METHOD OF CONTROLLING A HYBRID POWERTRAIN OF A MOTOR VEHICLE

    公开(公告)号:US20210291804A1

    公开(公告)日:2021-09-23

    申请号:US17260777

    申请日:2019-07-09

    Abstract: Disclosed is a method for controlling a hybrid vehicle power train, including a thermal drive chain and an electric drive chain, the electric drive chain including a traction battery, a voltage modulator, an inverter, first and second electrical machines. The voltage modulator is designed to modulate a supply voltage of an electric current from the traction battery to the first and second electrical machines. The method includes: a step of analytically calculating an optimal supply voltage using a mathematical expression that corresponds to the resolution of an equation expressed as ∂ P b ⁢ a ⁢ t ∂ U e = 0 , where Ue is the supply voltage, Pbat is the electrical power supplied by the traction battery, and where the electrical power supplied by the traction battery is expressed as a quadratic function of the supply voltage; and a step of controlling the voltage modulator in such a way that it outputs the optimal supply voltage.

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