Work

Dynamic Average-Value Modeling and Stability of Shipboard PV–Battery Converters with Curve-Scanning Global MPPT

Year: 2025

Type: article

Abstract: Maritime power systems must reduce fuel use and emissions while improving resilience. We study a shipboard PV–battery subsystem interfaced with a DC–DC converter running maximum power point tracking (MPPT) and curve-scanning GMPPT to manage partial shading. Dynamic average-value models capture irradiance steps and show GMPPT sustains operation near the global MPP without local peak trapping. We compare converter options—conventional single-port stages, high-gain bidirectional dual-PWM converters, and three-level three-port topologies—provide sizing rules for passives, and note soft-switching in order to limit loss. A Fourier framework links the switching ripple to power quality metrics: as irradiance falls, the current THD rises while the PCC voltage distortion remains constant on a stiff bus. We make the loss relation explicit via Irms2R scaling with THDi and propose a simple reactive power policy, assigning VAR ranges to active power bins. For AC-coupled cases, a hybrid EMT plus transient stability workflow estimates ride-through margins and critical clearing times, providing a practical path from modeling to monitoring.

Source: Electricity

DOI: 10.3390/electricity6040066

Authors: Andrei Darius Deliu, Emil Cazacu, Florențiu Deliu, Ciprian Popa, Nicolae Silviu Popa, Mircea Preda

Institutions: Universitatea Națională de Știință și Tehnologie Politehnica București, Mircea cel Batran Naval Academy, Military Technical Academy

Language: English

Topic: Photovoltaic System Optimization Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure, Climate action

Open Access status: gold

Estimated APC paid: $1,207