How to Connect a Wind Turbine to a Home Energy Box

Written by alyson paige
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How to Connect a Wind Turbine to a Home Energy Box
Vertical Axis Wind Turbine Front View (http://www.ette.no/wind/pic/vawt10f.gif, http://www.dep.state.pa.us/dep/DEPUTATE/minres/districts/home page/Moshannon/Windmill/Windmill4.gif, http://howto.altenergystore.com/images/article/windgridtie_with_battery.png, http://www.windpoweruk.com/images/wiringdiagram20wind48v.gif, http://www.otherpower.com/wisc/rectifiers.JPG,)

For a wind turbine to provide renewable energy to your home, you must connect it to a renewable energy (RE) battery, also called a home energy box. It is not possible to directly output wind turbine energy. The wind turbine stator voltage (12, 24, or 48 volts) must match the battery voltage. There is a standard process for connecting a wind turbine to a battery.

Skill level:
Moderate

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Things you need

  • 12-, 24- or 48-volt battery
  • Rectifier
  • Heat sink
  • Shutdown switch
  • Input breaker
  • Wire
  • Controller (optional, but recommended)

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Instructions

  1. 1

    Bolt the rectifier to an aluminium heat sink. If the rectifier is not properly connected to a heat sink, it will burn out almost immediately. The heat sink also ensures that the rectifier will carry its rated current. Usable heat sinks can be salvaged from old car engines.

    How to Connect a Wind Turbine to a Home Energy Box
    Battery Bank
  2. 2

    Wire a shutdown switch between the turbine and the rectifier. Select a switch that will short all incoming phases and stop the turbine blades quickly. Use the shutdown switch when raising and lowering the tower for protection in extreme winds and for tower or wiring problems. Use wire that is sized for the current your wind turbine will generate.

    How to Connect a Wind Turbine to a Home Energy Box
    Wind Turbine Connection Diagram
  3. 3

    Connect the input breaker between the rectifier and the battery bank. This is a required code step. The input breaker must be significantly larger than the turbine's maximum possible current. Otherpower.com recommends a 50-amp fuse for a 48- volt machine, 100 amps for a 24-volt, and 200 amps for a 12-volt machine. Now you are running DC power on two wires straight to the battery bank.

    How to Connect a Wind Turbine to a Home Energy Box
    Wind Turbine Battery Wiring
  4. 4

    Connect a controller to prevent system voltage from climbing to levels that can damage your equipment. A 40-amp controller for a 48- volt system and a 60-amp controller for a 24-volt system are appropriate. Controllers for a 12-volt system are tricky. If you want to use one, you should consult an electrician.

    How to Connect a Wind Turbine to a Home Energy Box
    Rectifiers

Tips and warnings

  • There is an electrical hazard to this process. It is wise to consult an electrician before beginning.

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