PV based Isolated DC-DC Converter Fed Induction Motor Drive for Railway Applications

Mohammed Muddassir Uddin, P. Kamalakar


The dual active bridge (DAB) topology as an attractive alternative to full-bridge topology. In comparison with the conventional full bridge topology, the output inductor is transferred to the ac side, and is in series with the leakage inductance. Consequently, the energy in the leakage inductance is transferred to the load without causing reverse recovery losses in the output diodes. This allows higher switching frequencies and, therefore, an increase in power density. In this project three-phase dual active bridge (DAB) topology used as high-power-density dc–dc converter for railway applications. The three-phase DAB is analyzed concerning the current intervals, the output power, and soft switching region, including the impact of zero-voltage switching capacitors. Furthermore, two measures are proposed to achieve soft-switching in the entire operating range, being auxiliary inductors and a straightforward switching strategy called the burst mode. Optimal component values are calculated to minimize losses in the complete operating range and to assess which measure is best suited. The simulation results are presented by using Matlab/Simulink software.

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Copyright (c) 2016 Mohammed Muddassir Uddin, P. Kamalakar

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