  The transport industry is undergoing unprecedented technological change. In
the automotive sector, the voices of progress are, among other things, linked
to the partial or total electrification of vehicles. Thanks to bi-directional
charging technology, electric vehicles (EV) could significantly improve their
homeowners' energy balance. For islanded household buildings where a
supplementary turbine generator and photovoltaic (PV) generator are the main
supplies, it is crucial to minimize the running costs and maximize the use of
the PV power. In this paper, a supervisory controller based on fuzzy logic is
proposed to utilize the battery in the EV, while parking, as an interactive
element to replace the auxiliary turbine and to assure that the battery power
and energy do not exceed their design limits and maintaining a stable power
flow. The nanogrid considered in this paper consists of a PV, EV battery, load
and a turbine supplementary unit. The fuzzy logic controller alters the AC bus
frequency, which is used by the local controllers of the parallel units to
curtail the power generated by the PV or to supplement the power from the
turbine unit. The proposed FLC performance is verified by Matlab simulation.
