Journal
IETE JOURNAL OF RESEARCH
Volume 66, Issue 1, Pages 103-114Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03772063.2018.1466734
Keywords
Unipolar modulation; Bipolar modulation; Total harmonic distortion; Current ripple; LC filter; Linear load; Non-linear load
Funding
- University Grant Commission (UGC), India
- UGC SAP-DRS-II project
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This paper describes the power quality issues at the output of an inverter. The role of a filter and its design aspects at the output of a single-phase inverter in order to minimize the different harmonic content associated with various modulation schemes is illustrated. The relationship of the cut-off frequency of a second-order filter along with the switching frequency as well as on the type of modulation is established. The procedure to choose the values of L and C components of LC filter to reduce the overall THD following the IEEE std.1547 is also illustrated. The performance of the total system for different linear and non-linear loading conditions along with variations in input voltage and output loading is evaluated. The entire system and its performance is verified using MATLAB-based simulink models and satisfactory results are obtained.
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