Multi MOSFET Series Resonant Inverter for Enhancing the Efficiency of Induction Cooktops
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 4
Abstract
One of the most threatening problems that we witness is the increasing cost and dearth of cooking gas. An alternate method is to use Induction heating system, where electricity is used for the generation of heat. Resonant inverters featuring soft switching in which the inductor vessel system is a part of resonant tank are now used in domestic induction heating application due to their high efficiency and high power density. In this paper, the design of an improved efficiency and low profile resonant inverter for induction heating system is presented. The proposed inverter is based on a multi Metal Oxide Semiconductor Field Effect Transistor (MOSFET) cell implementation with reduced equivalent ON state resistance per chip area. By using automotive grade MOSFET devices, an inverter capable of delivering up to 4 kW has been built, reducing conduction losses against the classical Insulated Gate Bipolar Transistor (IGBT) based inverter. In addition to this, the reduced switching times of MOSFET devices decrease switching losses, further increasing the conversion efficiency. The main design challenges including the device selection, gate drive circuit, and cooling have been addressed. As a conclusion, a low profile design without fan and heat sink is obtained, which significantly improves state of the art technology in terms of efficiency and power density.
Authors and Affiliations
Nimitha M, Sniya Sunil, Dr. Devi V
Keywords
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