US 12,456,933 B2
Control apparatus, control method, and non-transitory computer readable recording medium
Ryosuke Ikemura, Susono (JP); Shogo Tsuge, Fuji (JP); and Toshiya Hashimoto, Miyoshi (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed on Apr. 12, 2023, as Appl. No. 18/299,052.
Claims priority of application No. 2022-066445 (JP), filed on Apr. 13, 2022.
Prior Publication US 2023/0336095 A1, Oct. 19, 2023
Int. Cl. H02M 7/5395 (2006.01)
CPC H02M 7/5395 (2013.01) 4 Claims
OG exemplary drawing
 
1. A control method for controlling a power receiver which wirelessly receives electric power from a power transmitter, comprising restricting received power by pulse width modulation (PWM) control depending on an amount of the received power,
wherein the restricting the received power by the PWM control comprises:
calculating an increase gap which is a difference between an initial received power, which is the received power when the restriction process is not executed, and a local maximum value of the received power with respect to a change in a duty in the PWM control;
starting the PWM control when a first value which is a value obtained by adding the increase gap to a current received power exceeds a second value which is a value obtained by subtracting a predetermined margin from an upper limit of the received power; and
increasing the duty until the received power becomes lower than the initial received power when starting the PWM control.