All-digital DSP-based phase-locked loop for induction heating applications
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Phase-locked loop schemes are widely used in induction heating applications for controlling the converters. Most authors use total or partial analog solutions to implement the control schemes, which are less sturdy and flexible to changes than digital schemes. In this paper, an all-digital DSP-based PLL is presented. It has fewer variations due to the tolerances of the analog components and provides great flexibility in a wide range of conditions just by reprogramming. Moreover, it allows changing dynamically some of the parameters during the process and opens up the possibility of more complex control algorithms. The all-digital PLL has been simulated and experimentally tested, demonstrating the feasibility and reliability of this type of control in a real industrial equipment
CitacióMartín-Segura, G. [et al.]. All-digital DSP-based phase-locked loop for induction heating applications. "European transactions on electrical power", 2012, p. 1-12.
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