Introduction of inductive brushless motor and non-inductive brushless motor

1. The difference between inductive brushless motor and non-inductive brushless dc motor.

The sense of brushless in refers to the "Hall sensor", so what is "Hall"? Hall refers to the Hall effect. Simply put, when the current is perpendicular to the external magnetic field through the conductor, there will be a potential difference between the two ends of the conductor perpendicular to the direction of the magnetic field and the current. Through the Hall effect, it is easy to know whether the motor is running at high speed or low speed. It can be seen that the non-inductive brushless motor is a brushless motor without Hall sensor feedback, which indirectly detects the rotor position commutation through the voltage and current changes in the motor winding.

2. Inductive brushless motor and non-inductive brushless motor characteristics

Inductive motor can know the position of the rotor when it is at rest, and the non-inductive motor needs to rotate to determine the rotor position, so the non-inductive motor will shake when it just starts and stops, and in brief, it will shake when it starts and stops; Inductive motors use Hall components, are not susceptible to interference, and are more accurate, so they can be applied to fast start and fast stop conditions, and usually provide better low-speed torque performance because they can accurately control the reversal at low speeds and even at rest.

3. Use scenario of inductive brushless motor and non-inductive brushless motor

When choosing inductive motor or non-inductive motor, the following aspects need to be considered:

1). Speed range: If the speed is higher, it is recommended to choose non-inductive motor; If the speed used is low, it is recommended to choose inductive motor.

2) Control accuracy: If high-precision control is required, it is recommended to choose inductive motor; If the control requirements are relatively low, it is recommended to choose a non-inductive motor.

3) Cost factor: If the cost requirements are low, it is recommended to choose non-inductive motor; If the accuracy and operating stability requirements are high, it is recommended to choose inductive motor.

4). Control distance: inductive motor can be used when the distance is less than 3 meters, and non-inductive motor is recommended when the distance is greater than or equal to 3 meters.

All in all, the non-inductive motor is suitable for small and medium power, high-speed operation, such as fans, model toys, etc. Inductive motor is suitable for high-precision, high-power occasions, such as machine tools, automation equipment and so on

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