Method for a vehicle control unit (VCU) for control of a drive motor section of a two electric motor tandem drive system

摘要

What is disclosed is a method for controlling the Drive Motor Section of a two electric tandem motor apparatus for use in a Hybrid electric drive vehicle. Described is the method used in an exemplary embodiment by a Vehicle Control Unit (VCU) which uses one or more special purpose CPUs to control the selective use of two electric machines "locked" to one another for maximum power needed during acceleration or unlocked for steady state and limited acceleration driving. Also described and claimed is the VCU control of the dual nature of the Drive Motor portion of the system that can be locked to/unlocked from the generator motor to supply power to the vehicle wheels for acceleration and capture energy during deceleration using regenerative braking techniques, while minimizing any start/stop commands to the hydrocarbon fuel powered engine.