What details should be noted when using a DC brushless motor?

To facilitate everyone's better mastery of the usage method of DC brushless motors, Compani has summarized the following five details during use:

If there are no special requirements for the product, DC motors are not allowed to operate in reverse connection at the rated voltage. Because once the reverse connection system is operated, it will cause the permanent magnet to demagnetize. If it is necessary to operate in this way, a current-limiting resistor must be added to limit the excessive current.

2. Pay attention to avoiding demagnetization of the permanent magnets due to excessive current, temperature changes, and open magnetic circuits during disassembly and assembly. Especially for alnico permanent magnet motors, magnetic short-circuit protection should be carried out during disassembly and assembly to prevent demagnetization.

When replacing the brushes of a DC brushless motor, it is necessary to first clean the surrounding carbon dust, and then clean the commutator with alcohol or gasoline. At the same time, when using new brushes, pay attention to no-load running-in.

4. When the load is too heavy or a large current is caused by improper use, which burns out the power transistor, a high-power transistor will be used for protection to prevent the driver from being damaged due to the current exceeding the specification.

5. When the load on the motor is not small, the energy returned to the driver from the equipment end when it stops rotating will endanger the driver. Therefore, it is necessary to handle it in combination with an overvoltage protection circuit and a regenerative energy dissipation circuit.

The usage details of DC brushless motors include the above-mentioned operation matters. Have you all understood them clearly? Follow Changzhou Compani Motor Co., Ltd. to learn more about DC brushless motors.