A 3 phase fully controlled bridge converter is fed through star-delta transformer. The converter is operated at a firing angle of 30 degrees. Assuming the load to be a RL load and load current to be virtually constant at 1 pu and transformer to be an ideal one, how will be the input phase current waveform look like ?
Edit:
I was expecting the following result
but to my surprise the answer is the following waveform.
Definitely I'm making some mistake, please tell me how the waveform came.