Simulink problem- voltage increase

how to make voltage increase in certain amount of time in simulink..for example, i set my rated voltage =220 V.. for 1.6 sec, i want the rated voltage become 220/sqrt(3).. help please..i want to make wye delta starting for my induction motor..

[Walter Roberson]

Would this be a SimPower question?

[slasherzz22]

emm...yes..electric machine..can u help me please..

Answer 1

[Dr. Siva Malla]

you can generate reference voltage signal by using step. like up to 3 sec, step is 220V after the steep is 220/1.732, like that...and give this signal to sin generator..