Power Electronics, Drives and control

BY : • KIRAN PURANIK• YOGESH TAMHANE

Way of journey… Introduction to power electronics Introduction to motor drives Secrets of motor drives Types of motor drives “Smart” baby motor drives References

Power Electronics? Power electronics = High Power

Utilities Relates to control of flow of current. Scope of power electronics: milliwamtts

⇒ Gigawatts Main motive is efficiency. Some power electronics device

Mercury arc tube Rectifiers, etc.

Power devices requirements High switching speed Minimum losses High on state current High off state voltage Low noise

Power Devices

Power Device

s

Diodes

FETs

IGBT

Transistors

Motor drives? It is device to control:

Speed Direction Torque

Motor Drives Component: Diodes Thyristor family devices

Over all optimizes performance.

Motor Drive Schematic

Basic Classification

AC Drives

• When The Power Supply is AC

DC Drives

• When The Power Supply is DC

MOTOR DRIVES: TYPES

MOTOR DRIVERS

UNIVERSAL MOTOR DRIVE

AC UNIVERSAL MOTOR DRIVE

DC UNIVERSAL MOTOR DRIVE

HIGH FREQUENCY PWM UNIVERSAL

MOTOR DRIVE

BRUSHED DC MOTOR DRIVE

SINGLE SWITCH CHOPPER DRIVE

FULL BRIDGE CONVERTOR DRIVE

SINGLE PHASE INDUCTION MOTOR

DRIVE

BIDIRECTIONAL

INDUCTION MOTOR DRIVE

MULTIWINDING ON OFF MOTOR DRIVE

PHASE CONTROLLED

INDUCTION MOTOR DRIVE

HIGH FREQUENCY PWM INDUCTION

MOTOR DRIVE

THREE PHASE INDUCTION MOTOR

DRIVE

SCALAR V/F DRIVE

VECTOR DRIVE

STEPPER MOTOR DRIVE

UNIPOLAR STEPPER MOTOR

DRIVE

TWO PHASE BIPOLAR STEPPER

MOTOR DRIVE

MULTI PHASE BIPOLAR STEPPER

MOTOR DRIVE

SWITCHED RELUCTANCE MOTOR DRIVE

ASYMMETRICAL HALF BRIDGE PWM

DRIVE

SIMPLIFIED ASYMMETRICAL

HALF BRIDGE PWM DRIVE

BRUSHLESS DC PMSM MOTOR

DRIVE

SCALAR DRIVE

VECTOR DRIVE

Speed Control

Speed Control

Direction Control

S1 S2 S3

S4 Function

1 0 0 1 Motor rotates in one direction

0 1 1 0 Motor rotates in opposite direction

0 0 0 0 Motor free runs (coasts)

0 1 0 1 Motor brakes1 0 1 0 Motor brakes

H-Bridge Circuit

Truth Table

AC Universal Drive

DC Universal Motor Drive

High Frequency PWM Universal Motor Drive

Single Switch Chopper Drive

Full-Bridge Convertor Drive

Bidirectional Induction Motor Drive

Multi-Winding On/Off induction Motor Drive

Phase-Controlled Induction Motor Drive

High Frequency PWM Induction Motor Drive

Unipolar Stepper Motor Drive

Two-Phase Bipolar Stepper Motor Drive

Multi-phase Bipolar Stepper Motor Drive

“Smart” Baby Motor Drive

Driver ICs H-Bridge ICs.:

L293/L293D L298

Programmable Motor Drives

Programming Assembly

Conclusion Thus, the operation of any Drive can be

studied by observing it’s basic circuit. The new inroads into development of an

IC chip instead of a bulky drive circuit has improved cost- efficiency of the system.

References Websites:

www.wikipedia.org www.st.com www.haydonkerk.com

Books: 1 2 3

THANK YOU ALL

For Your Precious Time!