resonant converter
DESCRIPTION
Resonant ConverterTRANSCRIPT
Jyotiprakash Lenka
Dept. of Electrical &Electronics
Engineering
Regd No-1021288015
4/13/20131
Introduction
Classification
Conclusion
Reference
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Resonant inverters are electrical inverter based
on resonant current oscillation. It is known as DC to
DC Converter or Dc to Ac PWM inverter.
Main function is to reduce switching losses of the
devices(MOSFET&IGBT).
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The Resonant Converter broadly Classified into Eight types. Those are:-
1. Series Resonant inverter
2. Parallel Resonant inverter
3. Class E Resonant Converter
4. Class E Resonant Rectifier
5. Zero Voltage Switching(ZVS) Resonant Converter
6. Zero Current Switching(ZCS) Resonant Converter
7. Two Quadrant ZVS Resonant Converter
8. Resonant dc-link inverter
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It is Based on resonant current oscillation.
Switching device are placed in series with Load.
Thyristor are work in switching device.
This type of inverter produces an approximately
sinusoidal wave form at a high Frequency ,ranging
from 200Hz to 100KHz.
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Circuit dig. of series Resonant Converter
Equivalent circuit dig. Waveform 4/13/2013 6
Parallel Resonant inverter is dual of series resonant
inverter
Current is continuously controlled , that gives better
short circuit protection under fault condition
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It has low switching losses , yielding a high efficiency
of more than 95%.
Used in low power application & high frequency
electric lamp.
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Circuit Dig. of class E Resonant inverter & Wave Form
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Class E Resonant Rectifier is based on the principle of
Zero Voltage Switching(ZVS) .
The diode turn off at zero voltage.
A high frequency diode rectifier suffers from
disadvantage that is switching losses , harmonic
content.
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The ZVS Resonant Converter turn on & turn off at zero
voltage.
Output voltage control can be achieved by varying the frequency & operates with constant off time control .
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Zero Current Switching(ZCS) Resonant Converter turn
On & turn off at zero current.
This converter can operate at higher range frequency
that is 1MHz to 2Mhz.
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The DC link inverter is similar to the PWM inverter .
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It is used for high frequency application.
ZCS&ZVS becomes popular and they can turn ON
&turn OFF at zero voltage¤t and also eliminate
switching losses.
In dc-link inverters , a resonant circuit is connected
between the inverter & DC supply.
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1. Muhammad H. Rashid ,”Power Electronics”
,Pearson publication,5th Edition, Ch-8, pg-352 to 404
2. P.S. Bimbhra,”Power Electronics”, Khanna
Publication,3rd Edition, Ch -11, pg-572 to 581
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