Single Source Multi-Frequency AC-AC Converter for Induction Cooking Applications

Pradeep Vishnuram, Suchitra Dayalan, Sudhakar Babu Thanikanti, Karthik Balasubramanian and Benedetto Nastasi
Additional contact information
Pradeep Vishnuram: Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Chennai 603203, India
Suchitra Dayalan: Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Chennai 603203, India
Sudhakar Babu Thanikanti: Department of Electrical and Electronics Engineering, Chaitanya Bharathi Institute of Technology (CBIT), Hyderabad 500075, India
Karthik Balasubramanian: Design and Engineering (Electrical), Offshore Technology Development Private Limited, Keppel Offshore and Marine Limited, Singapore 629353, Singapore
Benedetto Nastasi: Department of Planning, Design, and Technology of Architecture, Sapienza University of Rome, Via Flaminia 72, 00196 Rome, Italy

Energies, 2021, vol. 14, issue 16, 1-21

Abstract: In recent years, induction heating (IH) applications aided by electronic power control have gained significance. Particularly, for cooking applications, an appropriate control technique is required to feed power from a single source to multiple loads with minimum switching losses. Additionally, when multiple loads are used, it requires independent control and operation for each of the loads. The main idea of this work is to develop a single-stage AC-AC converter topology to feed power to multiple loads independently with a single source, with a reduced number of switching devices and with minimum switching losses. The proposed topology uses a frequency bifurcation concept to feed power to multiple loads by placing the transmitting coil and work coil at a distance of 3 cm. The source is resonated at a 25 kHz switching frequency, with the designed bifurcated frequencies of 20 kHz and 33 kHz. The resonant capacitors are appropriately chosen to operate at those frequencies. For real-time applications, simultaneous and independent power control are inevitable in multi load-fed IH applications. This is achieved through a pulse density modulation scheme with minimum switching losses. The simulation of the proposed system is performed in MATLAB/Simulink, and also the 1 kW system is validated using a PIC16F877A microcontroller. The real-time thermal variation in the load is also recorded using a FLIR thermal imager. The experimental and simulation results are observed, and the obtained efficiency of the system is plotted for various duty cycles of pulse density modulation control.

Keywords: frequency bifurcation; induction heating; independent power control; pulse density modulation; single source multi-frequency (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/16/4799/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/16/4799/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:16:p:4799-:d:609946

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().