A synchronous soft-start networking control strategy for parallel auxiliary converters of EMU, that is, when a first auxiliary converter is connected to the bus, non-first auxiliary converters complete the networking during an amplitude soft-start process of the first auxiliary converter. Specific solution is: fast networking logic, bus fast-tracking logic and PQ droop networking control strategy. Wherein, the fast networking logic comprises recognizing the first auxiliary converter and the non-first auxiliary converter; the bus fast-tracking logic comprises tracking phase, frequency and amplitude; the PQ droop networking control strategy comprises introducing a correction coefficient K. The synchronous soft-start networking control strategy for the parallel auxiliary converters of EMU can realize quickly and reliably automatic networking in an emergency traction mode of EMU, and significantly shorten networking time in a network normal mode of EMU. Therefore, it can ensure that EMU can complete startup loading within a specified time under various working conditions, which provides strong guarantee for stable and reliable operation of EMU.

A power system of an electric vehicle, a control method and an electric vehicle are provided. The system includes a high voltage battery, a low voltage storage battery, a main drive motor and an electronic controller therefor powered by the high voltage battery, and an auxiliary drive motor and an electronic controller therefor. The electronic controller of the auxiliary drive motor includes a high voltage electronic controller and a low voltage electronic controller. The low voltage electronic controller is configured to operate in a rotation speed closed loop mode when determining that the high voltage battery fails, and to operate in a torque control mode to charge the low voltage storage battery when the high voltage battery is normal and state of charge of the low voltage storage battery is lower than a first preset value.

Vehicles can be equipped to operate in both autonomous and occupant piloted mode. Refueling stations can be equipped to refuel autonomous vehicles without occupant assistance. Refueling stations can be equipped with a fueling control computer that communicates with vehicles via wireless networks to move vehicles between waiting zones, service zones and served zones. Refueling stations can include liquid fuel, compressed gas and electric charging.

Vehicles can be equipped to operate in both autonomous and occupant piloted mode. Refueling stations can be equipped to refuel autonomous vehicles without occupant assistance. Refueling stations can be equipped with a fueling control computer that communicates with vehicles via wireless networks to move vehicles between waiting zones, service zones and served zones. Refueling stations can include liquid fuel, compressed gas and electric charging.

A power supply system for a vehicle includes: a high-voltage battery; a first power supply arrangement; a second power supply arrangement; and a third power supply arrangement, wherein the first power supply arrangement is connected to a first load including at least an autonomous driving system and includes a first DC-DC converter, a first battery, and a connection control unit, the connection control unit being configured to control a connection state between the first DC-DC converter and the autonomous driving system and a connection state between the first battery and the autonomous driving system.

A vehicle driving apparatus includes a first motor, a second motor, and a planetary mechanism, and obtains a driving force by combining motive forces obtained from the first motor and the second motor by a planetary gear of the planetary mechanism. The vehicle driving apparatus includes at least one of a design value and a control quantity in which a frequency ratio between a sound generated by a rotation of the first motor and a sound generated by a rotation of the second motor satisfies a reduction condition of dissonance.

A vehicle driving apparatus includes a first motor, a second motor, and a planetary mechanism, and obtains a driving force by combining motive forces obtained from the first motor and the second motor by a planetary gear of the planetary mechanism. The vehicle driving apparatus includes at least one of a design value and a control quantity in which a frequency ratio between a sound generated by a rotation of the first motor and a sound generated by a rotation of the second motor satisfies a reduction condition of dissonance.

System for autonomously transporting people and/or goods. The system includes at least one wheel, a chassis that supports a payload for transporting at least one of people or goods, and at least one electric motor coupled to the at least one wheel. The at least one electric motor is one of chassis mounted or at least one wheel mounted. The system also includes a battery to power the at least one electric motor.

System for autonomously transporting people and/or goods. The system includes at least one wheel, a chassis that supports a payload for transporting at least one of people or goods, and at least one electric motor coupled to the at least one wheel. The at least one electric motor is one of chassis mounted or at least one wheel mounted. The system also includes a battery to power the at least one electric motor.

An electrically driven construction machine is provided in which, in a case where a plurality of electrically driven construction machines operate simultaneously, it is possible to avoid exceeding the allowable electric power that can be output by the electric power receiving facility of a commercial electric power supply as an external electric power supply while distributing supplied electric power without a work imbalance between different machine bodies according to the respective demanded powers of the plurality of electrically driven construction machines thereby make it possible to perform work efficiently within an allowable electric power of the electric power receiving facility. To this end, a controller 53 computes an own demanded power Pd1 for driving the plurality of hydraulic actuators 13A, 19 on the basis of operation signals of the operation devices 35, 37, computes an allowable power as a power limit value usable by the electric motor 31 on the basis of the own demanded power, the demanded powers of the other electrically driven construction machines received through the communication device 46, and an allowable electric power of the electric power receiving facility 80 of the commercial electric power supply, and controls the electric motor 31 such that a power consumption of the electric motor 31 does not exceed the allowable power.