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Power supply switching control method and device

A technology of power switching and control methods, which is applied in the direction of output power conversion devices, control/regulation systems, and high-efficiency power electronic conversion, and can solve problems such as the inability to realize seamless switching of output voltages

Active Publication Date: 2021-08-17
深圳市洛仑兹技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a power switching control method and device to alleviate the problem in the prior art that the power supply is in an intermittent state for a period of time due to the discontinuity of the drive configuration and the control loop, and the seamless output voltage cannot be achieved. Technical issues with switching

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  • Power supply switching control method and device

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Embodiment 1

[0033] According to an embodiment of the present invention, an embodiment of a power switching control method is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, Although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0034] image 3 A flow chart of a power switching control method provided by an embodiment of the present invention, such as image 3 As shown, the method includes the following steps:

[0035] Step S101, when the target power supply is working in the target working area, obtain the current output voltage of the target power supply. Wherein, the target power supply includes a bidirectional LLC resonant power supply, and the target working region is an inductive region between two system resonance frequency ...

Embodiment 2

[0080] The embodiment of the present invention provides a power switching control device, the power switching control device is mainly used to implement the power switching control method provided in Embodiment 1 above, the power switching control device provided by the embodiment of the present invention will be described in detail below.

[0081] Figure 6 It is a schematic structural diagram of a power switching control device provided by an embodiment of the present invention. Such as Figure 6 As shown, the power switching control device mainly includes: a first acquisition unit 11, a first determination unit 12 and an update switching control unit 13, wherein:

[0082] The first acquisition unit 11 is used to acquire the current output voltage of the target power supply when the target power supply is working in the target working area; wherein, the target power supply includes a bidirectional LLC resonant power supply, and the target working area is two system resonanc...

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PUM

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Abstract

The invention provides a power supply switching control method and device, and relates to the technical field of power electronics and control, and the method comprises the steps: obtaining the current output voltage of a target power supply when the target power supply works in a target working region; then determining an actual switching period of the target power supply through a preset voltage control loop according to the deviation between the preset expected voltage and the current output voltage; and finally, updating configuration information of the target power supply under the preset driving configuration according to the actual switching period, and performing switching control between rectification and inversion on the target power supply through the configuration information. The configuration information comprises a target switching period. Whether the rectification is switched to the inversion or the inversion is switched to the rectification, seamless switching of the target power supply in the area can be realized in a mode of updating the configuration information under the same preset driving configuration through the output of the same preset voltage control loop.

Description

technical field [0001] The present invention relates to the field of power electronics and control technology, in particular to a power switching control method and device. Background technique [0002] The existing power switching control strategy is: for the control of the forward state of the bidirectional LLC (Resonant Converters, resonant conversion circuit) resonant power supply, it is necessary to set up a driving configuration and a control loop; for the reverse state of the bidirectional LLC resonant power supply control, another drive configuration and another control loop need to be set up. When using the existing power switching control strategy to control the switching of the above-mentioned power sources, since the drive configuration and the control loop are not continuous, it is easy to cause the power supply to be in an intermittent state for a period of time, and seamless switching of the output voltage cannot be realized. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M7/48
CPCH02M3/3353H02M7/48Y02B70/10
Inventor 魏学海张勇吴斌陈炎坤
Owner 深圳市洛仑兹技术有限公司