This deals with the novel single-switch resonant power converter for renewable energy generation applications. This circuit topology integrates a novel single switch resonant inverter with zero-voltage-switching (ZVS) with an energyblocking diode with zero-current-switching (ZCS).

1. Presented by
K SAMEER AHMED
1604-14-743-005
At MJCET
Under the guidance of
DR. Md HASEEB KHAN
Professor, EED
MJCET

2. Presentation overview
 Introduction
 Basic Circuit diagram &
Assumptions
 Modes of Operation
 Conclusion

3. INTRODUCTION
 Nowadays, most power is obtained from
fossil fuels, sources may exhaust in near
future. So Renewable energy has become
attractive in recent years.
 They include wind turbines,
Photovoltaic(PV) modules, and fuel cell
systems.
 PV power generation is best among them.

4.  The output of the REG system is directly
connected to the BESS
 DC output source of the system will be fixed
to voltage of BESS
 DC-DC interface must be installed in between
 Conventionally hardswitching PWM technique
is used, which causes stress on the system
 For solving that problem and for high
performance resonant converters has to be
utilized

5.  In resonant converters switching loss
increases with switching frequency which
reduces the efficiency
 So for high switching frequencies soft
switching approaches must be used
 ZVS and ZCS are two commonly used soft
switching methods.

6. BASIC CIRCUIT DIAGRAM

7. Assumptions :-
 The switching elements of the convrter
are ideal
 The equivalent series resistance of the
capacitance & stray capacitances is
negligible
 The capacitor Co at output terminal and
inductor Lm at input terminal are
typically large.

8. Voltage & current waveforms of the converter

9. MODES OF OPERATION
MODE-I ( between ωto & ωt1 )

10. MODE-II (Between ωt1 & ωt2)

11. MODE –III (Between ωt2 & ωt3)

12. MODE-IV (Between ωt3 & ωt4)

13. MODE-V (Between ωt4 & ωt5)

14. MODE-VI (Between ωt5 & 2π)

15. Conclusion
 The efficiency is given of the converter is
given by ŋ=(Vo*Io)/(Vin*Iin)
 If we consider
 Input to converter is 15V
 Switching frequency fs=70kHz
 Resonant frequency fo=86kHz
 Duty cycle k=0.357 , the output Voltage
Vo=18.0V and power is 32.4W
The efficiency we get here is 97.3%. Hence the
proposed novel single-switch resonant power
converter has great potential for use in
renewable energy generation applications.

16. THANK YOU