Forum Discussion
road-runner
Sep 13, 2017Explorer III
I took a look at the Danfoss web site and couldn't find any information that would help make a conclusion about AC vs. DC efficiency. Maybe somebody knows where to find this info?
I got the impression that the Danfoss compressors are variable speed, which suggests to me that the motors are non-60 Hz AC motors, further suggesting they are driven using a variable frequency inverter. Is this inverter powered by AC or DC? Does the 120 volt AC input simply get converted to 12 or 24 volt DC? Does the DC input get converted to 120 volt AC? Will using your own inverter be more or less efficient? Or is it something altogether different? Without knowing info like this, actual measurements with using different power sources will be the only way to find the efficiency information. Is this data already available, or is it waiting for somebody to figure it out?
I got the impression that the Danfoss compressors are variable speed, which suggests to me that the motors are non-60 Hz AC motors, further suggesting they are driven using a variable frequency inverter. Is this inverter powered by AC or DC? Does the 120 volt AC input simply get converted to 12 or 24 volt DC? Does the DC input get converted to 120 volt AC? Will using your own inverter be more or less efficient? Or is it something altogether different? Without knowing info like this, actual measurements with using different power sources will be the only way to find the efficiency information. Is this data already available, or is it waiting for somebody to figure it out?
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