Systems and methods for adapting pulse width modulation with randomized zero-sequence
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United States of America Patent
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Jan 16, 2024
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Aug 11, 2022
app pub date -
Feb 5, 2021
filing date -
Feb 5, 2021
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Abstract
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.
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