The intermediate voltage across the capacitor is fed back to {HEAD ~ the second controller} which in {TAIL ~ turn} changes the PWM signal to regulate the intermediate voltage 
The intermediate voltage across the capacitor is fed back to { HEAD ~ the second controller } which in { TAIL ~ turn } changes the PWM signal to regulate the intermediate voltage
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH