Hello everyone,
Check the scheme bellow.
I used two filtering capacitors of 2200 MFD, each one supports 400V DC, and they're connected in series. So the capacitor bank ( the two in series) can support up to 750V.
I was applying only 535V DC on the capacitor bank. The PWM sampling frequency (sawtooth frequency ) was 1000Hz.
The phase current was only 1.5A, so it didn't reach the max current supported by the motor which is 2.75A.
The motor was making some weird noise, but i was controlling it's speed with no problem.
After a while of functioning, about 2 minutes, the two capacitors exploded.
So, can anyone tell me why did the capacitors explode?
Thanks a lot in advance for your answers.
.
Check the scheme bellow.
I used two filtering capacitors of 2200 MFD, each one supports 400V DC, and they're connected in series. So the capacitor bank ( the two in series) can support up to 750V.
I was applying only 535V DC on the capacitor bank. The PWM sampling frequency (sawtooth frequency ) was 1000Hz.
The phase current was only 1.5A, so it didn't reach the max current supported by the motor which is 2.75A.
The motor was making some weird noise, but i was controlling it's speed with no problem.
After a while of functioning, about 2 minutes, the two capacitors exploded.
So, can anyone tell me why did the capacitors explode?
Thanks a lot in advance for your answers.