Patent ID: 11927102
Assignee: HAMILTON SUNDSTRAND CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H | IPC F

Claim 11:
12. A method of controlling an aircraft electric power generation and start system (EPGSS), the method comprising:
selectively operating a main machine in one of a start mode or a generator mode, the main machine including a main stator and a main rotor configured to rotate along with a shaft;
operating a starter permanent magnet generator (PMG) electrically connected to a first rectifier, the starter PMG including a first PMG stator and a first PMG rotor configured to rotate along with the shaft; and
operating a generator permanent magnet generator (PMG) electrically connected to a second rectifier, the generator PMG including a second PMG stator and a second PMG rotor configured to rotate along with the shaft;
determining, by a system, one or both of a PMG voltage and a PMG current corresponding to the starter PMG during the start mode;
determining, by the system, a rotational position of the main rotor based on one or both of the PMG voltage and the PMG current.