3 A motor winding switching system with independent realtime switching and with stable switching current for a 3-phase motor

摘要

The present invention performs a connection conversion of the winding of the motor in order to increase the electrical driving efficiency of the motor of the phase winding variable structure, in this case, independent real-time winding of each phase of the three-phase motor to minimize the instability of the current that may occur during switching A motor winding switching system having a switching function and a stable switching switching current characteristic, the battery supplying a DC power supply; A motor driving a driving wheel of the electric vehicle; A switch block installed in the winding of the motor and configured of a plurality of switches for converting a winding connection; An inverter that transfers an output voltage of three phases to a winding of the motor when DC power is supplied from the battery; And a motor winding switching switch controller configured to selectively turn on / off the switches of the switch block when the detected current satisfies a predetermined condition by sensing the current of the motor. By the motor winding switching system as described above, by introducing a variable winding switching structure motor driving system that can change the winding in real time, it is possible to obtain the optimum driving efficiency according to the driving conditions when the electric vehicle driving.