Abstract
Using energy storage (ES) in grid-connected photovoltaic (PV) generators is an efficient solution to deliver regulated power to the grid despite fluctuations in solar irradiance. The article analyses a single-phase grid-connected PV generators with ES, where the ES has a low voltage, namely without too many series-connected storing cells. The PV generator consists of three subsystems connected by a common dc-link capacitor: a PV unit, an ES unit, and an inverter. Furthermore, in the proposed solution, the inverter does not switch for a significant portion of the grid period, resulting in lower switching losses. The single-phase inverter discontinuous operation implies the need of an appropriate control strategy in the boost dc-dc converter of the ES unit. The proposed control employs an augmented state model that accounts for resonant variables. The proposed PV solution with low-voltage ES, including its control, is validated in a 350-VA experimental prototype to verify the novel approach.
| Original language | English |
|---|---|
| Pages (from-to) | 2997-3007 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 72 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2025 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 1982-2012 IEEE.
ASJC Scopus Subject Areas
- Control and Systems Engineering
- Electrical and Electronic Engineering
Keywords
- Battery energy storage system (BESS)
- discontinuous modulation
- linear matrix inequality (LMI) control
- maximum power point tracking (MPPT)
- photovoltaic (PV) system
- resonant control
