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Intelligent correction wave voltage conversion circuit based on PFC dual full bridge

A conversion circuit and intelligent technology, applied in the direction of high-efficiency power electronic conversion, output power conversion device, electrical components, etc., can solve the problems of low output voltage quality, low PF value, poor safety and reliability, etc.

Inactive Publication Date: 2017-04-26
GUANGDONG BESTEK E COMMERCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current AC-AC portable equipment market is a non-isolated topology circuit with low PF value, low output voltage quality, and poor safety and reliability.

Method used

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  • Intelligent correction wave voltage conversion circuit based on PFC dual full bridge
  • Intelligent correction wave voltage conversion circuit based on PFC dual full bridge
  • Intelligent correction wave voltage conversion circuit based on PFC dual full bridge

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Embodiment Construction

[0019] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0020] The invention discloses an intelligent modified wave voltage conversion circuit based on PFC double full bridge, combining Figure 1 to Figure 3 As shown, it includes:

[0021] An input rectification and filtering unit 10, the input end of which is connected to the power grid for rectifying and filtering the power grid voltage;

[0022] A PFC step-up unit 20, connected to the output end of the input rectification filter unit 10, for boosting the output voltage of the input rectification filter unit 10;

[0023] A full-bridge DC-to-DC isolation converter unit 30 includes a first switching tube Q6, a second switching tube Q7, a transformer T1, a first rectifier bridge (D5, D6, D7, D8), an eighth switching tube Q8, a first switching tube Q8, and a first switching tube Q8. Nine switching tubes Q9 and a first electrolytic capacitor C3, the dr...

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Abstract

The invention discloses an intelligent correction wave voltage conversion circuit based on a PFC dual full bridge. The circuit comprises an input rectification filtering unit, a PFC boosting unit, and a full-bridge DC-DC isolation transformer unit, a drain electrode of a first switch tube is connected to an output terminal of the PFC boosting unit, a source electrode of the first switch tube is connected to a first terminal of a primary winding of a transformer, a drain electrode of a second switch tube is connected to the source electrode of the first switch tube, a source electrode of the second switch tube is connected to the front-end ground, a drain electrode of an eighth switch tube is connected to the output terminal of the PFC boosting unit, a source electrode of the eighth switch tube is connected to a second terminal of the primary winding of the transformer, a drain electrode of a ninth switch tube is connected to the source electrode of the eighth switch tube, a source electrode of the ninth switch tube is connected to the front-end ground, a secondary winding of the transformer is connected with an input side of a first rectification bridge in parallel, and a positive electrode of an output side of the first rectification bridge is regarded as an output terminal and connected to an inversion phase-inversion unit. According to the circuit, the quality of the output voltage can be improved.

Description

technical field [0001] The invention relates to a voltage conversion circuit, in particular to an intelligent correction wave voltage conversion circuit based on a PFC double full bridge. Background technique [0002] In the prior art, the intelligent buck-boost conversion device from AC to AC is also called a travel plug-in strip. In this device, the modified wave voltage conversion circuit is the key circuit, which is a circuit that can realize AC-AC conversion. In the AC-AC conversion, it can realize the functions of step-up and step-down and stabilize the voltage and frequency. However, most of the current AC-AC portable equipment market is a non-isolated topology circuit with low PF value, low output voltage quality, and poor safety and reliability. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a safe and reliable intelligent modified wave voltage conversion circuit based on PFC double full bridge, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/219H02M3/335H02M1/42
CPCH02M1/4258H02M3/33561H02M3/33592H02M7/219Y02B70/10
Inventor 何伟
Owner GUANGDONG BESTEK E COMMERCE CO LTD
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