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Real Electronic Supercharger.

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Chris Cristini

Tue Jul 14 2009, 03:52AM

Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497

I was thinking about something if this whole thing does not work I could maybe use it as a high flow duct system for cooling things like brakes or an oil cooler what do you think?

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Renesis

Tue Jul 14 2009, 08:30PM

Registered Member #2028 Joined: Mon Mar 16 2009, 08:13PM
Location: Norway
Posts: 319

Of course, fluid cooling with a simple radiator is a fine enough way to keep anything at a reasonable temperature, but why not go overkill?

Or how about a DRSSTC heat sink?

And if this thing will be as powerful as a real turbocharger, you could make an awesome vacuum cleaner out of it!

Chris Cristini

Thu Jan 28 2010, 02:00AM

Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497

Can I ask for help in Knowledge of switched reluctance motors I believe that a high frequency SR motor is the way to go I have been playing around and got simple results that mean nothing.

Steve Conner

Tue Feb 02 2010, 01:13PM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

Dyson has one in his new vacuum cleaner.

HV Enthusiast

Tue Feb 02 2010, 03:21PM

Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068

Chris,

Boosting an engine is all about entire system efficiency. You will NEVER get the efficiency required to make a supercharger for a car powered by electricity. Any gains in engine power, will be dwarfed by the amount of power required to turn an electric turbine.

Its simple physics.

Here's an example. A Vortech V3 supercharger for 350Z which produces 8 psi boost requires about 50hp to operate at rated speed.

In otherwords, thats about 37kW of power to move that turbine at its rated speed.

If you had a similar electric blower (assuming 90%) efficiency, you would need about 41kW to power the motor (assuming mechanical losses are equal). With an alternator with 80% efficiency, you would need about 51kW of power.

51kW is about 3600 amps. First good luck finding or even fitting an alternator like that into your car, and the weight of that alternator would surely diminish any gains anyways.

Of course, these numbers are just a wag, but you get the general idea.

Chris Cristini

Fri Feb 05 2010, 04:13PM

Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497

Yea it is real far fetched but its a good learning experience I have learned so much about electromechanical physics gain and loss and so fourth I will give an update when I am done building my SR motor its all held together by electrical tape for now Ha ha and it spins at least 1500RPM so far which is not even 1\8 of what I need. Just need to figure out what I need to use for control electronics. I know Dyson has all kinds of patents on his SR motor so if I design my own do you think I will have issues with that. And thank all of you for dealing with my thick headedness and posting back.

radiotech

Fri Feb 05 2010, 10:42PM

Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546

I have a 2.5 kW 120 volt 400 Hz dynamotor which is aircraft-light
It's input is 28VDC at about 100 amps. One of those with an output shaft attached might help if you could do it.When its running, it acts like a gyro. Such *junk* might be found in aircraft surplus emporiums. It comes with a starting relay too.

Chris Cristini

Wed Feb 10 2010, 04:31PM

Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497

Well I may have modified a pancake motor. The motor originally used two magnets on both sides of the disk I took one out and repositioned the brushes and it screams you guys might have a video tonight for an idea it's pretty crazy.

The pancake motor is held on to the compressor housing by super glue and RTB gasket maker for now it is a good thing I have two identical turbo assembles I had to rough up the compressor housing to get the glue to hold good it may never come off again it's on good.

The SR motor is on hold for a little bit I need to find a rotor the one I made can not take the centrifugal forces that it endures the electrical tape is just not strong enough.

plazmatron

Wed Feb 10 2010, 07:11PM

Registered Member #1134 Joined: Tue Nov 20 2007, 04:39PM
Location: Bonnie Scotland
Posts: 351

I'm pretty sure that regular superchargers are nothing more than roots pumps. The output pressure is high, as is the throughput, without the insane RPM's of a turbo.
Maybe its worth acquiring an industrial roots blower from somewhere and using that?

Chris Cristini

Wed Feb 10 2010, 08:10PM

Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497

The super charger the fins are chewed but that's OK for now. And the power supply 66V.

1265832616 1749 FT65807 Picture Eturbo 001

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I made a video don't mind the bad quality hope you can see it.

I will make a better video when I find more light. More light found here is a better video with me checking the current as well.

And here is me checking the brush temp after a 20min run time at 66V

66V 1.4A=92.39999999999999W that does not sound right does it? Oh man switched reluctance supercharger but its tiny

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