Keywords
transistor resonant voltage inverter
phase-locked loop (PLL) system
How to Cite
Abstract
Phase-locked loop (PLL) systems in control circuits of resonant voltage inverters of high-frequency induction heating installations are used for getting the maximal active power in the load and minimal power losses in converter transistors under a wide range of load settings. In the paper, it is shown study results of the Q-factor influence of the voltage inverter’s load series resonant circuit of the induction heating installations on the accuracy of the PLL system. Under low values of the Q-factor, which is, for instance, equal 2, switching current may increase up to 30 % in comparison to that under high Q-factors; this, respectively, increases power losses under transistors switching. To provide optimal modes of their switching it is necessary to lower the transistor control pulse delay time depending on the Q-factor of the inverter load circuit. References 8, figures 7.
References
Lucía O., Maussion P., Dede E.J. Induction heating technology and its applications: past developments, current technology, and future challenges. IEEE Trans. on Industrial Electronics. 2014. Vol. 61.5. Pp. 2509−2520.
S. Goldman. Loop Classifications in Phase-Locked Loops: Engineering Handbook for Integrated Circuits, Norwood, MA 02062: Artech House Publishers, 2007. p. 7.
G.M. Segura. Induction heating converter’s design, control and modeling applied to continuous wire. Ph.D. dissertation, Dept. d’Enginyeria Electrica, Univ. Politecnica de Catalunya, Barcelona, Spaine, 2012.
Hutsaliuk V.Ya., Herasymenko P.Yu., Sliesarevskyi I.O. Phase-locked loop systems voltage resonant transistor converter induction heating equipment. Tekhnichna Elektrodynamika. 2016. No 1. Pp. 37−43. (Rus)
Herasymenko P., Hutsaliuk V., Pavlovskyi V., Yurchenko O. A Software Phase-Locked Loop of Control System of a Series-Resonant Voltage-Source Inverter for Induction Heating Equipment. Proc. IEEE First Ukraine Conference on Electrical and Computer Engineering. Kiev. May-Jun. 2017. Pp. 384–389.
Berkovych E.I., Ivenskii G.V., Yoffe Yu.S., Matchak A.T., Morgun V.V. High frequency thyristor converters. Leningrad: Energiia, 1973. 200 p. (Rus)
Tikhomirov I.S., Vasil`ev A.S., Patanov D.A. Adaptive self-excitation algorithm for transistor voltage in-verter in induction heating equipment. Zhurnal nauchnykh publikaczij aspirantov i doktorantov. 2008. No 5. Pp. 188−192. (Rus)
H. Fujita, H. Akagi. Pulse-density-modulated power control of a 4 kW, 450 kHz voltage-source inverter for induction melting application. IEEE Trans. Ind. Appl. 1996. Vol. 32. No 2. Pp. 279–286.
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Copyright (c) 2019 V.YA. Hutsaliuk, I.S. Zubkov