It is undeniable that motors with brushes do work, but they have their own set of disadvantages. For example, when you use brushes, it is obvious that they are not going to last forever; maybe not now, but eventually, there will be some wear and tear. It is for this reason that your maintenance costs may go up as you continue to use motors with brushes. At the same time, while using brushes, you have no option but to tolerate sparking as well as the electrical noise. Not to mention, if there are brushes, they are going to take a toll on the maximum speed of the motor.
On the other hand, using a brushless exciter is likely to turn the tables upside down especially because you will then be able to save on maintenance costs without any difficulty. However, this type of exciter not only lowers the maintenance costs, but serves other purposes as well. For example, if all this while you have always believed that electromagnets do not cool off easily, it is time to think again. When brushless excitation comes into the picture, the electromagnets are moved to the stator; in such a situation, it becomes easier for them to cool off.
A brushless exciter will not only counter the disadvantages, but is likely to have some advantages as well; some of these include but not limited to:
• Less electrical noise
• Precise control
• No sparking as no connections would be made or broken
• Higher efficiency; so, if you think that a motor with brushes is more economical, it is high time that you realize if brushes won’t be there, you can achieve greater efficiency, thereby recovering the amount that you may have to spend initially.
• Last but not least, unlike wound rotor motors, motors or generators that make use of the brushless excitation mechanism are often found to have lower maintenance costs especially because rings are not involved in case of the latter.
On the other hand, using a brushless exciter is likely to turn the tables upside down especially because you will then be able to save on maintenance costs without any difficulty. However, this type of exciter not only lowers the maintenance costs, but serves other purposes as well. For example, if all this while you have always believed that electromagnets do not cool off easily, it is time to think again. When brushless excitation comes into the picture, the electromagnets are moved to the stator; in such a situation, it becomes easier for them to cool off.
A brushless exciter will not only counter the disadvantages, but is likely to have some advantages as well; some of these include but not limited to:
• Less electrical noise
• Precise control
• No sparking as no connections would be made or broken
• Higher efficiency; so, if you think that a motor with brushes is more economical, it is high time that you realize if brushes won’t be there, you can achieve greater efficiency, thereby recovering the amount that you may have to spend initially.
• Last but not least, unlike wound rotor motors, motors or generators that make use of the brushless excitation mechanism are often found to have lower maintenance costs especially because rings are not involved in case of the latter.
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