Date post: | 10-Jun-2015 |
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Typicla Power Pattern of a Winter Day in Colorado
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Hour of the Day
Po
wer
(MW
)Smart Grid Concept
Wind
Load
Coal
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Performance Prediction theories for Vertical Axis Wind Turbines
i) Self Developed Theory
ii) Single Stream Tube Theory
iii) Multiple Stream Tube Theory
iv) Fixed Wake Theory
Single Stream Tube Model
• The angle of attack in this model, under the assumption of zero degree tilt angle ( = 0) is given by = = tan-1 [ (1-a) cos (+/2) / { + (1-a) sin (+/2)}]
• The value of the induction factor a is inferred numerically through the iterative solution of the following equation in the allowed range of a
2
• 1 / (1-a) = 1 + (Bc/16R) o [{y + sin (+/2)}2 + cos2(+/2)] CL() cos [(+/2) +] d
where y = /(1-a), B is the number of blades used, c is the chord length of the airfoil and R is the radius of the circulation span.
• This scheme suggests an average power of 2
P = (uBA/4) o vr2 [CL() sin - CD() cos ] d
• wherevr
2 = v2 [{ + (1-a) sin (+/2)}2 + {(1-a) cos (+/2)}2]
Doubly-Fed Induction Generator
Off-The-Grid
Fields to be Mastered
* Fluid Dynamics* Structural Mechanics* Materials Sciences* Electro – Generator Science & Technology* Numerical Analysis & CFD* Computer Programming, Modeling & Simulation* Wind Data Analysis & Profile Estimation* Marketing & Cost Analysis* Legislative Requirements* Computer Interfacing / Automation* Energy Storage Devices & Mechanisms ( Batteries,
Fuel Cells, Electrolysis, Air Compression etc. )Making any meaningful contributions in this area requires extraordinary resolve, persistence and perseverance, due to the vast spectrum of disciplines that need to be comprehended, perfected and interconnected
Patent No.
Title Status
141192 A Single Vacuum Tube Based Solar Cooker
Granted
246 / 2011 A Process for Making Low Cost Wind Turbine Electric Generators
Under Process
472 / 2011 A Mould Free Process for Making Ultra Light Weight Wind Turbine Blades
Under Process
515 / 2011 A Self Starting High Speed Vertical Axis Wind Turbine with Distributed Blade Sections
Under Process
538 / 2011 A Gravity Driven Sun Tracking System for Solar Cookers
Under Process
567 / 2011 A Direct Drive Electric Generator for Vertical Axis Wind Turbines
Under Process
589 / 2011 The Juggler’s Drum Knee Separator Under Process
620 / 2011 A Fridge without Power Under Process