Electronic Circuits Projects Diagrams Free - Renewable Energy http://www.electro-tech-online.com/ Discussion of Solar, Wind, Hydro and main stream renewable energy topics including RE projects. en Sat, 21 Nov 2009 06:29:31 GMT vBulletin 60 http://static.electro-tech-online.com/images/misc/rss.jpg Electronic Circuits Projects Diagrams Free - Renewable Energy http://www.electro-tech-online.com/ TI Renewable Energy Kit http://www.electro-tech-online.com/renewable-energy/99990-ti-renewable-energy-kit.html Fri, 13 Nov 2009 08:01:08 GMT I've just purchased this kit, and I am wondering if anyone else has experience with it? I know there has been a lot of talk here about grid-tie inverters. I am planning to scale the board for a 10kw design, 3 phase.

C2000 Renewable Energy Developer's Kit - TMDSENRGYKIT - TI Tool Folder ]]> Renewable Energy opeleg http://www.electro-tech-online.com/renewable-energy/99990-ti-renewable-energy-kit.html Magnetic Fields - Permanent Magnet Generator http://www.electro-tech-online.com/renewable-energy/99785-magnetic-fields-permanent-magnet-generator.html Sun, 08 Nov 2009 15:13:05 GMT I've got this idea in my head...:o Generate power using permanent magnets. "Waterwheel", exept you use magnets. Very simple, will finish diagram depends what you guys think...

Please let me know what you think and if it can work or not. If not, why not..

Regards
Lee ]]> Renewable Energy lmeissen http://www.electro-tech-online.com/renewable-energy/99785-magnetic-fields-permanent-magnet-generator.html solar panel current problem http://www.electro-tech-online.com/renewable-energy/99686-solar-panel-current-problem.html Thu, 05 Nov 2009 19:16:27 GMT i connected 2 solar panel of 130 watts in parellel. single solar panel should give 8.2 ampere so connected parellel that must give atleast 16 ampere.... i connected 2 solar panel of 130 watts in parellel. single solar panel should give 8.2 ampere so connected parellel that must give atleast 16 ampere. but it gie only 7.9 ampere ie 4.2 amp & 4.5 amp from ist and 2nd cell if measure individually. also when i connect load i.e 145 AH battery very close to parellel connected solars then all thing alright give 16 amp. is it line or distance or cable loss? if yes then how can i solve my problem ]]> Renewable Energy electrominds http://www.electro-tech-online.com/renewable-energy/99686-solar-panel-current-problem.html Li-ion battery pack powered by solar cell http://www.electro-tech-online.com/renewable-energy/99546-li-ion-battery-pack-powered-solar-cell.html Mon, 02 Nov 2009 23:12:23 GMT Hi guys, I am trying to build a system by which an 18v. 10w. solar panel charges a 3.7v 6600maH Li-ion battery pack, this one to be exact: - ... Hi guys, I am trying to build a system by which an 18v. 10w. solar panel charges a 3.7v 6600maH Li-ion battery pack, this one to be exact: -

http://www.tenergybattery.com/index....d=123&Itemid=1

I have experimented (using my mobile phone) with connecting up a regular car mobile phone charger (converting 18v panel input into ~ 5.5v output ) with some success. However, I am concerned that connecting this directly to my tenergy battery pack will cause problems as I know that li-ion batteries are easy to destroy without the correct protection circuits.

The information with the tenergy battery states that the protection for overcharge/discharge is built in to the pack but the webpage also seems to imply that protection circuits such as

Rechargeable Batteries & Battery Chargers - Protection circuit Module ( PCB ) for 3.7V Li-Polymer Battery (8.5A limit)-PCB1S

and

http://www.tenergybattery.com/index....mart&Itemid=27

are required??? What do you guys think of all of this?? Can I just whack my solar panel output onto the battery terminals via my mobile phone car charger or am I missing something???

Also, I have noticed whilst trying to charge my phone with the solar panel that it works perfectly, but when the power goes off for whatever reason (eg sun going behind a cloud) the phone doesnt start charging again when the sun reappears.. is this some kind of protection built into the mobile phone charger??????????

I am a bit of an electronics noob so I would be most grateful for any help as I am finding very little useful info in google searches and tenergy and the battery websites dont reply to queries...

Thanks in advance :) ]]> Renewable Energy stingr4y http://www.electro-tech-online.com/renewable-energy/99546-li-ion-battery-pack-powered-solar-cell.html solar hot water http://www.electro-tech-online.com/renewable-energy/99515-solar-hot-water.html Mon, 02 Nov 2009 11:25:11 GMT I'm thinking of using a solar hot water system as a pre heater for an existing electric storage system. Sort of a half way step . Any problems with doing this? ]]> Renewable Energy Ross Craney http://www.electro-tech-online.com/renewable-energy/99515-solar-hot-water.html 12V car alternator charging a 12V lead acid battery http://www.electro-tech-online.com/renewable-energy/99494-12v-car-alternator-charging-12v-lead-acid-battery.html Sun, 01 Nov 2009 20:24:21 GMT 12V car alternator *charging *a 12V lead acid battery....... I want to cut down...]]> Does anyone have a circuit diagram for a charging circuit--->

12V car alternator charging a 12V lead acid battery.......

I want to cut down the electricity bill:D
The charging circuit will be connected to an inverter that gives an output of 240V AC. ]]> Renewable Energy fantabulous68 http://www.electro-tech-online.com/renewable-energy/99494-12v-car-alternator-charging-12v-lead-acid-battery.html 4kw Motor Conversion http://www.electro-tech-online.com/renewable-energy/99452-4kw-motor-conversion.html Sat, 31 Oct 2009 09:08:58 GMT G'day Guys,
Well I scored a nice 4kw motor perfect for a motor conversion yesterday at work for free. The motor was stuffed as moisture got in so I'm currently in the process of ripping out the wire and I'll do a total re-wire using thicker wire and so it's suits my 24 volt array.

Attachment 34899

The wire in it presently is 0.8mm and I will going for thicker wire hopefully 1.2mm but it will depend on how many turns I'll need in each slot. I'll make a new solid steel rotor to hold 60 off 1"x1/2" neo magnets with 15 in each pole. The conversion will have 12 wires coming out so that will give plenty of wiring options.

I'll upload pic's as I go on this conversion to provide a good guide on converting a 3 phase motor to a wind generator.
1 delta
1 star
2 delta
2 star

So depending on the conditions it will be easy to change the wiring setup to get the optimum configuration. I reckon 3 metre blades will be perfect for this so now the hunt is on to find some nice straight grain oregon wood for them.

Cheers Bryan
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]]> Renewable Energy bryan1 http://www.electro-tech-online.com/renewable-energy/99452-4kw-motor-conversion.html Solar power inverter http://www.electro-tech-online.com/renewable-energy/99444-solar-power-inverter.html Sat, 31 Oct 2009 04:51:46 GMT Hi, I am new to this forum .For my project i am planning to do a solar power inverter using micro controllers.When i researched i found that... Hi,
I am new to this forum .For my project i am planning to do a solar power inverter using micro controllers.When i researched i found that there are less Indian manufactures for this particular module.I want to know why indian manufactures are less and i need more details about it.I would be more useful any links ,references books,pdf. ]]> Renewable Energy raminaannhoover http://www.electro-tech-online.com/renewable-energy/99444-solar-power-inverter.html A Battery Primer Thread http://www.electro-tech-online.com/renewable-energy/99384-battery-primer-thread.html Thu, 29 Oct 2009 10:41:24 GMT Hi Guys, Recently I asked Frank (#supertech) who is a new member to our group to write a primer on the use of batteries in RE. This... Hi Guys,
Recently I asked Frank (#supertech) who is a new member to our group to write a primer on the use of batteries in RE. This thread can kick the conversation off and other members feel free to add input as the end goal is condensing the valuable information into a sticky to sit up with the other 2 sticky's.

Some initial suggestions

  1. The reasons not to use automotive batteries in RE as a power source
  2. The different types of RE batteries and the pro's and con's of each type
  3. The best charging solutions for each battery type and links to battery data files.
  4. Battery Desulphators myth or do they work
  5. The best way to hook RE batteries up for different voltages for the optimum charging solution.
Just a few thoughts to give this thread some discussion points.

Regards Bryan ]]> Renewable Energy bryan1 http://www.electro-tech-online.com/renewable-energy/99384-battery-primer-thread.html