Liao Tian-fa
Intelligent Automation & Soft Computing, Vol.25, No.4, pp. 695-704, 2019, DOI:10.31209/2019.100000073
Abstract With the spreading of Photovoltaic (PV) grid-connected system, grid-connected
reactive-load compensation and harmonic control is becoming a research focus.
Unipolar and bipolar modulations are widely used in active power filter of PV
grid-connected inverter. Unipolar modulation is good at harmonic, ripples and
efficiency control, while bipolar modulation is good at grid-connected current
control. A comprehensive comparison between the aforementioned modulation
strategies in aspects of basic switching action, effects on operation mode,
current harmonics，efficiency, is done in this paper. Base on it, a hybrid
modulation strategy with the fusion of the unipolar and bipolar modulation is
proposed in this paper. Numerical… More >
Login
Register
