Have you used a three-phase rectifier bridge?

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Have you used a three-phase rectifier bridge? [Copy link]

The process of converting AC into DC is called rectification, and the device that performs rectification is called a rectifier. Rectifiers use the unidirectional conductivity of semiconductor diodes to convert AC into DC. The most commonly used is the bridge rectifier, also known as a rectifier bridge. Many people are familiar with single-phase rectifier bridges, but may not have used three-phase rectifier bridges.

Then the question is, can the three-phase rectifier bridge replace the single-phase rectifier?

laker2008

A three-phase rectifier bridge should be able to be used as a single-phase one. The three-phase rectifier bridge is connected to the three-phase power supply of Ua, Ub, and Uc. When using a single-phase power supply, just connect the live wire and the neutral wire to any two phase positions, right? I don't know if this is correct.

miaods2002

It can be used as a single-phase bridge. There is such an example in the Siemens SINAMICS DCM device, but its rectifier element is a thyristor, and the principle is the same.

huo_hu

Six diodes, three up and three down, any two can be used for single phase

led2015

No grounding wire is required. Single-phase connects live wire and neutral wire. Just leave one terminal blank, it will not affect the others.

chunyang

The three-phase rectifier bridge is composed of 6 diodes and has 5 pins, which are three-phase input and positive and negative output. When used for single-phase rectification, take any two-phase input and connect them to the live wire and the neutral wire respectively, and leave the remaining phase input floating.

xutong

UVW

The wiring is yellow, green, red, black and white.

The teacher taught me the formula: Wang Leehom can't tell black from white

Reminded me of my high school

hp880229

It can be used.

fjdeepblue

Of course you can. Three-phase rectification requires one more diode, and using it for single-phase is a waste of two diodes.