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:
Aug. 14, 2012
Filed:
Oct. 30, 2009
Jeong Hyeck Kwon, West Hartford, CT (US);
Edward A. Clark, East Longmeadow, MA (US);
Giridhari L. Agrawal, Simsbury, CT (US);
Jeong Hyeck Kwon, West Hartford, CT (US);
Edward A. Clark, East Longmeadow, MA (US);
Giridhari L. Agrawal, Simsbury, CT (US);
R&D Dynamics Corporation, Bloomfield, CT (US);
Abstract
This invention provides an advanced position and velocity estimation scheme used in a position-sensorless control system for synchronous operation of an electric motor. The system includes an electric motor having a stator and a rotor; an inverter for powering the electric motor; and a controller for controlling the inverter. The controller utilizes a control system comprising a rotor angle and angular velocity estimation block; an estimated angle error detector block; a field-weakening block; and a torque-to-current converter block, all of which operate to generate control commands for operation of the motor.