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Zajęcia projektowe bazą kształcenia innowacyjnego na Uniwersytecie w Aalborgu, Dania

100%

Blaabjerg F. , Pedersen J. K.

tom nr 1

16-18

Międzynarodowy program profesorski ufundowany przez firmę Danfoss na uniwersytecie w Aalborgu - nowy model współpracy uczelni z przemysłem

80%

Blaabjerg F. , Pedersen J. K. , Kaźmierkowski M. P.

tom nr 3

68-69

Efficiency comparison between the LLCL and LCL-filters based single-phase grid-tied inverters

80%

Wu W. , Huang M. , Blaabjerg F.

Archives of Electrical Engineering

2014

tom Vol. 63, nr 1

63-79

An LLCL-filter is becoming more attractive than an LCL-filter as the interface between the grid-tied inverter and the grid due to possibility of reducing the copper and the magnetic materials. The efficiency of the LLCL-filter based single-phase grid-tied inverter also excites interests for many applications. The operation of the switches of the VSI is various with different modulation methods, which lead to different efficiencies for such a single-phase grid-tied inverter system, and therefore important research has been carried out on the effect of the choice of PWM schemes. Then power losses and efficiencies of the LLCL-filter and the LCL-filter based single-phase grid-tied inverters are analyzed and compared under the discontinuous unipolar, the dual-buck and the bipolar modulations. Results show that the efficiency of LLCL-filter based inverter system is higher than the LCL- filter based independent on the modulation method adopted. Experiments on a 2 kW prototype are in good agreement with results of the theoretical analysis.