US 11,784,554 B2
Power conversion system with enhanced protection for gaseous corrosive atmospheres
Garron Morris, Whitefish Bay, WI (US); Garrett Wolff, Sussex, WI (US); Craig Devroy, New Berlin, WI (US); James Carter, Wauwatosa, WI (US); and Christopher Genthe, West Bend, WI (US)
Assigned to Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US)
Filed by Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US)
Filed on Sep. 14, 2020, as Appl. No. 17/20,738.
Prior Publication US 2022/0085712 A1, Mar. 17, 2022
Int. Cl. H02M 1/32 (2007.01); H01L 23/00 (2006.01); H02M 7/217 (2006.01); H05K 5/00 (2006.01)
CPC H02M 1/32 (2013.01) [H01L 23/564 (2013.01); H02M 7/217 (2013.01); H05K 5/0095 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power conversion system comprising:
a rectifier comprising at least one rectifier switch module for rectifying AC input power;
a DC bus connected to the rectifier;
wherein said at least one rectifier switch module comprises:
a base plate;
a housing connected to the base plate and defining an interior space that contains at least one semiconductor switch;
a protective cover layer comprising a corrosion protection material, said protective cover layer dividing the interior space into an inner sub-space located between the base plate and the protective cover layer and an outer sub-space located between the protective cover layer and the housing;
wherein said at least one semiconductor switch is located in said inner sub-space such that an atmosphere in said outer sub-space passes through the protective cover layer of corrosion protection material before entering said inner sub-space.