hosam171 Posted June 30, 2010 Report Share Posted June 30, 2010 hi i am studying electrical engineer and i am in final year, my final project is about operating a three phase induction motor using single phase AC, my contain three steps first AC source 220v to 220v DC using rectifier then making a variable DC voltage (0-220v) using a buck converter the previous parts works fine but the big problem is how to invert single phase dc to three phae voltage i search in my country and i found an IC called IR2130 which helps me and i found an application and in it there is a circuit for my project it contain a 555 timer for generating a PWM and a shift register to generate a six PWM for the six mosfets i connect the circuit as on the application note but i had a problem that the output of the(HO1,HO2,HO3)is constant voltage (is it correct??????????????) and the output(LO1,LO2,LO3) are correct PWM i continue connecting the circuit , when i add a dc voltage it seems that there is a short circut thanks Quote Link to comment Share on other sites More sharing options...
Hero999 Posted June 30, 2010 Report Share Posted June 30, 2010 You need at least 311V DC to get 220VAC.Using a square wave is bad for the motor. Quote Link to comment Share on other sites More sharing options...
hosam171 Posted June 30, 2010 Author Report Share Posted June 30, 2010 i want first to test the driver i am applying this circuit with 15 volt dc only (the is in the attachment)do you know a software pregame i can apply it in i use Proteus 7.1 if you a library give it to me Quote Link to comment Share on other sites More sharing options...
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