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Forum Index : Windmills : MY TURBINE FROM GROUND UP>
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shawn Senior Member  Joined: 30/03/2010 Location: New ZealandPosts: 210 |
very impresive tower wish i had one.  |
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AMACK Senior Member Joined: 31/05/2009 Location: AustraliaPosts: 184 |
Hi All, Sorry for the poor quality of the photos. I will take a few more when the weather is better. I would also like to do a post on cable splicing if anyone in intrested. It will be on the diffrent ways you can connect ccables up. I would also like other to post any experiance with cables that they have.. There are aot of nice turbines out there and I have had a lot come to ground from trying to rush the job. My advice is to take your time and set it up right the first time. This includes the tower and the cables holding it in place. This tower is not meant to come down either way, the tubine service can be done from the ring at the top and I hope the wind blows the turbine and not the tower over. P.S Since I put the tower up the wind has stopped and will it will be like that for a week ( Murphy's Law ) 
AMACK *Note to self 1. Make it thick 2.Make it heavy. 3.Make it stronger than it should be. 4. Don't rush the first job as the second job will cost more and take mor |
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Downwind Guru  Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
Another thing on cable clamps worth noteing, is most have a twist patten casted into the saddle where it fits up against the wire rope. The saddle should be placed onto the U-bolt so the casted twist matches the twist in the wire rope. Im not sure if the smaller cheap clamps have the saddles made this way but the bigger size ones do, and it pays to check. Pete. Sometimes it just works |
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| AMACK Senior Member Joined: 31/05/2009 Location: AustraliaPosts: 184 |
Hay Pete, I know you have worked with alot a cable's would you like to give me a hand to put up a post on the right and wrong's of cables? There are a few that have asked and I think it is a good topic. I have done a few phots today of a BUSH splice but there are a few more then them too so I have found out. I could get an old earthmover that I know to do a splice were they feed all the cable lines back into the cable. I can not do it my self but he is good to watch, and I don't think he would mind to do it if I took a few photos of it. AMACK *Note to self 1. Make it thick 2.Make it heavy. 3.Make it stronger than it should be. 4. Don't rush the first job as the second job will cost more and take mor |
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| AMACK Senior Member Joined: 31/05/2009 Location: AustraliaPosts: 184 |
NEED A LITTLE HELP. I am trying to workout how many pulses there are per turn of the motor so I can calabrate the data logger. Can or does someone have a system for working out a 51 pole 46 magnet motor. I know the F&P's pulse 14 pules per turn but I do not know how many times this one does. I thought I had it but didn't, if a F&P has 56 mags and 42 poles i worked on 56-42= 14 Har  wrong. As the motor I have is 46 mags and 51 poles it worked out to -5 ?
Can some one give me an idear?? AMACK *Note to self 1. Make it thick 2.Make it heavy. 3.Make it stronger than it should be. 4. Don't rush the first job as the second job will cost more and take mor |
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| Downwind Guru Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
Try 17 as its 51/3 = 17 (F&P 42/3 = 14) I dont know if this is right but i would start there till someone can spin it up in a lathe and record the pulse rate to rpm. Pete. Sometimes it just works |
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5124 |
Try 23. The piclog says to use 14 for a F&P, but I think thats wrong. If there are 56 magents, then 28 N's and 28 S's pass a phase per revolution. As the PicLog AC input is using a half wave rectifier, it will only read half the magnet pulses, therefore 28 pulses per revolution. I think thats right, and dont know where I got the 14 from? For your motor windmill, if there are 46 magnets, then in theory the picaxe should see 23 pulses per revolution. So 23 should be the number you need to enter. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| AMACK Senior Member Joined: 31/05/2009 Location: AustraliaPosts: 184 |
Thanks, I thought there would be someone out there that had the answer. Thanks By the way I got over 22.8 amp at 24.2 volt last night out of the turbine in light winds. Like I said there will be no wind now, today is as still as. Even with the turbine just turning over and the voltage doubler on it was still putting out a bit. When I could get the logger to read( Just a few wireless trubles not the logger) it was quite happy running at an average for most of the night at over 300 watts. I am yet to put up the anometer to get wind speed but I will start to sent data to the site sometime this week. The data may be a bit broken as MY NEW FANCY laptop has a hissy fit with the nine pin to USB adapter so I have to use the wifes little toy one. ( Yes a $400 laptop runs rings around a $2,500 laptop) So when she needs her laptop it may go down for a bit. I need to look at getting a laptop to run the solar and other systems. Glen and Pete I am useing Gordons logger program and the calabrations are diffrent to Glens logger set up. I have both programs,Should I use this to collect data or Glens? AMACK *Note to self 1. Make it thick 2.Make it heavy. 3.Make it stronger than it should be. 4. Don't rush the first job as the second job will cost more and take mor |
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| Downwind Guru Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
Just a note on what Glenn quoted above. In the power logger program the rpm is recorded over a 500mS period and not a full second (1000mS) so the factor will be half the 28 meaning 14 as a factor for a F&P is correct. It will be the same situation for the Chinese mill, and the factor will be half of what the pulses per second are. Pete. Sometimes it just works |
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fillm Guru Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Hi Amac , Good to see it all up and running , 500w in what you call light breeze sounds like its all going very well  .
Also having the benift of the low wind performance with the Cap / Dblr should give you some power in under 9klm , as you are seeing today . From memory on mine the set for RPMs was around .12 , Gordons logging software measures over .5 sec not 1 sec . The best way is to just have the cal screen up in light winds like you have today and watch when current just starts ( Cut-in ) and play around with the set point untill you get it at 160 ~ 180 Rpm for Cut-in as the doubler starts to work , if you put a switch in to turn the Cp / Dblr of then turn it of and you should see cut-in at 340Rpm then . As I deleted all my old logging programs and I have mine in the shed for mods , I was going to re-boot with a new program when it goes back up and re calibrate it then as I have described PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
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| Gizmo Admin Group Joined: 05/06/2004 Location: AustraliaPosts: 5124 |
are you telling me we have piclog picaxes out there using a 500ms RPM interval? The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| Downwind Guru Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
Hi Glenn, In my program i read the pulse count for 500mS [code] count 3,500, rpm [/code] If a full second is used in program than this restricts the logging rate to over 1 second, so for test purposes where a 1 second logging rate is desired it is more practical to do a 500mS pulse count on the rpm so all readings can be done under 1 second and sent out to the pc. So yes there is piclog picaxes out there using 500 mS interval counts. Pete. Sometimes it just works |
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| Gizmo Admin Group Joined: 05/06/2004 Location: AustraliaPosts: 5124 |
I wish I knew that yesterday. I've just added instructions to the new PicLog calibration screen to work out the RPM multiplier, but of course its only valid for a 1 second timing interval. The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| Downwind Guru Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
Sorry mate, Murphy's law. 
I seen no point in slowing the operation down for a full second duration when a 1/2 second was more than ample to get an accurate reading. I also do a pulsin command before the rpm count, so as to have the rpm count start at the same point in the wave each time. This gave a higher consistant accuracy, more so at low rpm when the pulse width is large. Pete. Sometimes it just works |
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| Gizmo Admin Group Joined: 05/06/2004 Location: AustraliaPosts: 5124 |
I'll leave it as is for the PicLog, keep it consistant and backward compatible. Should probably start a new thread for this anyway. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| AMACK Senior Member Joined: 31/05/2009 Location: AustraliaPosts: 184 |
Hi ALl, The wind is back but not what it has been like for the past few weeks. I went out to the shed to have a look before work. I am running the turbine into a PL40 to have a look at the out put. The voltage was at 25.8 volt and the input from the turbine was steady at 28.8 amp(740 amp) and hit 33.4 (860 amp) for a few secs before it flured out. I think with a little more weight on the tail it would be nice. It looks as if it will go alot faster and put out more then it has will a few tinkers and a tweek. I think it would get to 40-45 amp, but I am not going to push it as I want it to stay on the pole. I would rather it flurs early then throw it's self to the ground. There is going to be more wind tonight, I am going to get the logger running to do a test run and plot it for a good windy night. Amack *Note to self 1. Make it thick 2.Make it heavy. 3.Make it stronger than it should be. 4. Don't rush the first job as the second job will cost more and take mor |
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| fillm Guru Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Hi Amac , Sounds like it is doing very well , 740 ~ 860 (Watts I think you mean)so far is very good , as I said it easily out perform one of my F&P duals , I would recomend to just leave the furl point as it is with these blades as they can still go higher even as they start to furl, and with the wind you get there and the height you have it at I am sure you are going to see it easily push through the 1kW and still have good protection . Do You have any daily " Watt Hrs " figures as yet . PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
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| AMACK Senior Member Joined: 31/05/2009 Location: AustraliaPosts: 184 |
Ops Sorry about the AMP and WATTS.
(( The voltage was at 25.8 volt and the input from the turbine was steady at 28.8 amp(740 amp) and hit 33.4 (860 amp) for a few secs before it flured out. ))
SORRY it should read 740 WATTS not AMPS and 860 watts not 860 amps.
On a lighter note I went out last night at 11 pm to look at how many AMP/HR the turbine had but out and it read on the (PL40) 172 amp/hrs. I am not sure the correct way to brake it down to kw/hrs but I think it is devided by 40 ? If that is the case it is 172/40 = 4.3 in 11 hours of running. We had some good wind in the afternoon but it dropped off before night. I am very happy with what it is putting out and now in need of a dump load to get rid of some power( What a waste) I am not going to waste it I might get a 300watt grid tie invertor and use that as a dump. P.S Thanks Pete and Phill for pointing out the watts stuff up. I could not edit the post to correct it. AMACK *Note to self 1. Make it thick 2.Make it heavy. 3.Make it stronger than it should be. 4. Don't rush the first job as the second job will cost more and take mor |
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JimBo911 Senior Member Joined: 26/03/2009 Location: United StatesPosts: 262 |
Mack Very nice work. It feels great when things fall in place doesn't it?. I would have to agree with Phill your going to get more grunt out of this little sweetheart. Job well done. Jim |
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| VK4AYQ Guru Joined: 02/12/2009 Location: AustraliaPosts: 2539 |
Hi Andrew On those figures I would suggest a 600 watt GTI and a 300 14 volt one on a second set of rectifiers to pick up the early output, mine works well as they have a MPPT in them and an over voltage cutout at 30 volts so it picks up the slow speed power and draws a maximum of 12 amps, cut in at 12 volt AC, I use a 22000uf cap to get it to sync better as it holds in instead of dropping out so much. When it gets to battery charge voltage it still is working, and on my mill I can still get 30 amps at 28 volt into the batteries, Have a look at the Dual voltage entry I made to see the wind charts, its now 7 days working and has put an extra 10kw back into the grid. Not a lot but it all helps. All the best Bob Foolin Around |
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