Which is better for low rpm power generation: generator or alternator?

In summary, the conversation discusses the difference between an alternator and a generator for low rpm power generation in a wind turbine. The speaker is unsure which option would be better and the discussion highlights the use of permanent magnets in the rotor and the difference between DC and AC generators. The thread is then closed due to the banned status of one of the members.
  • #1
MagneticMan
1
0
Hello there everyone.

I was wondering about low rpm power generation.
Is it better to get an alternator or a generator?

I've been reading about both but I'm still a little confused about which would be best suited.
This is going to be for a wind turbine. So the rpm and the power will be pretty low.
My area has wind but not all that strong. 5-10 mph is about all we get here on a regular basis.
Unless there is a storm. Lol

Thanks in advance
 
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  • #2
well an alternator is also a generator as it generates electricity it is just called alternator because it produces AC.
Now many generators have a commutator which is the part where the electric contact is provided for the rotor windings which requires a sliding contact which does wear out with time.

Now if your application is as you say low power , I would buy an alternator which has permanent magnets in the rotor or is otherways brushless.

there are basically dc and ac generators.
Alternator is an ac generator (commonly understood as a smaller one like in cars etc.)
 
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  • #3
The OP is a previously banned member, thread closed.
 

FAQ: Which is better for low rpm power generation: generator or alternator?

Q: What is the difference between a generator and an alternator?

A: A generator and an alternator are both devices that convert mechanical energy into electrical energy. However, a generator produces direct current (DC) while an alternator produces alternating current (AC). In addition, a generator uses brushes and a commutator to produce electricity, whereas an alternator uses diodes to convert the alternating current into direct current.

Q: Which one is more efficient, a generator or an alternator?

A: Generally, an alternator is more efficient than a generator. This is because an alternator can produce a higher voltage output at lower speeds, making it more suitable for modern electrical systems. Additionally, an alternator does not have brushes that can wear out, resulting in a longer lifespan and less maintenance compared to a generator.

Q: Can a generator and an alternator be used interchangeably?

A: No, a generator and an alternator cannot be used interchangeably. As mentioned, they produce different types of current and have different components. While it is possible to convert an alternator into a generator, it requires significant modifications and is not recommended unless you have experience and expertise in electrical engineering.

Q: Which one is better for a car, a generator or an alternator?

A: For modern cars, an alternator is the preferred choice. This is because an alternator can produce a higher voltage output at lower speeds, making it more suitable for the electrical demands of a car. Additionally, an alternator does not have brushes that can wear out, resulting in a longer lifespan and less maintenance compared to a generator.

Q: Are there any advantages of using a generator over an alternator?

A: Yes, there are some advantages of using a generator over an alternator. Generators are simpler in design and can be more cost-effective to produce. They also have a higher starting torque, making them better suited for powering heavy machinery and equipment. However, for most modern applications, an alternator is the preferred choice due to its higher efficiency and reliability.

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