Marke
There are a number of FREE homonics analyzers available on the web. These programs will allow you to "dry lab" a number of scenarios. I have found these situations to be very individualized. You may have to "turn over a lot of rocks" to solve the problem most...
I need to create a 40 Hz square wave, "ON" = +5V, time high = 2.3 miliseconds for an automotive application.
I'm looking for recomendations & advice on a 555 timer using an isolation diode or a voltage controlled regulator for this application.
I'm familiar with the 555, but have no...
The pulse width modulation used to simulate an AC source generates voltage spikes (ringing) and in certain cases standing waves can add up to high voltage values. Without damping of some kind phase to phase voltage differential can be as high as 1,600V.
Certain Annixter cable specifically for...
Clarification by post originator
The drives are low voltage (at or below 4160).
My model of an 18 pulse drive is combination of three 6-pulse drives, one bridge operating at the line voltage phase angle, a second at 120 deg and a third at 240 deg.
Also pay attention to the application. Depending on the horsepower and torque you may need a soft start or variable frequency drive with the appropriate (constant or variable) torque rating.
kjs
For a total load that is 90% from VFDs it appears that a 12 pulse drive may satisfy IEEE 519, but an 18 pulse drive will without question. What is the relative cost differential between a 12 and an 18? Is it reasonable to think of a 6 pulse drive as needing a lot of linear load dilution, a...
