Lecture 2C - Wind Resources Part 2

Lecture 2C - Wind Resources Part 2 - 1/28/11 ECE...

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1/28/11 1 1 ECE 4364/5374G-2C (c) Saifur Rahman 1 Professor Saifur Rahman Electrical & Computer Engineering Dept. Virginia Tech ECE 4364/5374G: Alternate Energy Systems Lecture 2C: Wind Resources, Part 2/2 2 NREL Wind Site (www.nrel.gov/wind) ECE 4364/5374G-2C (c) Saifur Rahman 2
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1/28/11 2 3 ECE 4364/5374G-2C (c) Saifur Rahman 3 1. Weibull Distribution The probability that the wind speed will remain at or under a certain value, V t , is given by the distribution: (3.16) Expected Value 4 ECE 4364/5374G-2C (c) Saifur Rahman 4 Therefore, from eqn. (3.8), F(v " V t ) = k C [ ] v C [ ] 0 V t # k $ 1 exp $ v C ( ) k % ' ( ) * dv Using a variable transformation, let so that (3.17)
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1/28/11 3 5 ECE 4364/5374G-2C (c) Saifur Rahman 5 6 ECE 4364/5374G-2C (c) Saifur Rahman 6 Now changing back to the original variables, (3.18)
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1/28/11 4 7 ECE 4364/5374G-2C (c) Saifur Rahman 7 8 ECE 4364/5374G-2C (c) Saifur Rahman 8
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1/28/11 5 9 ECE 4364/5374G-2C (c) Saifur Rahman 9 So that, 10 ECE 4364/5374G-2C (c) Saifur Rahman
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This note was uploaded on 03/16/2012 for the course ECE 5374G taught by Professor Srahman during the Spring '12 term at Virginia Tech.

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Lecture 2C - Wind Resources Part 2 - 1/28/11 ECE...

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