for wide range of operating conditions and the result shows better convergence for both the techniques. However, the MPP obtained from NR technique is found to be more than the GS method under varying irradiance and temperature condition. In order to validate the feasibility of presented NR approach a HST60FXXXP, 250 W panel was experimentally tested under dynamic environmental conditions. The results of I-V and P-V characteristics obtained using estimated parameters from NR technique through simulation has good agreement with the experimental result. Thus, the results have shown that the maximum power output from the panel decreases as the solar irradiance decreases due to increase in shunt resistance of the panel.
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*Corresponding author: [email protected]
2
Energy Storage System in Microgrid
Md Waseem Ahmad* and Ravi Raushan
National Institute of Technology Karnataka, Surathkal, India
Abstract
The energy storage systems (ESS) integrated microgrid have grown attention and acceptance because it has power reliability and sustainable energy utilization capability. Several ESS has been introduced with significant characteristics such as performance, size, life cycle, charging/discharging, safety, reliability, capacity, and cost. This chapter comprehensively reviews the types of ESS technologies, configurations, classifications, features, energy conversion, life cycle, and advantages and disadvantages. Moreover, the power electronics converter interfacing the microgrid has also been briefly studied. The present review critically demonstrates the interfacing circuits of ESS to microgrids. The mathematical modeling of bidirectional DC-DC converter interfacing the ESS to DC microgrid is presented developed. Moreover, the modeling and control of VSI interfacing the BESS to a three-phase grid is also demonstrated. The simulation model for both systems is also developed in MATLAB-Simulink. A critical review of the obtained simulation results is presented to show the ability of the DC-DC converter and VSI system for charging the BESS and delivering the power to the microgrid as per the requirement assigned by the higher-level controller of the microgrid.
Keywords: Energy storage system, microgrid,
