corrosion of the tank and electrodes of the electrolyzer cell. Identical full-bridge circuits are driven with complementary square waves. The phasing of the drive signals between the primary side and the secondary determines the direction of power flow. In addition, the DAB converter minimizes switching losses by using zero-volt switching of the IGBTs. The circuit can be fabricated with half- bridge IGBT or silicon carbide (SiC) MOSFET modules. Conclusion As the worldwide demand for clean energy sources continues to increase, green hydrogen separation based on renewable energy sources will grow in importance. Such sources demand efficient, reliable, and highly stable DC power. Designers can turn to Infineon Technologies’ broad high voltage and current semiconductors portfolio for the necessary power conversion components.
Figure 7: An interleaved buck converter reduces the input DC level, V DC1, to the output level V DC2 . (Image source: Infineon Technologies)
phase of the implementation can be realized with an appropriate module. The FF800R12KE7HPSA1 is a half-bridge IGBT 62 mm module suitable for the buck topology DC/DC converter. It is rated for a maximum voltage of 1200 V and supports a maximum collector current of 800 A.
The dual active bridge (DAB) converter is an alternative to the buck converter (Figure 8). The DAB converter uses a high- frequency transformer to couple the input and output full-bridge circuits to provide galvanic isolation. Such isolation is often helpful to minimize
Figure 8: A DAB converter performs voltage step-down and provides galvanic isolation between input and output. (Image source: Infineon Technologies)
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