scholarly journals A 100kW Three-Phase Power Inverter for Hybrid Energy Storage System Based on Batteries and Supercapacitors

2019 ◽  
Vol 8 (6) ◽  
pp. 4571-4574
Keyword(s):  
Energy Storage ◽  
Modular Design ◽  
Reactive Power ◽  
Storage System ◽  
Energy Storage System ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System ◽  
Three Phase ◽  
Simulation Results

The paper represents the design of a 100 kW three-phase network inverter for a hybrid energy storage system based on batteries and supercapacitors. The presented design is based on fast IGBT switches, provides their effective cooling and can be performed in a modular design. The inverter is designed for parallel operation with the network in bidirectional mode and island mode. The control algorithm allows for direct control of active and reactive power. The obtained simulation model and simulation results are used to calculate the inverter parameters and debug the control system. Simulation results show good performance and effectiveness of the invertor and the algorithm

scholarly journals Nyström Minimum Kernel Risk-Sensitive Loss Based Seamless Control of Grid-Tied PV-Hybrid Energy Storage System

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1365
Author(s):  
Mukul Chankaya ◽  
Ikhlaq Hussain ◽  
Aijaz Ahmad ◽  
Irfan Khan ◽  
S.M. Muyeen
Keyword(s):  
Energy Storage ◽  
Reactive Power ◽  
Storage System ◽  
Energy Storage System ◽  
Voltage Source ◽  
Grid Voltage ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System ◽  
Risk Sensitive

This paper presents Nyström minimum kernel risk-sensitive loss (NysMKRSL) based control of a three-phase four-wire grid-tied dual-stage PV-hybrid energy storage system, under varying conditions such as irradiation variation, unbalanced load, and abnormal grid voltage. The Voltage Source Converter (VSC) control enables the system to perform multifunctional operations such as reactive power compensation, load balancing, power balancing, and harmonics elimination while maintaining Unity Power Factor (UPF). The proposed VSC control delivers more accurate weights with fewer oscillations, hence reducing overall losses and providing better stability to the system. The seamless control with the Hybrid Energy Storage System (HESS) facilitates the system’s grid-tied and isolated operation. The HESS includes the battery, fuel cell, and ultra-capacitor to accomplish the peak shaving, managing the disturbances of sudden and prolonged nature occurring due to load unbalancing and abnormal grid voltage. The DC link voltage is regulated by tuning the PI controller gains utilizing the Salp Swarm Optimization (SSO) algorithm to stabilize the system with minimum deviation from the reference voltage, during various simulated dynamic conditions. The optimized DC bus control generates the accurate loss component of current, which further enhances the performance of the proposed VSC control. The presented system was simulated in the MATLAB 2016a environment and performed satisfactorily as per IEEE 519 standards.

scholarly journals An Enhanced Emulated Inertia Control for Grid-Connected PV Systems with HESS in a Weak Grid

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1721
Author(s):  
Ratnam Kamala Sarojini ◽  
Palanisamy Kaliannan ◽  
Yuvaraja Teekaraman ◽  
Srete Nikolovski ◽  
Hamid Reza Baghaee
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Rate Of Change ◽  
System Control ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System ◽  
Simulation Results ◽  
Inertia Control

The role of renewable energy sources in the power grid is increasing tremendously. However, power electronic converters are used to incorporate RES into the grid without inertia. This article recommends an improved emulated inertia control approach focused on the frequency deviation and rate of change of frequency to enhance the inertia of a power system. The required inertial power calculated from emulated inertia control is delivered through hybrid energy storage systems equipped with a proper hybrid energy storage system control. The fast-varying power calculated from emulated inertia control is linked to super-capacitor. Simultaneously, the battery handles the slow varying power by regulating the DC bus voltage proportionate to the frequency variations. Further, the stability of the emulated inertia control and hybrid energy storage system controller is validated by Bode plots. The simulation results verified the correctness of the proposed emulated inertia control and hybrid energy storage system control. The real-time simulation results with the help of OPAL-RT are presented to validate the proposed method’s feasibility.

scholarly journals An Active Voltage Coordinate Control Strategy of DFIG-Based Wind Farm with Hybrid Energy Storage System

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3060
Author(s):  
Yuyan Song ◽  
Yuhong Wang ◽  
Qi Zeng ◽  
Jianquan Liao ◽  
Zongsheng Zheng ◽  
...  
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Wind Farm ◽  
Reactive Power ◽  
Storage System ◽  
Energy Storage System ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System ◽  
Coordinate Control

In a power system with wind farms, the point of common coupling (PCC) usually suffers from voltage instability under large wind speed variations and the load impact. Using the internal converter of a doubly fed induction generator (DFIG)-based wind turbine to provide voltage support auxiliary service is an effective scheme to suppress the voltage fluctuation at PCC. To satisfy the reactive power demand of the connected grid, an active voltage coordinate control strategy with the hybrid energy storage system of the wind farm is proposed. The dynamic reactive power balance model is established to show the interaction between the reactive power limitation of the wind farm and the reactive power compensation demand of the grid. This indicates the initial conditions of the active voltage coordinate control strategy. According to the critical operating point and the operation state of the DFIG, the active and reactive power coordinate control strategy composed of active ω-β coordinate control and active β control is proposed to enhance the reactive power support capability and stabilize the grid voltage. To compensate the active power shortage, an auxiliary control strategy based on the hybrid energy storage system is introduced. The simulation results show that the proposed strategy can suppress the voltage fluctuation effectively and make full use of primary energy.

Seamless control of grid-tied PV-Hybrid Energy Storage System

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mukul Chankaya ◽  
Ikhlaq Hussain ◽  
Aijaz Ahmad
Keyword(s):  
Energy Storage ◽  
Reactive Power ◽  
Storage System ◽  
Energy Storage System ◽  
Current Control ◽  
System Stability ◽  
Dynamic Conditions ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System

Abstract This paper describes the normalized maximum correntropy criteria (NMCC) based seamless control of three-phase four-wire voltage source converter (VSC) for a grid-tied PV-Hybrid energy storage system (HESS). The micro-grid can operate in both islanded and grid-tied mode with seamless control. The seamless control facilitates the VSC control transition from grid current control (GCC) during grid-tied mode to voltage control during grid-isolated mode and back to GCC control with grid-resynchronized mode. The seamless control ensures the system stability and security of the personnel with reduces transients on the grid and load side of the system during the VSC control transition. The VSC is designed to fulfill the multi-objective including power quality enhancement, reactive power compensation, load balancing during unity power factor (UPF) operation. The VSC maintains the system stability during diverse dynamic conditions, inducing disturbances on grid side, load side and PV side of the system, i.e., Irradiation variation, unbalanced load, abnormal grid voltage, intentional islanding, specified power mode and grid-resynchronization. The hybrid energy storage system (HESS) consisting of lead-acid battery and ultra-capacitor (UC) further enhances the stability and disturbances handling capability of the grid-tied PV system. The functioning of the proposed system is found adequate as per IEEE 519 standards during steady and induced dynamic conditions.

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