Motors are used in many equipment in daily life, and the efficiency of the equipment can be improved only with the drive of the motor. Brushless DC motors are commonly used in various equipment, which are suitable for most equipment requirements. During the use of the motor, not only electric energy is generated, but also a magnetic field is generated. The following is a detailed explanation of the equivalent magnetic circuit of the motor.
1. In the DC brushless motor, the magnetic circuit form of different motors is also different, but in essence, the magnetic circuit of various motors is composed of permanent magnets, soft magnetic materials, and working air gaps. Among them, Permanent magnets provide magnetic potential. When the magnetic flux passes through the soft magnetic material, it causes the magnetic potential to drop and cause loss (iron loss in the motor).
2. The air gap is an important part of the magnetic circuit. Under the action of the magnetic potential source, the magnetic flux φδ in the air gap is one of the important parameters that determine the size of the motor and affect the performance of the DC brushless motor. A reasonable motor design plan The main part of the magnetic potential should fall in the air gap.
The brushless DC motor has many functions, is quick to use, and basically runs relatively smoothly throughout the process, and it rarely occurs. The equivalent magnetic circuit may affect the performance and some parameters of the motor, which needs to be paid attention to during use. After reading the above article, I believe that everyone has an understanding of the equivalent magnetic circuit of a brushless DC motor, and I believe that you can calmly deal with such problems in the future.
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