The electric motorcycle (M) comprises a support frame, a rear wheel (RW), a front wheel (FW), an electric propulsion motor (E), an
electronic control unit (2) for driving the
electric motor (E) and a wheel anti-lock
system (1) operatively connected to the
control unit (2), the
system (1) having detection means (18) of a slippage condition (SLP) of at least one of the wheels (RW, FW) and limiting means (19) operatively connected to the detecting means (18), able to receive at input at least a maximum regeneration torque value (RTMAX) of the
electric motor (E) of the electric motorcycle (M) and able to limit the maximum regeneration torque (RTMAX) in case of detection of the slippage condition (SLP), wherein the
system (1) comprises
verification means (20) of the friction conditions of the wheels (RW, FW) on the
road surface, in order to verify the presence or not of a high friction condition (HIGH_MU) or a
low friction condition (LOW_MU), wherein the limiting means (19) are operatively connected to the
verification means (20) and, in case of detection of the slippage condition (SLP), are able to limit the maximum regeneration torque (RTMAX) according to the high friction (HIGH_MU) or
low friction (LOW_MU) condition, and wherein the
verification means (20) of the friction conditions comprise:a first detection unit (35) able to detect the high friction condition (HIGH_MU) according to at least an acceleration value (AV_ACC), a pressure value (P1) of a front
brake of the electric motorcycle (M) and an instantaneous torque value (T_IN) of the
electric motor (E);a second detection unit (36) able to detect the
low friction condition (LOW_MU) according to at least a pressure value (P1) of a front
brake of the electric motorcycle (M) and an instantaneous torque value (T_IN) of the electric motor (E)-