Year-end Sale % OFF 
Abstract
In a dc grid, the inherent inertial support from the dc capacitors is too small to resist step changes or random fluctuations from the intermittent power resources, which results in lower dc voltage quality. In this paper, an adaptive droop control (ADC) strategy is proposed to achieve an increased inertia from the droop controlled converter. The adaptable droop coefficient according to the dc voltage variation enables fast swing of the droop curve, so that the converter can provide inertial power for the dc grid like synchronous generators in ac grids. The design of the ADC including the calculation and limitation of the adaptable droop coefficient is analyzed in detail. The small-signal analysis of the dc grid with ADC is provided to identify its stability issue. Experimental tests on a controller hardware-in-the-loop platform of a low-voltage (LV) dc grid are carried out to validate the proposed method. In this LV dc grid, the proposed ADC is implemented on the energy storage system which provides inertial support to improve the dc voltage quality under different power fluctuations, and smooths the power transmitted to ac grid.
Accepted Version (
Free)
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
