Active power decoupling method of AC/DC converter circuit

A technology for converting circuits and converters, which is applied in the direction of converting AC power input into DC power output, output power conversion devices, electrical components, etc., and can solve the problems of auxiliary circuits increasing the system volume, unfavorable application and promotion, etc.

Pending Publication Date: 2022-03-01
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing disadvantages include the need to add additional components, the need to adopt complex auxiliary circuit c...

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  • Active power decoupling method of AC/DC converter circuit
  • Active power decoupling method of AC/DC converter circuit
  • Active power decoupling method of AC/DC converter circuit

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Embodiment Construction

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus their repeated descriptions will be omitted.

[0035] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or mo...

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Abstract

The invention relates to an active power decoupling method of an AC/DC converter circuit. The method comprises the following steps: sampling an output voltage of an AC/DC converter circuit, and comparing the generated sampling voltage with a preset reference value; when the sampling voltage is larger than a reference value, a third switch tube and a fourth switch tube are conducted at the same time, so that a first bus capacitor and a second bus capacitor of the AC/DC converter circuit output power to a transformer leakage inductor, and decoupling between the output power and the bus voltage is achieved. According to the single-phase AC/DC converter circuit based on power confluence control, active power decoupling between the output power and the bus voltage can be achieved only through simple control, the capacitance capacity is reduced, averaging of the output instantaneous power of the converter is achieved, and the purpose of decoupling the output power and the direct-current bus voltage is achieved.

Description

technical field [0001] The present disclosure relates to the field of power electronics, in particular, to an active power decoupling method for an AC / DC converter circuit. Background technique [0002] The function of the single-phase rectifier power supply is to convert the alternating current of the power grid into the direct current required by electronic equipment. It is now widely used in household electronic equipment such as computers and mobile phone charging adapters. The AC / DC converter is an indispensable part of the rectification power supply system, and its function is to realize power factor correction and output voltage regulation. Under the condition of unity power factor, its input power will contain twice the power frequency pulsation. However, since the output power required by the load is constant, traditional AC / DC converters use large-capacity electrolytic capacitors to absorb this inherent double-frequency power pulsation, and realize input and outpu...

Claims

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Application Information

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IPC IPC(8): H02M7/219H02M1/08
CPCH02M7/219H02M1/08
Inventor 单振宇司雨菲
Owner BEIHANG UNIV
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