REGENERATIVE CONTROLLER FOR ELECTRIC MOTOR, REGENERATIVE DRIVER FOR ELECTRIC MOTOR, AND POWER-ASSISTED VEHICLE

[Problem] To increase the opportunities for recovering regenerative power by wide-range regenerative control in various running states of a power-assisted vehicle. [Solution] A regenerative controller for an electric motor includes: a wheel rotation detection unit provided on a vehicle and detecting a rotation amount of a wheel that is driven via a crank rotated by human power; a crank rotation detection unit that detects a rotation amount of the crank; and a controller that calculates a first value based on the rotation amount of the wheel, a second value based on the rotation amount of the crank, and control information based on at least the second value among the first value and the second value for regenerative control of a power storage device regeneratively charged by an electric motor that supplies driving power to the wheel, the controller controlling a regeneration amount of the electric motor in accordance with the control information.