来源：http://www.jnmcd.com 发布时间：2019-01-23 浏览：次
The advantage of using high-power DC motor is that it is easy to start, with strong load capacity, fast speed-up, and with the same load, it saves more power than low-power motor, but reactive power will be relatively large, which will cause certain waste of resources on the grid, but the actual power consumption is very small.
Although the high-power DC motor will be better than the low-power DC motor, but not the higher the power, because too high power will damage the motor, due to overload, motor life is greatly reduced, the nominal power of the motor is generally 80% of the ultimate power, after a period of time, it will cause irreversible harm to the motor. Therefore, the selected DC motor power should be used within its reasonable range.
For example, the power of brushless DC motor is in the range of 6W-200W, while that of high-power DC motor is brushless DC motor, and the power is in the range of 20W-2000W.
Maybe someone will ask, "Why is the power of AC motor larger than that of DC motor?"
这是由于日子中交流电电压大，电机功率P=U*I，U表示电压，I是电流，通常状况交流电和直流电流不会相差太大 大多电压差很多 比如日子用电压是220V 工业用电是380v 而直流电由于一般由储电设备（电池之类）供电，它的电压底子达不到那么高，一般几伏货、十几伏、几十伏这样子。
This is due to the large AC voltage in the day, motor power P = U*I, U means voltage, I is current, usually AC and DC current will not differ too much, most of the voltage difference, for example, daily voltage is 220V industrial power is 380V and DC power is generally supplied by storage equipment (batteries and so on), its voltage base can not reach that high, generally several volts, dozens of volts. Dozens of volts.
What are the advantages of high-power DC motors over AC motors?
Advantages of DC motors:
1. Excellent start-up and speed regulation characteristics
2. The torque of DC motor is relatively large.
3. Repair is cheaper.
4. DC motor is more energy-saving and environmentally friendly than AC.
High-power DC motor has excellent starting and speed regulation characteristics. Therefore, high-power DC motor is used to drive large-scale equipment with high speed regulation function, such as rolling mill.
Of course, DC motors also have some shortcomings.
DC motor production is more expensive, there are carbon brushes, replacement troubles, where carbon brushes are for brushless DC motor, so at this stage, electromechanical brushless DC motor is recommended to users. Because brushless DC motor has no carbon brushes, there is no relevant interface, so it is cleaner, less noise, no protection, and longer service life.
The above information is our Shandong micro-motor sorting and publishing hope to help you all on our website is: http://www.jnmcd.com!