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Self-excited bridgeless rectifier

A self-excited, rectifier technology, applied in the direction of instruments, DC power input conversion to DC power output, adjustment of electrical variables, etc.

Pending Publication Date: 2019-05-21
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the self-excited converter is more widely used than the self-excited converter at present, the advantage of the self-excited converter in the startup of the low-voltage input workplace is unmatched by the self-excited converter.

Method used

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  • Self-excited bridgeless rectifier

Examples

Experimental program
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Effect test

Embodiment 1

[0064] refer to figure 1 , a single-phase input form of a self-excited bridgeless rectifier includes a self-excited DC-DC converter 1 with an inductance on the input side and a self-excited DC-DC converter 2 with an inductance on the input side, and a self-excited DC-DC converter 2 with an inductance on the input side The self-excited DC-DC converter j has the characteristics of port vij+, port vij-, port voj+, port voj-, and the input current is reversible. The value of j ranges from 1 to 2. One end of the single-phase AC power supply vac and the inductor are located The port vi1+ of the self-excited DC-DC converter 1 on the input side is connected, and the other end of the single-phase AC power supply vac is connected to the port vi2+ of the self-excited DC-DC converter 2 whose inductance is located on the input side, and the inductor is located on the input side. The port vi1- of the self-excited DC-DC converter 1 is connected to the port vi2- of the self-excited DC-DC conv...

Embodiment 2

[0077] refer to figure 2 , a multi-phase input form of a self-excited bridgeless rectifier includes a self-excited DC-DC converter 1 with an inductance on the input side to a self-excited DC-DC converter n with an inductance on the input side, and a self-excited DC-DC converter n with an inductance on the input side The self-excited DC-DC converter j has the characteristics of port vij+, port vij-, port voj+, port voj-, and input current reversibility. The value range of j is from 1 to n. Multi-phase AC power supply includes single-phase AC power supply vac1 To the single-phase AC power supply vacn, one end of the single-phase AC power supply vacj is connected to the port vij+ of the self-excited DC-DC converter j whose inductance is located on the input side, and the inductor is located at the port of the self-excited DC-DC converter j on the input side voj+ is connected to one end of the load, the inductance is located at the port voj- of the self-excited DC-DC converter j ...

Embodiment 3

[0090] refer to Figure 14 , a single-phase input form of a self-excited bridgeless rectifier includes a self-excited DC-DC converter 1 with a switch on the input side and a self-excited DC-DC converter 2 with a switch on the input side, and a self-excited DC-DC converter 2 with a switch on the input side Self-excited DC-DC converter 1 has port vi1+, port vi1-, port vo1+ and port vo1-, self-excited DC-DC converter 2 with the switch on the input side has port vi2+, port vi2-, port vo2+ and port vo2-, the self-excited DC-DC converter 1 with the switch on the input side and the self-excited DC-DC converter 2 with the switch on the input side both have the characteristics of reversible input current, and one end of the single-phase AC power supply vac is connected to the switch at the The port vi1+ of the self-excited DC-DC converter 1 on the input side is connected, and the port vi1- of the self-excited DC-DC converter 1 with the switch on the input side is connected to the self-...

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Abstract

The invention discloses a self-excited bridgeless rectifier. The self-excited bridgeless rectifier has a single-phase or multi-phase input form; the self-excited bridgeless rectifier comprises a self-excited DC-DC converter with a plurality of inductors on the input side, and a self-excited DC-DC converter with a plurality of switches on the input side. The self-excited DC-DC converter with the inductors on the input side and the self-excited DC-DC converter with the switches on the input side are both used for generating required oscillation by utilizing the inconsistence of the interiors thereof to enable the self-excited bridgeless rectifier to work, and the requirements of various voltage conversion can be met. The self-excited bridgeless rectifier has the characteristics of easy oscillation starting and the like, and is suitable for working occasions with low alternating-current voltage input.

Description

technical field [0001] The invention relates to single-phase and multi-phase rectifiers (AC-DC), especially suitable for working occasions with low AC voltage input, such as energy collection, LED driving, auxiliary power supply and the like. Background technique [0002] Common DC-DC converters with inductance on the input side include Boost converters, Cuk converters, Sepic converters, and Flyback converters; common DC-DC converters with switches on the input side include Buck converters and Buck-Boost converters Transformer, Zeta Transformer and Flyback Transformer. Whether it is a DC-DC converter with an inductance on the input side or a DC-DC converter with a switch on the input side, they all have two forms: self-excited and self-excited. Although the self-excited converter is more widely used than the self-excited converter at present, the advantage of the self-excited converter in the starting aspect of the low-voltage input workplace is unmatched by the self-excite...

Claims

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Application Information

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IPC IPC(8): H02M3/158
Inventor 陈怡
Owner ZHEJIANG UNIV OF TECH
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