About application perspective of capacitive energy storage in the frequency-controlled electric drive

Investigation of the Electromagnetic Compatibility of a Frequency-controlled Electric Drive with Supercapacitors

“…The block of supercapacitors in a frequency-controlled electric drive increases its energy efficiency, which leads to a reduction in the energy consumption of the electric drive up to 50 % in comparison with solutions, in which the braking energy is dissipated on the braking resistor [1][2][3]. Another important advantage of such electric drive systems is the increasing the system autonomous work time during the power supply failure, especially if together with supercapacitors the batteries are used.…”

“…The article considers a variant, where the supercapacitors are connected directly to the DC link of the frequency converter. Although this version has several disadvantages, associated with incomplete using of the capacitance of the supercapacitor, however this is the simplest and inexpensive solution, which does not require the using of additional DC-DC converters with its own automatic control system [3].…”