Abstract: An electric machine drive arrangement for a heavy-duty vehicle. The electric machine drive arrangement comprises an electric machine. The electric machine drive arrangement further comprises a brake arrangement connected to the electric machine. The electric machine drive arrangement further comprises a braking resistor controller configured to control the brake arrangement. The braking resistor controller has a primary power feed connection and a back-up power feed connection. The back-up power feed connection is connected to an alternating current side of the electric machine for the electric machine to supply back-up power to the braking resistor controller.

Abstract: A computer system for a heavy-duty vehicle has a fuel-cell system and an electrical energy storage system. The computer system comprises processing circuitry configured to identify a downhill portion of a trip to be undertaken by the heavy-duty vehicle, determine at least two candidate routes leading from a starting location along the trip to an onset of the downhill portion of the trip, predict a state of energy, SoE, of the battery system at the onset of the downhill portion for each candidate route, and select a proposed route out of the candidate routes at least in part based on the predicted SoE for each candidate route and on an estimated amount of energy regenerated by traversing the downhill portion of the trip.

Abstract: A method for controls a fuel cell system comprising one or more fuel cells and a cooling system. The method predicts a future power request for power delivery from the fuel cell system during a future prediction horizon, detects that the predicted future power request fulfils a predetermined coolant temperature reduction condition, wherein the predicted power request must be lower than a predetermined first lower power limit at one or more instant time intervals during the future prediction horizon for the coolant temperature reduction condition to be considered fulfilled, determines at least one future time interval within the future prediction horizon during which the coolant temperature is to be adjusted to a predeterminable reduced coolant temperature, controls the coolant temperature to the reduced coolant temperature during the determined at least one future time interval.

Abstract: A method for operating a fuel cell system below a predetermined maximum polarisation cell voltage limit wherein, for each set of one or more operational conditions of the fuel cell, said limit corresponds to a minimum power limit, and wherein said set includes at least the temperature of the fuel cell, said method including: receiving a power request for execution at an execution time, in response to detecting that the power request is lower than an estimated minimum power limit corresponding to an estimated set of operational conditions at said execution time, including an estimated temperature, performing an adjustment of least one out of said operational conditions to achieve an adjusted set of operational conditions at which the minimum power limit is lower than said estimated minimum power limit; wherein said adjustment includes cooling said fuel cell to a reduced temperature being lower than said estimated temperature.

Abstract: A control unit for controlling at least one torque generating MSD on a heavy-duty vehicle. The control unit receives a motion request indicative of a desired positive longitudinal tire force to be generated by the torque generating MSD, obtains an estimated applied torque indicative of a current torque generated by the torque generating MSD, determines a target wheel speed based on the motion request and on the estimated applied torque, and configures the torque generating MSD to maintain the target wheel speed. The control unit is arranged to decrease the target wheel speed in case an increase in configured wheel speed results in a decrease in the estimated applied torque.

Abstract: A method performed in a vehicle control unit for controlling an electric machine (EM) of a heavy-duty vehicle, wherein the heavy-duty vehicle comprises an energy storage system (ESS) connected to the EM, the method comprising obtaining an energy absorption capability of the ESS, determining an amount of regenerated energy by the EM during braking, and configuring an efficiency level of the EM in dependence of the energy absorption capability of the ESS relative to the amount of regenerated energy by the EM during braking.

Abstract: An electric machine drive arrangement for a heavy-duty vehicle. The electric machine drive arrangement comprises a motor drive system inverter with an alternating current side for interfacing with an electric machine. The electric machine drive arrangement comprises a brake arrangement comprising a braking resistor circuit connectable to a control circuit. The electric machine drive arrangement comprises a rectifier arrangement connected in parallel between the brake arrangement and the motor drive system inverter on the alternating current side of the motor drive system inverter.

Abstract: The disclosed subject matter relates to a method for determining a starting sequence for a fuel cell arrangement including a plurality of fuel cell systems. The starting sequence includes the following information for each fuel cell system in the fuel cell arrangement: whether or not the fuel cell system should be started and, if the fuel cell system should be started, the starting time for the fuel cell system, said starting sequence being determined using the following as input: a power and/or energy need required from the fuel cell arrangement over an upcoming time range; a shutdown duration time of each fuel cell system, indicative of the time elapsed since the fuel cell system was lastly shutdown, and a predetermined degradation characteristic of each fuel cell system as a function of shutdown duration time.

Abstract: A vehicle includes a first axle provided with at least a pair of first wheels, and a second axle provided with at least a pair of second wheels. The second axle is a steered axle allowing said second wheels to be turned. At least one first electric machine provides propulsion torque to the first axle. At least one second electric machine provides propulsion torque to the second axle. A control unit is configured to control the first and second electric machines, wherein the control unit is configured to limit the propulsion torque provided by said at least one second electric machine in dependence of a current state of the second axle.

Abstract: A method for controlling a vehicle, the method comprising obtaining route data representing information about a portion of a route to be travelled by the subject vehicle and determining an efficient speed of the subject vehicle at a position along the route portion, in dependence on the route data, on a cost of operating the subject vehicle along the route portion, and on a progress of the subject vehicle along the route portion, comprising determining, independently of the step of determining an efficient speed, a maximum safe speed at the position along the route portion, in dependence on the route data, with an aim to avoid an accident involving the subject vehicle, wherein the maximum safe speed forms an upper limit of the subject vehicle speed at the position.

Abstract: An electric machine for a heavy-duty vehicle, the electric machine including a stator and a rotor separated by an air gap, where the stator includes a stator reconfiguration device arranged to modify a magnetic property of the stator, wherein the stator is mechanically reconfigurable by the stator reconfiguration device to allow control of magnetic flux in the air gap.

Abstract: Techniques for automatic reading of marked consumables are disclosed. The techniques involve a reader having a plurality of sensors for receiving a marked consumable and detecting includes markings on the consumable, regardless of the orientation of the consumable to the reader.

Abstract: A computer system determines a selected path to be taken by a vehicle. The system monitors alternative paths for the vehicle; based on the monitoring, determines that the vehicle approaches at least two alternative paths having different properties; determines a probability of the vehicle taking each of the at least two alternative paths having different properties; compares the probabilities of the at least two alternative paths to each other; and based on a result of the comparison of the probabilities, selects a selected path amongst the at least two alternative paths.

Abstract: A control system arranged to control transfer of energy to and from a heavy-duty vehicle, wherein the control system implements an application programming interface, API, configured to allow connections between control modules of the heavy duty vehicle and/or from one or more external entities to the vehicle wherein the control system is configured to determine an available amount of energy for transfer from the vehicle to an external consumer, and/or a desired amount of energy to transfer to the vehicle from an external energy source, wherein the control system is configured to exchange information related to the available amount of energy for transfer from the vehicle via the API, and wherein the control system is configured to exchange information related to the available amount of energy for transfer to the vehicle via the API.

Abstract: A computer-implemented method estimates a state of health of a humidifier of a fuel cell system for a vehicle. The method includes in response to determining that a predefined condition for vehicle onboard measurements is fulfilled: performing step response measurements, comprising measuring parameters related to dynamic response of water mass transport and heat transport of the humidifier when step increases of the fuel cell system are performed, wherein a step increase is indicative of an instantaneous power increase of the fuel cell system, and fitting the measured parameters in a humidifier aging model and therefrom estimating the state of health of the humidifier.

Abstract: A computer-implemented method determines a degradation state of a turbo and/or a humidifier of a fuel cell system for a vehicle. The fuel cell system includes a fuel cell stack, the turbo and the humidifier. The method includes obtaining a fuel cell system efficiency value which corresponds to a measured efficiency decrease of the fuel cell system during use with respect to a first reference efficiency, obtaining a fuel cell stack efficiency value which corresponds to a measured efficiency decrease of the fuel cell stack during use with respect to a second reference efficiency, and determining the degradation state of the turbo and/or the humidifier based on a difference between the fuel cell system efficiency value and the fuel cell stack efficiency value.

Abstract: An electric energy dissipating system for a vehicle. An air flow producing unit provides a pressurized air flow through a fluid conduit. A polyphase electric machine runs on a predefined number of phases. The air flow producing unit is mechanically connected to, and operated by, the electric machine. An electric brake resistor arrangement is located downstream of the air flow producing unit, and comprises one resistor unit for each one of said phases. An electric power system is configured to receive electric power generated by an electric traction motor during braking of the vehicle. The power system comprises an inverter which converts a DC input into a polyphase AC output. The electric machine and the resistor arrangement are electrically connected to the inverter in parallel, such that each phase of the AC output of the inverter is connected to a respective phase of the electric machine and to a respective resistor unit, in parallel.

Abstract: System for supplying compressed air to a fuel cell of a vehicle, comprising a first compressor having an inlet for receiving air and an outlet for delivering compressed air to the fuel cell; an air storage tank arranged upstream and in series with the first compressor and configured to store compressed air of high pressure; an air selection control assembly comprising a selection valve and a switch actuator configured to operate the selection valve, wherein said selection valve is arranged in between air storage tank and inlet of the first compressor, and further in fluid communication with an inlet conduit for receiving fresh air, said switch actuator being configured to operate the selection valve to selectively control flow of air to the first compressor such that air can be supplied from the air storage tank to the first compressor or from the fresh air inlet conduit to the first compressor.

Abstract: The present disclosure relates to a method for controlling at least one actuator of a vehicle, the actuator being configured to apply a torque on at least one wheel of the vehicle, wherein the applied torque is determined by a control function associated with a control bandwidth, the method comprising configuring the control function to control the applied torque to reduce a difference between a first parameter value related to a current rotational speed of the wheel and a second parameter value related to target rotational speed of the wheel; obtaining data indicative of a current operating condition of the vehicle; setting the control bandwidth of the control function in dependence of the current operating condition of the vehicle; and controlling the actuator using the control function.

Abstract: The present disclosure relates to an air management system and a method for controlling an intake air pressure and an exhaust back pressure of a fuel cell system. It further relates to an arrangement comprising a fuel cell system and such an air management system, and to a vehicle. The air management system includes an air pressurizing device arranged to feed intake air to an air compressor of the fuel cell system, a pressure regulating device arranged for regulating the exhaust back pressure, a pressure detection device for detecting an ambient air pressure, and a control device configured to control the air pressurizing device and the valve in dependence on the detected ambient air pressure, wherein the control device is configured to control the intake air pressure to a predetermined first pressure level, and to control the exhaust back pressure to a predetermined second pressure level.