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Unformatted text preview: Power Factor Without an FWD Analysis for the power factor can be done on a perphase basis. The average power per phase is determined by an integration, with the limits chosen to recognize that the current is zero during part of each halfcycle. ( 29 6 3 1 sin 1.732 ml avg d V P I d α π π π α ϑ ϑ π + + = ÷ ∫ = ( 29 ( 29 ( 29 ( 29 5 3 6 6 6 6 cos cos cos cos 3 3 d ml d ml I V I V π π π π π α α π α α π π = + + = + + = ÷ ÷ ( 29 ( 29 { } ( 29 ( 29 2 2 2 3 2 2sin sin 3sin cos 3 3 d ml d ml d ml I V I V I V α π π π α α π π π + = = + = ÷ ÷ 2 0.8165 3 rms d d I I I = = 6 V ml rms V = ( ) phase rms rms S V I = 3 cos avg P PF S α π = = 22 With an FWD ( 29 ( 29 4 4 3 3 6 6 2 3 3 sin sin 3 d ml avg I V P d d π π π π π π α α ϑ ϑ ϑ ϑ π + + = + ÷ ÷...
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This note was uploaded on 10/05/2011 for the course EECS 101 taught by Professor Hero during the Spring '11 term at National Taipei University.
 Spring '11
 Hero

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