Notes - Wind Turbine ISR-G - Revision history

Magic at 22:50, 16 January 2021

2021-01-16T22:50:00Z

Lsanten at 20:58, 3 December 2020

2020-12-03T20:58:59Z

Lsanten at 16:16, 12 November 2020

2020-11-12T16:16:25Z

Lsanten at 13:47, 12 November 2020

2020-11-12T13:47:11Z

Lsanten at 21:25, 11 November 2020

2020-11-11T21:25:43Z

Lsanten at 21:24, 11 November 2020

2020-11-11T21:24:33Z

Lsanten at 20:46, 11 November 2020

2020-11-11T20:46:34Z

Lsanten at 17:00, 5 November 2020

2020-11-05T17:00:50Z

Lsanten at 16:02, 5 November 2020

2020-11-05T16:02:20Z

Lsanten at 15:51, 5 November 2020

2020-11-05T15:51:19Z

@@ Line 231: / Line 231: @@
 - azimuth - rotation of rotor to generator
 - yaw - rotation of nacelle about vertical tower
-- pitch - angle/pitch of blades about their lengthwise axis
+- pitch - angle/ pitch of blades about their lengthwise axis
 __Towers__

@@ Line 7: / Line 7: @@
 ### Tower design
-[[File:Wooden-tower-2.JPG|border|thumb|6x6s with cross beams]]
+[[File:Wooden-tower-2.JPG|border|thumb|potential design: 6x6s with cross beams]]
 A tower design with four pressure-treated 4x4s or 6x6s that are connected via diagonal crossbeams on the outside and plateaus seem reasonable.

@@ Line 12: / Line 12: @@
 On this [website](https://www.rockridgewindmills.com/photo-video-gallery/new-windmill-projects/big-wood-tower/) you can find some inspiring images.
-[[File:Timber-tower-2.png|300px]]
+[[File:Tower-design-v1.JPG|300px]]
 ### Small Scale Wind Turbines Optimized for Low Wind Speeds

← Older revision		Revision as of 13:47, 12 November 2020
Line 13:		Line 13:

	[[File:Timber-tower-2.png\|300px]]		[[File:Timber-tower-2.png\|300px]]
		+
		+	### Small Scale Wind Turbines Optimized for Low Wind Speeds
		+
		+	Letcher, T. (2010). [Small scale wind turbines optimized for Low Wind Speeds](https://drive.google.com/file/d/1ZQyqHlQZY_gyVylVg2PHsEZCPJwZ3cGe/view?usp=sharing).
		+
		+	### 10 Wind Turbines That Push the Limits of Design
		+
		+	https://www.popularmechanics.com/science/energy/a4428/4324331/
		+
		+	### Design and Manufacture of a Cross-Flow Helical Tidal Turbine
		+
		+	Anderson, J., Hughes, B., Johnson, C., Stelzenmuller, N., Sutanto, L., & Taylor, B. (2011). [Capstone Project Report: Design and Manufacture of a Cross-flow Helical Tidal Turbine](https://drive.google.com/file/d/110NNrJwMsjzH_Jbfal9jF5kHzRMOwEfB/view?usp=sharing). University of Washington, Washington.

	##11/05/2020		##11/05/2020

@@ Line 7: / Line 7: @@
 ### Tower design
-[[File:Timber-tower-2.png|border|thumb|]]
+[[File:Wooden-tower-2.JPG|border|thumb|6x6s with cross beams]]
 A tower design with four pressure-treated 4x4s or 6x6s that are connected via diagonal crossbeams on the outside and plateaus seem reasonable.
 On this [website](https://www.rockridgewindmills.com/photo-video-gallery/new-windmill-projects/big-wood-tower/) you can find some inspiring images.
-[[File:Wooden-tower-2.JPG|300px]]
 ##11/05/2020

← Older revision		Revision as of 20:46, 11 November 2020
Line 2:		Line 2:

	These are notes for my wind turbine independent study with Jeff Dusek.		These are notes for my wind turbine independent study with Jeff Dusek.
		+
		+	##11/12/2020
		+
		+	### Tower design
		+
		+	[[File:Timber-tower-2.png\|border\|thumb\|]]
		+
		+	A tower design with four pressure-treated 4x4s or 6x6s that are connected via diagonal crossbeams on the outside and plateaus seem reasonable.
		+	On this [website](https://www.rockridgewindmills.com/photo-video-gallery/new-windmill-projects/big-wood-tower/) you can find some inspiring images.

	##11/05/2020		##11/05/2020

← Older revision		Revision as of 17:00, 5 November 2020
Line 4:		Line 4:

	##11/05/2020		##11/05/2020
		+
		+	### up next
		+
		+	- think about Gorlov blade design - [Onix 1 3D printer](https://markforged.com/3d-printers/onyx-one) - prints with carbon embedded - build volume 320 x 132 mm 154mm tall
		+	- scale down based on reynolds number - relevant dimension: qart of the foil, dynamic viscosity [paper](https://asmedigitalcollection.asme.org/energyresources/article-abstract/137/5/051208/372961/Small-Scale-Wind-Turbine-Testing-in-Wind-Tunnels?redirectedFrom=fulltext)
		+	- look into motor shaft sealing water - propellor shaft seals - drive shaft seal
		+	- https://wes.copernicus.org/preprints/wes-2020-66/wes-2020-66.pdf
		+	- final deliverable
		+	- tower design
		+	- email STI files to Tim or Daniela

	### Newly structured wiki page for wind turbine system		### Newly structured wiki page for wind turbine system

@@ Line 12: / Line 12: @@
 [[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.
+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. As the Savonius turbine is based on drag, it has a high starting torque, which will allow for lower self-starting speeds.
 [[File:Savonius-twisted-airfoil.png|frameless|border|]]
@@ Line 23: / Line 23: @@
 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 (0-600 V from the AC rectifier) to charge our 24 V 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

@@ Line 22: / Line 22: @@
 ### 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.
+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 (0-600 V from the AC rectifier) to charge our 24 V 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