abstract

• This paper deals with a battery energy storage system (BESS) in only one of its multiple operating modes, that is when the BESS is charging the battery bank and with the focus on the control scheme design for the BESS input stage, which is a three-phase LCL-filter PWM rectifier. The rectifier’s main requirements comprise output voltage regulation, power factor control, and low input current harmonic distortion, even in the presence of input voltage variations. Typically, these objectives are modeled by using a dq model with its corresponding two-loop controller architecture, including an outer voltage loop and a current internal loop. This paper outlines an alternative approach to tackle the problem by using not only an input–output map linearization controller, with the aim of a single-loop current control, but also by avoiding the dq modeling. In this case, the voltage is indirectly controlled by computing the current references based on the converter power balance. The mathematical model of the three-phase LCL-filter PWM rectifier is defined based on the delta connection of the filter, which accomplishes the requirements of a 100 kW BESS module. Extensive simulation results are included to confirm the performance of the proposed closed-loop control in practical applications. © 2019 by the authors.

authors

• Camargo E.
• Mora D.
• Núñez Gutiérrez Ciro Alberto
• Segundo J.
• Visairo Cruz Nancy

publication date

• 2019-01-01

funding provided via

• 207164  Grant

published in

• Energies  Journal

keywords

• Battery energy storage system (BESS); LCL filter; Nonlinear control; PWM rectifier; Tracking problem Closed loop control systems; Controllers; Energy storage; Pulse width modulation; Rectifying circuits; Secondary batteries; Voltage regulators; Battery energy storage systems; LCL filters; Non linear control; PWM rectifier; Tracking problem; Electric rectifiers

Digital Object Identifier (DOI)

• 10.3390/en12214093

start page

end page

volume

• 12

issue

• 21