Abstract –In this paper, proposes an analysis and design of a high efficiency boost-inverter with battery storage in fuel cell. When low-voltage unregulated fuel cell (FC) output is conditioned to generate AC power, two stages are required. The boost-inverter topology that achieves both boosting and inversion functions in a single-stage is used to develop an FC-based energy system which offers ...

This paper presents a steady-state comparison of two methods that generate an orthogonal voltage system for single-phase Phase-Locked Loop (PLL) structure: widely accepted one based on Second Order Generalized Integrator (SOGI) and new All-Pass Filter (APF) with Lattice structure. Both are very attractive because their simple digital implementation, low computational load good performance under...

In this paper introduces a PV based generation system interlinked with shunt active power filter (SAPF) to provide the effective reactive compensation and mitigation of harmonics. The SAPF is comprised photovoltaic system, DC link capacitor voltage source inverter (VSI). current harmonics caused by nonlinear loads can be greatly reduced help filter. To generate reference regulation SAPF, artifi...

The power calculation is an indispensable element in droop-controlled inverters because the bandwidth of measured has a direct impact on controller performance. This paper proposes fast and accurate algorithm based combined Second Order Generalized Integrator (SOGI) filters stationary coordinates for three-phase system, which takes into consideration use nonlinear loads. scheme formed by two-st...

Abstract: Distributed renewable energy systems play an increasing role in today’s energy paradigm. Thus, intensive research activities have been centered on improving the performance of renewable energy systems, including photovoltaic (PV) systems, which should be of multiple-functionality. That is, the PV systems should be more intelligent in the consideration of grid stability, reliability, a...

Phase-locked loops (PLL) are widely used in the synchronization of grid interfaced power converters. One solution is based on orthogonal signal generation (OSG), which requires frequency information for their appropriate operation. This article developed a new to achieve PLL function single-phase interconnection but eradicate additional feedback traditional architecture all-pass filter (APF-PLL...

Synchronization is the key part to ensure high performance of grid-connected systems. Phase-locked loop (PLL) one most popular synchronizations due its simple implementation and robustness under certain grid variations. Particularly, in single-phase applications, PLL based on second-order generalized integrator (SOGI-PLL) widely used because structure, filtering ability frequency adaptability. ...

The two-sample phase locked loop (2S PLL) in single-phase digitally controlled grid-connected power converters provide synchronization with a minimal computational burden. However, the distortion of grid voltage deteriorates performance 2S quadrature signal generator. To solve this issue, article introduces harmonic filtering (HF) structure based on observers input for fundamental and selected ...

As the penetration of renewable energy increases year by year, risk high-frequency oscillation instability when a three-phase, four-wire split capacitor inverter (TFSCI) is connected to grid with complementary capacitors in weak grids. Compared three-wire inverter, TFSCI has an additional zero-sequence current loop. To improve accuracy modeling and stability analysis, effect loop needs be consi...