„Basic Strategies in Power Electronics“
Referents:Prof. Dr.‐Ing. Hans‐Georg Herzog
([email protected])Prof. Dr.‐Ing. Ralph Kennel
([email protected])Technische Universität München
Arcisstraße 2180333 München
Germany
LecturePower Electronics
Signal Electronics Power Elektronics
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Emitter Topology
why?
Basis Topology Collector Topology
which topology is that ?
Emitter TopologyBasis TopologyCollector Topology
why ?
Fundamental Structure of Power Electronics
signalelectronics
driverconverter
filter
mains
load
filter
power electronic system
electronics
Basic Strategies in Power Electronics
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(idealized) main components in power electronics
voltage source
switch(power device)
current source
Basic Strategies in Power Electronics
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voltage source
current source
capacitor
=
(idealized) main components in power electronics
switch(power device)
Basic Strategies in Power Electronics
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voltage source
current source
capacitor
=
=inductance
(idealized) main components in power electronics
switch(power device)
Basic Strategies in Power Electronics
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In which cases can (power semiconductor) switches be used ?
voltage source switch(power device)
current source
operation point
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Basic Strategies in Power Electronics
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voltage source
operation point ?
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it is not possible to connect 2 voltage sources like this
voltage source switch(power device)
Basic Strategies in Power Electronics
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current source
I1
the same is valid for 2 current sources
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voltage source switch(power device)
operation point ?
Basic Strategies in Power Electronics
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current source
current source
I1
what can one do, if 2 current sources have to be connected anyway ?
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one „changes“ one of the current sources to a voltage source
how ???
with a capacitor !!!
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operation point
voltage sourceswitch
(power device)
Basic Strategies in Power Electronics
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voltage source
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what can one do, if 2 voltage sources have to be connected ?
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one „changes“ one of the voltage sources to a current source
how ???
with an inductance !!!
current source
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operation point
voltage source switch(power device)
Basic Strategies in Power Electronics
examples
electrical (voltage) power supply
= voltage source
M
electrical motor
= voltage source with inductance
= current source
power electronics(inverter)
does that work ?
YES !
this is a line commutated inverter !
Basic Strategies in Power Electronics
electrical (DC voltage) board power supply
= voltage source
M
electrical motor
= voltage source with inductance
= current source
power electronics(inverter)
does that work ?
YES !
this is a drive in automotive application !
examples
Electrical Energy Conversion by Converters(Power Electronics)
Rectifier Inverter
Converter… if output frequency = input frequency :
(AC) Power Controller
DC/DC ConverterChopper Controller
Gleichrichter Wechselrichter
Gleichstromsteller
Umrichter (wenn Ausgangsfrequenz identisch zu Eingangsfrequenz: Drehstromsteller)
ConvertersconvertersStromrichter
buck converterTiefsetzsteller
(AC) power controllerDrehstromsteller
chopper controllerGleichstromsteller
convertersUmrichter
power controllersSteller
boost converterHochsetzsteller
direct converterDirektumrichter
cyclo converter
matrix converterMatrixumrichter
RectifierGleichrichter
InverterWechselrichter
link inverterZwischenkreisumrichter
current source inverter(CSI)
Stromzwischenkreisumrichter
resonance inverterResonanzumrichter
voltage source inverter(VSI)
Spannungszwischenkreisumrichter