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Motor Testing
Motor Testing: DC motor / AC motor
testing system
The whole motor testing system
consists of electrical and
mechanical major sections. The
electrical equipment includes
different types of electric/
pressure transducers, torque meter,
industrial PC, switches, buttons,
indication lights, relays and a
cabinet. Mechanical section includes
the support plate, coupling, torque
transducer, gearbox, clamping device
and the magnetic power brake.
The motor testing equipment can
respectively measure the DC/
single-phase AC motor’s current,
voltage, torque, speed, input power,
output power, power factor and
efficiency. The system will also
control the loading which is the
magnetic powder brake. The Electric
Motor Testing System can carry out
the data collection, data storage
through the PC and processed the
data for curve plotting and report
printing.
Motor Testing: Three-phase
asynchronous motor testing system
The system consists of high-voltage
current cabinet, gauge control
cabinet and test stand. It adopts
the high accuracy electrical sensors
and torque transducers which can
satisfy three-phase asynchronous
motor’s voltage, current, frequency,
input power rate, power factor,
torque, speed, output power and
efficiency. The system can also test
and control wound resistance,
no-load, temperature rise, loading,
maximum and minimum torque.
Motor Testing: Motor
Experiment for Laboratory use
The system can satisfy the
professional course and experiments
of higher institutions like
"Introduction of electric motor",
"Motor and driving" and "Motor
control". This system has the great
extendibility which brings the
experimental learning for course
design and graduation project. For
student, it is a good system to
understand the common motor
performance and master the basic
operation of various motor types. It
also provides students the certain
degree of flexibility to combine and
create the experimental design.
The system can provide the
following tests:
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DC motor testing
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Transformer testing
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Asynchronous motor testing
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Synchronous motor testing
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Electricity driving testing
Before motor testing:
Categorization of electric motors
The classic division of electric
motors has been that of Direct
Current (DC) types vs. Alternating
Current (AC) types. This is more a
de facto convention, rather than a
rigid distinction. For example, many
classic DC motors run on AC power,
these motors being referred to as
universal motors.
The ongoing trend toward electronic
control further muddles the
distinction, as modern drivers have
moved the commutator out of the
motor shell. For this new breed of
motor, driver circuits are relied
upon to generate sinusoidal AC drive
currents, or some approximation of.
The two best examples are: the
brushless DC motor and the stepping
motor, both being polyphase AC
motors requiring external electronic
control.
Considering all rotating (or linear)
electric motors require synchronism
between a moving magnetic field and
a moving current sheet for average
torque production, there is a
clearer distinction between an
asynchronous motor and synchronous
types. An asynchronous motor
requires slip between the moving
magnetic field and a winding set to
induce current in the winding set by
mutual inductance; the most
ubiquitous example being the common
AC induction motor which must slip
in order to generate torque. In the
synchronous types, induction (or
slip) is not a requisite for
magnetic field or current production
(e.g. permanent magnet motors,
synchronous brushless wound-rotor
doubly-fed electric machine).
Reference download link:
Torque Transducer + Torque Meter
http://www.powerlinkpt.com/downloads/13.pdf
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