Inside my full scale AC brushless motor

[BrianG]

Unless battery technology changes dramatically, or solar power becomes much more efficient, I don't think we will see high power and long range in the same vehicle very soon. Power is V X A, and even a HV setup will pull some serious current to get high HP figures.

So, what about the use of turbine engines as a generator? I would imagine an engine could be tuned for maximum efficiency for a certain rpm and could run that all the time. And a turbine has less losses IIRC (higher efficiency). So, hook up a small ~50HP one to charge the batteries. For most people, a measely 200HP is all that's needed for decent launches (barring racing), and it only takes a small fraction of that power to keep a car moving at highway speeds. So, the batteries would provide the current peaks for starts, and they would be continually charged by the generator. You'd still have a range limit when you run out of fuel or your discharge is greater than the battery mAh combined with the charge rate of the engine/generator.

Twin 500HP motors with a 200m range? Hmm, let's see; 1000HP is 746,000w. If "only" 5% of that is needed to maintain normal speeds on the highway, that's still 37,300w (50HP). At say 400v, that's over 93A. To get 200m range at 70mph, you'd need 2.85 hours of runtime. That equates to 265Ah. Even doubling that voltage would still need ~132Ah. Still a lot of cells no matter how you set up the voltage. So, there's gotta be something to charge the system to get that kind of runtime. Or am I way off base here?

[lutach]

Originally Posted by BrianG

Unless battery technology changes dramatically, or solar power becomes much more efficient, I don't think we will see high power and long range in the same vehicle very soon. Power is V X A, and even a HV setup will pull some serious current to get high HP figures.

So, what about the use of turbine engines as a generator? I would imagine an engine could be tuned for maximum efficiency for a certain rpm and could run that all the time. And a turbine has less losses IIRC (higher efficiency). So, hook up a small ~50HP one to charge the batteries. For most people, a measely 200HP is all that's needed for decent launches (barring racing), and it only takes a small fraction of that power to keep a car moving at highway speeds. So, the batteries would provide the current peaks for starts, and they would be continually charged by the generator. You'd still have a range limit when you run out of fuel or your discharge is greater than the battery mAh combined with the charge rate of the engine/generator.

Twin 500HP motors with a 200m range? Hmm, let's see; 1000HP is 746,000w. If "only" 5% of that is needed to maintain normal speeds on the highway, that's still 37,300w (50HP). At say 400v, that's over 93A. To get 200m range at 70mph, you'd need 2.85 hours of runtime. That equates to 265Ah. Even doubling that voltage would still need ~132Ah. Still a lot of cells no matter how you set up the voltage. So, there's gotta be something to charge the system to get that kind of runtime. Or am I way off base here?

When I saw what SSC posted, I thought he found some alien technology and I know most of it is like any hyper marketed product. They must say good things to get big money fools to back them up. I hope he can back it up which will be great for the auto industry, but as of now all of it is BS.

I would love to post some of my ideas here, but would hate to see it being used by someone else. With all the components for my car working properly, I can get probably over 1000 miles. The figures have been confirmed by a great team of engineers working for one of the biggest EMS companies and by a great friend of mine who used to prepare my go kart for racing. He btw is a aerodynamic expert who helped me figure out the best possible drag co efficiency to get the numbers I was looking for. It only takes about 20Kw or less (Weight of vehicle and drag co efficiency plays a major part on this) to get a car to maintain 65-80MPH and it only takes that because of the size of these motors being used which makes tons of torque. Electric motors makes power from torque and beyond a certain RPM range that torque goes down and Kw goes up.

[lutach]

zeropointbug,

Here is the link for the Simovert products:

http://www.automation.siemens.com/mc...4fc/index.aspx

The devision I deal with said you can try to call their office here in the US and see if they can help.