US 12,280,763 B1
Method and device for controlling starting of power generation system
Yoshihiro Terai, Kanagawa (JP); Tsukasa Ichiba, Kanagawa (JP); Kensaku Endo, Kanagawa (JP); and Yoshihiro Kondo, Kanagawa (JP)
Assigned to Nissan Motor Co., Ltd., Yokohama (JP)
Appl. No. 18/850,150
Filed by Nissan Motor Co., Ltd., Yokohama (JP)
PCT Filed Apr. 1, 2022, PCT No. PCT/JP2022/017012
§ 371(c)(1), (2) Date Sep. 24, 2024,
PCT Pub. No. WO2023/188438, PCT Pub. Date Oct. 5, 2023.
Int. Cl. B60W 10/08 (2006.01); B60W 20/00 (2016.01)
CPC B60W 10/08 (2013.01) [B60W 20/00 (2013.01); B60W 2710/083 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for controlling starting of a power generation system including an internal combustion engine as a power source, an electrical generator, and a power transmission mechanism that transmits power between the internal combustion engine and the electrical generator, the method executing a rotation speed control of driving the electrical generator by using electric power supplied from a battery, and matching a rotation speed of the electrical generator with a target rotation speed at a time of starting the power generation system, the method comprising:
acquiring output possible electric power of the battery;
acquiring the rotation speed;
calculating, based on the rotation speed and the output possible electric power, a first upper limit torque that is an upper limit value of a torque of the electrical generator;
executing, on the rotation speed, a filtering process of reducing a component of a resonance frequency band of a spring-mass system including the internal combustion engine, the electrical generator, and the power transmission mechanism;
calculating, based on a filtered rotation speed and the output possible electric power, a second upper limit torque that is an upper limit value of the torque of the electrical generator;
executing the rotation speed control under a limitation of the first upper limit torque when a temperature of the internal combustion engine is higher than a predetermined temperature determined in advance or when the output possible electric power is equal to or larger than electric power required for driving the electrical generator; and
executing the rotation speed control under a limitation of the second upper limit torque when the temperature of the internal combustion engine is equal to or lower than the predetermined temperature and the output possible electric power is smaller than the electric power required for driving the electrical generator.