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DIGIVAC is a “DSP
based motor controller” trainer kit
for colleges. A DC Motor with double shaft
extension is coupled with the AC Motor on
one side and to a 1000 PPR encoder (optional)
for feedback on the other side. The inverter
drive consists of a selector switch by which
DSP mode or standard mode can be selected.
In the standard mode the controller inbuilt
into the Inverter drive controls the AC motor.
The features of the AC Motor drive like V/F,
slip compensation, etc. can be studied from
the drive. In the DSP mode, the user can initially
test some sample programs using the DSP board
and the controller. Subsequently, they can
write different programs to control the AC
Motor. With the help of the DSP board and
the inverter drive, they can test algorithms
for V/F control, vector control, etc. without
having to worry about constructing the hardware
for protection, gate drive, sensing, etc..
Hence the lead-time for testing a drive with
any algorithm is reduced to learning the language
to program the DSP.
- A 3
Phase AC Induction Motor coupled
to a DC
Motor along with a base plate
and couplings is included.
- 3
Phase AC Induction Motor
with 6 terminals can be provided
so that standard undergraduate experiments
can be conducted.
- A SCR based DC
Drive can also be added with an
extra DC Motor optionally so that
all undergraduate lab experiments
with respect to AC Motors and DC
Motors can be conducted with a single
setup.
- An INVAC
AC Drive along with a DSP Controller
board along with a power supply
for the controller board is included.
- Any DSP board
can be used instead of the one provided
with the DIGIVAC system. The user
has to generate only 3 PWM gate
drive pulses to control the AC Motor
- Provision to
couple an optional position encoder
for feedback.
- Selector switch
by which DSP mode or standard mode
can be chosen to run the AC Motor
- In the standard
mode, the controller inbuilt into
the Inverter drive controls the
AC motor. The features of the AC
Motor drive like V/F, slip compensation,
etc. can be studied in this mode.
- In the DSP mode,
the user can initially test some
sample programs using the DSP board
and the controller. Subsequently,
they can write different programs
to control the AC Motor using different
algorithms like V/f, Direct Torque
Control or Indirect Vector Control.
- Laboratory Experiments
developed by the Indian Institute
of Science, Bangalore are provided
along with the solutions to the
experiments.
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