Wind turbine system - Revision history

Lsanten at 19:25, 19 November 2020

2020-11-19T19:25:45Z

Lsanten at 17:41, 19 November 2020

2020-11-19T17:41:17Z

Lsanten at 17:36, 8 November 2020

2020-11-08T17:36:06Z

Lsanten at 17:25, 8 November 2020

2020-11-08T17:25:16Z

Lsanten at 16:02, 5 November 2020

2020-11-05T16:02:19Z

Lsanten at 15:59, 5 November 2020

2020-11-05T15:59:58Z

Lsanten at 15:06, 5 November 2020

2020-11-05T15:06:45Z

Lsanten at 18:56, 1 November 2020

2020-11-01T18:56:10Z

Lsanten at 20:25, 30 October 2020

2020-10-30T20:25:50Z

Lsanten at 20:20, 30 October 2020

2020-10-30T20:20:10Z

@@ Line 15: / Line 15: @@
 __Wind direction meter__ </br>
-## Generator and shaft
+## Tower, shaft, bearings
 ## Tower
@@ Line 162: / Line 175: @@
 - averaging periods of 10 min are commonly used; 30 min period for turbulence studies; the larger integral time scale, the larger should be averaging period; sampling frequencies should be much smaller than the integral time scale
 - you have to detrend the time series to get rid of high-frequency fluctuation

@@ Line 1: / Line 1: @@
 # Current System
@@ Line 19: / Line 5: @@
 [view and comment on system diagram](https://whimsical.com/RTwJtGcE62ijqnrpdg2m85)
-## Equipment manuals
+__Equipment manuals__
 __Aurora 3kW inverter__ - [data sheet](https://drive.google.com/file/d/1b_QylTKJzde8saR7A5cHfEcUz2PQZ7JJ/view?usp=sharing)</br>
@@ Line 28: / Line 14: @@
 __Anemometer__ </br>
 __Wind direction meter__ </br>
 ## Anemometer - wind speed measuring
@@ Line 33: / Line 25: @@
 [[File:Anemometer-roof.jpeg|400px]]
-We are using a Vortex wind sensor. One revolution per second equals 2.5 mph. Since our anemometer has a relay (a mechanical switch), it creates a _switch bounce_. Therefore, we need a debounce circuit. Please refer to [[Electrical Control Unit]] for the repository and more information.
+We are using a Vortex wind sensor. One revolution per second equals 2.5 mph. Since our anemometer has a relay (a mechanical switch), it creates a switch bounce. Therefore, we need a debounce circuit. Please refer to [[Electrical Control Unit]] for the repository and more information.
 # Research and background knowledge

← Older revision		Revision as of 17:36, 8 November 2020
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	Letcher, T. (2010). [Small scale wind turbines optimized for Low Wind Speeds](https://drive.google.com/file/d/1ZQyqHlQZY_gyVylVg2PHsEZCPJwZ3cGe/view?usp=sharing).		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.

← Older revision		Revision as of 17:25, 8 November 2020
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	Battisti, L., Brighenti, A., Benini, E., & Castelli, M. R. (2016, September). Analysis of different blade architectures on small VAWT performance. In Journal of Physics: Conference Series (Vol. 753, No. 6, p. 062009). IOP Publishing. https://iopscience.iop.org/article/10.1088/1742-6596/753/6/062009/pdf		Battisti, L., Brighenti, A., Benini, E., & Castelli, M. R. (2016, September). Analysis of different blade architectures on small VAWT performance. In Journal of Physics: Conference Series (Vol. 753, No. 6, p. 062009). IOP Publishing. https://iopscience.iop.org/article/10.1088/1742-6596/753/6/062009/pdf
		+
		+	### 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).
		+
		+

	## General wind turbine knowledge		## General wind turbine knowledge

← Older revision		Revision as of 16:02, 5 November 2020
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	[[File:Anemometer-roof.jpeg\|400px]]		[[File:Anemometer-roof.jpeg\|400px]]
		+
	We are using a Vortex wind sensor. One revolution per second equals 2.5 mph. Since our anemometer has a relay (a mechanical switch), it creates a _switch bounce_. Therefore, we need a debounce circuit. Please refer to [[Electrical Control Unit]] for the repository and more information.		We are using a Vortex wind sensor. One revolution per second equals 2.5 mph. Since our anemometer has a relay (a mechanical switch), it creates a _switch bounce_. Therefore, we need a debounce circuit. Please refer to [[Electrical Control Unit]] for the repository and more information.

@@ Line 5: / Line 5: @@
 [[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 24: / Line 24: @@
 __Aurora wind interface box/rectifier__ - [manual](https://drive.google.com/file/d/1YciYcLJHPdqsU5kGbLKZFx5bYpHzk-JD/view?usp=sharing)</br>
 __TCMG-3kW Taechang N.E.T. Generator__ - [online specs](https://tcnet.en.ec21.com/3kW_Small_Wind_Turbine--1105310_1105312.html)</br>
-__3kW Discharger Breaker__ - </br>
+__3kW Discharger Breaker - 3K-DIS-001__ - can't find online manual - </br>
 __3kW Dynamic Braking Resistor__ - [instruction manual](https://drive.google.com/file/d/1u_LV9H5tyxtQRk8UA6zT45W3fTitwZu3/view?usp=sharing)</br>
 __Anemometer__ </br>
@@ Line 31: / Line 31: @@
 ## Anemometer - wind speed measuring
-[[File:Porch-anemometer.jpg|border|thumb|Anemometer data logger prototype on porch]]
+[[File:Anemometer-roof.jpeg|400px]]
 We are using a Vortex wind sensor. One revolution per second equals 2.5 mph. Since our anemometer has a relay (a mechanical switch), it creates a _switch bounce_. Therefore, we need a debounce circuit. Please refer to [[Electrical Control Unit]] for the repository and more information.
 # Research and background knowledge
 ## Research papers, articles, media

@@ Line 1: / Line 1: @@
 # Current System
@@ Line 114: / Line 127: @@
 - integral length scale; from time series, we compute the auto-correlation function
 - turbulence spectra
-- averaging periods of 10 min are commonly used; 30 min period for turbulence studies; the larger integral time scale, the larger should be averaging period; sampling frequencies should be much smaller than integral time scale
+- averaging periods of 10 min are commonly used; 30 min period for turbulence studies; the larger integral time scale, the larger should be averaging period; sampling frequencies should be much smaller than the integral time scale
-- you have to detrend te time series to get rid of high-frequency fluctuation
+- you have to detrend the time series to get rid of high-frequency fluctuation

← Older revision		Revision as of 18:56, 1 November 2020
Line 1:		Line 1:
		+
		+	# Current System
		+
		+	[[File:Wind-turbine-system-diagram-v1.png\|850px]]
		+
		+	[view and comment on system diagram](https://whimsical.com/RTwJtGcE62ijqnrpdg2m85)
		+
		+	## Equipment manuals
		+
		+	__Aurora 3kW inverter__ - [data sheet](https://drive.google.com/file/d/1b_QylTKJzde8saR7A5cHfEcUz2PQZ7JJ/view?usp=sharing)</br>
		+	__Aurora wind interface box/rectifier__ - [manual](https://drive.google.com/file/d/1YciYcLJHPdqsU5kGbLKZFx5bYpHzk-JD/view?usp=sharing)</br>
		+	__TCMG-3kW Taechang N.E.T. Generator__ - [online specs](https://tcnet.en.ec21.com/3kW_Small_Wind_Turbine--1105310_1105312.html)</br>
		+	__3kW Discharger Breaker__ - </br>
		+	__3kW Dynamic Braking Resistor__ - [instruction manual](https://drive.google.com/file/d/1u_LV9H5tyxtQRk8UA6zT45W3fTitwZu3/view?usp=sharing)</br>
		+	__Anemometer__ </br>
		+	__Wind direction meter__ </br>
		+
	## Anemometer - wind speed measuring		## Anemometer - wind speed measuring