System and method for controlling a synchronous machine are provided. The method allows for calculating a stator voltage index. The method further allows for relating the magnitude of the stator voltage index against a threshold voltage value. An offset signal is generated based on the results of the relating step. A respective state of operation of the machine is determined. The offset signal is processed based on the respective state of the machine.
This invention was made with U.S. Government support through Definitized Subcontract C-HEV-5A under MRI/CHRYSLER LETTER SUBCONTRACT NO. ZAN-6-16334-01, which subcontract was in turn issued under MRI/CHRYSLER PRIME CONTRACT NO. DE-AC36-83CH10093" awarded by the Department of Energy, and, in accordance with the terms set forth in said contracts, the U.S. Government may have certain rights in the invention.