establishing a signal PMAX, representing {HEAD ~ a predetermined maximum output power} produced by {TAIL ~ said first motor generator set}, 
establishing a signal PMAX , representing { HEAD ~ a predetermined maximum output power } produced by { TAIL ~ said first motor generator set } ,
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