PFC forward full-bridge-based intelligent type correction filtering voltage conversion circuit

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: 2017-03-22
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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  • PFC forward full-bridge-based intelligent type correction filtering voltage conversion circuit
  • PFC forward full-bridge-based intelligent type correction filtering voltage conversion circuit
  • PFC forward full-bridge-based intelligent type correction filtering voltage conversion circuit

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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 corrected wave voltage conversion circuit based on PFC forward full bridge, combining Figure 1 to Figure 3 As shown, it includes:

[0021] An input unit 10 for outputting DC voltage;

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

[0023] An isolated dual-tube forward converter 30, including a first switching tube Q6, a second switching tube Q7, a first freewheeling diode D3, a second freewheeling diode D2, a second rectifying diode D5, a transformer T1, and a filter inductor L3 and the first electrolytic capacitor C3, the drain of the first switching tube Q6 is connected to the output terminal of the PFC boost unit 20, and the source of the first switching tube Q6 is connected to the first end of the primary w...

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PUM

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Abstract

The invention discloses a PFC forward full-bridge-based intelligent type correction filtering voltage conversion circuit. The PFC forward full-bridge-based intelligent type correction filtering voltage conversion circuit comprises an input unit, a PFC voltage boosting unit, an isolation type two-transistor forward converter and an inversion phase reversal unit, wherein the isolation type two-transistor forward converter comprises a first switching tube, a second switching tube, a first fly-wheel diode, a second fly-wheel diode, a second rectifying diode, a transformer, a filtering inductor, and a first electrolytic capacitor; the drain of the first switching tube is connected to the output end of the PFC voltage boosting unit; the source of the first switching tube is connected to the first end of a primary winding of the transformer; the second end of the primary winding of the transformer is connected to the drain of the second switching tube; the source of the second switching tube is connected with a front leading end; the gate of the first switching tube and the gate of the second switching tube are used for connecting the same PWM signals; and the inversion phase reversal unit is used for performing inversion conversion on the output voltage of the isolation type two-transistor forward converter and outputting an alternating current. By adoption of the intelligent type correction filtering voltage conversion circuit, the PF value and the output voltage quality can be improved.

Description

technical field [0001] The invention relates to a voltage conversion circuit, in particular to an intelligent modified wave voltage conversion circuit based on a PFC forward 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 correction wave voltage based on PFC forward full bridge, which can increase the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/458H02M1/12H02M7/5395H02M1/42H02M3/335
CPCH02M1/12H02M1/4225H02M3/33569H02M5/458H02M7/5395Y02B70/10
Inventor 廖志刚
Owner GUANGDONG BESTEK E COMMERCE CO LTD
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