Accepted author manuscript, 615 KB, PDF document
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
}
TY - GEN
T1 - A Hybrid Controller for Novel Cascaded DC-DC Boost Converters in Residential DC Microgrids
AU - Alharbi, Yousef
AU - Darwish, Ahmed
AU - Ma, Xiandong
PY - 2024/6/9
Y1 - 2024/6/9
N2 - This paper presents a performance analysis of a new cascaded boost converter for low voltage (LV) residential DC microgrid. Photovoltaic (PV) systems are getting high attention as a renewable energy resource for LV DC microgrid applications. Partial Shading (PS) is a serious issue in PV systems as it leads to a significant reduction in power generation. The conventional boost converter topology is usually employed to mitigate the mismatch issue between the PV arrays or modules caused by the PS problem. In some cases, the PV module is divided into three submodules (SMs) where a bypass diode is integrated with each SM to protect the PV module from the hot spot (HS) effect. The mismatch problem between the SMs inside a single PV module can result in a significant reduction in power generation caused by isolating the shaded SM from the PV system. However, isolating the SM from the PV system can mitigate the HS negative effect at the expense of losing the power of the shaded PV SM. This paper suggests a PV SM DC-DC cascaded boost converter to overcome the mismatch concern between the PV SM of a single PV module in the modern DC microgrid. It employed a Perturb and Observe (P&O) tracing algorithm with each PV SM to individually harvest the maximum available power. The study proposes an optimizedoperating strategy based on PV power generation, local demand, and battery state of charge (SOC) to enhance the reliability of the DC microgrid system.
AB - This paper presents a performance analysis of a new cascaded boost converter for low voltage (LV) residential DC microgrid. Photovoltaic (PV) systems are getting high attention as a renewable energy resource for LV DC microgrid applications. Partial Shading (PS) is a serious issue in PV systems as it leads to a significant reduction in power generation. The conventional boost converter topology is usually employed to mitigate the mismatch issue between the PV arrays or modules caused by the PS problem. In some cases, the PV module is divided into three submodules (SMs) where a bypass diode is integrated with each SM to protect the PV module from the hot spot (HS) effect. The mismatch problem between the SMs inside a single PV module can result in a significant reduction in power generation caused by isolating the shaded SM from the PV system. However, isolating the SM from the PV system can mitigate the HS negative effect at the expense of losing the power of the shaded PV SM. This paper suggests a PV SM DC-DC cascaded boost converter to overcome the mismatch concern between the PV SM of a single PV module in the modern DC microgrid. It employed a Perturb and Observe (P&O) tracing algorithm with each PV SM to individually harvest the maximum available power. The study proposes an optimizedoperating strategy based on PV power generation, local demand, and battery state of charge (SOC) to enhance the reliability of the DC microgrid system.
M3 - Conference contribution/Paper
BT - IEEE, The 29th International Conference on Automation and Computing (ICAC 2024)
ER -