CYCLOCONVETERS

1. SUBMITTED TO:- SUBMITTED BY:-
MR. PARVEEN MALIK (LECTURER) AKSHAY PARMAR
MR. AJAY JAISWAL (LECTURER) (1509160)
MS. ANU SAINI (LECTURER) ECE
SEMINAR ON
CYCLOCONVETERS

2. CONTENTS
INTRODUCTION
TYPES
PRINCIPLE
SINGLE PHASE CYCLOCONVETER
THREE PHASE CYCLOCONVERTER

3. CYCLOCONVERTER
A Device which converts input power at one frequency
to output power at a different frequency with one-
stage conversion.
AC to AC conversion
Developed in 1930 , GERMANY
Uses SCR (THYRISTORS)
Force commutation

4. TYPES
Step up cycloconverter ( Fo>Fs )
Step down cycloconverter( Fo<Fs )
Single phase to single phase
 Mid-point cycloconverter
 Bridge type cycloconverter
Three phase cycloconverter

5. SINGLE PHASE CYCLOCONVETER
Step up Cycloconverter:-
 LOW Frequency to HIGH Frequency
Step down Cycloconverter:-
 HIGH Frequency to LOW Frequency

6. STEP-UP CYCLONVERTER
LOW TO HIGH FREQUENCY CONVERTER
 MID-POINT CYCLOCONVERTER
 BRIDGE TYPE CYCLOCONVERTER

7. MID-POINT CYCLONVERTER

8. BRIDGE TYPE CYCLONVERTER

9. STEP-DOWN CYCLONVERTER
HIGH TO LOW FREQUENCY CONVERTER
 MID POINT CYCLOCONVERTER
 BRIDGE TYPE CYCLOCONVERTER

10. MID-POINT CYCLONVERTER

11. BRIDGE TYPE CYCLONVERTER

12. THREE PHASE CYCLOCONVERTER
THREE PHASE TO SINGLE PHASE
THREE PHASE TO THREE PHASE

13. THREE PHASE TO SINGLE PHASE

14. THREE PHASE TO THREE PHASE

15. ADVANTAGES DIS-ADVANTAGES
Direct conversion
Compact system
Variable speed range
High quality wave
Low speed applications
Large number of thyristors
Complex circuitry
Output frequency is limited
FEATURES

16. APPLICATIONS
SPEED CONTROL DRIVES
INDUCTION HEATING
VARIABLE FREQUENCY INPUT AND GETTING CONSTANT
OUTPUT

17. THANK YOU !!