Re: Split Phase Motor/Generator
From: Terry Given (my_name_at_ieee.org)
Date: 10/19/04
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Date: Wed, 20 Oct 2004 06:26:09 +1300
Doug Goncz wrote:
> Hello all. I have read Google: "self-excited induction generator" to about 10%.
>
> I found:
>
> Electrical Construction and Maintenance
>
> Guidelines for engine-generator application designs.
>
>
> by Lawrie, Robert J. | May 01 '96
>
>
> on Keep Media.
>
> ----------------------------------------------------
>
> Induction generator
>
> The construction of an induction generator is essentially the same as that of
> an induction motor: Both have a squirrel-cage rotor and wound stator. When this
> machine is driven above its designed synchronous speed, it becomes a generator;
> at less than synchronous speed, it functions as a motor. Because the induction
> generator does not have an exciter, it must operate in parallel with the
> utility. This outside power source provides the reactive power for generator
> operation. Also, its frequency is automatically locked in with the utility.
>
> An induction generator is a popular choice for use when designing cogeneration
> systems, where it will operate in parallel with the utility. This type of
> generator offers certain advantages over a synchronous generator. For example,
> voltage and frequency are controlled by the utility; thus voltage and frequency
> regulators are not required. In addition, the generator construction offers
> high reliability and little maintenance. Also, a minimum of protective relays
> and controls are required. Its major disadvantage is that it normally cannot
> operate alone as a standby/emergency generator in such an application.
>
> ---------------------------------------------------
>
>
> Yours,
> Doug Goncz ( ftp://users.aol.com/DGoncz/incoming )
> Student member SAE for one year.
> I love: Dona, Jeff, Kim, Mom, Neelix, Tasha, and Teri, alphabetically.
> I drive: A double-step Thunderbolt with 657% range.
yep. And if you dont have a grid, the add-on caps provide the reactive
current path.
Cheers
Terry
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