1. A TWO OUTPUT SERIES
RESONANT INVERTER FOR
“INDUCTION HEATINGCOOKING” APPLIANCES
PRESENTED BY:
UDAY KUMAR.A
VAMSHI KRISHNA.N
ADITHYA.B

2. OBJECTIVES:



TO DESIGN A TWO OUTPUT SERIES
INVERTER FOR MULTIPLE BURNER
INDUCTION HEATING-COOKING
APPLIANCES
TO CONTROL TWO OUTPUTS(LOADS)
SIMULTANEOUSLY AND INDEPENDENTLY
UP TO THEIR RATED POWERS
TO MAKE USE OF AVC AND ZVS
TECHNOLOGIES EFFECTIVELY

3. INVERTER TOPOLOGIES:



USING SINGLE O/P INVERTER FOR TWO
OR MORE BURNERS
USING SEVERAL RESONANT CAPACITORS
CONNECTED TO LOADS BY MEANS OF
ELECTRO-MECHANICAL SWITCHES
USING MULTIPLE O/P INVERTERS

4. REQUIREMENTS:



TWO O/P SERIES RESONANT INVERTER
VARIABLE O/P POWER
FIXED FREQUENCY CONTROL

5. INDUCTION HEATING-COOKING
APPLIANCE SCHEMATIC
DIAGRAM:

6. BASIC STRUCTURE OF TW0 O/P
SERIES RESONANT INVERTER

7. DOUBLE FULL BRIDGE
STRUCTURE FOR SELECTED
AVC CONTROL

8. ASYMMETRICAL VOLTAGE
CANCELLATION (AVC):




Asymmetrical Voltage Cancellation is a
generalized control technique for resonant
inverters
This technique is mostly applied to series
resonant inverters
This technique improves performance and
achieves better efficiency than conventional
fixed frequency control strategies
It considers ZERO VOLTAGE SWITCHING
operation , output power and load variations

9. ZERO VOLTAGE
SWITCHING(ZVS):

Zero voltage switching can be defined
as conventional square wave power
conversion
during the switch’s on-time with “resonant”
switching transitions.

10. ALGORITHM AND
MATHEMATICAL PROCEDURE
INVOLVED:

11. SYNTHESIS OF CONTROL
CIRCUIT:

12. SYNTHESIZED TWO O/P
SERIES RESONANT INVERTER

13. DERIVATION OF DIFFERENT
CONFIGURATIONS

14. PERIODIC SEQUENCE OF
CONFIGURATIONS:

15. TABULAR COLUMN SHOWING
THE ORDER OF TRIGERRING
OF VARIOUS IGBT’S

16. IMPLEMENTED TWO O/P
SERIES RESONANT INVERTER

17. SPECIFICATIONS & HARDWARE
USED:







IGBT TRANSISTORS WITH ANTI-PARALLEL
DOIDES(intersil HGTG20N60B3D)- 6 nos
Loads: R1,R2=9.5 OHMS
L1,L2=60 u H
C1,C2=450nF
Peak Input Voltage=325V
Switching Frequency=48KHz
Maximum O/P Power=3.2kW

18. PRACTICAL ADVANTAGES:






Higher Utilization Ratio of Electronics
Higher maximum power
It is possible to share some components of the
power converters
Electromagnetic Noise spectrum is reduced
Acoustics noises and interference are
eliminated
High frequency switching is possible

19. SCOPE & CONCLUSION:
o
o
o
o
Use of Asymmetrical Voltage
Cancellation(AVC) and Zero Voltage
Switching(ZVS) enables the user to obtain a
quick HEATING FUNCTION
Optimum Utilization of rated power
Different from traditional approaches which
makes use of resonant capacitors , large
number of bidirectional switches etc.,
Guarantees greater efficiency and durability in
all industrial and domestic induction cooking
appliances.

20. REFERENCES:




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[1] M. K. Kazimierczuk and D. Czarkowski, Resonant Power
Converters. New York: Wiley, 1995.
[2] L. Hobson and D. W. Tebb, “Transistorized power supply
for induction heating,” Int. J. Electron., vol. 59, pp. 533–542,
May 1985.
[3] F. P. Dawson and P. Jain, “A comparison of load
commutated inverter system for induction heating and melting
applications,” IEEE Trans.Power Electron., vol. 6, no. 4, pp.
430–441, Jul. 1991.
[4] L. Hobson, D. W. Tebb, and D. Turnbull, “Dual element
induction cooking unit using power MOSFETs,” Int. J.
Electron., vol. 59, pp. 747–757, Jun. 1985.
[5] H. W. Koertzen, J. D. van Wyk, and J. A. Ferreira, “Design
of the halfbridge series resonant converter for induction
cooking,” in Proc. IEEEPower Electronics Specialists Conf.
(PESC), 1995, pp. 729–735.