Three-phase 380V rectified voltage

There are several concepts that need to be clarified before this:

Mains 220
Generally refers to domestic 220V alternating current, that is, alternating current with an effective voltage of 220V±10%.

Three-phase alternating current
Generally, it refers to a power supply composed of three alternating potentials with the same frequency, equal amplitude and 120° phase difference.There are three-phase 380 and three-phase 220.

Three-phase 380
Generally, it means that the three live wires are 380v in pairs, and each live wire and the neutral wire are 220v.

Three-phase 220
Generally, it means that the three live wires are 220v in pairs, and the neutral wire (generally does not lead to the neutral wire) is 220 divided by the square root of 3,About 130v; three-phase 220v is not common, usually used on some imported three-phase motors.To obtain three-phase 220v electricity, it is generally necessary to step down through three-phase 380v. Our ordinary industrial electricity is three-phase 380V, which means that the voltage between phases is 380V, and the voltage between the neutral point N is 220V. Import and exportThe equipment is commonly used to three-phase 220V, which is the standard of some countries, indicating that the voltage between phases is 220V, and the voltage at point N is only 110V.

Rectification
Generally, it refers to the operation in which alternating current is converted into direct current after passing through the rectification circuit.

Bridge Rectifier
Bridge rectifiers, also known as rectifier bridge stacks, are the most commonly used circuits for rectification using the unidirectional conductivity of diodes, and are often used to convert alternating current to direct current.

Rectified voltage
Only the three-phase 380v rectified voltage is calculated here.The DC voltage at the output terminal of the three-phase 380v bridge rectifier is 2.34 times the input phase voltage. The three-phase bridge rectifier outputs six peaks per cycle, which is six-pulse rectification. The width of each peak is π/3, and its peak value is1.414*380=537V, its effective value is 1.35*380=513V.

Summary:
The effective voltage after three-phase 380V rectification is 513V-537V.
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Original link: https://blog.csdn.net/w492901074/article/details/119765380