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Control method of direct alternating current-alternating current conversion circuit and power adjusting method

A technology for converting circuits and control methods, which is applied in the field of control and can solve problems such as voltage spikes in direct AC-AC conversion circuits

Pending Publication Date: 2021-12-07
XIAMEN KIWI MICROELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to provide a low-cost control method, device, equipment, system, power regulation method and storage medium for the above technical problems, so as to solve the problem of voltage spikes in direct AC-AC conversion circuits

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  • Control method of direct alternating current-alternating current conversion circuit and power adjusting method
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  • Control method of direct alternating current-alternating current conversion circuit and power adjusting method

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Embodiment Construction

[0056] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0058] It can be understood that the terms "first", "second" and the like used in this application may be...

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Abstract

The invention relates to a control method of a direct alternating current-alternating current conversion circuit and a power regulation method, the control method is applied to the direct alternating current-alternating current conversion circuit, and the direct alternating current-alternating current conversion circuit is controlled to work in a working mode by receiving an input alternating current voltage signal according to the input alternating current voltage signal. Switching state information is obtained, the target half-bridge unit and the continuous duration of the working state of the target half-bridge unit are determined according to the switching state information, and finally the target half-bridge unit is controlled to maintain the continuous duration of the working state so as to control the conversion circuit to switch from one working mode to another working mode. The load connected with the conversion circuit is provided with the follow current path, so that the voltage spike can be eliminated only by continuing the working state of at least one of the first half-bridge unit and the second half-bridge unit in the conversion circuit for a period of time, additional elements do not need to be added in the direct alternating current-alternating current conversion circuit, the element cost is reduced, and the control method is easy to implement.

Description

technical field [0001] The present application relates to the technical field of control, in particular to a control method and a power regulation method of a direct AC-AC conversion circuit. Background technique [0002] The direct AC-AC conversion circuit (DAAC, Direct AC-AC Converter) has many advantages such as high specific efficiency, simple topology, and small device stress. [0003] The specific structure of the direct AC-AC conversion circuit is as follows: figure 1 shown. When switching the working mode of the direct AC-AC conversion circuit, if the timing of the commutation process is not paid attention to, voltage spikes will be caused. Taking the switching from the positive half-cycle working mode to the dead-zone working mode as an example, when switching the working mode, it is necessary to open the first switch Q1 and the first switch Q3, and close the fourth switch Q4, but in fact, these switching actions cannot guarantee Completed at the same time, if th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/293H02M1/12
CPCH02M5/293H02M1/12
Inventor 周宗杰喻辉洁
Owner XIAMEN KIWI MICROELECTRONICS TECH CO LTD
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