US 11,926,227 B2
Moving-object power supply system
Kouji Mazaki, Kariya (JP); Nobuhisa Yamaguchi, Kariya (JP); Eisuke Takahashi, Kariya (JP); Mitsuru Shibanuma, Kariya (JP); Shinpei Takita, Kariya (JP); Masaya Takahashi, Kariya (JP); Hayato Sumiya, Kariya (JP); Masaki Kanesaki, Kariya (JP); Takuya Kiguchi, Kariya (JP); Kazuhiro Uda, Kariya (JP); and Yuusei Nakayashiki, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Nov. 17, 2021, as Appl. No. 17/528,718.
Application 17/528,718 is a continuation of application No. PCT/JP2020/016317, filed on Apr. 13, 2020.
Claims priority of application No. 2019-093555 (JP), filed on May 17, 2019.
Prior Publication US 2022/0072965 A1, Mar. 10, 2022
Int. Cl. B60L 53/12 (2019.01); B60L 53/60 (2019.01); G01R 31/52 (2020.01); H02J 50/12 (2016.01); H02J 50/40 (2016.01); H02J 50/90 (2016.01)
CPC B60L 53/12 (2019.02) [B60L 53/60 (2019.02); G01R 31/52 (2020.01); H02J 50/12 (2016.02); H02J 50/40 (2016.02); H02J 50/90 (2016.02)] 8 Claims
OG exemplary drawing
 
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.