Ac inductive power transfer system
AssigneeEvatran Group, Inc.
InventorRobert Joseph Callanan
Life of this patent
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Abstract
An inductive power transfer system for device such as a battery charger on an electric vehicle includes a primary circuit having a rectifier and an H bridge inverter connected in parallel to deliver rectified AC voltage to a stationary primary coil of a transformer. The system further includes a secondary circuit on the vehicle including a secondary coil and another rectifier connected in series. AC voltage from a power supply is converted to rectified AC voltage and then transformed into a pulse width modulated high frequency square wave voltage for electromagnetic transfer from the primary coil to the secondary coil. The square wave voltage is converted back to AC voltage for delivery to a vehicle charger.
Claims18
An inductive power transfer system, comprising
- (a) a transformer including a stationary primary coil and a receiving secondary coil mounted on a device to receive power;
- (b) a primary circuit connected between an AC voltage source and said stationary primary coil, said primary circuit including a rectifier and a bridge inverter connected in parallel with said inductor primary coil to produce a rectified AC voltage;
- and
- (c) a secondary circuit including a rectifier and a bridge inverter connected in parallel with said receiving secondary coil to produce an AC output.
An inductive power transfer system as defined in claim 7, and further comprising a capacitor connected in parallel with said stationary primary coil and a capacitor connected in series with said receiving secondary coil.
Dependencies are inferred from the claim text.