Re: Split Phase Motor/Generator

From: Doug Goncz (dgoncz_at_aol.com)
Date: 10/14/04 

Date: 14 Oct 2004 10:46:20 GMT

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.

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