Electromagnetic Compatibility of ACS5000 & PF7000 High-Voltage Frequency Converters Used within Processing Unit

The paper dwells upon the power quality measurement and analysis applicably to the mining processing units; the analysis compares the electromagnetic compatibility of ACS5000 and Power Flex 7000 high-voltage frequency converters with the power grid. It describes the factors of development in variable-frequency electric drives and converters. The paper shows how important it is to maintain the quality of electric power. It presents power quality indicators that are regulated in the Russian Federation per GOST 32144-2013. The research team analyzed two processing units powered by high-voltage drive systems using the frequency converters above. Technical data on the ACS5000 and Power Flex 7000 converters is provided to prove their state-of-the-art reliability. The quality of electric power in the incoming feeder cubicles has been instrument-monitored. The basic indicator for comparison is the total voltage harmonic distortion, which determines the non-sinusoidality. The paper presents visualized measurement and analysis results. Findings and conclusions are stated.