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Notes - Wind Turbine ISR-G (view source)
Revision as of 15:41, 5 November 2020
, 15:41, 5 November 2020no edit summary
These are notes for my wind turbine independent study with Jeff Dusek.
##11/05/2020
### Newly structured wiki page for wind turbine system
All research insights, prototyping steps, and other system information is documented in [[Wind turbine system]].
### Twisted Savonius V1
[[File:CAD-v1-savonius.png|border|thumb|CAD of twisted Savonius prototype]]
[[File:Savonius-prototype-v1.jpg|border|thumb|V1 of twisted Savonius prototype]]
We attempted to prototype a twisted Savonius turbine to allow a more continuous application of force when the wind turbine spins. Ideally, both sails would be slightly offset to each other to allow airflow from one airfoil to the other. Such an offset can be seen in the following picture that inspired our design.
[[File:Savonius-twisted-airfoil.png|frameless|border|]]
With our next prototype, we seek to combine a twisted Savonius turbine with a Gorlov turbine (Rajdeep Nath Dr. John Rajan; How to Design and Fabricate a Vertical Axis Wind Turbine: Design, Analysis, and Fabrication using Gorlov and Savonius Blades (p. 75)). We can 3D print the blades but might want to scale down the prototype to decrease printing time.
[[File:Savonius-gorlov-waterpump.jpeg|frameless|border|]]
### How to charge our batteries
We seek to charge our battery system with the energy obtained from the wind turbine. However, our current system diagram connects the AC rectifier to the inverter, which outputs 110 V alternating current (US outlets). As the energy output from the wind turbine will vary quite a lot, we need to charge the batteries with direct current (DC). For that purpose, we might have to acquire a wind turbine battery charge controller that can handle high voltages (0-200 V) to charge our battery system. Tae Chang offers a [Battery Charge Controller](https://tcnet.en.ec21.com/Battery_Charger_Controller--1105310_1105320.html). We probably need a _600 VDC 24v wind turbine MPPT charge controller 2500W_. Most charge controllers seem to be in the range of 200-300 VDC ([example](https://www.grainger.com/product/55HX52?cm_mmc=PPC:+Google+PLA&ef_id=CjwKCAiA4o79BRBvEiwAjteoYOv_peCpu8ur8vgakfuuD9tEog_f5FFEEgu7gsxPleKhCmGqSbyKoRoCkEUQAvD_BwE:G:s&s_kwcid=AL!2966!3!264955915673!!!g!461787465034!&gucid=N:N:PS:Paid:GGL:CSM-2295:4P7A1P:20501231&gclid=CjwKCAiA4o79BRBvEiwAjteoYOv_peCpu8ur8vgakfuuD9tEog_f5FFEEgu7gsxPleKhCmGqSbyKoRoCkEUQAvD_BwE)), which might be enough considering wind speeds in our area.
##10/29/2020