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In this paper a digital PID controller is designed for an H-bridge soft-switching boost converter. The digital PID controller is designed analytically using the discrete-time transfer function of the converter. Using this method, the PID controller gain range is obtained as a set of inequalities in two variables for a fixed third variable. By plotting the region enclosed by the inequalities the controller...
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...
This paper presents a novel prediction based digital control dc-dc converter. In this method, addition to the P-I-D control as the feedback control, the prediction based control is used as the feedfoward control. In the feedfoward control, the neural network based method is adopted. This works to improve the transient response very effectively when the load is changed quickly. As a result, the undershoot...
This paper described a digitally controlled Buck converter. In this converter, the compensator implements the classic linear PID control law by the fixed-point algorithm. A proposed verification method is performed in Simulink environment. The structure of low area and power cost Ring ADC and high resolution DPWM is also introduced, respectively. The consistent mathematic and Spice simulation result...
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...
The purpose of this paper is to present a new digital model control which detects multiple output values of multiple-output dc-dc converter. In this method, the P-I-D control and the static equation model are performed. The dynamic characteristics of digital control converter are improved as compared with the conventional one.
This article describes the design of an observer-based, robust, linear output feedback controller for the regulation, and output reference trajectory tracking tasks, in switched “buck” converter circuits with completely unknown, time-varying, resistive loads. The disturbance effects of the unknown load resistance are on-line estimated by means of a Generalized Proportional Integral (GPI) observer,...
The objective of this paper is to demonstrate a fully digital controller for interleaving DC/DC converter. In this paper, a new adaptive control method is proposed to improve the dynamic performance in rapid load current slew rate requirement. This control architecture is according to PID controller with Gain Scheduling architecture and based on pole-zero cancellation method to build the parameters...
In this paper, we aim at designing a simple but optimal PID controller for a Boost converter to gain a set of favorite characteristics that is a good transient as well as steady state responses and switching stability. That is done by means of a multi-objective optimization approach called Strength Pareto algorithm, which is based on Pareto Optimality concept used in Game theory literature. In the...
The purpose of this paper is to present a new digital control method of the forward type multiple-output dc-dc converter with both the P-I-D control and the static equation model. The dynamic characteristics of digital control dc-dc converter are improved as compared with the conventional one. As a result, it is seen that the forward type multiple-output dc-dc converter with a new digital control...
Output voltage of a DC/DC power converter is likely to be distorted if variable loads exist in the output terminal. Unlike the buck type converter case, the regulation problem of the boost (step-up) converter is particularly difficult because the system is non-minimum phase with respect to the output voltage to be regulated. This paper presents a simple adaptive control (SAC) approach to maintain...
This paper focuses on modeling, analysis and simulation of a 42V/14V dc/dc converter based architecture. This architecture is considered to be technically a viable solution for automotive dual-voltage power system for passenger car in the near further. An interleaved dc/dc converter system is chosen for the automotive converter topology due to its advantages regarding filter reduction, dynamic response,...
In this paper a PID-fuzzy controller is proposed in order to control of a Buck DC/DC converter. A fuzzy system is used to tune the PID controller gains in real time. This fuzzy system is constructed from a set of fuzzy IF-THEN rules that describe how to choose the PID gains under certain operation conditions. The simulation results are presented for line and load regulations, i.e. the effects of input...
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