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Solid State Drives Premium Lecture Notes (All Units) - Scan and Type Version

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Solid State Drives Premium Lecture Notes (All Units) - Scan and Type Version
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Solid State Drives Lecture Notes prepared by Bhuvana. Specially for B.E Electrical and Electronics Engineering. Includes Both Scan as well as Type Version. Syllabus is based on Anna University , B.E Electrical and Electronics Engineering R2008 Regulation.
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Solid State Drives Lecture Notes prepared by Bhuvana. Specially for B.E Electrical and Electronics Engineering. Includes Both Scan as well as Type Version. Syllabus is based on Anna University , B.E Electrical and Electronics Engineering R2008 Regulation.

Content :

UNIT I

DRIVE CHARACTERISTICS

Classification of Electric Drive:

Generally classified into 3 categories:

I.             Group drive

II.            Individual Drive

III.           Multimotor Drive

Advantages

disadvantages

Block Diagram of a simple electric drive

Power Modulator

Parts of Electric Drives

It can classified as

1.            Controlled rectifier (AC to DC converters)

2.            Inverters (DC to AC converters)

3.            AC voltage controllers (AC to AC converters)

4.            DC choppers (DC to DC converters)

5.            Cyclo converters (Frequency conversion)

Electrical Source:

Sensing unit :

Control Units :

Classification of Electric Drive:

Main classification of electric drives are :

1.            DC drives and

2.            AC drives

Comparison between DC and AC drives:

 

Dynamics of Motor Load System :

Fundamental torque equation:

Classification of load torques :

1.Active Load torques

2.Passice Load torques

Characteristics of different types of load:

Torque proportional to speed:

Torque propositional to square of the speed :

Torque inversely propositional to speed:

Multiquadrant Operation

Operation of hoist in four quadrants

Steady state stability

inequality of equ (7).

Modes of operation of Electric drives

A Electric drives operates in B modes of operation.

1.            Steady state

2.            Acceleration including starting

3.            Deceleration including stopping.

Deceleration including stopping:-

Basics of Regenerative Braking:

 

UNIT II CONVERTER / CHOPPER FED DC MOTOR DRIVE

DC Motors and their performance :

Armature Resistance control :

Armature Voltage Control :

Ward – Leonard control system:

Phase Controlled converter fed DC Drivers

Single Phase drives:-

 

THREE-PHASE CONVERTER FED DC Drivers

THREE PHASE FULLY CONTROLLED RECTIFIER

CONTROL OF DC SEPARETLY EXCITED MOTOR

DC CHOPPER DRIVES

CHOPPER CONTROL OF SEPARATELY EXCITED DC MOTORS

Motoring control

Regenerative braking:

Dynamic braking

CHOPPER CONTROL OF SERIES MOTOR

Regenerative braking of DC series motor

Dynamic braking of DC series motor

CONTROL STRATEGIES

The various control strategies are

1.            Time Ratio control method (TRC)

2.            Current limit control method (CLC)

Current Limit Control:-

 

 UNIT – III

DESIGN OF CONTROLLERS FOR DRIVES

Closed loop control of Electric drive.

BLOCK DIAGRAMOF A CLOSED LOOP CONTROL SYSTEM

CURRENT LIMIT CONTROL

CLOSED LOOP TORQUE CONTROL

CLOSED LOOP SPEED CO CLOSED LOOP SPEED CONTROL SCHEME FOR ARMATE VOLTAGE CONTROL & FIELD WEAKENING CONTROL:NTROL:-

 

TRANSFER FUNCTION OF SEPARATELY EXCITED DC MOTOR

Speed controller

Proportional (P) controller:-

Proportional – Integral (PI) controller.

Converter selection and characteristics.

 

UNIT – IV

SYNCHRONOUS MOTOR DRIVES

Separate Controlled mode (or) True Synchronous Mode:

SELF – CONTROLLED MODE:

SELF CONTROLLED SYN MOTOR DRIVE EMPLOYING LOAD COMMUTATED THYRISTOR INVERTER

Voltage source inverter (VSI) fed syn Motor :

1)            Square wave Inverter     2) PWM Inverter

3)            Chopper with square wave Inverter

 

VSI fed syn motor drive has

1.            Reasonable low

2.            Converter cost high

3.            Muti motor operation is possible

4.            Open loop control may pose slability problems at low speeds

5.            PWM drive has better dynamic response than square wave drive

6.            Find application as generate purpose drive for low and medium powers.

Motor Power factor control:

Current source Inverter (CSI) fed SYN MOTOR

Constant Marginal Angle control:-‘

Continuation of current source inverters forced commutation circuits:

Permanent Magnet Synchronous Motor Drive

Sinusoidal PMAC Motor Drives:

 

UNIT V

3φ INDUCTION MOTOR DRIVES

Slip power Recovery System:

Kramer System

Improved version of Kramer System:

Closed Loop control for static KRAMER system:

Scherbius System:

Dc link static Scherbius drive:

Cycloconverter static Scherbius drive:

 

Additional Information

Additional Information

Pages 199
Author N/A
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