| 主权项 |
1. An electric propulsion system for an electric vehicle to supply electric energy to drive a load comprising an electric drive motor of the electric vehicle, the system comprising:
a power supply system including first and second power supply units, each power supply unit having an input and an output and a set of energy storage devices, initially charged prior to operation, connected between the input and output to produce electric energy at the output, a discharge of the set of energy storage devices determining a driving range of the vehicle; first and second wind generators each having a generator output and having a charging mode to produce electric energy at the generator output and a rest mode in which the wind generator rotates freely producing no electric energy at the generator output, the generator output of the first wind generator being coupled to the input of the first power supply unit and the generator output of the second wind generator being coupled to the input of the second power supply input; a combiner for being coupled to the drive motor and receiving electric energy from one of the first and second power supply units and ensuring a continuous flow of electric supply to the drive motor without intermittence; and an intermediate section configured during a first cycle to connect the energy storage devices of one of the first and second power supply units set in electrical series, with the first wind generator in the rest mode, and to couple the electric output of said one power supply unit to the combiner for supplying the electric drive motor with electric energy, and simultaneously configured during the first cycle to connect the energy storage devices of the other of the first and second power supply units that are set in electrical parallel with the second wind generator set in the charging mode for recharging the energy storage devices of the other of said power supply units, wherein during a second cycle the energy storage devices of other of the first and second power supply units are set in electrical series, with the second wind generator in the rest mode, and the electric output of said other power supply unit is coupled to the combiner for supplying the electric drive motor with electric energy, and simultaneously during the second cycle the energy storage devices of the one of the first and second power supply units are set in electrical parallel, with the first wind generator set in the charging mode for recharging the energy storage devices of the one of said power supply units, with complete electrical isolation being maintained between the recharging of the energy storage devices and the load in each cycle. |
