Hello,
my name is Bob Warden, and I’m the president of
QLog Corp. That’s me in the photo with my
Southwest Windpower Whisper 200 wind turbine. I’ve
been the proud owner of the Whisper 200 for a few
years, but I’ve been disappointed with its low
wind energy output. I’d see the blades spinning
fairly fast without any power output from the wind
turbine’s charge controller. I decided to find a
way to capture that unharnessed energy.
Our
solution for increased energy output is the Wind
Miser. The Wind Miser gets more power out of the
wind you have, which is the next best thing to
more wind. The Wind Miser increases your wind
turbine’s energy output using a high efficiency AC
to DC converter and a low wind voltage booster
that is matched to the wind turbine’s power curve.
This results in increased power output at wind
speeds both above, and below the original cut in
wind speed, which is the speed below which no
power would be produced without the Wind Miser.
Considering
all you have invested in your wind turbine, tower,
power equipment, wire, and installation, the price
of the Wind Miser, with its extra generated
energy, easy installation, our thirty day return
guarantee, and our one year warranty, makes your
Wind Miser purchase a no brainer. I am very happy
with my Wind Miser, and you will be very happy
with yours. I guarantee it.
Thank
you for checking out the Wind Miser, the next best
thing to more wind. You can have more power than
you think. More energy, more often. I look forward
to making you one of our happy customers, and to
improving your energy independence. Get your own
Wind Miser, and smile when you see that green
charging LED lighting more often.
- Sincerely,
- J.
Robert Warden
President, QLog Corp.
OUR GUARANTEE:
We
can’t promise how much more energy the Wind Miser
will extract from your wind turbine due to
variations in wind profiles, only that it will
generate more energy than you do now. We can offer
you this guarantee. If you aren’t happy with your
Wind Miser and the additional wind turbine energy
it generates, you may return the Wind Miser, in
its original condition, within thirty days of
purchase, for a full refund of the purchase price,
less the shipping charges. We will also warrant
the Wind Miser against manufacturing defects for
one year after purchase, and we will repair or
replace a defective unit within the warranty
period.
ORDERING INFORMATION:
We
currently offer nine Wind Miser models, which
optimize the Wind Miser circuitry for each
turbine’s power curve and operating battery
voltage.
WM-W148,
for Whisper 100 at 48 volts: $390
WM-W136, for Whisper 100 at 36 volts: $390
WM-W124, for Whisper 100 at 24 volts: $390
WM-W112, for Whisper 100 at 12 volts: $420
WM-W248, for Whisper 200 at 48 volts: $390
WM-W236, for Whisper 200 at 36 volts: $390
WM-W224, for Whisper 200 at 24 volts: $420
WM-W212, for Whisper 200 at 12 volts: $420
WM-W548, for Whisper 500 at 48 volts: $440
At
this time, we do not support the Whisper 500 when
operating at 24 or 36 volts.
We
will consider adding additional Wind Miser models
to our line as we become aware of other wind
turbines, which have three phase AC power outputs
of three kilowatts or less. Please contact us if
you have a wind turbine that you would like us to
support.
TO ORDER:
To
order, please call 513-874-1211. Our online
ordering page is under construction and is coming
soon.
We
accept VISA, Master Card, and Discover.
INSTALLATION INFORMATION:
The Wind Miser WM-WXXX models consist of
a circuit board that simply and quickly mounts
inside the existing Whisper charge controller. The
Wind Miser mounts to the controller using four
screws without any controller modifications, and
uses three wires that connect to the charge
controller’s three wind turbine wire lugs. All
necessary wire and hardware are included. The Wind
Miser works with the original, unmodified Whisper
charge controller circuits, and does not affect
any controller functions. The Whisper charge
controller’s displays and charging LED will fully
indicate your Wind Miser’s increased energy
output. The Wind Miser is powered directly by the
wind turbine, not by the battery pack, so there is
no standby power drain from your batteries.
TECHNICAL DETAILS:
The
Wind Miser uses a MOSFET based AC to DC converter
to rectify the turbine’s three phase AC voltage to
DC voltage. The MOSFETs eliminate nearly all of
the two volts of voltage drop caused by the
Whisper charge controller’s diode rectifier. My
Whisper 200 at 48 volts provides about 25 amps of
full power charging current. That two volt diode
drop with 25 amps of current results in 50 watts
of power wasted as heat. That same current flowing
through the Wind Miser loses less than two watts
as heat. The extra 48 watts of power is then used
for battery charging instead of heating your
house. At lower battery voltages, the output
currents increase. The Whisper 200 at 12 volts
will output around 72 full power amps. 72 amps
times the two volt diode drop results in 144 watts
wasted as heat. That same current flowing through
the Wind Miser loses less than five watts, for
about a 139 watt increase in charging power! Look
at your wind turbine’s output current in amps on
the Whisper charge controller display at any time,
multiply that by two volts, and that is the power
in watts that you are wasting by not having a Wind
Miser.
Since
the Wind Miser recovers two volts of wind turbine
output, it begins charging the battery at lower
wind speeds. The reduction in cut in wind speed
increases as the operating battery voltage
decreases from 48 volts down to 36, 24, and 12
volts, since the two volts recovered becomes an
increasingly higher percentage of the wind
turbine’s output voltage, ranging from over four
percent at 48 volts to almost seventeen percent at
12 volts.
The
Wind Miser’s MOSFET AC to DC converter, with its
increased power output and improved low wind
performance, works very well, but it is only half
of the solution. The wind turbine has poor low
wind performance because it must output a voltage
that is higher than the battery voltage plus the
charge controller’s voltage drop, before battery
charging can occur. When the turbine’s output
voltage falls below that minimum level at low wind
speeds, no power output occurs. The MOSFET AC to
DC converter lowers that minimum required output
voltage by eliminating nearly the entire voltage
drop of the charge controller, which is a good
start.
However,
to get really good low wind performance, the
turbine voltage must be boosted from the unusable
low wind voltage up to the battery voltage. The
Wind Miser extracts less power at the lowest wind
speeds, and increases the power extracted as the
power in the wind increases in proportion to the
turbine’s power curve. This maximizes the low wind
power extracted without stalling the wind turbine.
The Wind Miser will provide battery charging power
starting at around one watt at the minimum
effective turbine speed of about two revolutions
per second. The power output will increase from
there to about 30 watts, 50 watts, and 75 watts,
for the Whisper 100, 200, and 500 respectively,
when operating at the original cut in wind speed.
As the wind speed increases above the original cut
in wind speed, the voltage boost electronics
continue to increase power output, and improves
the power factor loading of the wind turbine’s
alternator.
Less
energy is available in low wind than high wind,
but there are usually more occasions with low wind
than there is with high wind. This can result in a
significant increase in monthly energy output
using the Wind Miser. Consider a simplified
example with a Whisper 200 at 48 volts, operating
with a constant wind just below the cut in wind
speed of seven miles per hour that persists every
hour of every day for a month. Without the Wind
Miser you wouldn’t generate any power. With the
Wind Miser, you would generate about 36 kilowatt
hours for the month, which is 50 watts times 24
hours per day times 30 days.
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