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Ziegler-Nichols tuned PID controller's performances usually are not acceptable for applications requiring precise control. In this paper an improved discrete auto-tuning PID scheme is developed for DC-DC converters where large load changes are expected or the need for fast response time. The algorithm developed in this paper is used for the tuning discrete PID controller to obtain its parameters with...
Proportional Integral Derivative (PID) controller is the most preferable controller in industries that does not require precise analytical model of the system to be controlled. This paper presents a design and implementation of PID (Proportional-Integral-Derivative) controller based on FPGA (Field-Programmable Gate Arrays) for low voltage synchronous buck Converter. Matlab/Simulink environment is...
Multilevel inverters are commonly modulated by using multicarrier pulse width modulation techniques such as phase-shifted multicarrier modulation and level-shifted multicarrier modulation. However, level-shifted multicarrier modulation technique produces the best harmonic performance than the phase-shifted multicarrier modulation technique. But it is having apparent disadvantages of unequal device...
This paper presents design, modeling and simulation of a low-power digitally controlled synchronous rectifier (SR) buck converter. Due importance is given in the model to the effect of non-linear parameters in low voltage converters, such as equivalent series resistance ESL of the inductor, ESR of capacitor and RDS(on) of MOSFET switches. A digital PID controller is design adopting direct digital...
Modeling and simulation generally form an integral part of design process. The simulation tools are increasingly important in the development of new system and their optimum design. This paper presents design and simple method of modeling DC-DC converter using MATLAB/Simulink. The nonlinear parameters such as equivalent series resistance of the inductor and capacitor and the threshold voltage of MOSFET...
This paper describes a new digital control method to enhance the dynamic performance of a dc-dc converter used in Plasma Display Panels (PDP). A simple digital PID compensator with duty ratio feed-forward control is proposed to minimize the output voltage variation for continuously changing load current. The duty ratio feed-forward is calculated using a noise-free load current information, which is...
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