dwarnecke11 Posted April 15, 2011 Report Share Posted April 15, 2011 As part of my senior design project, I need to be able to switch between two 12V, ~90A sources as an input to a large 1100W inveter. I'm planning on using a 93000uF 40VDC capacitor to support the load during the brief switchover time.What method of switching should I use? Mechanical relay, solid state relay, MOSFET, etc? I need to switch a large amount of current at 12VDC as quickly as possible. What about using a make-before-break configuration?The two sources will be a large battery bank charged by wind and solar, and a gas turbine generator. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted April 15, 2011 Report Share Posted April 15, 2011 Assuming the minimum operating voltage is 10V and the current is 100A, the 93,000 Quote Link to comment Share on other sites More sharing options...
einstein0 Posted June 25, 2011 Report Share Posted June 25, 2011 Use a heavy rectifier (Dual 100 A). If necessary you could bypass them by using a bistable relay of an appropriate contacts rating. I used this system in my campervan: 5 kWh/12V Batterybank & 140 Amp Alternator, supplying a 1000 W/12V inverter...einstein0 Quote Link to comment Share on other sites More sharing options...
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