Systems and methods effective to reduce a drag coefficient in a vehicle are described. A system methods may receive first air directed towards an air intake structure at a first speed. The air intake structure may transform the first air into second air of a second speed. The system may direct the second air from the air intake structure to a tunnel structure. The tunnel structure may include an entrance and an exit, where a cross-sectional area of the entrance may be less than a cross-sectional area of the exit. The tunnel structure may expand the second air into expanded air. A third speed of the expanded air may be less than the second speed of the second air. The system may create a second drag coefficient, where the second drag coefficient may be less than the first drag coefficient.

A method is presented. The method includes detecting a determined operating condition of a first power converter that is one of a plurality of first power converters in a power generating unit, and the power generating unit is one of a plurality of power generating units. The method further includes responding to detection of the determined operating condition by: controlling, via at least one remaining first power converter of the plurality of first power converters, a load current flowing through a power bus coupled to the plurality of power generating units, and altering one or more droop characteristics corresponding to one or more second power converters disposed in other power generating units based at least in part on the controlled load current flowing through the power bus, wherein the one or more second power converters disposed in other power generating units are coupled to the power bus.

Provided is a wind powered system which includes a plurality of wind tunnels, a plurality of rotary fans provided in each wind tunnel, a plurality of alternators connected to the plurality of rotary fans to generate electricity, a transformer connected to the plurality of alternators, electric components connected to the transformer, and a battery connected to the transformer and the electric components. The transformer is supplied with the electricity generated by the alternators and outputs electrical energy with a voltage to be supplied to at least one of the electric components and the battery. The plurality of wind tunnels have a plurality of intake inlets which are separated and apart from each other and a single outlet shared by the plurality of wind tunnels.

An electrical machine comprising: at least one stator, at least one module, the at least one module comprising at least one electromagnetic coil and at least one switch, the at least one module being attached to the at least one stator; at least one rotor with a plurality of magnets attached to the at least one rotor, an integrated electrical differential coupled to at least one of the rotors, the at least one integrated electrical differential permitting the at least one rotor to output at least two rotational outputs to corresponding shafts, wherein the at least two rotational outputs are able to move the shafts at different rotational velocities to one another. The electrical machine is configured to fit into a housing, and that can be retrofitted into a conventional vehicle by replacing the mechanical differential.

According to one embodiment, provisioning an amount of power for one or more vehicles can comprise receiving a request indicating a requirement for an amount of power for the one or more vehicles. The request can indicate the requirement for the amount of power for the one or more vehicles individually or in total. A set of management rules can be read from one or more databases. A set of service configuration information and a set of vehicle specific information for the one or more vehicles can also be read from one or more databases. One or more power sources to meet the requirement for the amount of power for the one or more vehicles can be determined based on applying the management rules and using the set of service configuration information and the set of vehicle information and an indication of the determined power sources can be provided.

A charging station comprising a charging unit and an electrical-energy storage unit is integrated into a trailer, the fixed body of a truck, the interchangeable system of a truck, the interchangeable container of a truck, a van, or a trailer towed by a truck or a car.

The present disclosure describes at least a coupling circuit for powering an electric or hybrid aircraft with an output voltage. The couple circuit can include multiple connecting inputs, a charging interface, a connecting output, a high-power diodes arrangement, and a pre-charge circuit. The multiple connecting inputs can connect multiple battery packs. The charging interface can connect to a charger for charging the multiple battery packs. The connecting output can connect with a hardware controller. The high-power diodes arrangement can electrically connect to each respective connecting input and the charging interface. The high-power arrangement can include for each battery pack a first high-power diode and a second high-power diode. The pre-charge circuit can electrically connect to the high-power diode arrangement. The pre-charge circuit can include a first branch with a first switch, and a second branch in parallel with the first branch.

An apparatus comprising an onboard energy storage device, an onboard power conversion device configured to be electrically coupled to an external power source for receiving electrical power therefrom, and at least one drive system electrically coupled to the onboard energy storage device and the onboard power conversion device, wherein the onboard energy storage device and the onboard power conversion device cooperatively provide electrical power for the at least one drive system. A vehicle and a method for managing power supply are also disclosed.

A vehicle charging assembly includes a charging device that is located in the vehicle, in the top of the vehicle, in the chassis of the vehicle, in the hood of the vehicle, or in one of the doors of the vehicle. The outside air is introduced into the charging device and drives the blade unit and the shaft when the vehicle moves, and the air exits from the vehicle from outlets. The charging unit includes two power generating units accommodated in two respective positioning units to prevent the outside air from entering into the positioning units. The power generating units are connected to the shaft and generate electric power to be used to the vehicle or to be stored in the battery units. The power generating unit is coupled to a processing unit which controls the power generating unit to stop or to transfer electric power to the battery unit.

According to one embodiment, provisioning an amount of power for one or more vehicles can comprise receiving a request indicating a requirement for an amount of power for the one or more vehicles. The request can indicate the requirement for the amount of power for the one or more vehicles individually or in total. A set of management rules can be read from one or more databases. A set of service configuration information and a set of vehicle specific information for the one or more vehicles can also be read from one or more databases. One or more power sources to meet the requirement for the amount of power for the one or more vehicles can be determined based on applying the management rules and using the set of service configuration information and the set of vehicle information and an indication of the determined power sources can be provided.