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:
Jun. 22, 2021
Filed:
Sep. 17, 2019
Daniel R Luedtke, Beverly Hills, MI (US);
Nitinkumar Patel, Oakland, MI (US);
Mustafa Mohamadian, Birmingham, MI (US);
Lakshmi Narayanan Srivatchan, Auburn Hills, MI (US);
Daniel R Luedtke, Beverly Hills, MI (US);
Nitinkumar Patel, Oakland, MI (US);
Mustafa Mohamadian, Birmingham, MI (US);
Lakshmi Narayanan Srivatchan, Auburn Hills, MI (US);
Abstract
A sensorless position estimation and control system and method for a permanent magnet electric motor of a powertrain system of a vehicle involve determining a reference torque to be achieved by the electric motor based on a set of vehicle operating parameters, determining a reference current magnitude to achieve the determined reference torque using a lookup table, determining current commands for the electric motor based on the determined reference current magnitude and a fixed reference current angle, injecting a high frequency voltage into a voltage control loop for the electric motor and estimating, by the controller, a position of a rotor of the electric motor thereafter, and controlling a current provided to the electric motor based on the determined current commands and the estimated rotor position.