2018
DOI: 10.1109/tpel.2017.2778025
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Analysis and Modeling of Interharmonics From Grid-Connected Photovoltaic Systems

Abstract: The industry of solar photovoltaic (PV) energy and its application is still booming to enhance the sustainability of the society. When PV systems are connected to the grid, challenging issues should be addressed. One of the challenges is related to interharmonics in PV systems, especially with a large-scale adoption of PV systems. However, the origins of interharmonics remain unclear, although the impact of interhamonics has been reported in the literature. Thus, this paper explores the generation mechanisms o… Show more

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Cited by 95 publications
(68 citation statements)
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“…In general, harmonics are generated by inverters due to the pulse width modulation, nonideal switching behaviors of the power devices and also the interaction among different controllers [31]- [33]. When the inverter works at the gridconnected mode, the harmonic currents produced by the inverter will flow out into the low-impedance grid to produce only a very small amount of distortion in the PCC voltage.…”
Section: A Voltage Unbalance and Total Harmonic Distortion Methodsmentioning
confidence: 99%
“…In general, harmonics are generated by inverters due to the pulse width modulation, nonideal switching behaviors of the power devices and also the interaction among different controllers [31]- [33]. When the inverter works at the gridconnected mode, the harmonic currents produced by the inverter will flow out into the low-impedance grid to produce only a very small amount of distortion in the PCC voltage.…”
Section: A Voltage Unbalance and Total Harmonic Distortion Methodsmentioning
confidence: 99%
“…To address this issue, a model to predict the interharmonic characteristic in PV systems has been proposed in [8], where the results from the interharmonic model agree well with the field observation in [6]. It has been demonstrated in [8] that the interharmonic characteristic is strongly dependent on the MPPT algorithm parameters such as the perturbation step-size v step and the sampling rate f MPPT . As discussed in [8], the interharmonic emission can be effectively alleviated by reducing the sampling rate of the MPPT algorithm.…”
Section: Introductionmentioning
confidence: 83%
“…It has been demonstrated in [8] that the interharmonic characteristic is strongly dependent on the MPPT algorithm parameters such as the perturbation step-size v step and the sampling rate f MPPT . As discussed in [8], the interharmonic emission can be effectively alleviated by reducing the sampling rate of the MPPT algorithm. However, this will inevitably slow down the tracking performance of the MPPT algorithm [9], which may reduce the MPPT efficiency and thus the PV energy yield, especially during changing environmental conditions (e.g., solar irradiance and ambient temperature).…”
Section: Introductionmentioning
confidence: 99%
“…Although it is known that inter-harmonics are produced by non-linear loads, there are a few studies which focus on their creation mechanism [21][22][23][24]. According to these works, harmonic sources can be classified in four sub-concepts.…”
Section: Data Modelmentioning
confidence: 99%