Ford Global Technolgoies, LLC

Yue Nie

Michael W Degner

Chris Wolf

Christopher M Wolf

Monty J Anderson

Seth Avery

Systems and methods for commanding an electric drive system for an electric or hybrid vehicle are described. In one example, the drive system is commanded by a controller that supplies a pulsed torque command that varies in frequency as a function of time when a driver of a vehicle requests a constant driver demand torque.

Methods and system for improving electric machine efficiency

Systems and methods for commanding an electric drive system for an electric or hybrid vehicle are described. In one example, the drive system is commanded by a controller that supplies a pulsed torque command that varies in magnitude as a function of time when a driver of a vehicle requests a constant driver demand torque.

Pulsed torque command with adjustable magnitude for electric machine torque control

Methods and systems are provided for adapting pulse width modulation with randomized zero-sequence components for control of an electrified powertrain of a vehicle. In one example, a method may include determining a zero-sequence voltage of an electric machine of the vehicle based on a random distribution, and adjusting a voltage reference signal of the electric machine based on the determined zero-sequence voltage to decrease ambient acoustic noise in the vehicle. In this way, spectral energy dispersion of pulse width modulated control of the electric machine may be increased without affecting torque production of the electric machine.

Systems and methods for adapting pulse width modulation with randomized zero-sequence

This disclosure relates to an electrified vehicle and a method for providing driver feedback by producing a torque ripple. An exemplary electrified vehicle includes, among other things, an electric machine configured to generate a torque output, and a controller configured to selectively adjust the torque output to produce a torque ripple in response to a triggering event.

Electrified vehicle and method for providing driver feedback by producing torque ripple

A vehicle alert method includes, among other things, in response to an alert event, altering at least one characteristic of power delivered within an electrified vehicle powertrain to provide an alert. A vehicle alert assembly includes, among other things, a power characteristic control system that, in response to an alert event, alters at least one characteristic of power delivered within an electrified vehicle powertrain to provide alert.

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Ann Arbor, MI, United States of America

Yue Nie