A method charges a traction battery (42) with a stationary charging column (20). The method includes registering a charging process by the vehicle charging controller (50) to the charging column charging controller (22) with a low voltage value (U1) as a requested charging voltage (UR). The method then controls an insulation test carried out by the charging-column-side insulation tester (26). The method reports the maximum charging column voltage (UL) to the vehicle charging controller (50), and if the reported maximum charging column voltage (UL) corresponds to a high voltage value (U2) higher than the low voltage value (U1): registering a charging process by the vehicle charging controller (50) to the charging column charging controller (22) with the high voltage value (U2) as a requested charging voltage (UR) and setting the charging voltage adapter (44) to a charging voltage (UL) corresponding to the high voltage value (U2).

A method for charging a traction battery of a vehicle at a stationary charging column includes having the vehicle charging controller register a charging process to the charging column charging controller with a high voltage value of the traction battery as a requested maximum charging voltage. The charging column charging controller then performs an insulation test at an insulation test voltage that corresponds to the requested maximum charging voltage or to the maximum charging column voltage when the latter is lower than the requested maximum charging voltage. The insulation test voltage is measured by a vehicle voltmeter. If the measured insulation test voltage corresponds to the lower voltage value, the vehicle charging controller registers a charging process to the charging column charging controller with the low voltage value as new requested charging voltage and sets the charging voltage adapter to a charging column voltage corresponding to the low voltage value.

A voltage source converter has a half bridge (18) with two current valves (19, 20) connected in series and an arrangement configured to carry out voltage measurements for determining a value of the DC voltage between opposite poles (21, 22) of a DC side of the converter. Each current valve comprises a semiconductor device (23, 24) controlled by an associated gate drive member (29, 30), each forming gate drive parts of one gate drive unit (28) in common to both current valves. The gate drive unit (28) comprises an isolated two-way communication link (33) between the gate drive members. The arrangement is included in the gate drive unit and configured to measure the entire DC voltage between said opposite poles (21, 22). A converter control device (31) calculates and sends control signals to the gate drive unit based on the result of the voltage measurement.

A method for wirelessly or conductively (non-wireless) providing AC or DC power in AC or DC load applications and bidirectional applications.

A power supply system includes: a power converter for converting electric power of any one of a plurality of batteries and supplying the converted electric power to one or more second loads; a switch capable of selectively connecting any one of the plurality of batteries to the power converter; and a controller for comparing remaining capacities of the respective batteries, and when the difference between the highest remaining capacity and the lowest remaining capacity exceeds a predetermined threshold, controlling the switch to connect the power converter to the battery having the highest remaining capacity.

An electric vehicle charging station for connecting to a span of a high or extra high voltage transmission line, comprising: a tap for connecting to the span of the transmission line; a substation comprising one or more power voltage transformers; a plurality of electric vehicle chargers. The power voltage transformers are station service voltage transformers, auxiliary service voltage transformers, or power VTs. Said power voltage transformers may be star-delta transformers or star-star transformers. Said tap may comprises, for each phase of the transmission line: an insulator for linking a first and a second interrupted conductor points of an interrupted transmission line conductor; a drop conductor connected between the first interrupted conductor point and said substation; a shunt connector connected between the second interrupted conductor point and a point of the drop conductor or connected between the first and second interrupted conductor points.

There is provided an information processing apparatus including a travelable information display unit that displays before a discharge, regarding motor-driven movable bodies of a discharge source and a discharge destination driven by using electric power of batteries, information about places to which the motor-driven movable body of the discharge source can move using electric power of the battery left after the discharge by assuming, when information about a discharge amount discharged from the battery of the motor-driven movable body of the discharge source toward the motor-driven movable body of the discharge destination that receives power supply is input, a case in which the discharge amount is discharged from the battery.

An energy storage device charging system applied to a solid state transformer structure is coupled to a power grid and charges a plurality of energy storage devices, or feeds power back to the power grid from the energy storage devices. The charging system includes a conversion module, a bus path, a charging module, and a control unit. A total power conversion capacity of the conversion module is less than a total charging power capacity of the charging module. The control unit respectively allocates a plurality of demand power capacities of the charging units according to a power conversion upper limit value of the total power conversion capacity.

The present invention relates a single-phase and three-phase compatible circuit and a charge-discharge apparatus. The circuit comprises: a terminal, a first bridge arm, a first switch, a second bridge arm, a switch set, a third bridge arm, a fourth switch, two bus capacitors connected in series, and a fifth switch. The terminal is configured to receive or provide an AC power. When the terminal receives or provides a single-phase AC power, the first switch and the fifth switch are turned on and the first and third terminals of the switch set are electrically connected. The third inductor, the third bridge arm and the two bus capacitors form a half-bridge active filter circuit. A regulation module is electrically connected to the two bus capacitors and the third bridge arm, and controls the third bridge arm based on the voltages of the two bus capacitors.

A traction inverter circuit includes a first energy storage device configured to output a DC voltage, a first bi-directional DC-to-AC voltage inverter coupled to the first energy storage device, and a first electromechanical device. The first electromechanical device includes a first plurality of conductors coupled to the first bi-directional DC-to-AC voltage inverter, a second plurality of conductors coupled together, and a plurality of windings coupled between the first plurality of conductors and the second plurality of conductors. The traction converter circuit also includes a charge bus comprising a first conductor coupled to the second plurality of conductors of the first electromechanical device, the charge bus configured to transmit a charging current to or receive a charging current from the first electromechanical device to charge the first energy storage device via the first electromechanical device and the first bi-directional DC-to-AC voltage inverter.