Damien J. Hill

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Torque ripple exists at the output of permanent magnet synchronous motors (PMSMs) as a result of current error, non-sinusoidal back-EMF and cogging torque. Since part of the cogging torque component is based on manufacturing error, motor design may not eliminate all torque ripple. One possible method for reducing torque ripple is by injecting the inverse of(More)
Torque ripple exists at the output of permanent magnet synchronous motors (PMSMs) as a result of current measurement error, non-sinusoidal back-electromotive force (EMF), and cogging torque. Acoustic emissions caused by torque ripple coupling through the mechanical system and interacting with the motor housing limit the applications available to PMSMs.(More)
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