In contrast, when the wind speed V is lower than {HEAD ~ the cut} in {TAIL ~ wind speed Vcut} — in , the wind turbine generator 1 switches the operation to the idling mode  
in
In contrast , when the wind speed V is lower than { HEAD ~ the cut } in { TAIL ~ wind speed Vcut } — in , the wind turbine generator 1 switches the operation to the idling mode
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH