Forum Discussion
theoldwizard1
Jan 04, 2018Explorer II
There are a few companies that manufacture 12VDC AC pumps. Typical they only sell the pump and it is up to the consumer to configure the rest of the system. (Not as difficult as it might sound).
One problem with DC motors is getting them to run efficiently at variable speed. AC motors are more efficient and have no brushes. They can be operated by a variable frequency motor controller to provide variable speed.
(Home inverter AC/heat pumps actually covert the incoming AC to DC and then feed that into a variable frequency motor controller. This way they can operate the motor at a lower speed when less cooling is required.)
One problem with DC motors is getting them to run efficiently at variable speed. AC motors are more efficient and have no brushes. They can be operated by a variable frequency motor controller to provide variable speed.
(Home inverter AC/heat pumps actually covert the incoming AC to DC and then feed that into a variable frequency motor controller. This way they can operate the motor at a lower speed when less cooling is required.)
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