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China Yingli Solar group

Power quality problems: the factory has single crystal furnace, multi crystal furnace, PECVD and other loads. These loads produced a lot of harmonics and cause endanger to the power supply safety

Power quality solution: install Hoteam active harmonic filter

Data comparison:


Phase current waveform before

Phase current waveform after AHF


Phase current harmonic before

Phase current harmonic after AHF

Result analysis:

1)After operation of active harmonic filter, both voltage and current waveform had been improved.

2)The THDv reduced from 4.7% to 2.4%. The THDi reduced from 18.4% to 5.0%. 

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