Proceedings ArticleDOI
Voltage regulation and stabilization of DC/DC buck converter under constant power loading
Suresh Singh,Deepak Fulwani +1 more
- pp 1-6
TLDR
In this article, a sliding mode controller is proposed which ensures supply of constant power demanded by the CPL and tight voltage regulation (error less than 0.1 V) of the output voltage.Abstract:
The low and medium voltage renewable energy based dc distribution systems are catching increased attention world-wide due to their inherent benefits over ac systems. Higher efficiency, simple control, more suitable for integration of the sources producing dc power, are some of the main benefits of the dc systems. However, these systems are prone to serious stability issues caused by the constant power load (CPL) nature of the point-of-load converters (POLs). This paper deals with the stabilization and voltage regulation of dc/dc buck converter feeding a combination of the constant voltage resistive load (CVL) and CPL in a dc micro-grid application. A sliding mode controller is proposed which ensures supply of constant power demanded by the CPL and tight voltage regulation (error less than 0.1 V) of the output voltage. The effectiveness of the controller is validated through simulation results under different operating conditions. It is shown that the controller is robust to the large changes in supply voltage and the load.read more
Citations
More filters
Journal ArticleDOI
Constant power loads and their effects in DC distributed power systems: A review
TL;DR: In this paper, the authors present state-of-the-art and research needs in dc distributed power systems in one article, and a review of stability criteria used to study the stability of dc power systems are reviewed with their merits and limitations.
Journal ArticleDOI
Constant power loads (CPL) with microgrids: problem definition, stability analysis and compensation techniques
Mohammed Kh. Al-Nussairi,Ramazan Bayindir,Padmanaban Sanjeevikumar,Lucian Mihet-Popa,Pierluigi Siano +4 more
TL;DR: In this paper, the authors provide a comprehensive review of the major concepts associated with the μgrid, such as constant power load (CPL), incremental negative resistance or impedance (INR/I), and its dynamic behaviors on the μ-grid, and power system distribution.
Journal ArticleDOI
A Novel Nonlinear Deep Reinforcement Learning Controller for DC–DC Power Buck Converters
TL;DR: An intelligent proportional-integral based on sliding mode (SM) observer to mitigate the destructive impedance instabilities of nonideal CPLs with time-varying nature in the ultralocal model sense is addressed.
Journal ArticleDOI
Mitigation of destabilising effect of CPLs in island DC micro-grid using non-linear control
TL;DR: It is found that the proposed control scheme ensures desired operation of the DC micro-grid under various operating modes and maintains system stability with CPL under variations in the primary resource and load demand.
Proceedings ArticleDOI
Fuzzy logic controller for Dc-Dc buck converter with constant power load
TL;DR: The fuzzy logic controller is design to ensure the stabilization of buck converter under change the constant power load and tight voltage regulation after transient response by choosing the proper duty cycle for each cycle.
References
More filters
Book
Sliding Modes and their Application in Variable Structure Systems
TL;DR: An electric dynamically operated storage element comprises two energy stores and circuitry is provided for applying periodically repeating phase clock pulses simultaneously to the energy stores through the charging circuits.
Journal ArticleDOI
Constant power loads and negative impedance instability in automotive systems: definition, modeling, stability, and control of power electronic converters and motor drives
TL;DR: Sliding-mode and feedback linearization techniques along with large-signal phase plane analysis are presented as methods to analyze, control, and stabilize automotive converters/systems operating with CPLs.
Book
Control systems of variable structure
TL;DR: This book is referred to read because it is an inspiring book to give you more chance to get experiences and also thoughts and this is not only this control systems of variable structure.
Journal ArticleDOI
Dynamic Behavior and Stabilization of DC Microgrids With Instantaneous Constant-Power Loads
TL;DR: In this article, stability issues in dc microgrids with instantaneous constant-power loads (CPLs) are explored and mitigation strategies such as load shedding, adding resistive loads, filters, or energy storage directly connected to the main bus, and control methods are investigated.
Journal ArticleDOI
A Sliding-Mode Duty-Ratio Controller for DC/DC Buck Converters With Constant Power Loads
Yue Zhao,Wei Qiao,Daihyun Ha +2 more
TL;DR: In this paper, a slidingmode duty-ratio controller (SMDC) is proposed for dc/dc buck converters with constant power loads, which is able to stabilize the dc power systems over the entire operating range in the presence of significant variations in the load power and input voltage.