Switching power supply circuit control method and device, and power supply system

A technology of switching power supply circuit and control method, which is applied in the direction of circuit device, emergency power supply arrangement, output power conversion device, etc., can solve the problems of switching and affecting the power supply mode, etc., and achieve the effect of smooth switching and improving the quality of power supply

Pending Publication Date: 2022-02-18
KEHUA DATA CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a switching power supply circuit control method and device, and a power supply system to solve the problem in the prior art that the switching of power supply modes is affected by the presence of DC components

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  • Switching power supply circuit control method and device, and power supply system
  • Switching power supply circuit control method and device, and power supply system
  • Switching power supply circuit control method and device, and power supply system

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Embodiment Construction

[0038] 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.

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0040] Please refer to figure 1 , figure 1 It is a schematic flowchart of a switching power supply circuit control method provided by an embodiment of the present invention. The switching power suppl...

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Abstract

The invention provides a switching power supply circuit control method and device and a power supply system, and the method is applied to the starting of a target switching process, the target switching process is the process of switching the power supply system from a first power supply mode to a second power supply mode, and a power supply circuit corresponding to the second power supply mode is a target switching power supply circuit. The method comprises the steps of obtaining a voltage direct-current component and a current direct-current component output by the target switching power supply circuit after detecting that the target switching power supply circuit is switched on, determining a voltage direct-current component error based on the voltage direct-current component, and determining a current direct-current component adjusting quantity based on the current direct-current component; determining a reference phase voltage adjustment amount based on the voltage direct-current component error and the current direct-current component adjustment amount; and adjusting a preset reference phase voltage according to the reference phase voltage adjustment amount, and controlling the target switching power supply circuit based on the adjusted reference phase voltage. The smooth switching of the power supply modes can be ensured, so that the power supply quality is ensured.

Description

technical field [0001] The invention belongs to the technical field of parallel machine control, and more specifically relates to a switching power supply circuit control method and device, and a power supply system. Background technique [0002] For equipment such as dynamic voltage restorer or UPS working in energy-saving operation mode, it is necessary to switch the power supply mode according to the quality of the power grid. [0003] During this process, the inventors of the present application discovered the following problem: when switching the power supply mode, if there is a DC component in the system circuit or the load has a DC component, it may cause SCR (Silicon Controlled Rectifier, Thyristor rectifiers) cannot be turned off (especially in systems without a neutral line), which affects the switching of power supply modes, thereby affecting the quality of power supply. Contents of the invention [0004] The purpose of the present invention is to provide a swi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02M1/00
CPCH02J9/06H02J9/068H02M1/00
Inventor 周超伟刘艺超陈文佳詹万兴
Owner KEHUA DATA CO LTD
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