How to check the condition of a brushless motor stator and rotor?

　　 Brushless motor stator and rotor They are important components of motors such as generators and starters. The stator is an important part of the motor. The brushless motor stator and rotor consist of a stator core, stator windings, and a frame. The main function of the brushless motor stator and rotor is to generate a rotating magnetic field, while the main function of the rotor is to be cut by electromagnetic lines in the rotating magnetic field to generate (output) current. The motor rotor is the rotating part of the motor. The motor consists of a rotor and a stator, used to achieve the conversion of electrical energy and mechanical energy and mechanical energy and energy conversion devices. The motor rotor system is divided into two motor rotors and generator rotors.

　　The function of the brushless motor stator and rotor is to rotate the drive shaft, providing electrical energy and mechanical energy conversion. The stator refers to the conductor in the magnetic field, the conductor is fixed, and the rotor refers to the electromagnetic coil, which moves relative to the conductor. This relative motion causes the magnetic lines of force to be cut, thereby generating current in the stator coil.

　　The brushless motor stator and rotor are made of iron cores and windings, the windings are made of silicon steel and thick copper conductors, the conductors are insulated and coated with epoxy resin.

　　The brushless motor stator and rotor are equivalent to wires, and the rotor is equivalent to an electromagnet. After the rotor is energized, it is driven to rotate by the engine to form a rotating magnetic field model. Conversely, when the wire cuts the rotating magnetic field, an induced electromotive force will be formed in the wire, and then the switch closes the wire, and the current begins to flow.

　　Strictly speaking, both the stator and the rotor have a magnetic field. The main difference in development lies in the fact that the rotor can generate magnetism through electrical transformation, and the stator generates electricity through magnetic transformation. Both are called armature magnetic fields. During the process of changing the phase sequence of the motor stator power supply, the stator magnetic field also changes, and the motor keeps rotating.

　　The brushless motor is mainly composed of a stator and a rotor, and a stator winding. In order to detect the quality of the stator, it is necessary to confirm whether the parameters of the stator are normal. So what are the common problems of the brushless motor stator and rotor? How to detect the good or bad of the brushless motor stator and rotor?

　　1. Brushless motor stator measuring instrument. For large factories or some laboratories, this method can be adopted. Due to the precise stator testing instrument, the cost is relatively high, and it can be used for testing a large number of stator products. For different stators, only the parameters need to be modified. Different measurement equipment can be customized according to the stator situation. The display screen directly displays unqualified problems, with sound and light alarms, which is intuitive and user-friendly, accurate and efficient.

　　2. Multimeter measurement. Multimeters are widely used, not only for measuring voltage, current, resistance, etc., but also for simple stator measurement, suitable for home use or maintenance.

　　1. Use the multimeter resistance gear to measure the resistance value between the two ends of the stator winding. If it is conductive, it indicates that the stator is normal; if it is not conductive, it indicates that the stator winding is open-circuited;

　　2. Measure whether the stator winding is grounded. Use the multimeter resistance gear to measure the resistance value between the stator winding wire end and the iron core. Normally, it should not be connected. If it is connected or the resistance value is less than 50MΩ, it indicates that the stator winding is grounded or the insulation is poor.