Why are alternators more common?
Date:
2024/08/28
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Alternators are more common than DC generators, mainly because alternators are more efficient in the transmission process. Since the AC signal has less signal attenuation during long-distance transmission, it can maintain a higher voltage over a long distance. In contrast, a direct-current signal has a large signal attenuation during power transmission, and thus it is difficult to perform power transmission over a long distance.
Details:
Alternators are more common than DC generators, mainly because alternators are more efficient in the transmission process. Since the AC signal has less signal attenuation during long-distance transmission, it can maintain a higher voltage over a long distance. In contrast, a direct-current signal has a large signal attenuation during power transmission, and thus it is difficult to perform power transmission over a long distance.
In addition, alternating current can be more easily stepped up and stepped down through the transformer. DC power requires the use of switching transformers, which makes the system more complex.
In summary, alternators are more common in modern power systems and can transmit power over long distances with high efficiency. DC generators are rarely used and are mainly used in some special applications, such as electric vehicles.
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