Exemplary embodiments are directed to bidirectional wireless power transfer using magnetic resonance in a coupling mode region between a charging base (CB) and a battery electric vehicle (BEV). For different configurations, the wireless power transfer can occur from the CB to the BEV and from the BEV to the CB.

An electric vehicle control device includes: a main transformer to convert AC voltage input to an input winding thereof from an AC power source, and output converted AC voltage from each of a plurality of output windings; a plurality of converter main circuits, each connected to one of a plurality of secondary windings included in the output windings, to convert AC voltage output from connected secondary windings into DC voltage; and a plurality of converter controllers, each targeting for control one of the converter main circuits, to control by pulse width modulation the control-target converter main circuit, by comparing a signal wave and carrier wave. Each of the converter controllers determines a phase angle correction amount of the signal wave and/or the carrier wave, in response to operating state of a load supplied power through a predetermined output winding among the output windings.

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

An auxiliary power supply device includes: a resonance-type inverter circuit to convert DC power input from a DC power supply to AC power, a primary coil for input of AC power from the inverter circuit, a transformer for output of AC power from a secondary coil insulated from the primary coil, a converter circuit for conversion of AC power from the transformer to DC power, a filter condenser for smoothing of DC voltage from the converter circuit, and an inverter controller for output of a gate signal for causing operation of switching elements of the inverter circuit. The inverter controller, in a charging mode for charging the filter condenser, makes pulse width of the gate signal smaller than when in a running mode for running of electric rolling stock, and gradually increases the pulse width in accordance with an elapsed time under control in the charging mode.

The present disclosure relates to an electric vehicle charging station including a transformer. The transformer is a multi-winding transformer including one primary winding and a plurality of secondary windings. The secondary windings are electrically isolated from one another. The electric vehicle charging station further includes an AC/DC converter to which a secondary winding is connected.

Method and apparatus are disclosed for vehicle on-board multiphase power generation. An example vehicle includes an engine and a generator electrically coupled to the engine. The example vehicle also includes a phase converter electrically coupled to an input connector and the generator and an output connector electrically coupled to the phase converter. The phase converter provides multi-phase power to the output connector using power from the generator and power from a secondary source connected to the input connector.

Charging station for electric vehicles with an induction coil arranged for inductive coupling with an induction coil of an electric vehicle, a grid connection point arranged for connection to an electrical grid, a meter arranged to obtain an electrical power flow from the induction coil to the grid connection point, and a processor. In order that an inductive feedback from an energy storage of an electric vehicle can take place in a grid compatible manner, it is provided that the processor generates at least one synchronization signal for the electric vehicle coupled to the induction coil for synchronization of the input voltage at the induction coil with a grid frequency at the grid connection point. Also provided are an electric vehicle and a corresponding system.

A converter controlling device for a hybrid vehicle and a converter controlling method for a hybrid vehicle. A monitor monitors a state of charge (SoC) of a low voltage battery, a SoC of a high voltage battery, and a load value of an electronic load. A comparator compares a level of the SoC of the low voltage battery, a level of the SoC of the high voltage battery, and the load value of the electronic load with a first charging threshold value, a second charging threshold value, and a load threshold value. A determiner determines whether to adjust an output control value of a converter. A control value adjuster decreases the output control value of the converter to be lower than a level during normal control or increases the output control value of the converter to be higher than the level during the normal control.

There is provided an electric traction system, comprising: a step-down transformer comprising a primary winding for operatively coupling to an AC power supply and a secondary winding which is inductively coupled to the primary winding; a traction converter module comprising a first input terminal and a second input terminal which are operatively coupled to the secondary winding, and a plurality of AC-to-AC power converters, each of which comprises first and second input nodes, configured to receive AC power and output nodes configured to supply AC power, wherein the first and second input nodes, of the plurality of AC-to-AC power converters are electrically connected in series between the first input terminal and the second input terminal; and at least one electric motor configured to be driven by the traction converter module.

A power conditioning system includes a fuel cell connected to a load, a fuel cell converter connected between the fuel cell and the load and converting an output voltage of the fuel cell at a predetermined required voltage ratio, a battery connected to the load in parallel to the fuel cell and serving as a power supply source different from the fuel cell, and a battery converter connected between the battery and the load and converting an output voltage of the battery at a predetermined required voltage ratio. The power conditioning system includes a current bypass path configured to couple the fuel cell and the load while bypassing the fuel cell converter, an alternating-current voltage application unit configured to apply an alternating-current voltage signal to an output side of the fuel cell converter, and an internal state estimation unit configured to estimate an internal state of the fuel cell on the basis of a predetermined physical quantity when the alternating-current voltage signal was applied by the alternating-current voltage application unit.