| 摘要 |
An electrical power supply system for a traction system of a vehicle comprises an energy storage module such as battery 2, an inverter 3, an electric machine such as motor 4, and an electromagnetic induction receiver 5 that receives an alternating electromagnetic field and produces an alternating electric current. A passive circuit 8 connects the inverter 3, the electric machine 4, and the receiving device 5, and blocks transfer of energy from the receiver to the motor while static charging takes place. An impedance of the transmission circuit connecting the receiver to the motor can be high, blocking power at a given charging frequency while the impedance of the transmission circuit connecting the receiver to the inverter is low. At a lower, operating frequency the impedance of the transmission circuit connecting the inverter with the motor can be low. The passive circuit can comprise inductive elements L1,L2,L3 of the receiver, inductances of the motor LM1,LM2,LM3 and inductors L4,L5,L6, and capacitive elements C1,C2,C3 whose values are chosen to form a resonant filter circuit. |
