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A dual-tube isolated converter and its control method

A technology of tube isolation and converter, which is applied in the field of double tube isolation converter and its control, can solve the problems of output rectifier diode reverse recovery, large space occupation, large switching loss, etc., and achieve zero current turn-on and converter Work efficiently and reduce the effect of components

Active Publication Date: 2018-06-22
东台城东科技创业园管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional dual-tube forward converter has shortcomings such as reverse recovery of the output rectifier diode and voltage oscillation. The volume is generally large and takes up a lot of space
The traditional two-tube forward converter adjusts and controls by adjusting the duty cycle of the switching tube, the adjustment method is single, and it is impossible to adjust in a targeted manner to improve the efficiency of the converter

Method used

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  • A dual-tube isolated converter and its control method
  • A dual-tube isolated converter and its control method
  • A dual-tube isolated converter and its control method

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Embodiment Construction

[0021] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0022] 1. A dual-tube isolated converter is proposed.

[0023] The circuit topology of the dual-tube isolated converter is as follows: figure 1 shown, including the transformer T r (primary side, secondary side), switching tube Q 1 , Q 2 (D 1 、D 2 Respectively corresponding body diode), diode D 3 、D 4 、D 5 , snubber inductance L r (can be realized by transformer leakage inductance), filter capacitor C o , load resistance R o . The switch tube may be a MOS tube.

[0024] Switch tube Q 1 source terminal with diode D 3 connected to the cathode, and with the snubber inductor L r One end of the connection; switch tube Q 2 drain terminal with diode D 4 connected to the anode terminal, and with the transformer T r The connection of the opposite end of the primary winding; the switch tube Q 1 Drain Terminal, Diode D 4 The cathode terminal is...

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Abstract

The invention discloses a double-tube isolated converter and its control method, which solves the problems of parasitic oscillation and reverse recovery of the output rectifier diode of the traditional double-tube forward converter, realizes the zero-current turn-on of the switch tube, and reduces the The use of magnetic components, and a new segmented optimization combined control strategy for this type of converter is proposed.

Description

technical field [0001] The invention belongs to the field of power electronic converters, and in particular relates to a double-tube isolation converter and a control method thereof. Background technique [0002] The dual-tube forward converter is suitable for high input voltage and small and medium power occasions. It has simple circuit structure, low switch tube stress, and high conversion efficiency. It has been widely used in fields such as power supply systems in strong electromagnetic environments. However, the traditional dual-tube forward converter has shortcomings such as reverse recovery of the output rectifier diode and voltage oscillation. The volume is generally large and takes up a lot of space. The traditional two-tube forward converter is regulated and controlled by adjusting the duty ratio of the switch tube. The adjustment method is single, and it cannot be adjusted in a targeted manner to improve the efficiency of the converter. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/3353H02M1/0054Y02B70/10
Inventor 阚加荣吴云亚许志华姚志垒李小凡陈冲汤雨
Owner 东台城东科技创业园管理有限公司
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