Abstract:
|
The droop control uses the local average values
of the active and reactive power components for sharing the
load power demand among inverters in parallel. In this paper,
a method that uses a virtual quadrature reference frame to
calculate the average power components injected by singlephase
inverters is presented. This method improves the dynamic
response of the power sharing control, as well as, completely
eliminates the double frequency oscillation over the voltage and
frequency synthesized by the inverter in steady state. Moreover,
it is able to deal with nonlinear loads since the harmonic
components that appears in the instantaneous power are filtered.
The method is compared with the classical method, which is
based on low pass filters, through simulation carried out in
Matlab/Simulink and experimental results. |