METHOD OF AND DEVICE TO SUPPLY ELECTRIC VEHICLES Russian patent published in 2007 - IPC B60L9/00 B60M5/00 

FIELD: transport engineering; electric vehicles.

SUBSTANCE: invention can be used to supply trolleybuses, electric cars, electric loaders, street cars, electric tractors, electric locomotives and other electric vehicles. Proposed method of vehicle supply provides for delivery of electric energy through high-voltage high-frequency converter and single-wire contact system to individual current collectors of vehicles. power is supplied to electric vehicle through air gap between insulated single-wire line installed I road pavement or ground near surface and current collector installed under bottom of vehicle from resonant single-wire power supply system using variable electrostatic field of 0.1-100 kHz and voltage in line of 0.5-500 kV. Voltage across current collector is reduced and converted into dc voltage, electric energy is accumulated and converter into mechanical energy to move vehicle. Device implementing the method contains power source to which frequency converter is connected, single-wire line for each traffic lane and current collectors of electric vehicles. Air gap of 0.1 - 50 м is formed between single-wire line insulated from ground and installed in road pavement or in ground near its surface and current collector mounted under bottom of vehicle. Device includes two resonant circuits, one transmitting and one receiving, and tuned to equal frequency of f₀ = 0.1-100 kHz. Input of transmitting circuit is connected to frequency converter and output is connected to current collector through resonant step-up transformer, single-wire line and air gap. Current collector is made in form of thin insulated sheet made of conducting material and is installed on vehicle parallel to single-wire line.

EFFECT: improved reliability and reduced energy losses.

3 cl, 1 dwg