To address the long shaft

complex structure and low integration of traditional main-auxiliary exciter systems

a novel phase-conversion and frequency-doubling brushless exciter was proposed based on stator-rotor bilateral out-of-phase AC topology. On the conversion of three-phase power to a six-phase frequency-multiplied rotating rectifier power supply

the basic principle and structure were elaborated

tailored electromagnetic design criteria was established

and the optimal scheme was determined through key parameter analysis. A finite element model was built to investigate its electromagnetic characteristics under no-load and load conditions. For coupling-dominated high-order combined harmonics

a dual suppression method of double Y-shaped winding and stator skewed slot was proposed. Results show that the exciter features excellent AC waveform sinusoidality and stable DC output

providing a new technical path for high-quality low-ripple excitation power supplies.