Electric power generating system with a permanent magnet generator and combination of active and passive rectifiers

An electric power generating system (EPGS) comprising,

• a permanent magnet generator (PMG) comprising:
• a rotor;
• a stator comprising:
• a first armature winding configured to output a first three-phase voltage;
• and
• a second armature winding configured to output a second three-phase voltage;
• a passive rectifier configured to rectify the first three-phase voltage received from the first armature winding;
• an active rectifier configured to rectify the second three-phase voltage received from the second armature winding,
• wherein the passive rectifier is configured to output a first direct current (DC) voltage and the active rectifier is configured to output a second DC voltage;
• and
• a tunable notch filter comprising a capacitor and a variable inductor, the tunable notch filter configured to filter at least one of the first DC voltage and the second DC voltage, the tunable notch filter tunable in response to a rotational velocity of the rotor;
• and
• an auto-tuning notch filter control, comprising:
• a frequency detector;
• a current regulator;
• a pulse width modulator;
• and
• an H-bridge,
• wherein the auto-tuning notch filter control detects a rotational frequency of the rotor and regulates a current through a secondary winding of the variable inductor.