The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2022
Filed:
Nov. 08, 2019
Barrett Technology, Llc, Newton, MA (US);
Claude F. Valle, IV, Burlington, MA (US);
Amy A. Blank, Brighton, MA (US);
Brian Zenowich, Wayland, MA (US);
Thomas Nadovich, Newton, MA (US);
Donald E. Drumm, Billerica, MA (US);
Christopher Woodall, Somerville, MA (US);
William T. Townsend, Weston, MA (US);
Barrett Technology, LLC, Newton, MA (US);
Abstract
A motor controller for controlling the operation of a three-phase permanent magnet synchronous electric motor, wherein the three-phase permanent magnet synchronous electric motor is characterized by three phases A, B, C, and further wherein the three-phase permanent magnet synchronous electric motor is driven by regulating three phase currents i, iand ifor the three phases A, B, C, respectively, the motor controller comprising: a three-phase power supply for supplying the three phase currents i, iand ia first sensor for sensing the phase current i; a second sensor for sensing across the phase currents iand i; and a microcontroller for controlling the operation of the three-phase power supply so as to produce the three phase currents i, iand ineeded to operate the three-phase permanent magnet synchronous electric motor, wherein the microcontroller reads the outputs of the first sensor and the second sensor and adjusts operation of the three-phase power supply so as to produce phase currents i, iand iwhich produce the desired torque in the three-phase permanent magnet synchronous electric motor.