Energy Saving ?
Posted 17 October 2006 - 07:00 PM
Anyone done any studies in this area ?
Posted 17 October 2006 - 09:49 PM
10 - 15% of what? I am not a fan of these percentage savings that get quoted unless they are well qualified.
If you use flux optimisation, you will reduce the iron loss in the motor. This will equate to some savings, but the amount can be quite small relative to the rated power of the motor. The bottom line is just how much iron loss is there in your particular motor. Small motors have a higher iron loss per KW motor rating than large motors.
It is common for large motors to have a full load efficiency in the order of 95%, which leaves 5% losses made up of iron loss, copper loss and windage losses. Typically, the iron loss will be in the order of 30 - 50% of the total losses at full load, so that gives you an indication of the potential saving, a portion of a couple of percent of the motor rating when the motor is operating at light load.
Newer drives can certainly be more efficient than some of the older drives.
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Posted 20 October 2006 - 07:11 PM
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