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Emmanuel Oyekanlu
2019 Journal of Energy - Energija  
To determine suitability of using powerline communication (PLC) to monitor stability condition on the 380 V dc microgrid, impact of distortion caused by microgrid constant power loads (CPL) on signals  ...  In this paper, Takagi-Sugeno fuzzy inference method is used to establish a Lyapunov stability candidate for a 380 V ring bus dc microgrid modeled with Matlab.  ...  The stability domain of the dc microgrid system is lated for a data center microgrid with a 380 V dc bus supplying data center d server acting as CPLs.  ... 
doi:10.37798/20196811 fatcat:u5n2sgbkazghrl3flquculm3km

DC Bus Stabilization of Li-Ion Battery Based Energy Storage for a Hydrogen/Solar Power Plant for Autonomous Network Applications

Phatiphat Thounthong, Suwat Sikkabut, Pongsiri Mungporn, Luigi Piegari, Babak Nahid-Mobarakeh, Serge Pierfederici, Bernard Davat
2015 IEEE transactions on industry applications  
Linear proportional-integral (PI) and nonlinear flatness-based controllers for dc bus stabilization for power plants are compared.  ...  load cycles, and the nonlinear differential flatness-based control was determined to provide improved dc bus regulation relative to a classical linear PI control method.  ...  Fig. 1 . 1 Proposed power converter structure of a power plant supplied by a PV, an FC, and a Li-ion battery. Fig. 2 . 2 DC bus energy stabilization based on linear PI control.  ... 
doi:10.1109/tia.2015.2388853 fatcat:pto2ea5fjbajdjghu5kwf6vsni

Adaptive Backstepping Sliding Mode Control for Boost Converter With Constant Power Load

Jiarong Wu, Yimin Lu
2019 IEEE Access  
The negative impedance characteristics of a constant power load (CPL) can easily lead to the instability of the DC bus voltage.  ...  To improve the stability of the DC bus voltage, an adaptive backstepping sliding mode control strategy for a boost converter with the CPL in DC microgrid is proposed.  ...  When the load is controlled to output a constant power, it behaves as a constant power load (CPL).  ... 
doi:10.1109/access.2019.2910936 fatcat:q2akg4sz55aqzhc7apl7ief33a

Analysis of Differential Flatness-Based Control for a Fuel Cell Hybrid Power Source

Phatiphat Thounthong, Serge Pierfederici, Bernard Davat
2010 IEEE transactions on energy conversion  
This paper presents an innovative control law for distributed dc generation supplied by a fuel cell (FC) (main source) and supercapacitor (auxiliary source).  ...  This kind of system is a multiconverter structure and exhibits nonlinear behavior.  ...  Lekapat, who is in-charge of the process of the Franco-Thai on Higher Education and Research Joint Project year: 2009-2010.  ... 
doi:10.1109/tec.2010.2053037 fatcat:w7m45pfw7jad3i3m63kx4t7zte

A third-order sliding-mode controller for DC/DC converters with constant power loads

Yue Zhao, Wei Qiao
2011 2011 IEEE Industry Applications Society Annual Meeting  
In a MVDC shipboard power system, DCIDC converters are commonly employed to supply constant power to electric loads.  ...  The SMC 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.  ...  Fig. 1 shows a DC/DC converter, whose output voltage is regulated to supply a constant-power load, in a shipboard DC-ZED module. Consequently, the input power of the DCfDC converter is constant.  ... 
doi:10.1109/ias.2011.6074347 dblp:conf/iasam/ZhaoQ11 fatcat:7mrpbflrrfavbeimc5zumfdvdq

Research on Large-Signal Stability of DC Microgrid Based on Droop Control

Haifeng Liang, Yuxi Huang, Hao Sun, Zhiqian Liu
2019 Energies  
Ensuring the large signal stability of the DC microgrid is the premise of the safe operation of the DC microgrid, but the research on the large-signal stability of microgrids with multiple droop control  ...  On this basis, a nonlinear droop control method was proposed to improve the anti-interference ability of the system.  ...  Therefore, the large signal stability criterion of Equation (A6) has one more positive term than the simplified criterion (20) , so the maximum allowable value of P CPL is larger.  ... 
doi:10.3390/en12163186 fatcat:7nsrprhjijftxowr7vlsdmhfxi

Nonlinear Control for Isolated DC MicroGrids
Contrôle non linéaire pour les DC MicroGrids isolées

Filipe Perez, Gilney Damm, Francoise Lamnabhi-Lagarrigue, Paulo Ribeiro
2019 ARIMA  
This paper proposes a distributed nonlinear control strategy for an isolated MicroGrid composed of renewables and different timescale storage systems to supply a DC load.  ...  The standalone operation of renew-ables represents a challenge for operation and reliability, therefore the DC MicroGrid concept is seen as a powerful solution allowing renewables integration and reliable  ...  The DC load is supplied at constant level of voltage V * C11 according to grid standards.  ... 
doi:10.46298/arima.5356 fatcat:xlrylwquuzg2ph7xqsjya4ef3u

Application of Superconducting Fault Current Limiter as a Virtual Inertia for DC Distribution Systems

Doaa M. Yehia, Ibrahim B. M. Taha
2021 IEEE Access  
For simulation purposes, the DC bus was modeled as a DC source. The stability of the DC system was investigated for sudden variations in the supply voltage as well as for sudden load changes.  ...  So, based on this concept, the load was modeled as a current-dependent nonlinear resistor, whose current is varying to keep its consumed power constant. III.  ... 
doi:10.1109/access.2021.3115989 fatcat:fdfiybwwkve3rkxs6lydwa3k3u

Design of Nonlinear Backstepping Double-Integral Sliding Mode Controllers to Stabilize the DC-Bus Voltage for DC–DC Converters Feeding CPLs

Subarto Kumar Ghosh, Tushar Kanti Roy, Md. Abu Hanif Pramanik, Md. Apel Mahmud
2021 Energies  
This paper proposes a composite nonlinear controller combining backstepping and double-integral sliding mode controllers for DCDC boost converter (DDBC) feeding by constant power loads (CPLs) to improve  ...  the DC-bus voltage stability under large disturbances in DC distribution systems.  ...  Parameters Description Value V in Supply voltage 55 V V bus Main DC-bus voltage 110 V P CPL Nominal power in constant power load 2 kW r b Parasitic resistance of an inductor 2 mΩ L b Inductance  ... 
doi:10.3390/en14206753 fatcat:tcvktnqe75eihpzhhtwobnlfty

One-Cycle Zero-Integral-Error Current Control for Shunt Active Power Filters

Salvador Orts-Grau, Pedro Balaguer-Herrero, Jose Carlos Alfonso-Gil, Camilo I. Martínez-Márquez, Francisco J. Gimeno-Sales, Salvador Seguí-Chilet
2020 Electronics  
Its application in a three-leg four-wire shunt active power filter is presented, including a stability analysis considering the switching pattern selection.  ...  The one-cycle current control technique is a nonlinear technique based on cycle-by-cycle calculation of the ON time of the converter switches for the next switching period.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/electronics9122008 fatcat:3ybpsxbysfenlgfoxt3c2sojta

Designing and Modeling of Control Strategies Based on Multi-Objective Optimization for a Permanent-Magnet Synchronous Generator Wind Turbine: A Study Based on the Grid Errors and Wind Speed

Ehsan Ganji, Mehdi Mahdavian, Iman Eshaghpour, Mojtaba Janghorban
2019 Advances in Science and Technology Research Journal  
Additionally, a common DC bus and a fully controlled inverter were designed.  ...  Since the power demand and the produced power of the turbine are variable and indistinguishable in each moment, a depletion load is also placed in the system.  ...  Since the load power demand was variable and the amount of power produced by the turbine was unpredictable, a depletion load was used through a chopper in the DC-bus strategy.  ... 
doi:10.12913/22998624/111706 fatcat:rl4cg4itq5avvg5j5qhspywm5y

Power Flow Control and Network Stability in an All-Electric Ship

Marco Cupelli, Ferdinanda Ponci, Giorgio Sulligoi, Andrea Vicenzutti, Chris S. Edrington, Touria El-Mezyani, Antonello Monti
2015 Proceedings of the IEEE  
This paper compares the approaches to power flow control and network stability of an integrated ship power system through reducing the dynamics of large loads to operate in compatibility with the dynamics  ...  The overall goal of guaranteeing a secure operation of the power system has brought researchers to consider two main approaches: reducing the dynamics of the large load to operate in a range of dynamics  ...  Introduction to Constant Power Load Connected to a DC Bus In an MVDC AES, the electrical subsystems are connected to a dc bus. Those subsystems will be interfaced with power converters.  ... 
doi:10.1109/jproc.2015.2496789 fatcat:3low7qoblvez7l7nlfapg5trze

A Stability Preserving Criterion for the Management of DC Microgrids Supplied by a Floating Bus

Daniele Bosich, Andrea Vicenzutti, Samuele Grillo, Giorgio Sulligoi
2018 Applied Sciences  
, behaving as constant power loads (CPLs).  ...  the system stability even in the presence of a low bus voltage.  ...  This section discusses the stability degradation that can possibly arise in a floating DC bus microgrid supplying a CPL.  ... 
doi:10.3390/app8112102 fatcat:keobbabcg5hjzp5lfrz3xjfdee

Stability Analysis of DC Distribution Systems with Droop-Based Charge Sharing on Energy Storage Devices

Despoina Makrygiorgou, Antonio Alexandridis
2017 Energies  
Since many loads in modern distribution systems are connected through power converters, both constant power loads and simple resistive loads are considered in parallel.  ...  To this end, a complete nonlinear DC-grid model has been deployed that includes different DC-DERs, two controlled parallel battery branches, and different varying DC loads.  ...  Figure 5 . 5 (a) The net input supply at each distributed energy resource (DER) bus and the current at the constant power load bus; (b) Details of the current changes of the constant power load at the  ... 
doi:10.3390/en10040433 fatcat:2pzkfitl55aczl4vqngibl2zpm

Hybrid energy storage system control analogous to power quality enhancement operation of interlinking converters

Salman Hajiaghasi, Ahmad Salemnia, Mohsen Hamzeh
2021 International Journal of Power Electronics and Drive Systems (IJPEDS)  
The main advantages of the proposed strategy are to reduce DGs power fluctuations, precise DC bus voltage regulation for generation and load disturbances, improved grid power quality under nonlinear load  ...  Increasing nonlinear loads and power electronic converters lead to various power quality issues in microgrids (MGs).  ...  The hybrid system consists of a PV generation system, a battery-SC HESS, dc load, an ILC that transfers power from dc bus to ac bus or vice versa, LC filter, upstream power grid, and the ac load.  ... 
doi:10.11591/ijece.v11i2.pp909-918 fatcat:5nku4g6qgrffdm7np7ibq5oqhe
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