A method of controlling a hybrid powertrain having an electric machine and an engine is provided. The method includes determining a requested power and an excess power for the hybrid powertrain. The requested power substantially meets the needs of the hybrid powertrain. The excess power is non-zero and is not included in the determined requested power. The method also includes absorbing the excess power with the electric machine.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with U.S. Government support under an Agreement/Project number: vss018, DE-FC26-08NT04386, A000, awarded by the Department of Energy. The U.S. Government may have certain rights in this invention.