SYSTEM AND METHOD FOR IN-VEHICLE RESOLVER ALIGNMENT
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United States of America
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Jan 2, 2020
app pub date -
Jun 28, 2018
filing date -
Jun 28, 2018
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Abstract
An electric drive system for a vehicle includes a speed/position feedback device coupled to an electric machine and configured to provide an index pulse. The system further includes an inverter having a line voltage sensor. The system includes a controller programmed to, responsive to the electric machine rotating at a generally constant speed without commanding the inverter, generate a resolver offset from a time difference between a zero crossing of a line voltage and the index pulse and operate the inverter according to the resolver offset.
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