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Control method and device of LLC resonance circuit and terminal equipment

A technology of resonant circuit and control method, which is applied in the direction of output power conversion device, control/regulation system, electrical components, etc., can solve the problems of poor dynamic response ability of LLC resonant circuit, and achieve the effect of improving dynamic response ability

Active Publication Date: 2021-04-16
ZHANGZHOU KEHUA TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides a control method, device and terminal equipment of an LLC resonant circuit to solve the problem of poor dynamic response capability of the LLC resonant circuit in the prior art

Method used

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  • Control method and device of LLC resonance circuit and terminal equipment
  • Control method and device of LLC resonance circuit and terminal equipment
  • Control method and device of LLC resonance circuit and terminal equipment

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Embodiment Construction

[0022] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0023] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0024] In one embodiment, figure 1 It shows an implementation flow of a control method of an LLC resonant circuit, and the process is described in detail as follows:

[0025] S101: Collect the output voltage and output current of the LLC resonant circuit, and obtain a...

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Abstract

The invention is suitable for the technical field of circuit control, and provides an LLC resonance circuit control method and device and terminal equipment, and the method comprises the steps: collecting an output voltage and an output current of an LLC resonance circuit, and obtaining a voltage given value of the LLC resonance circuit; calculating the current variation according to the output current of the current sampling period and the output current of the previous sampling period; calculating a voltage deviation value according to the output voltage and the voltage given value; calculating a target control quantity according to the current variation and the voltage deviation value, and generating a PWM signal for controlling the LLC resonant circuit according to the target control quantity. According to the application, the target control quantity can be adjusted in real time according to the load change by considering the current variation of the front and rear sampling periods, so that the dynamic response capability of the LLC resonant circuit is improved.

Description

technical field [0001] The invention belongs to the technical field of circuit control, and in particular relates to a control method, device and terminal equipment of an LLC resonant circuit. Background technique [0002] With the development of switching power supply technology, high efficiency and high power density have become the development trend. Under such circumstances, LLC resonant circuits are more and more widely used in the industry, and at the same time, the industry's requirements for the quality of LLC resonant circuits are also getting higher and higher. [0003] As one of the important indicators for evaluating LLC resonant circuits, dynamic response capability has always been an improvement direction of LLC resonant circuits. In order to improve the dynamic response capability of the LLC resonant circuit, the control algorithm is usually designed based on the principle of adaptive PID in the prior art. The control algorithm completes the switching of PID ...

Claims

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Application Information

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IPC IPC(8): H02M3/156
CPCY02B70/10H02M3/156
Inventor 邱雄张晓明赖熙庭牛兴卓崔玉洁
Owner ZHANGZHOU KEHUA TECH CO LTD
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