Powertrain configurations for two-motor, two-clutch hybrid electric vehicles

A powertrain for a Hybrid Electric Vehicle (HEV), said powertrain comprising:

• a prime mover;
• a first electric motor-generator, said first electric motor-generator mechanically coupled to said prime mover via a first clutch;
• a second electric motor-generator, said second electric motor-generator mechanically coupled to said first electric motor-generator via a second clutch;
• said first clutch and said second clutch configured to affect dynamic open/closed/slip operation;
• a battery, said battery electrically coupled to said first electric motor-generator and said second electric motor-generator, said battery configured to supply electrical energy to said first electric motor-generator and said second electric motor-generator;
• and
• a controller, said controller configured to supply control signals to said prime mover, said first clutch, said first electric motor-generator, said second clutch and said second electric motor-generator such that said controller is configured to dynamically transition between a plurality of operating modes;
• wherein further said plurality of operating modes comprises one of a group, said group comprising:
• all electric mode, high-torque electric mode, series mode, high regeneration mode, series-parallel mode and parallel mode.