TRANSMISSION OF POWER BIDIRECTIONALLY AND WITHOUT CONTACT TO CHARGE ELECTRIC VEHICLES
1 Assignment
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Accused Products
Abstract
A converter that feeds an electric drive in an electric vehicle is used to transmit energy to the vehicle without contact using resonant operation for inductive transmission of energy. The leakage inductance of the transformer is resonantly adjusted by a serial capacitor. The load current is then switched at zero-crossing.
38 Citations
16 Claims
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1-8. -8. (canceled)
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9. A system in an electrically operated vehicle having at least one electric drive and at least one energy storage device, comprising:
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an AC/DC converter, switchably connected to the at least one energy storage device at an input end, converting a first direct current voltage at the input end into a first alternating current voltage at an output end and converting a second alternating current voltage at the output end into a second direct current voltage at the input end; a coil arrangement providing inductive transmission of electrical energy; and a capacitance, connected in series between the coil arrangement and the AC/DC converter, providing resonance tuning of alternating current frequency. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for charging an energy storage device of an electrically operated vehicle having at least one electric drive supplied with electric energy from the energy storage device, comprising:
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transmitting electrical energy to the electrically operated vehicle through inductive transmission in a contact-free manner using an AC/DC converter in the electrically operated vehicle, the AC/DC converter also supplying the electric drive with electricity when the electrically operated vehicle is driven; and switching semiconductor switches of the AC/DC converter at zero crossing of a load current by a resonant circuit including a capacitance in the electrically operated vehicle. - View Dependent Claims (16)
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Specification