I need generator which at 150000 rpm give 42A at 10kW current

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Discussion Overview

The discussion revolves around the feasibility of obtaining a generator that can operate at 150,000 RPM to produce 42A at 10kW for use in a car turbine system. Participants explore the technical requirements and implications of such a generator, including its application in hybrid vehicles and the associated challenges.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions the practicality of using a turbo-charger to provide the necessary torque for the generator to produce the specified power.
  • Another participant suggests that the original poster may have meant 15,000 RPM instead of 150,000 RPM.
  • There is a proposal to use the generator in a hybrid car to charge batteries, raising questions about the design of a heat exchanger and its components.
  • Concerns are raised about the efficiency of converting energy from airflow past the car into electrical energy, suggesting that it may not improve vehicle efficiency.
  • One participant notes that generators typically do not operate at 150,000 RPM and suggests using reduction gears to connect the turbine to the generator.
  • A participant agrees that creating a generator capable of 150,000 RPM is challenging but inquires about the feasible RPM range for generators with reduction gears.

Areas of Agreement / Disagreement

Participants express skepticism about the feasibility of achieving 150,000 RPM with a generator, and there is no consensus on the practicality of the proposed system. Multiple competing views regarding the design and efficiency of the system remain unresolved.

Contextual Notes

Participants highlight potential misunderstandings regarding the specifications of power and current, as well as the efficiency of energy recovery methods. The discussion includes assumptions about the capabilities of generators and the role of reduction gears.

Who May Find This Useful

Individuals interested in automotive engineering, hybrid vehicle technology, and generator design may find this discussion relevant.

kacyz
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Hello, I need Your help. I am looking for generator and I don't know were to find it.
I need generator witch at 150000 rpm give 42A at 10kW current.
This generator I will use at my car turbine, so it should be smoll.
Thank you for your help.
 
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You are saying you want to hook a turbo-charger to this generator? Do you really think a turbo-charger can give you the required torque to supply this kind of power? By 10KW of 'current' I assume you mean power as in Watts. 'Current' is measured in amperes which you have already spec'd at 42.
 


kacyz said:
Hello, I need Your help. I am looking for generator and I don't know were to find it.
I need generator witch at 150000 rpm give 42A at 10kW current.
This generator I will use at my car turbine, so it should be smoll.
Thank you for your help.

Do you mean 15,000 RPM?
 


I attach an idea that I am talking about. I am planning to adjust this system in the hybrid car to charge batteries.

What do you think about heat exchanger, what could be inside it?
 

Attachments



kacyz said:
I attach an idea that I am talking about. I am planning to adjust this system in the hybrid car to charge batteries.

What do you think about heat exchanger, what could be inside it?

What are you proposing with this turbine in your document? Are you trying to convert energy in the airflow past the car into electrical energy? That is not going to help the efficiency of the vehicle.

Your calculations appear to be off the mark as well.
 


Looks like he's trying to build a gas turbine (jet) engine using engine heat as a substitute for combusted gas. Interesting idea, I'm just not sure you can recover heat efficiently enough this way to matter.

In any case, the answer to the question in the OP is that generators just plain don't do 150,000 rpm: gas turbine power plants have reduction gears. You'll want to tie the turbine to a reduction gear to power the generator.
 


I agree that is difficult to create generator with 150000 rpm, but with reduction gear I can reduce rpm, so how much generator can have rpm?
 

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