TRAVELING VEHICLE SYSTEM
1 Assignment
0 Petitions
Accused Products
Abstract
A contactless power feed type traveling vehicle system prevents and minimizes leakage of the magnetic field from a power feed cable and includes an AC power source, a power feed cable, a power reception pickup, and a magnetic field reducing section. The power feed cable is connected to the AC power source. The power reception pickup is provided on a traveling vehicle and arranged to receive electric power through the power feed cable in a contactless fashion. The magnetic field reducing section includes a coil antenna and a capacitor. An induced electric current flows in the coil antenna due to a magnetic field generated by an electric current flowing in the power feed cable. A resonance relationship is established between the coil antenna and the capacitor such that the induced electric current in the coil antenna is out of phase or in opposite phase with the electric current flowing in the power feed cable.
15 Citations
8 Claims
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1-4. -4. (canceled)
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5. :
- A contactless power feed system, comprising;
an AC power source; a power feed cable connected to the AC power source; a power reception pickup that is provided on a traveling vehicle and arranged to receive electric power through the power feed cable in a contactless fashion; and a magnetic field reducing circuit including a coil antenna and a capacitor connected to the coil antenna, the coil antenna being arranged to carry an electric current induced therein by a magnetic field generated due to an electric current flowing in the power feed cable, a resonance relationship is established between the coil antenna and the capacitor such that the induced electric current in the coil antenna is out of phase with the electric current flowing in the power feed cable. - View Dependent Claims (6)
- A contactless power feed system, comprising;
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7. :
- A magnetic field reducing method for a contactless power feed system including an AC power source, a power feed cable connected to the AC power source, and a power reception pickup that is provided on a traveling vehicle and arranged to receive electric power through the power feed cable in a contactless fashion, the method includes the steps of;
preparing a coil antenna; and preparing a capacitor by adjusting a resonance relationship with respect to the coil antenna such that a magnetic field generated by an induced electric current in the coil antenna cancels out a magnetic field generated by an electric current flowing in the power feed cable. - View Dependent Claims (8)
- A magnetic field reducing method for a contactless power feed system including an AC power source, a power feed cable connected to the AC power source, and a power reception pickup that is provided on a traveling vehicle and arranged to receive electric power through the power feed cable in a contactless fashion, the method includes the steps of;
Specification