filter design for SPWM inverter

[--BawA--]

which type of capacitor should be used to design a low pass lc filter for the output of the h-bridge , driven by spwm of 16khz carier frequency and 50hz fundamental frequency? i have used an electrolytic capacitor for filtration but as i turned on my circuit ,,my mosfets oh h bridge blown out,,,
plz reply

 

[sabouras]

http://www.calculatoredge.com/electronics/ch pi low pass.htm

 

[madhu hegde]

http://www.calculatoredge.com/electronics/ch pi low pass.htm

hello check this.... it will help you ..
www.epcos.com/web/generator/Web/Sections/.../Capacitors__UPS__PB

madhu

 

[HARSHID1993]

which type of capacitor should be used to design a low pass lc filter for the output of the h-bridge , driven by spwm of 16khz carier frequency and 50hz fundamental frequency? i have used an electrolytic capacitor for filtration but as i turned on my circuit ,,my mosfets oh h bridge blown out,,,
plz reply

IT'S neccesary to use AC capacitor in filter because ur output is now in AC so be care full with thiz

 

[sabouras]

See the example filter. At 4KHz it reduce about 100db and has 0.2db at 50HZ