Autonomous Power-Source Regulation in Series-Connected Low-Voltage Microinverters

Power electronics technologies for renewable energy sources

“…With the adoption of this configuration, only the efficiency of a given module would be affected, e.g., by the action of a shadow or due to dirt, maintaining the overall efficiency of the solar panel at higher values. This situation is also verified in the series microinverter configuration (Figure 3.17(b)), in which the efficiency of each module is obtained independently [64]. However, the interface with each solar PV module is now achieved with a dc-dc power converter, allowing to connect all modules in series.…”

Distributed Control and Advanced Modulation of Cascaded Photovoltaic-Battery Converter Systems

“…The interharmonic performance of all the above-mentioned methods were evaluated through either simulations or experimental tests. To avoid the high-bandwidth communication (HBC), various distributed and decentralized control methods have been developed for series-connected systems in the literature [20]- [24], [27]- [30], [37]- [40], [66]- [71]. However, only a few are specifically designed for series-PV-battery systems [37]- [42].…”

“…In prior-art research, many control methods have been developed to enhance the power flow management [21], [22], achieve a distributed control [24], [27]- [30], ensure a stable operation [25], [26], [31]- [33], and improve the reliability of the CHB converters 6 [34], [35]. However, most research has focused on the output power and current response, and more importantly, the same type of DC sources had been plugged into separate DC rails of the series system.…”