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View Full Version : I want to know about adjustable speed machine (ASM). Can anyone help me, plz?



vihotruki
10-29-2007, 10:57 PM
I'm finding somei nformations about ASM, especially about its application in power system to maintain voltage after disturbance and when and where it needs to set, some advantage of using it incomparison with other devices, such as STATCOM, SVCs. Help me, many thanks!

jwelectric
10-30-2007, 03:29 AM
What appliciation will you be using this device on?

jimbo
10-30-2007, 06:18 AM
http://www.chevrolet.com/corvette/?seo=yahoo_corvette

vihotruki
10-30-2007, 07:14 AM
Thank u for your attention, but its application in power system, it can be used as a generator, generate both active power and reactive power, both of them can be control independently. Can u tell me more its effects in maintaining voltage after disturbance such as load shelding, earth fault,... to avoid voltage instability

jwelectric
10-30-2007, 08:21 AM
earth fault,... to avoid voltage instability

How do you have an "earth fault"?

hj
10-31-2007, 06:13 AM
Probably British/European for ground fault.

got_nailed
10-31-2007, 11:52 AM
Is this one of the flywheel UPS systems? And yes it will be an “earthing fault” with the 08 NEC. Would you drive this earthing rod for me?

jwelectric
10-31-2007, 01:52 PM
Is this one of the flywheel UPS systems? And yes it will be an “earthing fault” with the 08 NEC. Would you drive this earthing rod for me?

Again I ask just how do you have an earth fault?

The only way that I know to have an earth fault would be to connect the hot conductor to earth.

just how do you have an earth fault?

Also where are you finding “earthing fault” in the 08 NEC?

vihotruki
11-01-2007, 09:28 AM
It might mean short circuit....

jwelectric
11-01-2007, 12:36 PM
I think that you are talking about a device similar to what the power company uses to maintain constant voltage on a power grid.

This can be achieved by controlling the Pulsed Width Modulation and is a lot more detailed that most here would understand even if someone were to take the time to explain. In most colleges this covers a whole semester by itself.

As to anything that will maintain a constant voltage during a fault to ground, it has not been invented as yet.

Just what is the application you are talking about, please.