„Basic Strategies in Power Electronics“ - TUM
„Basic Strategies in Power Electronics“ - TUM
„Basic Strategies in Power Electronics“ - TUM
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<strong>„Basic</strong> <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> <strong>Electronics“</strong><br />
Referents:<br />
Prof. Dr.‐Ing. Hans‐Georg Herzog<br />
(hg.herzog@tum.de)<br />
Prof. Dr.‐Ing. Ralph Kennel<br />
(ralph.kennel@tum.de)<br />
Technische Universität München<br />
Arcisstraße 21<br />
80333 München<br />
Germany
+<br />
u e<br />
-<br />
Signal Electronics � � <strong>Power</strong> Elektronics<br />
Emitter Topology<br />
u a<br />
u e<br />
+<br />
u e<br />
-<br />
u a<br />
Basis Topology Collector Topology<br />
why?<br />
which topology is that ?<br />
u a<br />
+<br />
u e<br />
-<br />
why ?<br />
Emitter Topology<br />
Basis Topology<br />
Collector Topology<br />
u a
Fundamental Structure of <strong>Power</strong> Electronics<br />
power electronic system<br />
signal<br />
electronics<br />
driver<br />
electronics<br />
filter<br />
ma<strong>in</strong>s<br />
converter<br />
load<br />
filter
voltage source<br />
current source<br />
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
(idealized) ma<strong>in</strong> components <strong>in</strong> power electronics<br />
I 0<br />
U 0<br />
i<br />
i<br />
I 0<br />
U 0<br />
u<br />
u<br />
switch<br />
(power device)
capacitor<br />
=<br />
voltage source<br />
current source<br />
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
(idealized) ma<strong>in</strong> components <strong>in</strong> power electronics<br />
I 0<br />
U 0<br />
i<br />
i<br />
I 0<br />
U 0<br />
u<br />
u<br />
switch<br />
(power device)
capacitor<br />
=<br />
voltage source<br />
<strong>in</strong>ductance<br />
=<br />
current source<br />
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
(idealized) ma<strong>in</strong> components <strong>in</strong> power electronics<br />
I 0<br />
U 0<br />
i<br />
i<br />
I 0<br />
U 0<br />
u<br />
u<br />
switch<br />
(power device)
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
In which cases can (power semiconductor) switches be used ?<br />
U 0<br />
voltage source switch<br />
(power device)<br />
I 0<br />
current source<br />
operation po<strong>in</strong>t<br />
i<br />
I 0<br />
U 0<br />
u
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
it is not possible to connect 2 voltage sources like this<br />
U 0<br />
voltage source switch<br />
(power device)<br />
voltage source<br />
operation po<strong>in</strong>t ?<br />
U 1<br />
i<br />
I 0<br />
U 0<br />
U 1<br />
u
I 1<br />
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
voltage source switch<br />
(power device)<br />
the same is valid for 2 current sources<br />
I 0<br />
current source<br />
operation po<strong>in</strong>t ?<br />
i<br />
I 0<br />
I 1<br />
u
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
what can one do, if 2 current sources have to be connected anyway ?<br />
I 1<br />
one „changes“ one of the current sources to a voltage source<br />
U 1<br />
voltage current source switch current source<br />
I 0<br />
how ???<br />
with a capacitor !!!<br />
(power device)<br />
i<br />
operation po<strong>in</strong>t<br />
I 0<br />
I 1<br />
U 1<br />
u
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
what can one do, if 2 voltage sources have to be connected ?<br />
one „changes“ one of the voltage sources to a current source<br />
U 0<br />
voltage source switch<br />
(power device)<br />
how ???<br />
with an <strong>in</strong>ductance !!!<br />
I 1<br />
U 1<br />
voltage current source<br />
i<br />
operation po<strong>in</strong>t<br />
I 0<br />
I 0<br />
U 0<br />
I 1<br />
U 1<br />
u
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
examples<br />
power electronics<br />
(<strong>in</strong>verter)<br />
does that work ?<br />
YES !<br />
�<br />
electrical (voltage) power supply<br />
electrical motor<br />
= voltage source<br />
= voltage source with <strong>in</strong>ductance<br />
= current source<br />
this is a l<strong>in</strong>e commutated <strong>in</strong>verter !<br />
M
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
examples<br />
power electronics<br />
(<strong>in</strong>verter)<br />
does that work ?<br />
YES !<br />
�<br />
electrical (DC voltage) board power supply<br />
electrical motor<br />
= voltage source<br />
= voltage source with <strong>in</strong>ductance<br />
= current source<br />
this is a drive <strong>in</strong> automotive application !<br />
M
an <strong>in</strong>ductance has to be <strong>in</strong>tegrated<br />
� �<br />
electrical (voltage) power supply<br />
= voltage source<br />
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
NO !<br />
either here or here<br />
power electronics<br />
(rectifier)<br />
examples<br />
power electronics<br />
(<strong>in</strong>verter)<br />
U 0<br />
capacitor<br />
<strong>in</strong> the DC l<strong>in</strong>k<br />
= voltage source<br />
voltage source <strong>in</strong>verter (VSI)<br />
does that work ?<br />
M<br />
YES !<br />
� electrical motor<br />
= voltage source with <strong>in</strong>ductance<br />
= current source
electrical (DC voltage) board power supply<br />
= voltage source<br />
Basic <strong>Strategies</strong> <strong>in</strong> <strong>Power</strong> Electronics<br />
examples<br />
an <strong>in</strong>ductance not has directly to be <strong>in</strong>tegrated !<br />
does that work ?<br />
<strong>in</strong> many DC/DC convertters, however, an <strong>in</strong>ductance is already <strong>in</strong>tegrated<br />
power electronics<br />
(DC/DC converter)<br />
e. g. 42 V e. g. 12 V<br />
� �<br />
electrical (DC voltage) board power supply<br />
= voltage source
Electrical Energy Conversion by Converters<br />
(<strong>Power</strong> Electronics)<br />
Umrichter (bei Frequenz = 0 : Drehstromsteller)<br />
Converter<br />
… if output frequency = <strong>in</strong>put frequency :<br />
(AC) <strong>Power</strong> Controller<br />
Rectifier Inverter<br />
Gleichrichter Wechselrichter<br />
DC/DC Converter<br />
Chopper Controller<br />
Gleichstromsteller
chopper controller<br />
Gleichstromsteller<br />
buck converter<br />
Tiefsetzsteller<br />
power controllers<br />
Steller<br />
(AC) power controller<br />
Drehstromsteller<br />
boost converter<br />
Hochsetzsteller<br />
cyclo converter<br />
Converters<br />
converters<br />
Stromrichter<br />
direct converter<br />
Direktumrichter<br />
matrix converter<br />
Matrixumrichter<br />
voltage source <strong>in</strong>verter<br />
(VSI)<br />
Spannungszwischenkreisumrichter<br />
converters<br />
Umrichter<br />
Rectifier<br />
Gleichrichter<br />
resonance <strong>in</strong>verter<br />
Resonanzumrichter<br />
Inverter<br />
Wechselrichter<br />
l<strong>in</strong>k <strong>in</strong>verter<br />
Zwischenkreisumrichter<br />
current source <strong>in</strong>verter<br />
(CSI)<br />
Stromzwischenkreisumrichter
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