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SARDAR VALLABHBHAI PATEL

INSTITUTE OF TECHNOLOGY

MECHANICAL - 1

15BEMEG052

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CLASSIFICATION OF ELECTRIC

DRIVE

GENERALLY CLASSIFIED INTO 3CATEGORIES:

I. GROUP DRIVE

II. INDIVIDUAL DRIVE

III. MULTIMOTOR DRIVE

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GROUP DRIVE :

IF SEVERAL GROUP OF

MECHANISMS OR MACHINES AREORGANIZED ON ONE SHAFT AND

DRIVEN OR ACTUATED BY ONE

MOTOR, THE SYSTEM IS CALLED A

GROUP DRIVE OR SHAFT DRIVE.

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ADVANTAGE :

MOST ECONOMICAL

 DISADVANTAGE:

1. ANY FAULT THAT OCCURS IN

THE DRIVING MOTOR RENDERSALL THE DRIVING EQUIPMENT

IDLE.

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2. EFFICIENCY LO BECAUSE OF

LOSSES OCCURRING IN THE

ENERGY TRANSMITTINGMECHANISMS !POER LOSS"

#. NOT SAFE TO OPERATE.

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$. NOISE LEVEL AT THE OR%ING

SPOT IS HIGH.

5. FLE&IBILITY.

SINGLE MOTOR DRIVES A NO OFMACHINES THROUGH BELT FORM

COMMON SHAFT.

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INDIVIDUAL DRIVE:

1. IF A SINGLE MOTOR IS USED TO

DRIVE OR ACTUATE A GIVENMECHANISM AND IT DOES ALL THE

'OBS CONNECTED ITH THIS

LOAD , THE DRIVE IS CALLED

INDIVIDUAL DRIVE.

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2. ALL THE OPERATIONSCONNECTED ITH OPERATING A

LATHE MAY BE PERFORMED BY A

SINGLE MOTOR.

#. EACH MOTOR IS DRIVEN BY ITS

ON SEPARATED MOTOR ITH THE

HELP OF GEARS , PULLEYS ETC.

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DISADVANTAGE:

POER LOSS OCCURS.

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 MULTI MOTOR DRIVE:

( EACH OPERATION OF THE

MECHANISM IS TA%EN CARE OF BYA SEPARATE DRIVE MOTOR.

( THE SYSTEM CONTAINS SEVERAL

INDIVIDUAL DRIVES EACH OFHICH IS USED TO OPERATE ITS

ON MECHANISM.

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( SEPARATE MOTORS ARE PROVIDEDFOR ACTUATING DIFFERENT PARTS

OF THE DRIVEN MECHANISM.

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MULTI MOTOR

DRIVE

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ADVANTAGE :

1. EACH MACHINE IS DRIVEN BY A

SEPARATED MOTOR IT CAN BE RUN

AND STOPPED AS DESIRED.2. MACHINES NOT REQUIRED CAN

BE SHUT DON AND ALSOREPLACED ITH A MINIMUM OF

DISLOCATION.

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#. THERE IS A FLE&IBILITY IN THE

INSTALLATION OF DIFFERENTMACHINE)S.

$. IN THE CASE OF MOTOR FAULT,

ONLY ITS CONNECTED MACHINE

ILL STOP HERE AS OTHERS ILLCONTINUE OR%ING UNDISTURBED.

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5. ABSENCE OF BELTS AND LINE

SHAFTS GREATLY REDUCES THE RIS%OF A ACCIDENTS TO THE OPERATING

PERSONNEL.

 

DISADVANTAGE:

INITIAL HIGH COST.

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PREPARED BY

RASESH PANKHANIYA

THANK YOU