A method for starting an induction machine, the method comprising: scanning a state of the induction machine with different stator frequencies ( ω s, 28) by controlling a supply voltage ( V s) applied to the induction machine; during the scanning, determining a torque related quantity ( m, i sq) from measurements in the induction machine, wherein the torque related quantity ( m, i s9) is positively correlated with an electromagnetic torque (zzz) of the induction machine, so that the torque is raising or falling, when the torque related quantity is increased or decreased, respectively; determining whether a slip value ( β), being a difference between a rotor frequency ( ω r) and a stator frequency ( ω s, 28), is within a slip interval based on the torque related quantity ( m, i sq); when it has been determined that the slip value ( β) is in the slip interval, regulating the slip value ( β) towards zero, wherein the slip value ( β) is regulated to zero by regulating a torque related quantity ( m, i sq) to zero; characterized in that it is determined, whether the slip value ( β) is within the slip interval, when at least one of: a derivative of the torque related quantity ( m, i sq) with respect to the stator frequency ( ω s) is higher than a threshold value; the torque related quantity ( m, i sq) becomes smaller than a maximal absolute value of the torque related quantity ( m, i sq); a magnitude of an actual stator current becomes smaller than a magnitude of a short circuit stator current corresponding to a stator flux magnitude ( Ψ sm, 30) used for scanning of the induction machine; a magnetising component ( i sd) of an actual stator current becomes smaller than a magnitude of a short circuit stator current corresponding to a stator flux magnitude ( Ψ sm, 30) used for scanning of the induction machine. scanning a state of the induction machine with different stator frequencies ( ω s, 28) by controlling a supply voltage ( V s) applied to the induction machine; during the scanning, determining a torque related quantity ( m, i sq) from measurements in the induction machine, wherein the torque related quantity ( m, i s9) is positively correlated with an electromagnetic torque (zzz) of the induction machine, so that the torque is raising or falling, when the torque related quantity is increased or decreased, respectively; determining whether a slip value ( β), being a difference between a rotor frequency ( ω r) and a stator frequency ( ω s, 28), is within a slip interval based on the torque related quantity ( m, i sq); when it has been determined that the slip value ( β) is in the slip interval, regulating the slip value ( β) towards zero, wherein the slip value ( β) is regulated to zero by regulating a torque related quantity ( m, i sq) to zero; characterized in that it is determined, whether the slip value ( β) is within the slip interval, when at least one of: a derivative of the torque related quantity ( m, i sq) with respect to the stator frequency ( ω s) is higher than a threshold value; the torque related quantity ( m, i sq) becomes smaller than a maximal absolute value of the torque related quantity ( m, i sq); a magnitude of an actual stator current becomes smaller than a magnitude of a short circuit stator current corresponding to a stator flux magnitude ( Ψ sm, 30) used for scanning of the induction machine; a magnetising component ( i sd) of an actual stator current becomes smaller than a magnitude of a short circuit stator current corresponding to a stator flux magnitude ( Ψ sm, 30) used for scanning of the induction machine. a derivative of the torque related quantity ( m, i sq) with respect to the stator frequency ( ω s) is higher than a threshold value; the torque related quantity ( m, i sq) becomes smaller than a maximal absolute value of the torque related quantity ( m, i sq); a magnitude of an actual stator current becomes smaller than a magnitude of a short circuit stator current corresponding to a stator flux magnitude ( Ψ sm, 30) used for scanning of the induction machine; a magnetising component ( i sd) of an actual stator current becomes smaller than a magnitude of a short circuit stator current corresponding to a stator flux magnitude ( Ψ sm, 30) used for scanning of the induction machine.