{"id":19956,"date":"2022-08-15T08:18:15","date_gmt":"2022-08-15T08:18:15","guid":{"rendered":"https:\/\/mdr.foobrdigital.com\/?p=6463"},"modified":"2022-08-15T08:18:15","modified_gmt":"2022-08-15T08:18:15","slug":"three-phase-system-over-single-phase-system","status":"publish","type":"post","link":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/2022\/08\/15\/three-phase-system-over-single-phase-system\/","title":{"rendered":"Three Phase System over Single Phase System"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Presently 3-\u00f8 AC system is very popular and being used worldwide for power generation, power transmission, distribution and for electric motors.
\"single<\/p>\n\n\n\n

\"three
Three phase system has the following advantages as compare to single phase system:<\/p>\n\n\n\n

  1. Power to weight ratio of 3-\u00f8\u00a0alternator\u00a0is high as compared to 1-\u00f8 alternator. That means for generation for same amount of\u00a0Electric Power, the size of 3-\u00f8 alternator is small as compare to 1-\u00f8 alternator. Hence, the overall cost of alternator is reduced for generation of same amount of power. Moreover, due to reduction in weight, transportation and installation of alternator become convenient and less space is required to accommodate the alternator in power houses.<\/li>
  2. For\u00a0electric power transmission\u00a0and distribution of same amount of power, the requirement of\u00a0conductor\u00a0material is less in 3-\u00f8 system as compare to 1-\u00f8 system. Hence, the 3-\u00f8 transmission and distribution system is economical as compare 1-\u00f8 system.<\/li>
  3. Let us consider the power produced by single phase supply and 3-phase supply at unity\u00a0power factor. Waveform of power produce due 1-phase supply at unity power factor is shown in figure (C), and figure (D) shows the waveform of power produced due to 3-phase supply.\"single\"three-phase<\/li>
  4. From power waveforms shown in figure (C) and (D) above it is clear that in the 3-phase system, the instantaneous power is almost constant over the cycle results in smooth and vibration-free operation of the machine. Whereas in 1-\u00f8 system the instantaneous power is pulsating hence change over the cycle, which leads to vibrations in machines.<\/li>
  5. Power to weight ratio of\u00a0three phase induction motor\u00a0is high as compare to\u00a0single phase induction motor. Means for the same amount of Mechanical Power, the size of three phase induction motor is small as compared to single phase induction motor. Hence, the overall cost of\u00a0induction motor\u00a0is reduced. Moreover, due to reduction in weight, transportation, and installation of induction motor become convenient and less space is required to accommodate the induction motor.<\/li>
  6. 3-phase induction motor is self-started as the magnetic flux produced by 3-phase supply is rotating in nature with a constant magnitude. Whereas 1-\u00f8 induction motor is not self-started as the\u00a0magnetic flux\u00a0produced by 1-\u00f8 supply is pulsating in nature. Hence, we have to make some arrangement to make the 1-\u00f8 induction motor self-started which further increases the cost of 1-\u00f8 induction motor.<\/li>
  7. 3-phase motor is having better\u00a0power factor<\/li>
  8. Power to weight ratio of\u00a03-phase transformer\u00a0is high as compare to 1-\u00f8 transformer. Means for the same amount of Electric Power, the size of 3-phase transformer is small as compared to 1-\u00f8 transformer. Hence, the overall cost of a transformer gets reduced. Moreover, due to reduction in weight, transportation and\u00a0installation of transformer\u00a0become convenient and less space is required to accommodate the transformer.<\/li>
  9. If a fault occurs in any winding of a 3-phase transformer, the rest of two winding can be used in the open delta to serve the 3-phase load. The same is not possible in 1-\u00f8\u00a0transformer. This ability of 3-phase transformer further increases the reliability of 3-phase transformer.<\/li>
  10. A 3-phase system can be used to feed a 1-\u00f8 load, whereas vice-versa is not possible.<\/li>
  11. DC rectified from 3-phase supply is having the ripple factor 4% and DC rectified from 1-\u00f8 supply is having the ripple factor 48.2%. Mean DC rectified from 3-\u00f8 supply contains fewer ripples as compare to DC rectified from a 1-\u00f8 supply. Hence the requirement of the filter is reduced for DC rectified from a 3-phase supply. Which reduce the overall cost of converter.<\/li><\/ol>\n\n\n\n

    From above it is clear the 3-phase system is more economical, efficient, reliable and convenient as compared to 1-\u00f8 system.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Presently 3-\u00f8 AC system is very popular and being used worldwide for power generation, power transmission, distribution and for electric motors. Three phase system has the following advantages as compare to single phase system: Power to weight ratio of 3-\u00f8\u00a0alternator\u00a0is high as compared to 1-\u00f8 alternator. That means for generation for same amount of\u00a0Electric Power, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[389],"tags":[],"_links":{"self":[{"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/posts\/19956"}],"collection":[{"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/comments?post=19956"}],"version-history":[{"count":0,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/posts\/19956\/revisions"}],"wp:attachment":[{"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/media?parent=19956"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/categories?post=19956"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/tags?post=19956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}