- Sandy and QAZ,
- For your enjoyment, I've attached a few pictures of my "Attic-Mounted
- I was successful acquiring a Building-Permit from the city
of Lake Dallas, Texas, USA. I was required to hire a structural
would assure the city that the structure of my home was structurally
secure enough to support the wind-turbines. The mounting that
and implemented is designed to distribute the wind-stresses across
a large area of my home by attaching the mounting to numerous
rafters and ceiling joists.
- As you know, I am in a LOW-WIND area. Both 48SCS WIND-TURBINES
have SIX-BLADES that provide a significant amount
of TORQUE in low-winds. The center of these two 5 foot diameter
turbines are located 32 1/2 feet above ground on my 28 foot roof
has to travel around and OVER my house. I believe that my roof-top
provides a 20% increase in wind velocity thereby providing around
times the wind-power compared to the surrounding area's wind-power.
- In a light breeze, each wind-turbine starts up and sustains
enough rotation to keep a 100 VAC light-bulb dimly lit beginning
at 12 VDC. In gusts
both light bulbs brighten really well and I have measured over
110 VDC in 35 miles per hour gusts.
- I am expecting to receive the www.SWEA.NL
1000 Watt Gird-Tie Inverter next week and begin testing with
it. I plan to parallel-connect both
turbines to this inverter.
- SWEA has recently changed their firmware to allow user-customizations
of the DC to AC POWER-CURVES !!!. I am thinking about adjusting
the CPU POWER CURVE to begin inversion at a low voltage (15 to
20 VDC) and max-out (250 watts) at 52 to 55 VDC. If I get as
little as 25
watts out of these low winds this system will definately prove
to be a HUGH-SUCCESS !!!
- SWEA does incorportate a DUMP-LOAD however I am thinking
about setting up a Programable Logic Controller (PLC) that will
the DC input voltage (analog input) and uses up to eight relay
outputs to progressively switch (DUMP) the load to as many as
devices (maybe a bank of eight 150 watt light bulbs). As the
wind subsides, the Programmable Logic Controller would switch
off the eight
Dump-Load devices one at a time while maintiaining maximum allowable
DC input-voltages for maximum AC production by the
SWEA-Inverter. I will use the SWEA DUMP-LOAD as a Secondary (Fail-Safe)
- MY THANKS GOES TO YOU ALL !!!
- Lake Dallas, TX 75065
Another Nice Looking Wind
Farm - "Thanks to all the
people at Hornet Wind Turbines, Brandon Smith"