Switched reluctance motor and initial activating method thereof

A switched reluctance motor comprising:

• a stator having n poles radially inwardly extending from an inner surface of said stator, a field coil wound about each pole of said n poles;
• a rotor positioned inside said stator, and configured to rotate by a reluctance torque generated between said stator and said rotor;
• a ring magnet positioned around said rotor such that n N-poles and n S-poles of the ring magnet are positioned around said rotor in a ring configuration;
• a parking magnet arranged to face said ring magnet, and configured to stop said rotor at a normal torque generating region by an attractive force between said parking magnet and said ring magnet;
• a sensor facing said ring magnet at a side of said ring magnet opposite said parking magnet, said sensor configured to detect information about a position and speed of said rotor;
• and
• a driving control unit configured to apply a driving pulse to said stator, based on the information about the position and speed of the rotor detected by said sensor,
• wherein said sensor comprises;
• a first sensor facing said ring magnet at a side of said ring magnet opposite said parking magnet;
• and
• a second sensor spaced from the first sensor at a predetermined angle,
• said first and second sensors of said sensor are configured to generate respective first and second pulse signals in accordance with a periodic variation in polarity of said ring magnet sensed by said sensor, and the first and second pulse signals are configured to be generated with a time difference corresponding to the angle between said first and second sensors, and
• wherein said driving control unit is further configured to apply an aligning pulse to said stator when the position of said rotor sensed by said sensor corresponds to a reverse torque-generating region.