Type of Document	Dissertation
Author	Grajales, Liliana
URN	etd-06062008-155400
Title	Analysis and design of a 500 kHz series resonant inverter for induction heating applications
Degree	PhD
Department	Electrical Engineering
Advisory Committee	Advisor Name Title Lee, Fred C. Committee Chair Borojevich, Dushan Committee Member Johnson, Lee W. Committee Member Jovanovic, Milan M. Committee Member Stephenson, F. William Committee Member
Keywords	DC analysis induction heating series-resonant small-signal analysis
Date of Defense	1995-11-06
Availability	restricted
Abstract The steady state model and analysis of a phase-shift controlled series resonant inverter (PSC-SRl) is presented. This steady state model includes the evaluation of the zero-voltage switching (ZVS) condition and the determination of the ZVS operating region. Based upon this analysis a frequency control strategy that minimizes circulating energies is proposed. Also, a methodology to design the power stage components, and to predict the duty ratio and the operating frequency range is presented using a PSC-SRl design example operating at 500 kHz and 10 kW. In addition, a novel and simple frequency control circuit that implements the proposed frequency control strategy is provided. Besides, the analysis of the PSC-SRl complete power stage and two control-loop system (frequency control and duty ratio control) is given. Furthermore, the small-signal model and the compensation schemes for each of the control loops is presented. The analytical predictions are compared with experimental data measured from a 500 kHz, 10 kW laboratory prototype and conclusions are drawn.
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