Predictive motor torque margin calculation for power split hybrid systems with a boost converter

A predictive torque control method for an electrified vehicle having an engine, a power split hybrid transmission connected to the engine and comprising first and second electric motors, and a boost converter, the predictive torque control method comprising:

• controlling, by a control system of the electrified vehicle, the boost converter configured to convert and selectively boost a direct current (DC) voltage from a high voltage bus and a high voltage battery system to alternating current (AC) voltages supplied to the first and second electric motors of the power split hybrid transmission;
• determining, by the control system, base torque commands for the first and second electric motors based on a driver torque request;
• predicting, by the control system, torque margins for the first and second electric motors based on an anticipated transient operating event of the engine;
• and
• proactively controlling, by the control system, the boost converter based on the predicted torque margins for the first and second electric motors, respectively.