Patent ID: 11926227
Assignee: DENSO CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  G  H  Y | IPC B  G  H

Claim 0:
1. A moving-object power supply system comprising:
at least one power transmission section that includes a plurality of segments connected in parallel to one another in a traveling direction of a moving object, each of the plurality of segments including an inverter, a filter, a resonance circuit, and a power transmission coil;
a power supply circuit for power supply to each of the plurality of segments; and
a control unit configured to:
select, as a power transmission segment, one of the plurality of segments included in the at least one power transmission section;
supply, through the power supply circuit, power to the power transmission segment to thereby generate a magnetic field through the power transmission coil of the power transmission segment;
ascertain a first electrical characteristic of the power transmission segment, the first electrical characteristic of the power transmission segment including a first current generated to flow through the power transmission coil of the power transmission segment and a first voltage generated across the power transmission coil of the power transmission segment;
ascertain a second electrical characteristic of at least one power non-transmission segment, the at least one power non-transmission segment being selected from the plurality of segments except for the power transmission segment, the second electrical characteristic of the at least one power non-transmission segment including a second current and a second voltage induced based on magnetic coupling of the power transmission coil of the at least one power non-transmission segment to the generated magnetic field;
previously obtain a simulated change of each of the first current and the first voltage as the first electrical characteristic due to an occurrence of one of a first ground fault, a first short-circuit fault, and a first open fault in the power transmission segment;
previously obtain a simulated change of each of the second current and the second voltage as the second electrical characteristic due to an occurrence of one of a second ground fault, a second short-circuit fault, and a second open fault in the power non-transmission segment;
perform a first comparison between: (i) the obtained simulated change of each of the first current and the first voltage; and (ii) an actual value of a corresponding one of the first current and the first voltage;
perform a second comparison between: (i) the obtained simulated change of each of the second current and the second voltage; and (ii) an actual value of a corresponding one of the second current and the second voltage; and
determine, based on a result of each of the first comparison and the second comparison, whether there is a malfunction in each of the power transmission segment and the at least one power non-transmission segment.