An optimal control strategy for dc bus voltage regulation in photovoltaic system with battery energy storage

Muhamad Zalani Daud, Azah Mohamed, Hannan M A

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper presents an evaluation of an optimal DC bus voltage regulation strategy for grid-connected photovoltaic (PV) system with battery energy storage (BES). The BES is connected to the PV system DC bus using a DC/DC buck-boost converter. The converter facilitates the BES power charge/discharge to compensate for the DC bus voltage deviation during severe disturbance conditions. In this way, the regulation of DC bus voltage of the PV/BES system can be enhanced as compared to the conventional regulation that is solely based on the voltage-sourced converter (VSC). For the grid side VSC (G-VSC), two control methods, namely, the voltage-mode and current-mode controls, are applied. For control parameter optimization, the simplex optimization technique is applied for the G-VSC voltage- and current-mode controls, including the BES DC/DC buck-boost converter controllers. A new set of optimized parameters are obtained for each of the power converters for comparison purposes. The PSCAD/EMTDC-based simulation case studies are presented to evaluate the performance of the proposed optimized control scheme in comparison to the conventional methods.

Original languageEnglish
Article number271087
JournalScientific World Journal
Volume2014
DOIs
Publication statusPublished - 2014

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photovoltaic system
Motor Vehicles
Voltage control
Energy storage
Electric potential
Power converters
bus
energy storage
battery
regulation
disturbance
Controllers
simulation

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Medicine(all)

Cite this

An optimal control strategy for dc bus voltage regulation in photovoltaic system with battery energy storage. / Daud, Muhamad Zalani; Mohamed, Azah; M A, Hannan.

In: Scientific World Journal, Vol. 2014, 271087, 2014.

Research output: Contribution to journalArticle

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