BLDC consists of motor and drive, which is a typical mechatronic product. It is composed of permanent magnet rotor, multi-pole winding stator and position sensor. Brushless DC motors (BLDC) feature high efficiency and excellent controllability, and are widely used in many applications. The BLDC motor has power-saving advantages relative to other motor types. Motor above 5000 rpm is a high speed motor, that is, brushless DC motor above 5000 rpm can be called high speed brushless DC motor.