anybody explain the inverter drives

[ngm...@gmail.com]

hello all,
3ph,415v,50HZ motor operate with inveter drive.for instance if the
motor is oprate with 25HZ what will be the terminal voltage in the
motor.

1.if it is 415? is it possible to oprate with Low frequency.
2. if it is not what will be the terminal voltage ?how?

regards

T.Venugopal

[Gerald Newton]

You need to talk to Rockwell Automation Allen Bradley. They design
and build these things.
Try: http://www.ab.com

[Bob Eld]

<ngm...@gmail.com> wrote in message
news:48d9cb7a-5a9b-43b6...@l28g2000prd.googlegroups.com...

In order to keep the volt-time product constant, the RMS voltage would be
208 volts. This is usually produced by high frequency PWM switching. The
operating maximum flux density in the motor is the time integral of voltage.
If the time doubles, the voltage halves for constant max flux.

Without this arrangement to control the voltage applied by the inverter, the
volt-time product would increase as the frequency lowered .This would cause
higher and higher flux density and the motor would draw more and more
current until something blew as the core saturated. Bad news!

[Dean Hoffman]

What about using solar panels with a battery backup? I'm thinking
of something similar to solar powered fencers.

Dean

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[ngm...@gmail.com]

thank you sir,
venu