Basc Strateges n Power Electroncs Prof. Dr. Ing. Ralph Kennel (ralph.kennel@tm.de) Technsche Unverstät München Electrcal Drve Systems and Power Electroncs Arcsstraße 21 80333 München Germany
In power electroncs, however, ths s the correct way! sal strateges n electrcal engneerng Real World (tme doman) ntal staton calclaton(s) mght be possble as well Transformaton sally t s easer ths way! Dream World (xxx-doman) ntal staton calclaton(s) Real World (tme doman) reslt back transformaton Dream World (xxx-doman) reslt we jst shold not forget to retrn to realty!
Sgnal Electroncs Power Elektroncs + + + e a e a e a - Emtter Topology - Bass Topology - Collector Topology e a why? why? Emtter Topology Bass Topology Collector Topology whch topology s that?
Fndamental Strctre of Power Electroncs mans power electronc system sgnal electroncs drver electroncs flter converter flter load
(dealzed) man components n power electroncs voltage sorce swtch (power devce) crrent sorce
(dealzed) man components n power electroncs capactor = voltage sorce swtch (power devce) crrent sorce
(dealzed) man components n power electroncs capactor = voltage sorce swtch (power devce) ndctance = crrent sorce
In whch cases can (power semcondctor) swtches be sed? operaton pont voltage sorce swtch (power devce) crrent sorce
t s not possble to connect 2 voltage sorces lke ths operaton pont? U1 U 1 voltage sorce swtch (power devce) voltage sorce
the same s vald for 2 crrent sorces operaton pont? I 1 I 1 voltage sorce swtch (power devce) crrent sorce
what can one do, f 2 crrent sorces have to be connected anyway? one changes one of the crrent sorces to a voltage sorce how??? wth a capactor!!! operaton pont I 1 U 1 I 1 U 1 voltage crrent sorce swtch (power devce) crrent sorce
what can one do, f 2 voltage sorces have to be connected? one changes one of the voltage sorces to a crrent sorce how??? wth an ndctance!!! operaton pont I 1 I 1 U1 U 1 voltage sorce swtch (power devce) voltage crrent sorce
examples power electroncs (nverter) does that work? YES! electrcal (voltage) power spply electrcal motor = voltage sorce = voltage sorce wth ndctance = crrent sorce ths s a lne commtated nverter! M
examples power electroncs (nverter) does that work? YES! electrcal (DC voltage) board power spply electrcal motor = voltage sorce = voltage sorce wth ndctance = crrent sorce ths s a drve n atomotve applcaton! M
examples does that work? NO! power electroncs (rectfer) power electroncs (nverter) YES! electrcal (voltage) power spply = voltage sorce capactor n the DC lnk = voltage sorce M electrcal motor = voltage sorce wth ndctance = crrent sorce voltage sorce nverter (VSI)
an ndctance has to be ntegrated ether here or here Basc Strateges n Power Electroncs power electroncs (rectfer) examples power electroncs (nverter) does that work? YES! electrcal (voltage) power spply = voltage sorce capactor n the DC lnk = voltage sorce M electrcal motor = voltage sorce wth ndctance = crrent sorce voltage sorce nverter (VSI)
examples not drectly! power electroncs (DC/DC converter) does that work? e. g. 42 V e. g. 12 V electrcal (DC voltage) board power spply = voltage sorce electrcal (DC voltage) board power spply = voltage sorce
examples an ndctance has to be ntegrated does that work? n many DC/DC convertters, however, an ndctance s already ntegrated power electroncs (DC/DC converter) e. g. 42 V e. g. 12 V electrcal (DC voltage) board power spply = voltage sorce electrcal (DC voltage) board power spply = voltage sorce
Thank yo!!!