A tractor trailer system includes a tractor and a trailer. The tractor includes a hotel device and an Auxiliary Power Unit (APU) configured to provide electrical power to the hotel device. The trailer is connected to the tractor, and includes a Transport Refrigeration Unit (TRU) having a TRU controller, an electrical TRU component, and a TRU Power Unit. The TRU controller is configured to utilize the APU to provide electrical power to the electrical TRU component during low TRU load conditions, and utilize the TRU Power Unit during high TRU load conditions.

There are provided an apparatus and a method for controlling power of a vehicle. The apparatus for controlling power of a vehicle includes: a first load and a second load; a first power supply supplying power to at least one of the first load and the second load from a main battery; a second power supply supplying power to at least one of the first load and the second load from an auxiliary battery supplied with and charged by the power from the main battery; a switch set including a plurality of switches intermitting lines between the first load, the second load, the first power supply, and the second power supply; and a power controller checking a state of the vehicle and controlling a turn-on or off for the plurality of switches in response to the checked state of the vehicle.

Techniques are described for managing temperature in an autonomous vehicle. An exemplary method comprises performing autonomous driving operations that operate the autonomous vehicle in an autonomous mode, receiving one or more messages from a temperature sensor associated with an electrical device located on or in the autonomous vehicle while the autonomous vehicle is operated in the autonomous mode, determining a cooling technique to reduce the temperature of electrical device, and performing the cooling technique.

Techniques are described for managing temperature in an autonomous vehicle. An exemplary method comprises performing autonomous driving operations that operate the autonomous vehicle in an autonomous mode, receiving one or more messages from a temperature sensor associated with an electrical device located on or in the autonomous vehicle while the autonomous vehicle is operated in the autonomous mode, determining a cooling technique to reduce the temperature of electrical device, and performing the cooling technique.

An apparatus for filtering an electrical power signal in an Ethernet communication system includes a link interface, a power interface, and a filter connected between the link interface and the power interface. The link interface is configured to connect to an Ethernet link. The power interface is configured to connect to one or both of (i) a power-supply that supplies the electrical power signal for transfer over the Ethernet link, and (ii) a circuit that consumes the electrical power signal transferred over the Ethernet link. The filter includes at least (i) a primary inductor configured to filter the electrical power signal transferred to or from the Ethernet link, and (ii) one or more complementary inductors connected in series with the primary inductor, the one or more complementary inductors configured to reduce a parasitic capacitance of the filter.

An apparatus for filtering an electrical power signal in an Ethernet communication system includes a link interface, a power interface, and a filter connected between the link interface and the power interface. The link interface is configured to connect to an Ethernet link. The power interface is configured to connect to one or both of (i) a power-supply that supplies the electrical power signal for transfer over the Ethernet link, and (ii) a circuit that consumes the electrical power signal transferred over the Ethernet link. The filter includes at least (i) a primary inductor configured to filter the electrical power signal transferred to or from the Ethernet link, and (ii) one or more complementary inductors connected in series with the primary inductor, the one or more complementary inductors configured to reduce a parasitic capacitance of the filter.

A message ID decoding method is provided for a system comprising multiple components interlinked by a Controller Area Network bus (CAN-bus) through which messages are sent. The method includes acquiring a CAN-bus message data stream including multiple CAN-bus messages, each including a CAN ID indicating a component from which the corresponding CAN-bus message originated; storing the CAN-bus messages in a first datastore; acquiring an electricity consumption signal indicative of the consumption of the component; storing the electricity consumption signal in a second datastore; generating multiple time-stamp bins each corresponding to an interval in time; selecting the CAN ID and a portion of the electricity consumption signal being from the interval in time corresponding to the time-stamp bin; and determining a regression coefficient, R, indicating a level of relatedness between the selected CAN ID and portion, thereby correlating the CAN ID of the selected CAN-bus message with the component.

A method for operating a braking system, wherein a switchable connection between two connection points is open in normal operation, and a voltage difference across the switchable connection is reduced by recuperation before said switchable connection is closed, which serves to compensate for a disturbance in an on-board electrical system. As a result, it is possible to avoid excess currents in the event of the closing of the switchable connection.

A method for operating a braking system, wherein a switchable connection between two connection points is open in normal operation, and a voltage difference across the switchable connection is reduced by recuperation before said switchable connection is closed, which serves to compensate for a disturbance in an on-board electrical system. As a result, it is possible to avoid excess currents in the event of the closing of the switchable connection.

Technologies described herein pertain to delivering power to primary and accessory electrical components associated with a vehicle that is at least partially electrically powered, as well as to a power source of the vehicle itself. To operate one or more of accessory electrical components and deliver power to a vehicle battery, via a power distribution unit, the embodiments facilitate understanding of dynamic power available to the accessory electrical components as well as the vehicle battery, and distributing of the power in a prioritized manner to optimize the system for a most efficient power delivery process, with regards to power needs and power availability. Managing power supplied to a climate control unit that is used in a transport climate control system providing climate control to at least one of an internal space of a vehicle, may be performed by a controller that is electrically connected to at least the climate control unit.