Photovoltaic inverter output power analysis

What is PV inverter efficiency?

For high-power applications, system efficiency is one of the most important factor to consider. The PV inverter efficiency is calculated as the ratio of the ac power delivered by the inverter to the dc power from the PV array. Many studies in the literature have been carried out to improve the efficiency of motor drive systems [19, 20].

Why does PV inverter output voltage contain high order harmonics?

According to the previous analysis, the increase of the PV inverter output power may cause PV output voltage to contain high order harmonics under the weak grid, which are mainly distributed near the resonance peak of output filter LCL of PV inverter.

What is a passive equivalent impedance network of PV inverter?

Based on impedance model of two-stage PV inverter in frequency domain, the passive equivalent impedance network of PV inverter connected to power grid is built.

What is a photovoltaic inverter?

With photovoltaic (PV) plants of today, inverter units form integral part of plant and serve as interface between direct current (DC) photovoltaic circuits and alternate current (AC) grid or autonomous systems to which these plants are connected.

Do PV inverters harmonic output affect distribution network irradiance?

Annapoorna Chidurala et al., 10 analyzed varying irradiance with the harmonic generated from PV inverters. The simulation results in low generations of PV system for a fundamental current showed significant increase in the current THD values. On the contrary, these PV inverters harmonic output can adversely affect the distribution network.

What is photovoltaic (PV) generation?

Photovoltaic (PV) generation is one of the widely applied forms of renewable power generation which converts the available free solar energy into usable electricity through the process of photovoltaic effect. The PV systems in power networks can be classified as standalone and grid connected based on their applications.