24-pulse rectifying device and method based on low-complexity current pulse wave multiplication mode

Abstract

According to an 24-pulse rectifying device and method based on a low-complexity current pulse wave multiplication mode. A self-coupling phase-shifting transformer in the device only has 12 pulses, the final input current is 24 pulses, a zero-sequence current is reliably blocked through a zero-sequence blocking reactor, the system is made to operate more reliably, and the effect of doubling the current pulse waves is achieved through a balance reactor and two current pulse wave multiplication diodes. According to the invention, 24-pulse rectification is realized through the 12-pulse self-coupling phase-shifting transformer. According to the current pulse wave multiplication mode, controllable devices and drive circuits are not added, rectifier bridges are not added, the number of the pulse waves of the rectifier is increased only through one balance reactor and two diodes, and the rectifier has the advantages of being simple in structure, easy to achieve, small in size and low in cost.

Description

technical field [0001] The invention relates to the technical field of multi-pulse rectification, in particular to a 24-pulse rectification device and method based on a low-complexity current pulse multiplication method. Background technique [0002] At present, multi-pulse rectification technology is mostly used in aviation to obtain power from the grid to supply power for its system. According to the number of output voltage pulses, multi-pulse rectification technology can be divided into 12 pulses, 18 pulses, 24 pulses, 30 pulses, 36 pulses, etc., the number of pulses The more the current harmonic iTHD content of the mains input side is, the smaller the pollution to the power grid is. The volume and weight of the multi-pulse rectification system are gradually decreasing with the advancement of technology. Initially, the equivalent capacity of the isolated multi-pulse transformer is about 1.03%, and the system volume and weight are relatively large. To about 18%, the volu...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a 24-pulse rectification device and method based on a low-complexity current pulse multiplication method, aiming to solve the problem in the prior art that the more the number of rectification pulses is, the higher the complexity of the auto-phase-shifting transformer is, and the reduction in The complexity of the auto-phase-shifting transformer improves the ability of harmonic suppression

Images