System and method for controlling powertrain for reducing power loss of traction motor in vehicle

A method (200) for controlling a powertrain (10) for reducing power loss of a traction motor (10TM) in a vehicle, the method (200) comprising:

• reading, by a main controller unit (102), data from a vehicle speed sensor (104), data from a throttle sensor (106) and data from a motor speed sensor (10S);
• obtaining, by the main controller unit (102), actual speed and torque of the traction motor (10TM) from a traction motor controller (10TMC);
• determining, by the main controller unit (102), actual operating efficiency of the traction motor (10TM) by comparing actual torque and speed of the traction motor (10TM) against predefined data provided in at least one lookup table (T1);
• determining, by the main controller unit (102), operating efficiency required by the traction motor (10TM) in relation to a corresponding torque and speed required by the traction motor (10TM) and a drive axle of the vehicle based on the at least one lookup table (T1) if the actual operating efficiency of the traction motor (10TM) is less than the operating efficiency required by the traction motor (10TM);
• changing, by the main controller unit (102), a speed and torque of the power transmission unit (10PTU) based on the operating efficiency required by the traction motor (10TM);
• and
• operating, by the main controller unit (102), the traction motor (10TM) at required torque and speed based on the operating efficiency required by the traction motor (10TM).