Creating an 18-pulse AC to DC transformer with a thyristor rectifier in Simulink involves setting up a three-phase system with specific configurations. Here's how you can find and configure the necessary blocks:
- In Simulink, there is no specific block that directly provides a Delta-configured three-phase source. You need to design this configuration manually. To simulate a Delta-connected three-phase source, use three individual "AC Voltage Source" blocks and connect them in a Delta configuration. This involves connecting the positive terminal of each source to the negative terminal of the next source in a closed loop.
- For 3 phase Delta to Wye transformer, use "Three-Phase Transformer (Two Windings)" block to configure the windings. This block does not have a direct parameter to control phase shift beyond the shifts provided by the winding configurations (like Delta-Wye or Wye-Delta, which give a 30-degree shift). If you need a specific phase shift by cascading multiple transformers.
For more details look into the following documentation:
Hope this helps!
