All About Circuits Forum  

Go Back   All About Circuits Forum > Electronics Forums > The Projects Forum

Notices

The Projects Forum Working on an electronics project and would like some suggestions, help or critiques? If you would like to comment or assist others with their projects, this is the place to do it.

Reply   Post New Thread
 
Thread Tools Display Modes
  #1  
Old 03-13-2012, 03:24 PM
Slammer Slammer is offline
New Member
 
Join Date: Mar 2012
Posts: 2
Default Wind Project

What I have is a prebuilt Wind Generator, and my own home made wind generator. The prebuilt one is supposed to be capable of generating 300Watts. The one i built consists of a 90V 1725RPM DC motor. The prebuilt one has no brushes so I can leave it hooked to the batteries all the time. The one I built needs a blocking diode, or rectifier so my batteries dont feed voltage back to the motor, and drain them. My question is, I have both of these units spinning pretty much non stop, upwards of 306RPM at any given time. I am seeing voltage from them, but never any amps. From either unit. So I'm wondering where the amps are going? Can anyone help me?
Thank you in advance
Reply With Quote
  #2  
Old 03-13-2012, 03:31 PM
wayneh wayneh is offline
Senior Member
 
Join Date: Sep 2010
Location: Roscoe, IL
Posts: 7,508
Default

Welcome to the forums.

You haven't said anything about how the generators are loaded. With no load, you'll see the maximum voltage but they won't be generating any power (voltage x current). When loaded, the voltage will drop but current will flow.

You mentioned batteries, which are a type of load. If the battery is charging, that's where your current is going. What makes you think there is no current flowing?

Your permanent magnet alternator probably contains a built-in rectifier, and that's why it doesn't need an additional blocking diode.
Reply With Quote
  #3  
Old 03-13-2012, 03:38 PM
Slammer Slammer is offline
New Member
 
Join Date: Mar 2012
Posts: 2
Default

The main reason Im thinking I dont see any amps is because I have the positive wire of each one running through an ammeter, then I have them combined to a circuit breaker, then straight to the batteries. The voltage of the batteries doesn't change at all when they are both running. The batteries are my load.
Reply With Quote
  #4  
Old 03-13-2012, 05:33 PM
wayneh wayneh is offline
Senior Member
 
Join Date: Sep 2010
Location: Roscoe, IL
Posts: 7,508
Default

A diagram would be helpful at this point. If you're placing the generators in parallel without a controller, bad things could be happening - power from one generator being forced into the other. Just putting them in series might not solve your problem either, though, so I'd recommend coming back with a diagram before you risk something.

Your general problem is "OR"ing power sources, and this plagues every corner of the energy-generation world. Lots of folks want to run wind and solar together, for instance. So your problem has been solved many times at many different scales. The best solution for YOU will depend on the details of your setup. The more detail you can put into your diagram, the better help you'll get from the pros here. I'm not one of them, but I do know what information is needed to reach a solution.
Reply With Quote
Reply   Post New Thread

Tags
, , , ,


Related Site Pages
Section Title
Worksheet Regulated power sources
Worksheet Basic AC-DC power supplies
Worksheet Rectifier circuits
Worksheet DC motor theory
Worksheet DC generator theory
Textbook Special transformers and applications : Transformers
Textbook Vacuum tube audio amplifier : Discrete Semiconductor Circuits
Textbook Rectifier/filter circuit : Discrete Semiconductor Circuits
Textbook Automotive alternator : Ac Circuits
Textbook Rectifier circuits : Diodes And Rectifiers


Similar Threads
Thread Thread Starter Forum Replies Last Post
Project: PIC based Scalextric Lap Counter Crossie The Completed Projects Collection 6 03-11-2011 01:26 PM
wind energy project elecidiot The Projects Forum 2 10-07-2010 05:38 PM
Project Idea HELP mnhusker20 The Projects Forum 3 10-05-2010 05:32 PM
Will This Project Go Fine With My Subjects? dogar sahab The Projects Forum 4 09-01-2010 03:55 AM
Is this a good DC motor to use for small wind generator project? jwilli The Projects Forum 1 04-23-2009 12:55 AM

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 07:23 AM.


User-posted content, unless source quoted, is licensed under a Creative Commons Public Domain License.
Powered by vBulletin
Copyright ©2000 - 2014, vBulletin Solutions, Inc.