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Benefits of Written-Pole®
Single-Phase Motors
page 5
6) High Inertia Starting Capability
Since Written-Pole®
motors are capable of sustaining starting conditions for much greater
duration than conventional motors without overheating, they are able to
start very high inertia loads for a given rating. This capability is further
enhanced by the ability to synchronize under load allowing synchronous
operation to be attained even though the motor is under load (a by-product
of the ability to tailor the rotor's magnetic pole configuration for optimal
starting characteristics while starting).
7) Instantaneous Restart capability
The low starting current and flexible starting
characteristics of Written-Pole®
single-phase motors allow them to undertake an instantaneous re-start after
a momentary power interruption without inducing the high transient torque
pulsations common to conventional single or three-phase induction motors
when re-closed out of phase with the utility supply. This capability allows Written-Pole®
single-phase motors to be configured for instantaneous restarts without fear
of damaging the motor or driven equipment.
8) Ride-Through Characteristics
(Power-Ride®
Configuration)
An inside-out or external rotor configuration is
available which integrates a substantial flywheel into the Written-Pole® single-phase
motor allowing the motor to continue powering its load (at a slightly
reduced speed) during momentary power interruptions such as utility breaker
operations). The flywheel also has the effect of softening the motor's
starting and stopping characteristics enabling a dramatic reduction (and in
most cases elimination) in the generation of water hammer in irrigation or
water pumping systems.
Additional information related to the design,
construction, use and application of Written-Pole®
single-phase motors can be obtained from Meridium Power's web site at
www.meridiumpower.com 50 Hz
available for those region operating on a 50 Hz system.
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