నైరూప్య

MODELING OF PID CONTROLLER BASED SMPS USING FPGA

SHUBHANGI V. PATIL , TEJASHREE R. SHUKLA , PARESH J. SHAH

This paper presents a proportional integral derivative (PID) controller model for buck converter topology of switch mode power supply (SMPS). PID controller in terms of the settling time while exhibiting a greater degree of robustness regarding disturbance rejection represented by severe changes in static and dynamic loads. The controller is used to change the duty cycle of the converter and thereby, the voltage is regulated. The buck converter, P, PI and PID controller are modeled and are evaluated by computer simulations. It has been found that the transient performance and steady state performance is improved using PID controller. SMPS design can produce very compact and lightweight supplies. Power conversion efficiencies of SMPS are 70 & 80 %. Implementation of SMPS by using FPGA, it gives the better performance and faster transient response. Improves the steady state performance and transient response by using PID controller, it is possible to design stable, efficient and ruggedized SMPS which has faster transient response for dynamically switching loads. In SMPS the switching action means the series regulator element is either on or off and therefore little energy is dissipated as heat and very high efficiency levels can be achieved. As a result of the high efficiency and low levels of heat dissipation, the switch mode power supplies can be made more compact. Switch mode power supply technology can be sued to provide high efficiency voltage conversions in voltage step up or boost applications or step down buck applications.

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