A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

A power distribution system is provided that ensures that a car is able to operate safely in an autonomous mode. The system includes multiple power rails, including a pair of safety critical power rails. Associated with each safety critical power rail is a safety switch, vehicle sensors (e.g., vehicle location and obstacle sensors), vehicle actuators (e.g., braking and steering actuators) and an autonomous control unit. If a fault is detected during vehicle initialization or general operation, the safety switch which detected the fault opens and that particular power rail is decoupled from the general purpose power rail as well as the remaining safety critical power rail. The remaining safety critical power rail is then able to provide power to a sufficient number of sensors, actuators and controllers to allow the car to safely and autonomously complete an emergency stop on the side of the road.

An embodiment method of controlling a brake lamp of a vehicle equipped with an electric motor as a power source includes determining a position of a following vehicle when decelerating through regenerative braking in a coasting situation and performing at least one of correction of an ON threshold according to deceleration or control of regenerative braking torque for deceleration variation in response to the determined position of the following vehicle being in one of a plurality of regions set according to a distance from a rear of the vehicle.

An embodiment method of controlling a brake lamp of a vehicle equipped with an electric motor as a power source includes determining a position of a following vehicle when decelerating through regenerative braking in a coasting situation and performing at least one of correction of an ON threshold according to deceleration or control of regenerative braking torque for deceleration variation in response to the determined position of the following vehicle being in one of a plurality of regions set according to a distance from a rear of the vehicle.

A vehicle has an electric traction chain to supply a drive torque to the wheels, and an energy management system comprising: a generator set configured to generate a first supply voltage and mechanically disconnected from the wheels in every operating condition; a battery storage assembly configured to generate a second supply voltage; a control unit that implements operative conditions of the vehicle, including: (i) powering the electrical traction chain with the first supply voltage; (ii) powering the electrical traction chain with the second supply voltage; (iii) recharging the storage assembly with a network voltage external to the vehicle and coming from a catenary; (iv) recharging the storage assembly with the first supply voltage; and (v) recharging the storage assembly with a recovered voltage generated by the traction chain operating as an electrical generator.

A method of controlling an electric marine propulsion system configured to propel a marine vessel and powered by a power storage system includes presenting on a user interface a plurality of power mode options selectable by a user, including at least a reduced power and an emergency power mode. Upon selection of the reduced power mode by the user, at least one auxiliary devices utilizing power from the power storage system is automatically turned off and the propulsion system is controlled so as not to exceed a first speed limit. Upon selection of the emergency power mode by the user, the at least one auxiliary device utilizing power from the power storage system is turned off and the propulsion system is controlled so as not to exceed a second speed limit that is lower than the first speed limit.

A method of controlling an electric marine propulsion system configured to propel a marine vessel and powered by a power storage system includes presenting on a user interface a plurality of power mode options selectable by a user, including at least a reduced power and an emergency power mode. Upon selection of the reduced power mode by the user, at least one auxiliary devices utilizing power from the power storage system is automatically turned off and the propulsion system is controlled so as not to exceed a first speed limit. Upon selection of the emergency power mode by the user, the at least one auxiliary device utilizing power from the power storage system is turned off and the propulsion system is controlled so as not to exceed a second speed limit that is lower than the first speed limit.

A charging and heating circuit is equipped with an AC voltage connection, a DC voltage connection and a rectifier. The rectifier is connected between the AC voltage connection and the DC voltage connection. The charging and heating circuit further includes a heating resistor which is connected to the rectifier and the rectifier is thereby set up to supply the heating resistor with current. Also described is a vehicle electrical system which includes the charging and heating circuit in addition to an accumulator.

A railway carriage has a number of batteries, a charger associated with each of the batteries and at least one piece of equipment powered by the batteries, and a vehicle monitoring system. The monitoring system includes at least one sensor of a battery state parameter for each battery, a communication network adapted to receive information from each sensor of a battery state parameter and from each charger, and to transmit the received information to a processor. The processor is adapted to process information relating to a battery whose associated charger is switched off or defective using the information received for the other batteries.

In a method for operating a soil-working machine, in particular a soil compactor, wherein the soil-working machine (10) comprises a plurality of consumers of electrical energy fed from an energy store (58), a load state of the energy store (58) is registered and when the presence of a state of excessive load of the energy store (58) is detected, at least one consumer of electrical energy is deactivated and/or the power consumption of at least one consumer of electrical energy is reduced, and/or consumers of electrical energy are put into operation with a time offset in order to avoid entering a state of excessive load of the energy store (58).