Abstract:
A battery charging device for a motor vehicle battery with at least partially electric traction includes a filtering stage to be connected to an electrical power supply network, a voltage buck stage connected to the filtering stage, a voltage boost stage coupled to the voltage buck stage and to be connected to the battery, and a regulation unit to impose chopping duty cycles on the voltage buck stage and on the voltage boost stage. The regulation unit compensates the harmonics generated by the voltage buck stage in the filtering stage, acting on the voltage buck stage.
Abstract:
A device synchronizes primary speed of a primary shaft receiving an electrical torque from an electric machine with a secondary speed lower than the primary speed of a secondary transmission shaft. The primary shaft and secondary shaft are decoupled. The primary shaft has a kinetic energy associated with the primary speed. The device provides electrical braking torque to the primary shaft until the primary speed is substantially equal to the secondary speed. The device also at least partially recovers, in the form of electrical energy, the kinetic energy lost by the primary shaft and transmits the electrical energy to an energy storage device.
Abstract:
A device determines a corrected setting of a neutral current at an output of a rectifier stage of an electrical or hybrid automotive vehicle battery charger without galvanic isolation. The device includes a phase-locked loop to determine an instantaneous frequency of the network as a function of a measurement of a voltage of an electrical supply network, a regulating mapping to determine a neutral current setting as a function of a setting of battery current, a device to calculate an amplitude of a frequency variation of the network as a function of the instantaneous frequency, a correction mapping that receives as input a value of the amplitude of the frequency variation and emits as output a correction value of the neutral current setting, and a summer to determine a corrected neutral current setting by adding the correction value of the neutral current setting to the neutral current setting.
Abstract:
A device and method for charging a battery from a three-phase network, having a degraded charging mode, for example a battery of an electric traction automotive vehicle. The device includes a first filtering stage configured to be connected to the three-phase network, a voltage step-down stage connected to the filtering stage, a voltage step-up stage configured to be connected to the battery and coupled to the voltage step-down stage via an inductive component, a regulating unit configured to impose cyclic switching ratios on the voltage step-down stage and on the voltage step-up stage, and a device for comparing operating temperature of the regulating unit with a threshold value and controlling the charging based on two phases of the three-phase network when the operating temperature of the regulating unit exceeds the threshold value.