NOVELTY - The generator has rotor disks (2) holding a set of axially-magnetized alternating pole permanent-magnets (3) attached in a symmetrical circular array. Two rotor angle sensors sense a rotor magnetic field and produce constant peak amplitude sinusoidal signals varying with a rotor angle. Integral power control electronics (5) provide direct current (DC) power by filtered high-frequency pulse-width-modulation (PWM) boost-regulation fly-back for a DC load from a shaft power over a broad range of shaft speeds in responsive to the signals from the sensors.    USE - Brushless self-synchronous direct current (DC) generator for use with a wind turbine e.g. vertical-axis wind turbine and horizontal-axis wind turbine, to generate DC electric power.    ADVANTAGE - The generator facilitates optimal wind turbine loading without incurring re-tooling expenses to achieve a broad power rating range. The axially-magnetized alternating pole permanent-magnets held in the rotor disks to provide an alternating nearly sinusoidal field pattern to a phase of stator windings held in stator disks without magnetically cycling irons in closed magnetic flux paths, so that stator winding current is controlled by integral electronics pulse-width-modulation (PWM) boost regulation to provide the regulated direct current (DC) output power with minimal ripple current from the generator input mechanical shaft power in an effective manner. The generator comprises signal processing electronics controlling stator current based on the filtered high-frequency PWM boost-regulation fly-back, thus efficiently generating the regulated DC current and voltage from wide-speed-range rotational power for minimizing ripple components in the electric power without using large capacitors. The rotor disks and the stator disks are combined to facilitate a wide power range of the generator without using an additional tool. The generator allows iron disks to provide return flux paths for the rotor magnets in the rotor disks without increasing weight of the generator to prevent drawing generator electronics quiescent power from the load when the generator is idle.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a horizontal spin axis generator assembly.    Rotor disks (2)    Axially-magnetized alternating pole permanent-magnets (3)    Iron disks (4a, 4b)    Integral power control electronics (5)    Stator ring (7)