TODAY’S PATENT – ELECTRIC SYSTEM FOR ELECTRIC VEHICLE
This invention “Electric system for electric vehicle” was invented by Shigenori Kinoshita and granted a patent on 6th April 1998 by the South Korea patent office bearing patent grant number KR0127288B1 to the patentee.
The present invention relates to an electric system of an electric vehicle that enables a secondary battery that can be easily charged without using a large capacity and a large charging system. The electrical system can maintain the integrity of the power on the distribution network during charging. When charging the secondary battery, the switch connecting the inverter to the AC motor is opened, and then AC voltage from the external distribution network is supplied to the AC side of the inverter. The inverter rectifies the AC voltage to the DC voltage under the control of the control circuit so that the secondary battery is charged to the DC voltage. In another example, the windings of the AC motor can be connected between the power distribution network and the inverter by the switching action of the three-pole contactor so that the windings act as AC reactors.