establishing a signal, PMIN, representing {HEAD ~ a predetermined minimum output power} produced by {TAIL ~ said second motor generator set}, 
produced by
establishing a signal , PMIN , representing { HEAD ~ a predetermined minimum output power } produced by { TAIL ~ said second motor generator set } ,
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH