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The features of braking modes of frequency-controlled electric drive with capacitive energy storage are considered. The equations to estimate the energy of electric drive in the braking modes and main connection diagrams of electric drive with ultracapacitors with their advantages and disadvantages are shown. The methodic of energy calculation, which are transferred to the ultracapacitor in the braking...
The article deals with a mathematical model of the power part of the DC-DC converter, which is used to connect the supercapacitors into the DC link of frequency-controlled electric drive. The operating principle and boost and buck modes of the DC-DC converter are considered. The functional diagram and equations for power part of DC-DC converter as a part of frequency-controlled electric drive are...
The paper is devoted to the estimation of technical and economic efficiency of using the supercapacitors in the frequency-controlled electric drives, which are used in hoisting applications. In the article the frequency-controlled electric drives of passenger elevator and bridge crane are described in detail. The simulation and experimental results, energy consumption, calculation of economic efficiency...
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