Resumo:
The concern for the environment and the
actual economic situation result in the growing search for
renewable means of energy generation. However, renewable
sources of electrical energy interfaced by inverters do
not have the same inertia and damping that exists in
synchronous machines from conventional energy systems,
such as thermal. The lack of inertia resulting from the
high level penetration of renewable energies can lead to
increased frequency excursions and, consequently, to system
instability. Among the various studies aimed at reducing
this unwanted effect, there is a proposal to emulate inertia
through inverters and their control [1]. In this study, it
is suggested the development and application of a control
strategy to emulate inertia through a grid-following inverter.
After simulations in a system with solar photovoltaic energy
generation connected to a grid with infinite bus, results show
the effectiveness of inverter control with virtual inertia.
