Design and Implementation of a Power Supply for KNX Protocol

Year 2023, Volume: 3 Issue: 2, 90 - 96, 30.06.2023

Handan Solmaz Akar Erdem Akboy , Yılmaz Eyidoğan

https://doi.org/10.5152/tepes.2023.23010

https://izlik.org/JA64KJ62YS

Abstract

KNX is a widely used organization in the world that standardizes the open system communication protocol for smart home and building automation. KNX controls integrated functions such as heating, cooling, ventilation, lighting systems, audio and video services, security, and energy management in all types of residential, commercial, and industrial building structures. KNX power supply is designed to ensure the continuous operation of these automation systems by considering the number of devices connected to the system. According to the KNX standards, in devices that are compliant with these standards, the main current and communication signals required for the operation of the devices use the same line. Conventional power supplies cannot cope with these standards and therefore special power supplies are required. In this study, a high-frequency (100 kHz) and high-efficiency (minimum 85%) flyback converter-based power supply with 155–265 VAC input and 30 V 640 mA output values in accordance with KNX standards has been designed and implemented.

Keywords

DCM operation , flyback converter , KNX power supply

References

• 1. N. Kraus, M. Viertel, and O. Burgert, “Control of KNX devices over IEEE 11073 service-oriented device connectivity,” IEEE Conference on Industrial Cyberphysical Systems (ICPS), Vol. 1. IEEE Publications, Tampere, Finland, 2020, pp. 421–424.
• 2. K. Dzierzek, The Use of KNX/EIB to Control Devices in an Intelligent Home. Faculty of Mechanical Engineering-Technical University of Košice, Slovakia, 2013.
• 3. M. Ruta, F. Scioscia, E. Di Sciascio, and G. Loseto, “Semantic-based enhancement of ISO/IEC 14543–3 EIB/KNX standard for building automation,” IEEE Trans. Ind. Inform., vol. 7, no. 4, pp. 731–739, 2011.
• 4. I. V. Sita, and P. Dobra, “KNX building automations interaction with city resources management system,” Procedia Technol., vol. 12, pp. 212–219, 2014.
• 5. KNX Association, 9/2 Basic and System Components/Devices – Minimum Requirements – Standardised Solutions - Tests KNX System Conformance Testing, KNX Standards, 2022.
• 6. KNX Association, 4/1 KNX Hardware Requirements and Tests - Environmental, Safety, EMC Requirements, – General, KNX Standards, 2020.
• 7. KNX Association, KNX Standarts – The Basics.
• 8. M. Y. Toylan, and E. Cetin, “Design and application of a KNX-based home automation simulator for smart home system education,” Comput. Appl. Eng. Educ., vol. 27, no. 6, pp. 1465–1484, 2019.
• 9. H. S. AKAR, E. AKBOY, and Y. EYİDOĞAN, “Design and Implementation of a Power Supply for KNX Protocol,” ELECO 2022 Elektik-Elektronik ve Biyomedikal Mühendisliği Konferansı, ELECO2022, Bursa, Turkey, November 24-26., 2022, pp. 1-5.
• 10. N. Coruh, S. Urgun, and T. Erfidan, “Design and implementation of flyback converters,” 5th IEEE conference on industrial electronics and applications, Vol. 2010. IEEE Publications, Taichung, Taiwan, 2010, pp. 1189–1193.
• 11. C. Wang, S. Xu, S. Lu, and W. Sun, “A low-cost constant current control method for DCM and CCM in digitally controlled primary-side regulation flyback converter,” IEEE J. Emerg. Sel. Top. Power Electron., vol. 6, no. 3, pp. 1483–1494, 2017.
• 12. F. Gökçegöz, E. Akboy, and A. H. Hülya Obdan, “Analysis and design of a flyback converter for universal input and wide load ranges,” Electrica, vol. 21, no. 2, pp. 235–241, 2021.
• 13. A. A. Saliva, Design Guide for Off-line Fixed Frequency DCM Flyback Converter. Infineon Technologies North America (IFNa) Corp, Infenion Design Notes DN2013-01 V1.0, Vol. 16, 2013.
• 14. S. Howimanporn, and C. Bunlaksananusorn, “Performance comparison of continuous conduction mode (CCM) and discontinuous conduction mode (DCM) flyback converters,” The Fifth International Conference on Power Electronics and Drive Systems, Vol. 2. IEEE Publications, Singapore, 2003, pp. 1434–1438.
• 15. T. Zhan, Y. Zhang, J. Nie, Y. Zhang, and Z. Zhao, “A novel soft-switching boost converter with magnetically coupled resonant snubber,” IEEE Transactions on Power Electronics, vol. 29, no. 11, pp. 5680–5687.