MATLAB help- Program for output waveform

Hi,

I am new here and this is my first thread. I want a help on drawing an output waveform of a six pulse full wave converter using MATLAB where the Dc output with firing angle is also present.

I used 'for loop' to draw an output but could not complete it.

Line to neutral Voltage -
van=Vm*sin(wt);
vbn=Vm*sin(wt-2*pi/3);
vcn=Vm*sin(wt+2*pi/3);

Line to line voltage-
Vab=1.732*Vm*sin(wt+pi/6);
Vbc=1.732*Vm*sin(wt+5*pi/6);
Vca=1.732*Vm*sin(wt-pi/2);

DC output voltage
Vdc=2*(Vm/pi)*cos(a);

i have attached the figure of output waveform. Now I want help for a suitable program to draw the output.

Thank you in advance.