How it Works
This
low cost solid state wind power generator turns the flexing
of an omnidirectional shaft directly into
electricity, using piezoelectric
materials.
A
tall flexible stalk is surrounded with many embedded
piezoelectric discs that are alternately sandwiched
in-between rigid backup plates. These piezoelectric
structures (toroids) compress and stretch when flexed in
any direction, converting any motion directly into
electricity with no intermediary mechanical generators,
transmissions or propellors. A weighted wind-capturing tip
can sustain the energy output from a single gust of wind by
the continuing oscillation of this inverted pendulum after
the gust fades. In light winds the power extraction would
be maximized while remaining robust in high winds.
Highly Leveraged Force
= High Pressure = Peak Piezo Power
This is a simplified formula that
estimates the potential vertical forces generated near the
base of a windulum. Assuming a wind force
F
of 500 pounds, a
height H of 100 feet, and a width
W
of one foot, we can generate
a compression pressure C of 50,000
pounds. This is the
force available to squeeze and stretch just one of the many
piezoelectic discs in the stack.
Remember that only 500 pounds applied to one cubic
centimeter of quartz produces over 12,500
volts.
The Windulum's power
output increases exponentially as models increase in size.
Practical heights could range between 45 to 250 feet. More
ambitious taller models could result in extraordinary
output and efficiency.
Maximum pendulum action is achieved by optimizing a weighted, wind-catching tip. The sphere shown here represents a placeholder for optimal designs to be researched.
Home • Piezoelectrics • R&D