Further improvement of a transformerless, voltage-boosting inverter for AC modules

MPPT Scheme for a PV-Fed Single-Phase Single-Stage Grid-Connected Inverter Operating in CCM With Only One Current Sensor

“…Hysteresis control ensures that the inductor current, [14], [15], [20], and (d) control scheme. "A" and "B" are the PV array output current and buck-boost inductor current sensors.…”

“…Some of these configurations employ pulse width modulation techniques for generating a sinusoidal inverter output current and operate in discontinuous conduction mode (DCM) [9]- [14], [23]. Other schemes operate in continuous conduction mode (CCM) or currentcontrolled mode [15]- [22].…”

A Single-Stage Single-Phase Transformer-Less Doubly Grounded Grid-Connected PV Interface

“…Kusakawa et al [21] have presented an inverter topology [ Fig. 2(d)] based on the buck-boost principle for an ac module, with a low power rating of around 50 W. Unlike other configurations, this configuration uses only one PV string.…”

“…However, during positive [17], [18], [20]. (d)-(e) Configurations with single PV source [21], [22]. (f) Proposed topology.…”

Pulse Energy Modulation in a Three-Switch Buck-Boost Inverter for Distributed Generation Systems

“…Typical two-stage buck-boost inverters can handle a wide variation of input dc voltage, but their complicated structure leads to a costly solution for small DG systems. Many single-stage buck-boost inverters [3][4][5][6] have been proposed to accomplish the voltage regulation and dc-ac conversion in a simplified form for small DG applications.…”