Using a motorbike engine to rotate a generator

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SUMMARY

This discussion focuses on using a 100cc 8hp motorbike engine to drive a 2KW generator, aiming for a consistent output of 240V at 1500 RPM. The user plans to run the engine at 2200 RPM to maintain voltage under load. It is confirmed that a voltage regulator is necessary to stabilize the output voltage, and a speed governor is recommended for variable loads. The discussion also highlights the importance of understanding the type of generator being used, such as induction or synchronous, as this affects voltage output relative to RPM.

PREREQUISITES
  • Understanding of AC generator types, including induction and synchronous generators
  • Knowledge of voltage regulation techniques and devices
  • Familiarity with speed governors and their applications in generator systems
  • Basic principles of electrical load management
NEXT STEPS
  • Research the specifications and operation of induction and synchronous generators
  • Learn about voltage regulator types and their implementation in generator systems
  • Investigate speed governor systems and their role in maintaining generator RPM
  • Explore the concept of gensets and their applications in various power generation scenarios
USEFUL FOR

This discussion is beneficial for electrical engineers, hobbyists interested in DIY power generation, and anyone involved in designing or optimizing generator systems using motorbike engines.

regencydon
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Hi,
I am thinking to use a 100c 8hp motorbike engine to rotate a 2KW generator which must be turned at 1500rpm. I thought of setting the bike engine to 2200rpm on no load so that when I put the generator on full load, the rpm hopefully will not go under 1500rpm. So what I want to know is, if the generator produces 240v at 1500 rpm and if i run the engine at 2200rpm, will the generator produce more than 240v. If so, if I fit a voltage regulator to the output of the generator, will it reduce the volt to 240v constant. Please help me with this guys
 
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You mean AC generators, right?

How voltage changes with RPM depends on what kind of generator, induction, synchronous, variable frequency?

Yes you need a voltage regulator, and a speed governor if the electric load is variable, and a AC frequency reference if using an induction generator.

By the way, a gas motor paired with a generator is called a genset. Such as this one:

https://www.physicsforums.com/file:///home/chronos/u-e3f5c9b708165d5f264d230e2b32c94680c0512f/MyFiles/Downloads/5c4c81eccfe734893.pdf
 

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