Multi mosfet-based series resonant inverter for improved efficiency and power density induction heating applications To Get this projects Call : 9566355386 / 99625 88976 Visit : www.lemenizinfotech.com / www.ieeemaster.com Mail : projects@lemenizinfotech.com

1. Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi
Statue, Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
Multi-MOSFET-Based Series Resonant Inverter for
Improved Efficiency and Power Density Induction
Heating Applications
ABSTRACT
DOMESTIC induction heating (IH) has become the
technology of choice of many users due to its improved
properties in terms of efficiency, quickness, safety,
cleanness, and accurate power control. Advances in power
electronics, digital control, and magnetic component design
have allowed designing reliable products with improved
user performance. Unlike classical solutions, the pot is
directly heated by means of a varying magnetic field in the
range of the kilohertz, requiring a specific power electronic
converter. The main design constrains of this converter are
derived from the reduced enclosure, the limited cooling
capabilities, and the high output power levels,requiring the
use of high-efficiency and high power density converters.In
this paper,a high-efficiency and high power density
seriesresonant inverter is proposed that significantly
improves efficiency and reduces cooling requirements,
obtaining an implementation that does not require a heat
sink and fan.The proposed converter is based on the half-

2. Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi
Statue, Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
bridge topology,where each switching device is
implemented by means of a multi-MOSFET cell.
CONVENTIONAL METHOD
Classical IH solutions are based on two separated
stages: a rectifier plus a resonant inverter. First, a four-
diode full bridge rectifier is commonly used to rectify the
mains ac voltage. A small value dc-link capacitor is used to
ensure an input power factor close to 1. Thus, a high-ripple
dc-link voltage is used to supply an inverter stage.
Consequently, the switching devices must withstand higher
current levels, whereas the required filter stage is
minimized. Considering the typical output power level and
the operating frequency range, the half-bridge series
resonant inverter (HB-SRI) featuring insulated-gate bipolar
transistors (IGBTs) is commonly used for the domestic IH
applications.
PROPOSED METHOD
Resonant converters featuring soft switching are
commonly used in domestic induction heating applications
due to their high efficiency and high power density. In this
paper, the design and implementation procedure of an

3. Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi
Statue, Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
improved efficiency and low profile resonant inverter for
induction heating applications is presented.The proposed
converter is based on a multi-MOSFET cell
implementation, reducing the equivalent on-state resistance
perchip-area. By using automotive-grade MOSFET
devices, a converter capable of delivering up to 4 kW has
been built, reducing conduction losses against the classical
IGBT-based converter.In addition to this,the reduced
switching times of MOSFET devices decrease switching
losses, further increasing the conversion efficiency.The
proposed converter is based on the half-bridge topology,
where each switching device is implemented by means of a
multi-MOSFET cell.The series operation of power devices
has been successfully used in the past for other applications
either using IGBTs or MOSFETs.

4. Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi
Statue, Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
ADVANTAGES
o High conversion efficiency and power density.
o Reduced switching losses.
o Cooling requirements are reduced.
o Cost effective driver circuit.
APPLICATIONS
o Domestic induction heating application
o Arc welding
o Electronic ballast

5. Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi
Statue, Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
BLOCK DIAGRAM
Tools and software
 MPLAB – microcontroller programming.
 ORCAD – circuit layout.
 MATLAB/Simulink – Simulation.
INPUT AC
SUPPLY
BRIDGE
RECTIFIE
R
DC LINK
CAPACITOR
MULTI MOSFET
RESONANT
INVERTER
LOAD
MICRO
CONTROLLER
BUFFER
GATE
DRIVER
5V DC
12V DC