An integrated rule-based power management and dynamic feed-forward low voltage ride through scheme for a grid-connected hybrid energy system

2020 ◽  
Vol 12 (5) ◽  
pp. 056303
Author(s):  
Amit Kumar Roy ◽  
Gyan Ranjan Biswal ◽  
Prasenjit Basak
Keyword(s):  
Power Management ◽  
Low Voltage ◽  
Energy System ◽  
Rule Based ◽  
Hybrid Energy System ◽  
Feed Forward ◽  
Hybrid Energy ◽  
Low Voltage Ride Through

scholarly journals Modeling, Control and Power Management Strategy of a Grid connected Hybrid Energy System

2018 ◽  
Vol 8 (3) ◽  
pp. 1345 ◽  
Author(s):  
Sujit Kumar Bhuyan ◽  
Prakash Kumar Hota ◽  
Bhagabat Panda
Keyword(s):  
Fuel Cell ◽  
Power Management ◽  
Storage Tank ◽  
Power Flow ◽  
Management Strategies ◽  
Energy System ◽  
Pv System ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Load Demand

This paper presents the detailed modeling of various components of a grid connected hybrid energy system (HES) consisting of a photovoltaic (PV) system, a solid oxide fuel cell (SOFC), an electrolyzer and a hydrogen storage tank with a power flow controller. Also, a valve controlled by the proposed controller decides how much amount of fuel is consumed by fuel cell according to the load demand. In this paper fuel cell is used instead of battery bank because fuel cell is free from pollution. The control and power management strategies are also developed. When the PV power is sufficient then it can fulfill the load demand as well as feeds the extra power to the electrolyzer. By using the electrolyzer, the hydrogen is generated from the water and stored in storage tank and this hydrogen act as a fuel to SOFC. If the availability of the power from the PV system cannot fulfill the load demand, then the fuel cell fulfills the required load demand. The SOFC takes required amount of hydrogen as fuel, which is controlled by the PID controller through a valve. Effectiveness of this technology is verified by the help of computer simulations in MATLAB/SIMULINK environment under various loading conditions and promising results are obtained.

Experimental investigation of power management and control of a PV/wind/fuel cell/battery hybrid energy system microgrid

2020 ◽  
Vol 45 (53) ◽  
pp. 29110-29122 ◽  
Author(s):  
Boualam Benlahbib ◽  
Noureddine Bouarroudj ◽  
Saad Mekhilef ◽  
Dahbi Abdeldjalil ◽  
Thameur Abdelkrim ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Fuel Cell ◽  
Power Management ◽  
Energy System ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
And Control

scholarly journals A Fuzzy Based Improved Control Strategy of Dynamic Voltage Restorer for Low Voltage and High Voltage Ride Through Compensation for Variable Speed Hybrid Energy 

2021 ◽  
Author(s):  
Uthra R ◽  
Suchitra D
Keyword(s):  
Hybrid System ◽  
High Voltage ◽  
Low Voltage ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Dynamic Voltage Restorer ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Voltage Restorer ◽  
Dynamic Voltage

Abstract In present-day power generation systems, the integration of many renewable energy sources creating more sustainable hybrid energy network can be witnessed. The Hybrid energy system regulates the escalation in the cost of the energy that are linked with currently established energy resources. One such predominantly used Hybrid energy system happens to be Wind / Photo Voltaic (PV) integrated system which is a viable alternative to meet the rising energy demands.Fault Ride Through (FRT) is one of the cardinal essentialities that is perceived as an indispensable grid code because the effect of faults may propagate to a larger geographical area if FRT is not achieved. In a Hybrid system the ability of the generator to remain connected at the time of short electric fault like voltage dip is identified as Low Voltage Ride Through (LVRT) and voltage swell is known as High Voltage Ride Through (HVRT). When fault occurs at the point of the grid, LVRT or HVRT depending on the fault has to be determined and a pertinent compensation should be carried out. This paper proposes a compensation technique based on Dynamic Voltage Restorer (DVR) employing fuzzy controller for LVRT and HVRT in hybrid systems. The disparityin the voltage at PCC is traced and is used to inject the necessary deficit voltage in case of sag or suppress the excessive voltage in case of swell in the hybrid system by means of DVR. This compensation in turn enables the parameters like DC link and stator voltage to stay within the admissible limits in the event of fault at the point of grid.

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