Sentence examples for harmonic levels from inspiring English sources
The highest overall harmonic levels were found for the configuration with equal blade numbers.
The harmonic levels are analyzed at different loading conditions using the fast Fourier transform (FFT) on MATLAB optimization program.
A simple pseudo one-dimensional model is used to estimate the expected on-axis harmonic levels generated with a rectangular aperture.
Wind power installations impact the harmonic levels through their emission.
As a result, the impedance-frequency characteristic of the dc grid is different, thus affecting the harmonic levels.
The replacement of conventional power stations by wind power installations has an indirect impact on harmonic levels.
Both filters are able to attenuate the harmonics up to 19 GHz with a maximum harmonic level of −20 dB.
The inverter output current which is imported to the grid is in sinusoidal waveform and the harmonic level of it meets the international standards (4.3 < 5.0%).
The harmonic level is determined by the THD value, which is a measure of similarity of shape between a waveform and its main mechanisms [30].
Although a 3-level converter has relatively lower harmonic contents in the output voltage waveform, and its switching frequency, total harmonic level and losses have also been reduced, the converter has complicate topological structure, higher costs and lower reliable system.
Due to the effects of inter-harmonics, although the harmonic level of individual is within the limits defined by [14], the harmonic demand distortion (TDD) at the PCC1 of the ac system 1 is still higher than the acceptable value (1.5%).
