abc-dq Transformation

Hi I am currently doing a project on boost type PWM rectifiers,i have to do a simulation of my ckt in dis regard. As i m a new user of MATLAB- simulink i need help! pls can anyone give me example for performing abc-dq transforamtion in simulink? i dnt understand how to give inputs. there are 3 phases and oly one parameter stating abc, how do i connect the other inputs.. pls enlighten me on this.

Answer 1

[Ravikrishna sivakumar]

use mux block to multiplex your currents then give it to abc of the abcto dq converter..use discrete virtual pll block to generate sincos and connect to sin_cos block..

[sujata pujari]

sir please tell in simulink library where i can get discrete virtual pll

[Walter Roberson]

http://www.mathworks.com/help/physmod/sps/powersys/ref/pll3ph.html

http://www.mathworks.com/help/physmod/sps/examples/three-phase-programmable-source-pll-voltage-and-power-measurement.html

Virtual blocks: see http://www.mathworks.com/help/simulink/ug/nonvirtual-and-virtual-blocks.html

At the moment I do not see how a pll block could be virtual.

[sujata pujari]

thank you for your response, sir i attaching one paper in that paper in fig 2, the out of the PLL are sin and cosin signal these are given to park's transformation, i am not geting which type PLL i need to use please reply

[paranandi lakshmi narayana]

sir i had devloped PMSG by using equations the output i obtained is direct and quadrature axis voltages by using dq to abc i had converted it to abc then i need t connect that voltages to diode bridge rectifier inputs but both the ports are of different not connected please help me how can i connect