Dual Thyristor Module vs Dual Diode Module vs Thyristor Diode Module, what's their difference?

In terms of internal structure, the differences between dual thyristor modules, dual diode modules, and thyristor-diode modules mainly lie in the semiconductor devices they contain and their connection methods:

Dual Thyristor Module:

Internal Structure: Contains two thyristors (SCRs), usually in an anti-parallel or anti-series configuration.

Function: Each thyristor can be controlled individually, used for phase control and rectification in AC circuits. The anti-parallel configuration allows control during both the positive and negative half-cycles of AC power.

Dual Diode Module:

Internal Structure: Contains two diodes, typically connected in a common cathode or common anode configuration.

Function: Used in rectifier circuits, where the two diodes handle the positive and negative half-cycles of AC power, forming full-wave rectification.

Thyristor-Diode Module:

Internal Structure: Contains one or more thyristors and diodes, with specific connection methods depending on application requirements.

Function: Combines the control capability of thyristors with the rectification function of diodes, suitable for circuits requiring both rectification and control.

The design of these modules' internal structures provides specific advantages in different power electronics applications, and the choice should be made based on the specific circuit requirements.