Abb Inc.

Lambda Emi, Inc.

Vinod Bapat

Pradeep M Bhagwat

Aaron M Jungreis

Tom Goodman

Methods, systems and computer program products for controlling plating pulse rectifiers are provided by identifying one of the plurality of plating pulse rectifiers as a master plating pulse rectifier and identifying at least one of the plurality of plating pulse rectifiers, other than the master plating pulse rectifier, as a slave plating pulse rectifier. A recipe comprising a pulse pattern is downloaded to the master plating pulse rectifier and the slave plating pulse rectifier. A synchronization signal is transmitted from the master plating pulse rectifier upon initiating the pulse pattern of the recipe to the at least one slave plating pulse rectifier so as to cause the slave plating pulse rectifier to initiate the pulse pattern of the downloaded recipe. Plating pulse rectifiers suitable for use as master/slave plating pulse rectifiers and systems incorporating such plating pulse rectifiers are also provided.

Pulse plating rectifiers and methods, systems and computer program products for controlling pulse plating rectifiers in master/slave mode

A power conditioner interfaces a load to a fuel cell that produces a low voltage that varies with the load. A dc-to-ac inverter operates with a low voltage input provided by a dc bus . When a positive step load change occurs, a low voltage battery provides power equal to the step change until the fuel cell is able to provide enough power to support the entire load. The power from the battery is supplied to the varying dc bus through a boost converter . When very large positive load step changes occur, the battery can feed power to the dc bus through diode D , rather than through the boost converter. Diode D does not need to be used, but its use allows the boost converter to be sized for common load changes rather than for the maximum possible load change (such as might be seen during a faulted output). A buck converter converts the variable voltage on the dc bus to the appropriate float charging voltage of the battery. The buck converter also supplies power for auxiliary equipment when available from the fuel cell. If the fuel cell is unable to provide the auxiliary power (such as during startup or load transients), then the auxiliary power can come directly from the battery.

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Holmdel, NJ, United States of America

Vinod Bapat