- Aim of the Microproject AC drive control speed of at motor by varying output voltage and frequency through sophisticated microprocessor controlled electronics device. AC drive consists of Rectifier and inverter units. Rectifier converts AC in DC voltage and inverter converts DC voltage back in AC
-
Speed control of a DC motor is either done manually by the operator or by means of an automatic
control device. This is different to speed regulation — where the speed is trying to be maintained (or ‘regulated’) against the natural change in speed due to a change in the load on the shaft.
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Part B
Topic
:-” study
the speed control of AC and DC drivers”
Brief Introduction:-
·
AC drive
control speed of ac motor by varying output voltage and frequency through sophisticated microprocessor controlled electronics
device. AC drive consists of Rectifier and inverter units. Rectifier converts AC in DC voltage and
inverter converts DC voltage back in
AC voltage.
·
Speed
control of a DC motor is either done manually by the operator or by means of an
automatic control device. This is different
to speed regulation — where the speed is trying to be maintained (or ‘regulated’) against the natural change in speed due
to a change in the load on the shaft.
What is AC Drive?
AC drive
(alternating current drive) converts the AC supply to the DC using converter
circuits based on rectifier and invert it back to the AC from DC using inverter to control the speed of
electric motors especially
three phase motors.
AC Supply Converted to DC –> Again Inverted to AC
—> Electric Motor
is also known as VFD (variable frequency drive), VSD (variable speed drive) or ASD (Adjustable
they convert the fixed
input voltage and frequency into the variable voltage and frequency output to control the
What is DC Drive? A pc drive (direct current drive) is a DC motor speed control system which convert the input AC supply to the DC using converter circuit based on rectifier (diodes and thyristors) to control the speed of DC motors. Earlier, the variable DC voltage was generated by DC generators to control the speed of a DC motor. Nowadays, thyristors are used to convert the AC to the DC while mercury arc rectifier and thyristor converters are also used for the same purpose.
There are additional two types of DC drives viz:
. Analog DC Drives
· Digital DC Drives
Output
of micro project
· Know about Different types
·
Increase
knowledge about it.
·
Increase communication skill .
·
Experience
team work .
· Ability the face all problems .
Skill developed in micro project :–
In this micro project I know about
Different types, Increases knowledge about its Applications about Uses, ability to
collect information increase communication skills.
