POWER SUPPLY APPARATUS FOR ELECTRIC SYSTEMS

The present disclosure relates to a power supply apparatus for an electric system including an AC/DC conversion unit electrically connectable to an AC electric power source, said conversion unit being configured to receive an AC input voltage and provide in output a DC charging voltage, a capacitor bank including a plurality of storage capacitors operatively coupled to said conversion unit to be charged in parallel by said conversion unit, each storage capacitor having a first terminal configured to receive a charging current provided by said AC/DC conversion unit, a DC bus electrically connectable to one or more electric loads, said DC bus being configured to feed said electric loads with a DC feeding voltage, and a plurality of current blocking devices electrically connected between said capacitor bank and said DC bus.