Question about rotor reference frame synchronous machine model for rectifier-fed simulation and HILS on RT Box

Hello,

I am working with the “3-phase synchronous machine generator feeding rectifier” demo model in PLECS. In the demo, the salient-pole synchronous machine is implemented using the stator VBR approach.

I tried replacing this machine model with a rotor reference frame based synchronous machine model, but the simulation produces errors and does not run properly. My goal is to obtain a rotor reference frame based synchronous machine model that can operate normally when connected to a rectifier. After that, I would like to extend the model for HILS implementation with RT Box.

I would like to ask the following:

  1. Are there any known issues or limitations when replacing the stator VBR salient-pole synchronous machine in this demo with a rotor reference frame based model?

  2. For a synchronous generator connected to a diode rectifier, is the rotor reference frame machine model generally suitable for stable simulation in PLECS?

  3. If there are recommended modeling practices or required modifications for successful simulation of a rotor reference frame machine with a rectifier load, could you please advise?

  4. For the HILS model on RT Box, would it be better to use the Diode Pair (masked) block used in the demo model, or should I use the standard library diode blocks for the rectifier stage?

My final objective is to build a stable rectifier-connected synchronous generator model based on the rotor reference frame approach, and then use it for RT Box based HILS.

Thank you.

3phasegen_hils_v3.plecs (21.5 KB)

Hi smargrid, please see Electric Machine FAQ . I believe all of your questions are answered in the article. Hope this helps!