Four main reasons for the high unit price and cost of brushless DC motors.
In recent years, the application of brushless motors has spread to many industries, and has been favored by users for its advantages such as long life, low noise, high speed, and high power. However, there is also a problem that troubles many customers who want to use brushless motors. Why is the price of DC brushless motors so high?
Understand the reasons for the high price of brushless motors:
1. The brushless motor rotor is equipped with permanent magnet steel to establish the main magnetic field of the motor, which is energy-saving and efficient. The rotor has no current, the motor generates low heat, and its small size can generate greater power. The motor has a large output per unit volume and a high power density.
2. Brushless motor is an evolutionary product of brushed motor. Its working principle is to replace the brush commutation of brushed motors with electronic commutation, so there is no spark caused by mechanical commutation, and it can operate at high speed. Because there is no need to regularly replace carbon brushes, the motor will have higher reliability and better protection performance, suitable for various working environments.
3. Brushless motors do not have electric brushes, so friction is greatly reduced during operation, resulting in smooth operation and significantly reduced noise. There is no carbon brush voltage drop problem at low speed and high current, and it can operate normally even at low speed and high current, with a maximum speed of tens of thousands of revolutions per minute.
4. Drive control is required for brushless motors to operate, start, stop, or control speed.
In addition, it is necessary to choose high-quality materials, molds, and parts. Many production processes require the introduction of advanced automation equipment and the development of efficient tooling, with testing instruments that are more precise and rigorous than before. Many aspects require motor factories to pay higher costs than brushed motors.
