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EFFICIENCY OPTIMIZATION

CONTROL OF SPIM DRIVES

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PROJECT MEMBERS:

C.K LAKSHMI NARAYANA REDDY

AR.K ANBU SELVI

S.DHANALAKSHMI

B.NISHANTHINI

INTERNAL GUIDE:

Mr.V.GOVINDAN

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BLOCK DIAGRAM

Key

switch

Micro

controller

Driver

circuit

LCD

Power

supply

IR

circuit

Motor

Load

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PARTS OF BLOCK

DIAGRAM

POWER SUPPLY UNIT

MICROCONTROLLER

IGBT DRIVER

IR SENSOR

INDUCTION MOTORLCD

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POWER SUPPLY UNIT

A power supply unit ( PSU) is a device or system that supplies

electrical or other types of energy to an output load or group of

loads.

The Transformer steps up or steps down the input line voltage and

isolates the power supply from the power line. The Rectifier section converts the alternating current input signal to

a pulsating direct current and it is not desirable.

Filter section is used to convert pulsating dc to a purer, more

desirable form of dc voltage. Regulator maintains the output of the power supply at a constant

level in spite of large changes in load current or input line voltages.

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PSU CIRCUIT

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PIN DIAGRAM:

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IGBTWith the combination of an

easily driven MOS gate and

low conduction loss, IGBTs

quickly displaced power

bipolar transistors as thedevice of choice for high

current and high voltage

applications.The balance in tradeoffs

between switching speed.

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IR SENSOR

VCC

5V

R1

1.0k;

R210k;

LED1

Q1

BC547BP

R4100k;

R51.0k;

LED2IRD

TO MICRO CONTROLLER

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ABOUT IR SENSOR

IR sensor consists of a transmitter and

receiver. When the motor is off the

transmitter transmits light to the receiver and

thereby sends signal to the micro-controller.

But when the motor is ON the motor

interrupts the light from transmitter to fall on

the receiver.

So the IR sensor records the number of motor

revolutions per minute and thereby calculates

the speed

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LIQUID CRYSTAL DISPLAY

RS232 compatible serialinterface (2400 & 9600 baudselectable)

Externally selectable serial

polarities (Inverted & Non-Inverted)

Serially controllable contrastand backlight levels

8 user programmablecustom characters

16 Byte serial receive buffer

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Interfacing Microcontroller and LCD

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SOFTWARE

REQUIREMENT

Embedded C

Keil compiler

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REFERENCE

I. Boldea and S. A. Nasar,The Induction MachineHandbook. NewYork: CRCPress, 2001.

F. Abrahamsen, F. Blaabjerg,J. K. Pedersen, P. Z.Grabowski, and P.Thogersen, On the energycontrol of standard and

high-efficiency inductionmotors in CT and HVACapplications , IEEE Trans.Ind. Appl., vol. 34, no. 4, pp.822831, Jul./Aug. 1998.

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