Electric motor for viscous pumping
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United States of America Patent
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Sep 26, 2023
Grant Date -
Nov 18, 2021
app pub date -
Sep 19, 2019
filing date -
Sep 21, 2018
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Abstract
An electric motor for viscous pumping, wherein the electric motor is a brushless DC motor configured to be driven by a low DC voltage of around 40-60 VDC, and includes: a rotor with permanent magnets; a stator with a stack of laminations and windings wound therearound; and a controller to provide electronic commutation of electric current flowing through the windings; wherein the windings and the stack of laminations are configured to handle at least 1 kW of continuous electric power from the controller, and the controller includes a feedback circuit including a rotation sensor coupled to the rotor and having an angular resolution of at least 1/500th of a revolution to allow the controller to control the torque generated by the electric motor to a corresponding extent.
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