Design of an interconnection and damping assignment‐passivity based control technique for energy management and damping improvement of a DC microgrid. Issue 11 (21st April 2020)

• Record Type: Journal Article
• Authors: Samanta, Soumya; Barman, Saumitra; Mishra, Jyoti Prakash; Roy, Prasanta; Roy, Binoy Krishna
• Is Part Of: IET generation, transmission & distribution. Volume 14:Issue 11(2020)
• Page Start: 2082
• Page End: 2091
• Publication Date: 2020-04-21
• Subjects: invertors -- power generation control -- damping -- power system stability -- DC‐DC power convertors -- distributed power generation -- voltage control -- Lyapunov methods -- electric current control -- renewable energy sources -- energy management systems -- power system interconnection -- stability criteria; interconnection and damping assignment‐passivity based control technique -- energy management -- damping improvement -- DC microgrid -- grid connected inverter -- DC–DC converters -- DC bus voltage -- current controller -- renewable power generators -- IDA–PBC control laws -- IDA–PBC technique -- energy function -- load demand -- Lyapunov stability criterion; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2019.1075
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : In this study, energy management and damping improvement of a DC microgrid are proposed by using an interconnection and damping assignment–passivity‐based control (IDA–PBC) technique. The control technique is applied for (i) the grid connected inverter and (ii) the DC–DC converters connected with fuel cell and battery of the DC microgrid to control the DC bus voltage. The IDA–PBC generates the control laws with the desired energy function for the current controller of the converters based on the generation from the renewable power generators and load demand. In addition, an integral action is added with the IDA–PBC control laws to reduce the steady‐state error in the DC bus voltage. The parameters of the IDA–PBC technique are tuned based on the state of charge of the battery and grid availability for a smooth transition between the operating modes and better energy management. It is proved that the derived energy function satisfies the Lyapunov stability criterion. Simulations are carried out in MATLAB/Simulink to test the performance of the proposed control technique. The results show that the proposed technique provides the desired damping and energy management.