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Switch mode battery chargers for utilities: Why? How? and Where?

Haissam Nasrat

Yves Lavoie

Steven Monk

The battery charger is an important component in a dc auxiliary system, and there has been a push for a more compact design. In this paper, we will be comparing two solid state topologies: high frequency switch mode rectifiers and low frequency rectifiers (ferroresonant, mag-amp and silicon controlled rectifiers). Basic decision criteria will be reviewed, and we will look at the various environmental and maintenance requirements that have resulted in successful SMR installations.

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