A generator system comprising: a generator having a stationary portion and a rotating portion, the generator comprising: a permanent magnet disposed on the stationary portion to generate a magnetic field; an exciter armature winding disposed on the rotating portion and configured to generate an AC voltage in response to rotationally interacting with the magnetic field; a first channel including a first main field winding disposed on the rotating portion, and a first main field power converter disposed on the rotating portion that selectively delivers voltage from the exciter armature winding to the first main field winding in response to a first channel control signal; and a second channel including a second main field winding disposed on the rotating portion, and a second main field power converter disposed on the rotating portion that selectively delivers voltage from the exciter armature winding to the second main field winding in response to a second channel control signal; and a generator control unit in electrical communication with the first channel and the second channel, the generator control unit configured to monitor an output voltage at each of the first channel and the second channel and to generate the first and second control signals based on the output voltage. a generator having a stationary portion and a rotating portion, the generator comprising: a permanent magnet disposed on the stationary portion to generate a magnetic field; an exciter armature winding disposed on the rotating portion and configured to generate an AC voltage in response to rotationally interacting with the magnetic field; a first channel including a first main field winding disposed on the rotating portion, and a first main field power converter disposed on the rotating portion that selectively delivers voltage from the exciter armature winding to the first main field winding in response to a first channel control signal; and a second channel including a second main field winding disposed on the rotating portion, and a second main field power converter disposed on the rotating portion that selectively delivers voltage from the exciter armature winding to the second main field winding in response to a second channel control signal; and a permanent magnet disposed on the stationary portion to generate a magnetic field; an exciter armature winding disposed on the rotating portion and configured to generate an AC voltage in response to rotationally interacting with the magnetic field; a first channel including a first main field winding disposed on the rotating portion, and a first main field power converter disposed on the rotating portion that selectively delivers voltage from the exciter armature winding to the first main field winding in response to a first channel control signal; and a second channel including a second main field winding disposed on the rotating portion, and a second main field power converter disposed on the rotating portion that selectively delivers voltage from the exciter armature winding to the second main field winding in response to a second channel control signal; and a generator control unit in electrical communication with the first channel and the second channel, the generator control unit configured to monitor an output voltage at each of the first channel and the second channel and to generate the first and second control signals based on the output voltage.