Digital controller design for full-bridge Boost Rectifier using Singular Perturbation method based on pseudo continuous approach with power factor correction

2016 ◽  
Author(s):  
Y. Mchaouar ◽  
A. Abouloifa ◽  
I. Lachkar ◽  
M. Fettach
Keyword(s):  
Singular Perturbation ◽  
Perturbation Method ◽  
Power Factor ◽  
Controller Design ◽  
Power Factor Correction ◽  
Digital Controller ◽  
Singular Perturbation Method ◽  
Continuous Approach ◽  
Boost Rectifier

scholarly journals Singular Perturbation Method for Boundary Value and Optimal Problems to Power Factor Correction Converter Application

2020 ◽  
Vol 11 ◽  
pp. 42-53
Author(s):  
G. Kishor Babu
Keyword(s):  
Boundary Layer ◽  
Singular Perturbation ◽  
Perturbation Method ◽  
Power Factor ◽  
Initial Conditions ◽  
Power Factor Correction ◽  
Boundary Value ◽  
Singular Perturbation Method ◽  
Time Scale Separation ◽  
Small Parameters

A linear discrete stable control system is considered. The Power Factor Correction (PFC) converter to allow independent control of current and voltage. It converter are fast and slow states to inheres sty present small parameters inductor and capacitor its computes stiffness and to include switching ripple effects. As an alternative a Singular Perturbation Method (SPM) is presented Boundary Value Problem (BVP) and Optimal Problem. It is applied to two state switching power converters to provide rigorous justification of\ the time scale separation. It is modeled as a one parameter singularly perturbed system. SPM consists of an outer series solution and one boundary layer correction (BLC) solution. A boundary layer correction is required to recover the initial conditions lost in the process of degeneration and to improve the solution. SPM is carried out up to second-order approximate solution for the PFC converter model for BVP and optimal control problems. The results are compared with the exact solution (between with and without parameters). The results substantiate the application.

Singular Perturbation Method Applied to Power Factor Correction Converter Application

2021 ◽  
Vol 16 ◽  
pp. 396-403
Author(s):  
Kishor Babu Gunti ◽  
Sree Krishnarayalu Movva
Keyword(s):  
Boundary Layer ◽  
Singular Perturbation ◽  
Perturbation Method ◽  
Power Factor ◽  
Initial Conditions ◽  
Power Factor Correction ◽  
Singular Perturbation Method ◽  
Switching Power ◽  
Time Scale Separation ◽  
Small Parameters

A linear discrete stable control system is considered. The Power Factor Correction (PFC) converter to allow independent control of current and voltage. It converter are fast and slow states to inheres sty present small parameters inductor and capacitor its computes stiffness and to include switching ripple effects. As an alternative a Singular Perturbation Method (SPM) is presented Initial Value Problem (IVP) and Boundary Value Problem (BVP). It is applied to two state switching power converters to provide rigorous justification of the time scale separation. It is modeled as a one parameter singularly perturbed system. SPM consists of an outer series solution and one boundary layer correction (BLC) solution. A boundary layer correction is required to recover the initial conditions lost in the process of degeneration and to improve the solution. SPM is carried out up to second-order approximate solution for the PFC converter model for IVP and BVP. The results are compared with the exact solution (between with and without parameters). The results substantiate the application.

Teleoperation Systems Design Using Singular Perturbation Method and Sliding Mode Controllers

2014 ◽  
Vol 136 (5) ◽  
Author(s):  
Soheil Ganjefar ◽  
Mohammad Hadi Sarajchi ◽  
S. Mahmoud Hoseini
Keyword(s):  
Time Delay ◽  
Singular Perturbation ◽  
Perturbation Method ◽  
Controller Design ◽  
Sliding Mode ◽  
Optimal Operation ◽  
Sliding Mode Controller ◽  
Singular Perturbation Method ◽  
Teleoperation System ◽  
Teleoperation Systems

The purpose of designing a controller for a teleoperation system is to achieve stability and optimal operation in the presence of factors such as time-delay, system disturbance, and modeling errors. This paper proposes a new method of controller design based on singular perturbation for the bilateral teleoperation of robots through Internet. This study provides sliding mode controller based on the singular perturbation model which is robust on time-varying delay. Using singular perturbation method, the teleoperation system is decomposed into fast and slow subsystems. Teleoperation systems usually have complex dynamic and controller designing is difficult for them. This method is a novel step toward reducing order modeling. In this paper, teleoperation system dynamic was decomposed into two states, slave and error (different from master and slave) and a sliding mode controller was designed for each state. Despite the communication channel in teleoperation systems, it is difficult and almost impossible to design controller based on full-order system. Therefore, many researchers have focused on controller design based on master and slave subsystems. This study shows that the singular perturbation is a proper method for controller design in master or slave, based on slave and error subsystem models with the effect on the total system. It is intended here to reduce the tracking error between the master and the slave. For different values of time-delay, the positions of master-slave were compared. This comparison was also applied for master and slave control signals based on singular perturbation. In all schemes, the effectiveness of the system was shown through simulations and comparisons between the various schemes were presented.

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