World's most efficient single-phase induction
motor
Ideal for solar powered applications.
These single-phase induction motors have such high efficiency that they
can be operated from inverters powered by solar power. The efficiency
of
each motor is equivalent to the full-load efficiency of a premium
high-efficiency
three-phase motor. A unique patented connection of the motor windings
to
a capacitor bank permits operation from a single-phase inverter
delivering
alternating current from a battery kept charged by solar cells.
Small motors of 0.3 horse power (HP), 0.5 HP, and 0.75 HP have been
tested. They operate near unity power-factor, which is an ideal load
for
an inverter. The capacitor bank has approximately the same leading
reactive
VARS as the motor windings have lagging reactive VARS.
Greater energy conservation in the home. 
High-efficiency polyphase motors can also be used on all air
conditioners
and freezers for single-phase, saving substantial amounts of energy for
consumers, and reducing the severity of summer afternoon power system
overloads
due to inefficient air conditioners.
Information on larger motors which are placed
in
service.
These are the largest single-phase high-efficiency induction motors in
the world.
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Otto Smith's Home Page
Contact:
Otto J. A. Smith
otto@123phase.com
123Phase Inc.
POB 1451
Port Townsend WA, 98368
Tel: (360) 379-0142
Fax: (866) 612-9074
Webmaster: cshock@fmtc.com
Patented by:
Otto J.M. Smith
Smith and Sun®