highest voltage switcher (half or fullbridge)

[Jamie M]

Hi,

Just curious what the highest voltage switcher people here have built?

cheers,
Jamie

 

[Jasen Betts]

Hi,

Just curious what the highest voltage switcher people here have built?

Probably Tesla coil.

 

[Jasen Betts]

Probably Tesla coil.

not me personally.

 

[legg]

Hi,

Just curious what the highest voltage switcher people here have built?

cheers,
Jamie

Your topologies refer to topologies hanging on the 'input' voltage. Is
input voltage what you're after?

Output voltages will depend on downstream configuration of
transformers and rectifiers, and is loosly independent.

RL

 

[Joerg]

Hi,

Just curious what the highest voltage switcher people here have built?

5kV, to deliver defibrillator pulses.

 

[Jamie M]

Your topologies refer to topologies hanging on the 'input' voltage. Is
input voltage what you're after?

Hi,

I was wondering about how high the voltage difference can be for
the primary to secondary coil on a half or fullbridge switcher, before
something fails or becomes impractical, ie coil to core insulation etc.

Could a fullbridge topology go to higher voltages and power more
efficiently than a flyback, ie. for the same core from an old TV
flyback, but not gapped for the fullbridge.

cheers,
Jamie

 

[Fred Bartoli]

Bill Sloman a écrit :

Most of us have done better with an ignition coil - 20kV pulses
several microseconds wide.

Pb is not doing long pulses. 2ns is somewhat more difficult.

 

[Jamie]

Hi,

Just curious what the highest voltage switcher people here have built?

cheers,
Jamie

60KVDC output for special case in HI-POT testing. Watches the
primary side in the off duty for return energy to determine what is
happening on the secondary side as it is ramping up.

Output current does not exceed 100ua at full output however.

Jamie

 

[Ralph Barone]

HVDC power transmission is something 500kV, might not really count as
a switcher
but it is DC that's chopped up and will eventually go to a transformer

-Lasse

If we'll allow HVDC converters, I can say that I worked on 280 kV.

 

[[email protected]]

HVDC power transmission is something 500kV, might not really count as
a switcher
but it is DC that's chopped up and will eventually go to a transformer

Those big HVDC systems are mains commutating thyristor systems.

The HVDC Lite (ABB) and HVDC Plus (Siemens) are actually switchers
with voltages around +/- 100 kV DC.

 

[Tim Williams]

We regularly work with 480VAC supplied equipment, which switches at ~700VDC,
producing transients to maybe 900V peak at the worst.

Up at corporate, some guys are working with 2400V IGBTs. They don't even
have anything over 480V in house without a transformer, but a few of their
customers do. When you need to deliver a megawatt or so, it comes in handy
to do it with just one or two modules.

Tim

 

[josephkk]

Micro ain't nano. There's a factor of - calculates furiously - about a
thousand to one difference.

So it's a typo then.

?-)