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Inventi Impact - Embedded Systems

Articles

  • Inventi:ees/17858/15
    DIGITAL PULSE WIDTH MODULATION (DPWM) GENERATION USING 8051 FOR CONTROLLING OF DC DC BUCK CONVERTER
    Gajanan Shirnewar*, Susovon Samanta, Shrinivas Shirnewar

    This paper presents a successful implementation of a novel method to generate digital pulse width modulation (DPWM) signals using 8051 to control DC DC buck converter and assesses experimentally its behaviour for variable supply voltages and step load resistance change. The method for generation of PWM signals to control the DC DC buck converter was developed by studying various methods existed earlier. The experiment was performed using a low cost micro-controller AT89C51RD2 in order to verify the design performance for different conditions. The results were obtained using a self-designed DC DC buck converter, by changing the input voltage and also changing the load resistance and the corresponding waveforms of DPWM signal, output voltage, obtained from simulation are also plotted. The software written for 8051 controller shows very interesting tracking features and is able to keep the output voltage at the desired level even after step load change and input voltage variation. Using the developed algorithm for controller one can set a desired voltage level at the output by doing small change in the program, hence this method also provides flexibility for the DC DC buck converter and can be applied to any DC DC buck converter without doing any changes. It was observed that the developed novel method for DPWM generation yields better results than other methods. Hence it can be used for different application.

    How to Cite this Article
    Gajanan Shirnewar, Susovon Samanta, Shrinivas Shirnewar. Digital Pulse Width Modulation (DPWM) Generation Using 8051 for controlling of DC DC Buck Converter. Inventi Impact: Embedded Systems, 2016(2):65-68, 2016.
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