epp
Full Member level 5
I build simulation model of an sigma delta modulator (analog input digital output) in order to control transistors in 3phase full bridge resonant inverter. In negative feedback loop I have 1bit D/A converter and it gives +-5V.
Reference voltage is 5V*sin(2*pi*50Hz*time). I couldn't rise this voltage at 220V because of op amp input is max 30V (V+ - V-).
I want to get (at resonant dc link inverter output) votage of 220VAC sin. Voltage of dc link is 400VDC.
What should I do with my reference signal in order to control amplitude of output voltage (to get modulation index of 0.5, 0.7, 1.0 etc.)
Thanks.
Reference voltage is 5V*sin(2*pi*50Hz*time). I couldn't rise this voltage at 220V because of op amp input is max 30V (V+ - V-).
I want to get (at resonant dc link inverter output) votage of 220VAC sin. Voltage of dc link is 400VDC.
What should I do with my reference signal in order to control amplitude of output voltage (to get modulation index of 0.5, 0.7, 1.0 etc.)
Thanks.