Efficient adaptable electric vehicle powertrain architecture and methods of operation

A method of operation of an electric vehicle drive train, the method comprising:

• at a first time, configuring, by a controller of a switching circuitry of a coil driver system, a set of coils or windings of a traction motor to implement a first one of at least two torque profiles depending on a speed and/or torque demand;
• at a subsequent time, reconfiguring, by the controller of the switching circuitry of the coil driver system, the set of coils or windings of the traction motor to implement a second one of the at least two torque profiles depending on change in a speed and/or torque demand;
• at another time when the coil driver system is selectively electrically coupled to an alternating current (AC) grid or a grid-independent AC power source, configuring, by the controller of the switching circuitry of the coil driver system, the set of coils or windings of the traction motor to import power from the AC grid or a grid-independent AC power source;
• and
• at yet another time when the coil driver system is selectively electrically coupled to an alternating current (AC) grid or a grid-independent AC power source, configuring, by the controller of the switching circuitry of the coil driver system, the set of coils or windings of the traction motor to export power the AC grid or a grid-independent AC power source, whereby the coil driver system configures the coils or windings of the traction motor as a power converter to selectively:
• invert, rectify, boost voltage and reduce voltage;
• and
• adjusting a variable direct current (DC) link voltage across a DC voltage bus electrically coupled to the coil driver system at one of the times.