US 12,065,124 B2
Method of controlling a hybrid powertrain of a motor vehicle
Guillaume Colin, Olivet (FR); Souad Hadj-Said, Olivet (FR); and Ahmed Ketfi-Cherif, Elancourt (FR)
Assigned to RENAULT S.A.S., Boulogne Billancourt (FR); and UNIVERSITE D'ORLEANS, Orleans (FR)
Appl. No. 17/260,777
Filed by RENAULT S.A.S., Boulogne Billancourt (FR); and UNIVERSITE D'ORLEANS, Orleans (FR)
PCT Filed Jul. 9, 2019, PCT No. PCT/FR2019/051694
§ 371(c)(1), (2) Date Jan. 15, 2021,
PCT Pub. No. WO2020/016502, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 1856551 (FR), filed on Jul. 16, 2018.
Prior Publication US 2021/0291804 A1, Sep. 23, 2021
Int. Cl. B60W 20/13 (2016.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 10/26 (2006.01); B60W 10/30 (2006.01); B60W 50/00 (2006.01)
CPC B60W 20/13 (2016.01) [B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/26 (2013.01); B60W 10/30 (2013.01); B60W 50/00 (2013.01); B60W 2050/0013 (2013.01); B60W 2050/0019 (2013.01); B60W 2510/083 (2013.01); B60W 2710/242 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling drive chains for a hybrid electric vehicle comprising an internal combustion engine and a motor, said drive chains including a thermal drive chain and an electric drive chain, said electric drive chain comprising a traction battery, a voltage modulation device, an inverter, a first electrical machine and a second electrical machine, the voltage modulation device being adapted to modulate a supply voltage of an electric current which is output by the traction battery and which is supplied to the first electrical machine and to the second electrical machine of the hybrid electric vehicle,
the method comprising:
a step of analytically calculating an optimal supply voltage by means of a mathematical expression which corresponds to the resolution of an equation expressed in the form

OG Complex Work Unit Math
wherein Ue is the supply voltage, wherein Pbat is the electrical power supplied by the traction battery and wherein said electrical power supplied by the traction battery is expressed in the form of a quadratic function of said supply voltage, and
a step of controlling the voltage modulation device so that the voltage modulation device supplies said optimal supply voltage.