Digital controller design for buck converter with the reduction of phase transition and output voltage oscillation under transient state

2008 ◽  
Author(s):  
Ye-Then Chang ◽  
Yen-Shin Lai
Keyword(s):  
Phase Transition ◽  
Output Voltage ◽  
Controller Design ◽  
Transient State ◽  
Buck Converter ◽  
Digital Controller ◽  
Voltage Oscillation

Performance Analysis of Controller Design for DC-DC Buck Converter Using Linear and Non Linear Technique

2015 ◽  
Vol 719-720 ◽  
pp. 417-425 ◽  
Author(s):  
Husan Ali ◽  
Xian Cheng Zheng ◽  
Shahbaz Khan ◽  
Waseem Abbas ◽  
Dawar Awan
Keyword(s):  
Output Voltage ◽  
Control Method ◽  
Controller Design ◽  
Sliding Mode ◽  
Input Voltage ◽  
Buck Converter ◽  
Linear Control ◽  
Control Technique ◽  
Control Techniques ◽  
Non Linear

The switched mode dc-dc converters are some of the most widely used power electronics circuits because of high conversion efficiency and flexible output voltage. Many methods have been developed for the control of dc-dc converters. This paper deals with design of controller for dc-dc buck converter using various control techniques. The first two control techniques are based on classical or linear control methods i.e. PI and PID control, while the other two control technique are based on non linear control method i.e. Sliding Mode Control (SMC) and Sliding Mode Proportional Integral Derivative Control (SMC-PID). The output voltage and the inductor current of the applied control techniques are analyzed and compared in transient and steady state region. Also the robustness of the buck converter system is tested for load changes and input voltage variations. Matlab/Simulink is used for the simulations. The detailed simulation results are presented, which compare the performance of the designed controllers for various cases. The results show that the non linear control for DC/DC Buck converter proves to be more robust than linear control especially when dynamic tests are applied.

scholarly journals Robust Digital Control for Interleaved PFC Boost Converter Using Approximate 2DOF

1970 ◽  
Vol 8 (2) ◽  
pp. 187-194
Author(s):  
Yuki Satake ◽  
Hiroyuki Furuya ◽  
Yohei Mochizuki ◽  
Yuji Fukaishi ◽  
Kohji Higuchi ◽  
...  
Keyword(s):  
Power Factor ◽  
Output Voltage ◽  
Sudden Change ◽  
Experimental Studies ◽  
Input Voltage ◽  
Boost Converter ◽  
Buck Converter ◽  
Digital Controller ◽  
Step Response ◽  
Duty Ratio

In recent years, improving of power factor and reducing harmonic distortion in electrical instruments are needed. In general, a current conduction mode boost converter is used for active PFC (Power Factor Correction). In a PFC boost converter, if a duty ratio, a load resistance and an input voltage are changed, the dynamic characteristics are varied greatly. This is the prime reason of difficulty of controlling the interleaved PFC boost converter. In this paper, a robust digital controller for suppressing the change of step response characteristics and variation of output voltage at a DC-DC buck converter load sudden change with high power factor and low harmonic is proposed. Experimental studies using a micro-processor for controller demonstrate that the proposed digital controller is effective to improve power factor and to suppress output voltage variation.

scholarly journals Analysis and Design for Output Voltage Regulation in Constant-on-Time-Controlled Fly-Buck Converter

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1886
Author(s):  
Younghoon Cho ◽  
Paul Jang
Keyword(s):  
Output Voltage ◽  
Voltage Regulation ◽  
Design Guidelines ◽  
Buck Converter ◽  
Design Guideline ◽  
Analysis And Design ◽  
Flyback Converter ◽  
Auxiliary Power ◽  
Primary Output ◽  
Output Capacitor

Fly-buck converter is a multi-output converter with the structure of a synchronous buck converter structure on the primary side and a flyback converter structure on the secondary side, and can be utilized in various applications due to its many advantages. In terms of control, the primary side of the fly-buck converter has the same structure as a synchronous buck converter, allowing the constant-on-time (COT) control to be applied to the fly-buck converter. However, due to the inherent energy transfer principle, the primary-side output voltage regulation of COT controlled fly-buck converters may be poor, which can deteriorate the overall converter performance. Therefore, the primary output capacitor must be carefully designed to improve the voltage regulation characteristics. In this paper, a theoretical analysis of the output voltage regulation in COT controlled fly-buck converter is conducted, and based on this, a design guideline for the primary output capacitor considering the output voltage regulation is presented. The validity of the analysis and design guidelines was verified using a 5 W prototype of the COT controlled fly-buck converter for telecommunication auxiliary power supply.

Single and three phase moving average filter PLLs: Digital controller design recipe

2014 ◽  
Vol 116 ◽  
pp. 276-283 ◽  
Author(s):  
Naji Rajai Nasri Ama ◽  
Wilson Komatsu ◽  
Lourenco Matakas Junior
Keyword(s):  
Controller Design ◽  
Moving Average ◽  
Digital Controller ◽  
Moving Average Filter ◽  
Three Phase ◽  
Average Filter

Digital Controller Design for Half-Car Active Suspension System with Using Singular Perturbation Theory

2011 ◽  
Vol 403-408 ◽  
pp. 4800-4805 ◽  
Author(s):  
A. R. Paarya ◽  
H. Zarabadipour
Keyword(s):  
Perturbation Theory ◽  
Controller Design ◽  
Suspension System ◽  
Digital Controller ◽  
Singular Perturbation Theory ◽  
Vehicle Suspension ◽  
Car Model ◽  
Perturbed Systems ◽  
Simulation Results ◽  
Vehicle Suspension System

In this paper the digital controller design for vehicle suspension system, based on a half-car model using singular perturbed systems is considered. This strategy is based on the slow and fast subsystems controller design. The simulation results show them favorable performance of the controller and achieve fast and good response.

Robust self-tuning regressive adaptive controller design for a DC–DC BUCK converter

Measurement ◽  
2021 ◽  
Vol 174 ◽  
pp. 109071
Author(s):  
S. Morteza Ghamari ◽  
Hasan Mollaee ◽  
Fatemeh Khavari
Keyword(s):  
Controller Design ◽  
Adaptive Controller ◽  
Buck Converter ◽  
Self Tuning
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