Problem with 3-phase rectifier ...

[atifsheikh_91]

I designed rectifier , simulated it and it was working correctly.

Then I connected the hardware to the 3-phase supply; but I dont know why there was a huge blast and the circuit bursted

can anyone help me out. ? I dont want to use transformer.

 

[kak111]

Diode bridge is OK.
But capacitor 400Vdc ....
If supply is 220V line to neutral and 400V line-line
then bridge DC-voltage is about 570Vminimum and capacitor 400Vdc is blasted away.

Capacitor voltage should be at least 400V * SQR(2) + 10% = about 630Vdc

 

[atifsheikh_91]

Diode bridge is OK.
But capacitor 400Vdc ....
If supply is 220V line to neutral and 400V line-line
then bridge DC-voltage is about 570Vminimum and capacitor 400Vdc is blasted away.

Capacitor voltage should be at least 400V * SQR(2) + 10% = about 630Vdc

I cant find out Capacitor Voltage greater then 450V
Can I connect 2 440V Capacitor in series