tag:blogger.com,1999:blog-40758858290264560582024-03-12T18:42:35.722-07:00Grhys LightningAnonymoushttp://www.blogger.com/profile/17665586867246056475noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-4075885829026456058.post-2033899974358854042014-09-07T19:14:00.000-07:002014-09-28T13:39:47.374-07:00Wind Turbine Project<span style="color: #cccccc; font-size: large;">4/08</span><br />
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<span style="color: #cccccc;"># Wild and variable frequency AC can be generated. How is this rectified?</span><br />
<span style="color: #cccccc;"># Do we need a wind vane? No it is included</span><br />
<span style="color: #cccccc;"># What is Furling? Furling is passive protection for the turbine in which the rotor folds up or around the tail vane</span><br />
<span style="color: #cccccc;"># Are we close to Betz Law limit? (59.3%) NO</span><br />
<span style="color: #cccccc;"># Will intermittent wind be a problem? No, because of the rectifier, wind speed should not be an issue</span><br />
<span style="color: #cccccc;"># What can our peak power be? 300W, 500W</span><br />
<span style="color: #cccccc;"># What is our start up wind speed? 2.5m/s</span><br />
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<span style="color: #cccccc;">Visited Jaycar Catalogue to check specifications of turbine</span><br />
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<span style="color: #cccccc; font-size: large;">5/08</span><br />
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<span style="color: #cccccc;"># Wild AC: <strong>w</strong><strong>ild AC can be sorted by an inverter</strong> > Can we use the inverter on the wall in VS116 to solve this or do we need to get a dedicated inverter from Jaycar?</span><br />
<span style="color: #cccccc;"># Will we need to make a rectifier to add to inverter circuit? <strong>Yes, a 3 phase rectifier is needed</strong></span><br />
<span style="color: #cccccc;"># Turbines: Grey has tapered white fibreglass blades, black has white metal aerofoils with red tips, white has cream fibreglass aerofoils</span><br />
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<span style="color: #cccccc;"># TESTING:</span></div>
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<strong><span style="color: #cccccc;">WHITE TURBINE</span></strong></div>
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<span style="color: #cccccc;">Resistance</span></div>
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<span style="color: #cccccc;">1 - 2 = 1.6 ohms</span></div>
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<span style="color: #cccccc;">2 - 3 = 1.2 ohms</span></div>
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<span style="color: #cccccc;">1 - 3 = 2.0 ohms</span></div>
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<span style="color: #cccccc;">Insulation</span></div>
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<span style="color: #cccccc;">1 - Frame = >200Mohms</span></div>
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<span style="color: #cccccc;">2 - Frame = >200Mohms</span></div>
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<span style="color: #cccccc;">3 - Frame = >200Mohms</span></div>
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<strong><span style="color: #cccccc;">GREY TURBINE</span></strong></div>
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<span style="color: #cccccc;">Resistance</span></div>
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<span style="color: #cccccc;">1 - 2 = 360 ohms</span></div>
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<span style="color: #cccccc;">2 - 3 = 185 ohms</span></div>
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<span style="color: #cccccc;">1 - 3 = 8.1 ohms</span></div>
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<span style="color: #cccccc;">Insulation</span></div>
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<span style="color: #cccccc;">1 - Frame = >200Mohms</span></div>
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<span style="color: #cccccc;">2 - Frame = >200Mohms</span></div>
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<span style="color: #cccccc;">3 - Frame = >200Mohms</span></div>
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<strong><span style="color: #cccccc;">BLACK TURBINE</span></strong></div>
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<span style="color: #cccccc;">Resistance</span></div>
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<span style="color: #cccccc;">P - N = 45.5 ohms</span></div>
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<span style="color: #cccccc;">Insulation</span></div>
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<span style="color: #cccccc;">P - Frame = >200Mohms</span></div>
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<span style="color: #cccccc;">N - Frame = >200Mohms</span></div>
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<span style="color: #cccccc;"># The black turbine was mounted successfully on tower attached to VS116 (without wind vane)</span><br />
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<span style="color: #cccccc; font-size: large;">11/08</span><br />
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<span style="color: #cccccc;"># Drilled hole in deck</span><br />
<span style="color: #cccccc;"># Ran the cable through the hole and into the classroom</span><br />
<span style="color: #cccccc;"># Attached wind vane</span><br />
<span style="color: #cccccc;"># Planned required resources - batteries, rectifier, inverter (if running direct to grid, but not if running petrol battery)</span><br />
<span style="color: #cccccc;"># Tested VS116 mounted turbine output with 230V lamp - Peaked at 15V, 10V average</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPIRFRvyNCPivPpYA-4z1_qO4W8ETQ730SBJGDzrfNRbgdpaqPStbkdyIxIuR3jubl7AAbEutrtpiCUtd3S4MLfd1X1d9D9gfmNDCHUQexlClcjlhYovSGM_Y2u-Na_-iMTjWbHb6OFjRx/s1600/WIN_20140810_141619.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="color: #cccccc;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPIRFRvyNCPivPpYA-4z1_qO4W8ETQ730SBJGDzrfNRbgdpaqPStbkdyIxIuR3jubl7AAbEutrtpiCUtd3S4MLfd1X1d9D9gfmNDCHUQexlClcjlhYovSGM_Y2u-Na_-iMTjWbHb6OFjRx/s1600/WIN_20140810_141619.JPG" height="180" width="320" /></span></a></div>
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<strong><span style="color: #cccccc;">Plan:</span></strong></div>
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<strong><span style="color: #cccccc;">12VDC Turbine > Car battery > Inverter > 230VAC out (winner)</span></strong></div>
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<strong><span style="color: #cccccc;">or</span></strong></div>
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<strong><span style="color: #cccccc;">12VDC Turbine > Car battery > Run petrol engine</span></strong></div>
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<span style="color: #cccccc; font-size: large;">12/08</span><br />
<span style="color: #cccccc;"></span><br />
<span style="color: #cccccc;"># Installed blades on remaining two turbines</span><br />
<span style="color: #cccccc;"># Had issues with output of white turbine; all 3 outputs jumped from negative to positive values, on DC and AC on multimeter. Oscilloscope was not clear with results</span><br />
<span style="color: #cccccc;"># Possibly using an analogue metre to test white turbine could give a more accurate reading if it is also connected in STAR or DELTA</span><br />
<span style="color: #cccccc;"># Grey turbine had steady output on multimeter reading AC volts</span><br />
<span style="color: #cccccc;"># Grey turbine is suspected STAR with neutral, at connector point internally</span><br />
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<span style="color: #cccccc;"># BLADE TIP TO TIP DIAMETERS / POLE DIAMETERS</span><br />
<span style="color: #cccccc;">White Turbine - 1.8m / 52mm</span><br />
<span style="color: #cccccc;">Grey Turbine - 1.6m / 40mm</span><br />
<span style="color: #cccccc;"></span><br />
<span style="color: #cccccc;"># Can we run a pole up the side of the classroom and mount the grey turbine like the black turbine? No, decided that fence pole mount would be best</span><br />
<span style="color: #cccccc;"># Distance from ground to classroom roof apex - 4.6m</span><br />
<span style="color: #cccccc;"># 1m ground depth needed for the pole to be mounted stably</span><br />
<span style="color: #cccccc;"># With the poles we have there would not be enough length for the turbine blades to clear the roof</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjOabPx-cOLv95I5hTeJpv-m453OdJdmFo4gVC8SwKv5moG2KUvRlAPLhHfAODBcfAySa6clr4aycsfDM1PHLiXuh8E7K591A9W0Yr4yiJE2JTyDNIOz-xcdGJuS2I2vRijDyVIPTEdSaQ8/s1600/WIN_20140811_102337.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="color: #cccccc;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjOabPx-cOLv95I5hTeJpv-m453OdJdmFo4gVC8SwKv5moG2KUvRlAPLhHfAODBcfAySa6clr4aycsfDM1PHLiXuh8E7K591A9W0Yr4yiJE2JTyDNIOz-xcdGJuS2I2vRijDyVIPTEdSaQ8/s1600/WIN_20140811_102337.JPG" height="180" width="320" /></span></a></div>
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<span style="color: #cccccc; font-size: large;">17/08</span><br />
<span style="color: #cccccc;"></span><br />
<span style="color: #cccccc;"># We decided to mount the pole for the turbine to a fence post on the border of CPIT</span><br />
<span style="color: #cccccc;"># The cable trench was dug and prepared</span><br />
<span style="color: #cccccc;"># The cable was laid and the trench filled</span><br />
<span style="color: #cccccc;"># The mounting pole was ready to put up</span><br />
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<span style="color: #cccccc; font-size: large;">18/08</span><br />
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<span style="color: #cccccc;"># The grey turbine was mounted</span><br />
<span style="color: #cccccc;"># Rectifier assembled and tested successfully</span><br />
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<span style="color: #cccccc;"> </span><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCEa4DQwhqraRu47NFFAbREyClqrp0qKW3EluSqiWp5fa-yCcYz7pySfRcO0-EQFZQm3RvJ5L-9mdTmGg-ju8gsaxE3UEDJAuJdPICrRJs5MVYWdGzBZw16vUAskZrbuhv9hadsTiPpMKP/s1600/WIN_20140908_134134.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCEa4DQwhqraRu47NFFAbREyClqrp0qKW3EluSqiWp5fa-yCcYz7pySfRcO0-EQFZQm3RvJ5L-9mdTmGg-ju8gsaxE3UEDJAuJdPICrRJs5MVYWdGzBZw16vUAskZrbuhv9hadsTiPpMKP/s1600/WIN_20140908_134134.JPG" height="180" width="320" /></a></div>
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<span style="color: #cccccc; font-size: large;">20/08</span><br />
<span style="color: #cccccc;"></span><br />
<span style="color: #cccccc;"># Grey turbine wind vane not very effective, also blades not spinning very well</span><br />
<span style="color: #cccccc;"># Added nosecone and made up a wind vane (from sheets of tin) with a larger surface area</span><br />
<span style="color: #cccccc;"># Tin wind vane created some resolution to the ease of rotation problem. Rotor still needs a higher starting wind speed than the black turbine to start rotating</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5MYkVsICotDtuWBm6WWL60jen8qnM-QA1hyphenhyphenRklD-OodgIAux8u71GSdyAdtd_LmbCi04zGaadiSHXOt3YUuhYxsUOWxeCgWh5d-CCp8z6pzeDgWnavXvD6o_m_gwCE8MQt9FzMenSeWdi/s1600/WIN_20140819_142613.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="color: #cccccc;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5MYkVsICotDtuWBm6WWL60jen8qnM-QA1hyphenhyphenRklD-OodgIAux8u71GSdyAdtd_LmbCi04zGaadiSHXOt3YUuhYxsUOWxeCgWh5d-CCp8z6pzeDgWnavXvD6o_m_gwCE8MQt9FzMenSeWdi/s1600/WIN_20140819_142613.JPG" height="180" width="320" /></span></a></div>
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<span style="color: #cccccc; font-size: large;">10/09</span><br />
<span style="color: #cccccc;"></span><br />
<span style="color: #cccccc;"># Created second trench for third turbine</span><br />
<span style="color: #cccccc;"># Cable threaded through turbine mount</span><br />
<span style="color: #cccccc;"># Cable measured, prepared and laid in trench</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEglJm-ClmEhe5ycBZ1uUoa_ukUu8PSSf-pARTSCnqfseu1w7hgYG-HVyj9y30RohoxYtfKc4w8Rm0ae13URimFV-1Ivv_V7ZJ_RX6FEIe0tsZQs7S4_RdgRFnsiPfF0HEMuKljATk_oQXxl/s1600/WIN_20140909_134434.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEglJm-ClmEhe5ycBZ1uUoa_ukUu8PSSf-pARTSCnqfseu1w7hgYG-HVyj9y30RohoxYtfKc4w8Rm0ae13URimFV-1Ivv_V7ZJ_RX6FEIe0tsZQs7S4_RdgRFnsiPfF0HEMuKljATk_oQXxl/s1600/WIN_20140909_134434.JPG" height="180" width="320" /></a></div>
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<span style="color: #cccccc; font-size: large;">15/09</span><br />
<span style="color: #cccccc; font-size: large;"></span><br />
<span style="color: #cccccc;"># Started modification to third turbine so that preconstructed tail mount could be attatched</span><br />
<span style="color: #cccccc;"># Using a hacksaw, we modified the tail so that it would be as flush as possible with the turbine</span><br />
<span style="color: #cccccc;"># Fabricated wind vane out of sheet metal</span><br />
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<span style="color: #cccccc; font-size: large;">23/09</span><br />
<span style="color: #cccccc;"># Third turbine mounted and attached</span><br />
<span style="color: #cccccc;"># Assembled final rectifier for turbine and linked it to the phase and nuetral bar to feed the grid</span><br />
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<span style="color: #cccccc;"><span id="goog_489525572"></span><a href="https://www.blogger.com/"></a><span id="goog_489525573"></span></span><br />Anonymoushttp://www.blogger.com/profile/17665586867246056475noreply@blogger.com0tag:blogger.com,1999:blog-4075885829026456058.post-24060389203695436952014-07-27T19:13:00.005-07:002014-07-27T19:13:57.813-07:00Why Do We Solder?<div class="separator" style="clear: both; text-align: center;">
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<br />Anonymoushttp://www.blogger.com/profile/17665586867246056475noreply@blogger.com0tag:blogger.com,1999:blog-4075885829026456058.post-30448547266686318842014-07-27T19:13:00.002-07:002014-07-27T19:13:27.251-07:00Power<div class="separator" style="clear: both; text-align: center;">
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<br />Anonymoushttp://www.blogger.com/profile/17665586867246056475noreply@blogger.com0tag:blogger.com,1999:blog-4075885829026456058.post-68231896762028198992014-07-27T19:12:00.000-07:002014-07-27T19:12:39.373-07:00Electromagnetism<div class="separator" style="clear: both; text-align: center;">
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<br />Anonymoushttp://www.blogger.com/profile/17665586867246056475noreply@blogger.com0tag:blogger.com,1999:blog-4075885829026456058.post-45783968255018040412014-07-27T19:01:00.000-07:002014-07-27T19:01:11.474-07:00Circuit Breakers<div class="separator" style="clear: both; text-align: center;">
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<br />Anonymoushttp://www.blogger.com/profile/17665586867246056475noreply@blogger.com0tag:blogger.com,1999:blog-4075885829026456058.post-84987880750341346222014-07-23T16:39:00.001-07:002014-07-23T16:39:36.272-07:00EMF Production<div class="separator" style="clear: both; text-align: center;">
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<br />Anonymoushttp://www.blogger.com/profile/17665586867246056475noreply@blogger.com0tag:blogger.com,1999:blog-4075885829026456058.post-33390031768357411942014-07-20T19:43:00.003-07:002014-07-20T19:43:43.074-07:00The Great New Zealand Stocktake<div class="separator" style="clear: both; text-align: center;">
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