adnan012
Advanced Member level 1
hi,
What type of feedback amplifier (type-2,type-3 or PI) is used in a pure sine wave inverter?
Suppose an inverter consists of a h-bridge and a low frequency iron core toroidal transformer. H-bridge is derived by sinusoidally modulated PWM (20KHz). At the secondary of the transformer there is a filter to get filtered 220v sine wave. The output voltage are scaled by a small step-down transformer and are feed to ADC of the micro-controller. The micro-controller adjusts the pwm duty cycle according to the output voltage.
What is the best technique of sensing output voltage and current in this type of inverters?
What type of feedback amplifier (type-2,type-3 or PI) is used in a pure sine wave inverter?
Suppose an inverter consists of a h-bridge and a low frequency iron core toroidal transformer. H-bridge is derived by sinusoidally modulated PWM (20KHz). At the secondary of the transformer there is a filter to get filtered 220v sine wave. The output voltage are scaled by a small step-down transformer and are feed to ADC of the micro-controller. The micro-controller adjusts the pwm duty cycle according to the output voltage.
What is the best technique of sensing output voltage and current in this type of inverters?