| 主权项 |
1. A hot standby power supply for a variable frequency drive of a floating vessel, the variable frequency drive powering an electric motor of the floating vessel, the hot standby power supply comprising:
a power input operable for receiving electric power from a main power supply of the floating vessel; a first electric connection configured to supply electric power at a first voltage level to a converter power input of the variable frequency drive; a second electric connection configured to supply electric power at a second voltage level to a control power input of the variable frequency drive, wherein the first voltage level is higher than the second voltage level; a transformer operable for transforming received electric power to the first voltage level or to the second voltage level; an electric power storage unit operable for storing and supplying electric power, the electric power storage unit being electrically connected so as to be operable to supply electric power to both the first electric connection and the second electric connection, the first electric connection or the second electric connection being supplied via the transformer for providing the first voltage level or the second voltage level, respectively; and a control unit configured to control the hot standby power supply such that in operation, electric power received at the power input is provided to the converter power input and to the control power input of the variable frequency drive via the first electric connection and the second electric connection, and that upon an interruption in the supply with electric power from the main power supply, electric power is supplied from the electric power storage unit to the converter power input and to the control power input of the variable frequency drive via the first electric connection and the second electric connection. |
