Encyclopedia > Polyphase system

  Article Content

Polyphase system

Polyphase electrical systems supply electrical power in overlapping phases, the most common example being three phase power. Three phase power is commonly found in industrial applications.

These systems exhibit three-phase induction or more. They operate on the principle of a rotating magnetic field in alternate-current circuits. The most common example being three phase power. Three phase power is commonly found in industrial applications. Normal household supply consists of a sine wave[?] of alternating polarity[?], with the voltage rising and falling over time. The average power delivered is about 60% of the rated voltage, or about 70 volts for 110 volt supplies.

Alternate current sine wave voltage points, when the field is graphed and analyzed, show a result of a magnetic field that is rotating (thus producing the alternating polarity). When a three-phase voltage completes one full cycle, the magnetic field has rotated through 360°. In a polyphase system several such supplies are overlapped out of phase to smooth out the total voltage. In these systems the total power supplied is over 90% of the rated voltage, which is useful for driving high-power motors.

Nikola Tesla discovered these types of systems.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Mayenne

... - Wikipedia <<Up     Contents Mayenne Mayenne is a French département, number 53, named after the Mayenne River[?]. Préfecture ...

 
 
 
This page was created in 59.8 ms