor in existing technology, capable of accurately and efficiently detecting current changes.

[0039] Then, after receiving the current data transmitted by the current sampling device, the controller calculates the strength of the first magnetic field generated by the current I1, and determines the required compensation current I2 according to the preset magnetic field control target. The compensation current I2 is used to generate a second magnetic field in the magnetic core. The second magnetic field interacts with the first magnetic field, so that the magnetic field in the magnetic core reaches the preset magnetic field control target.

[0040] Subsequently, the current source receives the compensation current I2 control command output by the controller and outputs the compensation current I2 to the winding of the inductor body. The compensation current I2 is input into the winding of the inductor body, which will generate a second magnetic field in the magnetic core. The second magnetic field can adjust the magnetic field distribution in the magnetic core by superimposing or canceling the first magnetic field.

[0041] Ultimately, the controller adjusts the compensation current I2 through closed-loop feedback control. When the magnetic field in the core deviates from the control target, the controller adjusts the magnitude and direction of the compensation current I2 in real time to bring the total magnetic field back to the target range. This closed-loop feedback mechanism can effectively control the inductance, prevent core saturation, reduce magnetic field bias, and improve the accuracy of magnetic field control.

[0042] This invention optimizes the system structure by rationally configuring the inductor body, current sampling device, controller, and controllable current source in existing technologies and adopting a closed magnetic circuit structure design. Although each component and function belongs to existing technologies, the combination and connection of specific structures provide an inductor control system with high stability and good control accuracy. This system is beneficial for solving the problem of inductor magnetic field adjustment and is applicable to technical fields such as inductance control and magnetic field compensation.

[0043] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0044] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An inductor control system with controllable inductance, characterized in that, include: An inductor body, the inductor body comprising a magnetic core and a winding, the winding being wound on the magnetic core; A current sampling device is electrically connected to the winding of the inductor body; The controller is electrically connected to the current sampling device; A current source is electrically connected to the controller, and the output terminal of the current source is connected to the winding of the inductor body.

2. The system according to claim 1, characterized in that, The inductor body is used for: When a current I1 flows through the winding, a first magnetic field is generated in the magnetic core.

3. The system according to claim 2, characterized in that, The current sampling device is used for: The current I1 flowing through the winding is collected in real time, and the current data of current I1 is transmitted to the controller.

4. The system according to claim 3, characterized in that, The controller is used for: The current data transmitted by the current sampling device is received, the strength of the first magnetic field generated by the current I1 is calculated, and the required compensation current I2 is determined according to the preset magnetic field control target. The compensation current I2 is used to generate a second magnetic field in the magnetic core. The second magnetic field interacts with the first magnetic field to make the magnetic field in the magnetic core reach the preset magnetic field control target.

5. The system according to claim 4, characterized in that, The current source is used for: The controller receives the compensation current I2 control command output by the controller and outputs the compensation current I2 to the winding of the inductor body.

6. The system according to claim 5, characterized in that, The controller is used for: The compensation current I2 is adjusted by closed-loop feedback control to counteract or regulate the first magnetic field.

7. The system according to claim 6, characterized in that, The magnetic core of the inductor body is configured as a closed magnetic circuit structure.

8. The system according to claim 7, characterized in that, The current source is a controllable current source, which can adjust the amplitude and direction of the output current according to the instructions of the controller.

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