Liebert Corporation

Jeffery Powell

Brian Paul Heber

Terry Dwane Bush

Mohammad Nanda Marwali

This disclosure is concerned with devices and methods for voltage source transfer switching that reduces or eliminates transformer saturation due to DC flux built up during a transfer event. First and second voltage sources (primary and alternate) are connectable to a load via corresponding switches. A transformer is connected downstream of the switches. A controller operates the switches according to various transfer methods wherein a switching time is determined to minimize downstream saturation current.

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Lewis Center, OH, United States of America

Jeffery Powell