1. Impact Assessment of High-Frequency Distortions Produced by PV Inverters.
- Author
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Torquato, Ricardo, Hax, Glaucio R. T., Freitas, Walmir, and Nassif, Alexandre
- Subjects
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IDEAL sources (Electric circuits) , *PULSE width modulation , *GOVERNMENT agencies , *HOUSEHOLD appliances , *HARMONIC suppression filters - Abstract
Utility engineers, professionals from regulatory agencies, manufacturers and researchers have discussed if high-frequency distortions produced by rooftop photovoltaic generators are a general power quality concern for distribution systems. In this context, this paper presents the results of an extensive research to investigate the emission and propagation characteristics of such high-frequency distortions. Analytical and theoretical analyses, computer simulations, laboratory experiments and field measurements revealed that high-frequency distortions emitted by rooftop photovoltaic inverters are produced with a voltage source characteristic. As a result, the equivalent grid impedance limits and attenuates significantly the high-frequency distortions injection and propagation into the distribution systems. Moreover, the front-end, low-pass filters found in many home appliances also contribute with such attenuation by sinking part of the high-frequency distortions. In summary, the results indicate that these distortions are unlikely to become a generalized power quality concern, so that the front-end filters commonly available for such devices, when properly designed, are enough to deal with this issue. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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