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

• Autorzy: Wu W. , Huang M. , Blaabjerg F.

Identyfikatory

DOI

10.2478/aee-2014-0005

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

LCL filter; LLCL-filter; efficiency power loss; modulation; single-phase grid-tied inverter

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2014
• Tom: Vol. 63, nr 1
• Strony: 63--79
• Opis fizyczny: Bibliogr. 23 poz., rys., wykr., wz.

Twórcy

autor

Wu W.

• Department of Electrical and Electronic Engineering, Shanghai Maritime University, Shanghai, China

autor

Huang M.

• Department of Electrical and Electronic Engineering, Shanghai Maritime University, Shanghai, China
• Department of Energy Technology, Aalborg University, Aalborg, Demark

autor

Blaabjerg F.

• Department of Energy Technology, Aalborg University, Aalborg, Demark

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