Patent application number | Description | Published |
20110060489 | METHOD AND SYSTEM FOR CONTROLLING A POWER UNIT WITH POWER BYPASS - A method for controlling a hybrid power unit with power bypass for an automobile including at least two driving wheels, wherein the power unit includes a thermal engine, at least two electric machines, and an infinitely variable transmission mechanically connecting the thermal engine, the two electric machines, and the driving wheels. In the method, an initially stopped thermal engine is brought, in an independent manner and in plural operation phases, to a rotation speed that is sufficient for participating in propulsion of the vehicle, the vehicle moving under action of the electric machines. | 03-10-2011 |
20110115457 | METHOD OF CONTROLLING OF A SWITCHED-MODE POWER SUPPLY AND CORRESPONDING POWER SUPPLY - A method of controlling a switched-mode power supply and corresponding power supply including a switching cell including two series-connected configurable on/off switches; in which the switching cell is configured cyclically: for a duration T1, in an on state, in which a first on/off switch is closed and the second on/off switch is open; and, for a duration T2, in an off state, in which the second on/off switch is closed and the first on/off switch is open. The switching cell is also configured in a transition state, in which the first on/off switch and the second on/off switch are open: for a duration Tm1 between the off state and the on state; and for a duration Tm2 between the on state and the off state; and the durations T1 and/or T2 of the on and off states are determined according to the durations Tm1 and/or Tm2, respectively, of the transition states. | 05-19-2011 |
20110125355 | SYSTEM AND METHOD FOR CONTROLLING THE CHANGE IN MODE OF AN INFINITELY VARIABLE TRANSMISSION IN PURELY ELECTRIC MODE - A system for controlling change in mode of an infinitely variable transmission including a first operation mode at high torque at high speed and a second operation mode at high torque at low speed, fitted to a motor vehicle that includes at least two electric machines, with at least one internal combustion engine. The infinitely variable transmission connected mechanically to the electric machines and to the internal combustion engine determines the internal combustion engine rotation speed setpoint; calculates the difference between the internal combustion engine rotation speed setpoint and the internal combustion engine rotation speed measurement; determines torque of the first electric machine to determine a torque setpoint for the first electric machine as a function of the difference between the rotation speed setpoint of the internal combustion engine and the measured rotation speed of the internal combustion engine; determines a torque setpoint for the second electric machine as a function of the torque setpoint of the first electric machine and the driver's demand for torque. The control system can control the second electric machine so that the change in mode can be performed while the vehicle is being propelled, before and after the change in mode, under sole action of at least one electric machine. | 05-26-2011 |
20130214729 | DEVICE FOR RECHARGING AN AUTOMOBILE BATTERY AND METHOD FOR MANAGING THE DEVICE - A rapid charging device for a battery includes a filtering stage of resistive-inductive-capacitive type to be connected to a three-phase network, a buck stage, a boost stage to be connected to the battery, an induction winding interposed between the buck stage and the boost stage, and a regulating unit capable of imposing chopping duty cycles on the buck stage and on the boost stage. The regulating unit compensates the phase shift induced by the filtering stage between the currents and the voltages taken from each phase of the three-phase network and also maintains the value of the current amplitude passing through the winding above a non-zero predefined threshold. | 08-22-2013 |
20140132196 | METHOD AND DEVICE FOR CONTROLLING AN ELECTRIC MOTOR PROPULSION UNIT WITH DECOUPLED CONTROLS - A method of controlling an electric motor including a rotor and a stator, sensors for measuring currents flowing in the rotor and in the stator, a mechanism determining setpoints of current, and a mechanism processing the signals from the measurement sensors, the method including: determining intermediate signals by a transformation according to which stator voltages and rotor voltages of the electric motor are expressed in a decoupled reference system as a function of the signals received from the processing means, and determining signals for regulating voltage as a function of the currents flowing in the rotor and in the stator of the electric motor satisfying the setpoints of current as a function of the intermediate signals obtained by transformation. | 05-15-2014 |
20140165780 | HYBRID TRANSMISSION FOR A MOTOR VEHICLE, AND CONTROL METHOD - A hybrid transmission for a motor vehicle including a heat engine and a driving electrical machine, including two concentric primary shafts, each of which includes at least one intermediate drive on a secondary shaft connected to wheels of the vehicle. The transmission includes a first mechanism for coupling the two primary shafts together, and capable of assuming at least three positions, of positions in which: the heat engine is separated from the drive train connecting the electrical machine to the wheels; the heat engine drives the wheels with or without the assistance of the electrical machine; and the heat engine and the electrical machine are coupled together to add respective torques thereof to the wheels. | 06-19-2014 |
20140197788 | DEVICE FOR CHARGING A BATTERY OF A MOTOR VEHICLE ON THE BASIS OF A SINGLE-PHASE POWER SUPPLY NETWORK, AND METHOD OF CONTROLLING THE DEVICE - A device for charging a battery, for example of an electric traction motor vehicle, based on a single-phase power supply network, the device including a filtering stage configured to be connected to the single-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 or an induction coil, and a regulating unit configured to impose chopping duty ratios on the voltage step-down stage and on the voltage step-up stage. The regulating unit compensates for phase shift between an input current of the voltage step-down stage and an input voltage of the voltage step-down stage. | 07-17-2014 |
20140377605 | METHOD FOR ESTIMATING THE TEMPERATURE AT THE CORE OF A BATTERY CELL - A method of estimating temperature at a core of a module of a traction battery of an electric or hybrid vehicle in which is packaged a plurality of electric charge accumulating elements, the method including: measuring a temperature at a level of an exterior wall of the battery module; and calculating an estimation of the temperature at the core of the battery module on the basis of the measurement of the temperature. | 12-25-2014 |
20150028818 | SECURE ON-BOARD SYSTEM FOR CHARGING THE BATTERY OF A MOTOR VEHICLE FROM A POWER SUPPLY NETWORK - A secure system for charging a battery of a motor vehicle from a power supply network, which system is in a vehicle and includes a mechanism measuring frequency of the network, an injection mechanism injecting current pulses into the network, a mechanism measuring voltage between the ground and a neutral of the network, an analog filter filtering the measured voltages at high frequencies, a digital filter filtering the analog-filtered voltages at low frequencies, and a mechanism determining resistance between the ground and the neutral of the network on the basis of the digitally filtered voltages and an amplitude of the current pulses. The digital filter includes a mean value filter which determines a mean value based on N voltage measurements spaced apart by a time interval T+T/N, where T is the period of the network determined by the mechanism measuring the frequency of the network. | 01-29-2015 |