Abstract: A power control system includes a battery system and a DC-DC converter with first, second, third, and fourth power switches. A second terminal of the first power switch is connected to a first terminal of the second power switch. A second terminal of the third power switch is connected to a first terminal of the fourth power switch. A first inductor includes a first terminal connected to the second terminal of the first power switch and the first terminal of the second power switch and a second terminal connected to the second terminal of the third power switch and the first terminal of the fourth power switch. A first bypass switch is connected in parallel to the first power switch. A second bypass switch is connected in parallel to the third power switch.

Abstract: A device for thermal control of a battery system includes a heating control module electrically connected to the battery system and a conversion device configured to control power output from the battery system. The heating control module is configured to measure a current through the conversion device, the measured current provided by the battery system of a vehicle during vehicle operation or provided by an energy source during vehicle charging. The heating control module is also configured to control the conversion device to generate an alternating current (AC) heating current using the measured current, and apply the AC heating current to the battery system to heat the battery system to a desired temperature.

Abstract: A method and apparatus for electric motor control includes a model predictive controller operating in a d-q reference frame to provide d-q reference frame voltage command signals that counteract a magnetic cross coupling within the motor.

Abstract: Examples described herein provide a method that includes determining whether a vehicle is operating in a first high voltage mode or a second high voltage mode. The method further includes, responsive to determining that the vehicle is operating in the first high voltage mode, providing electric power to an electric motor at a first high voltage and providing electric power to an auxiliary device at a second high voltage that is different than the first high voltage. The method further includes, responsive to determining that the vehicle is operating in the second high voltage mode, providing electric power to the electric motor at the second high voltage and providing electric power to the auxiliary device at the second high voltage.

Abstract: A method and apparatus for electric motor control includes a model predictive controller operating in a d-q reference frame to provide d-q reference frame voltage command signals that counteract a magnetic cross coupling within the motor.

Abstract: A power control system for an electric vehicle comprises N power inverters configured to connect to a battery system of the electric vehicle. Each of the N power inverters includes a plurality of power switches, where N is an integer greater than one. The N power inverters are configured to connect to stator phase windings of N electric machines, respectively. A controller is configured to determine a switching frequency for the N electric machines and (N?1) phase offsets for (N?1) ones of the N electric machines, generate a set of pulse width modulation (PWM) switching signals at the switching frequency for a first one of the N power inverters, and output (N?1) sets of PWM switching signals to the (N?1) ones of the N electric machines based on the set of PWM switching signals and the (N?1) phase offsets.

Abstract: A system in a vehicle includes a first set of one or more windings and a second set of one or more windings electrically isolated from the first set of one or more windings. The system also includes a first inverter coupled to a battery of the vehicle and the first set of one or more windings and a second inverter electrically separated from the first inverter and coupled to the second set of one or more windings. A universal charger includes an alternative current (AC) charging port and a direct current (DC) charging port. A switch is controlled to close to connect the second inverter to the battery.

Abstract: A system for a power take-off mechanism for a powertrain system is provided. The system includes an electrically powered torque generating device including a torque generating device output shaft and a transmission output shaft receiving mechanical power from the torque generating device output shaft. The system further includes a clutch selectively disengaging the transmission output shaft from the torque generating device output shaft and a power take-off module receiving mechanical power from the torque generating device.

Abstract: A charging system for a vehicle includes a conversion device configured to transfer an electric charge between a battery assembly of the vehicle and an energy storage system, the battery assembly having a first voltage and the energy storage system having a second voltage, the conversion device including a scalable buck-boost system having a plurality of buck-boost modules. Each buck-boost module of the plurality of buck-boost modules includes a set of switches and an inductor. The charging system also includes a controller configured to operate one or more buck-boost modules of the plurality of buck-boost modules during transfer of charge between the battery assembly and the energy storage system.

Abstract: A system in a vehicle includes a first winding section including first two or more windings and a second winding section including second two or more windings. Each of the second two or more windings corresponds to one of the first two or more windings of the first winding section. The system also includes an inverter including a high side switch and a low side switch corresponding to each of the first two or more windings. The inverter is coupled to a battery of the vehicle and boosts a voltage of a direct current (DC) charger during charging of the battery with the DC charger, converts alternating current (AC) from an AC grid to DC during charging of the battery with the AC grid, and converts DC to AC during supply of the AC grid by the battery.

Abstract: A system in a vehicle includes a controller to implement a neural network to provide current commands based on inputs. The inputs include a torque input. The system also includes a current controller to provide a three-phase voltage through an inverter based on the current commands from the controller. An electric traction motor provides drive power to a transmission of the vehicle based on injection of the three-phase voltage. The current commands resulting from implementation of the neural network are corrected based on estimated torque resulting from the injection of the three-phase voltage to the electric traction motor.

Abstract: A method includes: selectively actuating switches of an inverter module and first, second, third, and fourth switches of a motor; and charging a battery with power from a charger using at least one of first, second, and third stator windings of the motor, the battery having a first voltage and being electrically connected in parallel with the inverter module, and the charger having a second voltage that is less than the first voltage.

Abstract: A method for controlling an electric drive unit (EDU) having a motor-driven torque converter includes receiving a request signal indicative of a requested output torque of the EDU, and operating the motor at a target motor speed using the requested output torque. The target motor speed minimizes system losses while achieving the requested output torque. When the requested output torque remains below a calibrated threshold and a turbine speed is less than a corner speed of the motor, a torque converter clutch (TCC) transitions to or remains in a locked state. The controller commands the TCC to transition to an unlocked state to reach the target motor speed, thereby selectively enabling torque multiplication. A powertrain system includes a driven load and the EDU. A computer readable storage medium may include executable instructions for performing the method.

Abstract: A power control system comprises a battery system including N battery packs. A plurality of contactors selectively connects N battery packs of a battery system in a first configuration supplying a first voltage level, a second configuration supplying a second voltage level, and a disconnected configuration. M power inverters connect the battery system to M electric machines, respectively. A controller is configured to determine when to transition between the first configuration and the second configuration. The controller is configured to transition between the first configuration and the second configuration by causing one of a positive torque transient and a negative torque transient to be generated by at least one of the M electric machines, transitioning the battery system from one of the first configuration and the second configuration to the disconnected configuration, and transitioning from the disconnected configuration to the other one of the first configuration and the second configuration.

Abstract: An electric machine includes: a first stator winding including first and second stator winding portions; a second stator winding including third and fourth stator winding portions; a third stator winding including fifth and sixth stator winding portions, where inputs of the stator windings are configured to be connected to phases, respectively, of an inverter; and switches connected between the stator winding portions and outputs of a power source.

Abstract: A motor drive system of a vehicle includes: an inverter that receives power from a power source via a bus, where the inverter is connected to a motor of the vehicle; a driver that drives the inverter; a filter that filters a current signal received from the bus to generate a filtered signal; and a control module that operates in an impedance determination mode. The impedance determination mode includes: based on the filtered signal, controlling the driver and the inverter to generate a pulsed signal applied to the power source; determining a current level and a voltage of the power source due to generation of the pulsed signal, and determining impedance based on the current level and the voltage. The control modules are configured to: determine a characterization parameter of the power source based on the impedance; and perform a control operation or a countermeasure based on the characterization parameter.

Abstract: A motor drive system of a vehicle includes: an inverter that receives power from a power source via a bus, where the inverter is connected to a motor of the vehicle; a driver that drives the inverter; a filter that filters a current signal received from the bus to generate a filtered signal; and a control module that operates in an impedance determination mode. The impedance determination mode includes: based on the filtered signal, controlling the driver and the inverter to generate a pulsed signal applied to the power source; determining a current level and a voltage of the power source due to generation of the pulsed signal, and determining impedance based on the current level and the voltage. The control modules are configured to: determine a characterization parameter of the power source based on the impedance; and perform a control operation or a countermeasure based on the characterization parameter.

Abstract: A charging system includes: a charge port that receives shore power; a DC-to-DC converter or a motor inverter circuit; switches that connect the charge port and the DC-to-DC converter or the motor inverter circuit to battery packs; and a control module. The control module: determines open circuit voltages or states of charges of the battery packs; based on the open circuit voltages or the states of charges of the battery packs, determines whether to connect at least one of the battery packs to the charge port, the DC-to-DC converter, and the motor inverter circuit; and based on the determination of whether to connect at least one of the battery packs, control states of the switches to charge the at least one of the battery packs by selectively connecting the at least one of the battery packs to (a) the charge port, or (b) the DC-to-DC converter or motor inverter circuit.

Abstract: An electrified drivetrain system that maximizes power density, is readily packaged, and improves drivability is described. It includes a propulsion system having an axial-flux rotating electric machine, a torque converter having a selectable one-way clutch, and an output member that is couplable to a drivetrain. The axial-flux rotating electric machine include a first rotor coaxially arranged with a first electric stator. The torque converter includes a fluidic stator, a pump, a turbine and a torque converter clutch. The axial-flux rotating electric machine is arranged coaxially with the torque converter. The first rotor of the axial-flux rotating electric machine is coupled to the pump of the torque converter, and the turbine of the torque converter is rotatably coupled to the output member.

Abstract: Systems and methods for diagnosing health of a battery using in-vehicle impedance analysis. The method includes receiving a sensed current measurement for a cell of the battery; generating a current profile as a function of the sensed current measurement, including pulses to a peak current, the pulses having a pulse frequency (w); applying a current with the current profile to the cell; for each pulse in the current profile, receiving a voltage measurement for the cell that is responsive to the pulse, calculating an impedance for the cell responsive thereto, the impedance comprising a real component at the pulse frequency (RZw), and an imaginary component at the pulse frequency (IZw), identifying a battery health problem when either RZw exceeds a preprogrammed first threshold for the pulse frequency, or when IZw exceeds a preprogrammed second threshold for the pulse frequency, and storing the RZw and the IZw for the cell.