Sep 30, 2009 #1 V vishnu.m277 Newbie level 1 Joined Aug 15, 2009 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location India Activity points 1,287 Please HELP me to solve hi, am doing project on 7-level inverter with fundamental switching frequency strategy , for that i need to solve the fallowing equations by Newton-Raphson method. Please help me on solving below equations cosΘ1+cosΘ2+cosΘ3=0.6 cos5Θ1+cos5Θ2+cos5Θ3=0 cos7Θ1+cos7Θ2+cos7Θ3=0
Please HELP me to solve hi, am doing project on 7-level inverter with fundamental switching frequency strategy , for that i need to solve the fallowing equations by Newton-Raphson method. Please help me on solving below equations cosΘ1+cosΘ2+cosΘ3=0.6 cos5Θ1+cos5Θ2+cos5Θ3=0 cos7Θ1+cos7Θ2+cos7Θ3=0
Oct 1, 2009 #2 _Eduardo_ Full Member level 5 Joined Aug 31, 2009 Messages 295 Helped 118 Reputation 238 Reaction score 103 Trophy points 1,323 Location Argentina Activity points 2,909 Re: Please HELP me to solve vishnu.m277 said: cosΘ1+cosΘ2+cosΘ3=0.6 cos5Θ1+cos5Θ2+cos5Θ3=0 cos7Θ1+cos7Θ2+cos7Θ3=0 Click to expand... The solution doesn't exist for 0< θi < Π/2 cosΘ1+cosΘ2+cosΘ3 = K cos5Θ1+cos5Θ2+cos5Θ3 = 0 cos7Θ1+cos7Θ2+cos7Θ3 = 0 No exist triplets 0< θi < Π/2 for K < ~1.2
Re: Please HELP me to solve vishnu.m277 said: cosΘ1+cosΘ2+cosΘ3=0.6 cos5Θ1+cos5Θ2+cos5Θ3=0 cos7Θ1+cos7Θ2+cos7Θ3=0 Click to expand... The solution doesn't exist for 0< θi < Π/2 cosΘ1+cosΘ2+cosΘ3 = K cos5Θ1+cos5Θ2+cos5Θ3 = 0 cos7Θ1+cos7Θ2+cos7Θ3 = 0 No exist triplets 0< θi < Π/2 for K < ~1.2