Abstract
A new method of the 6i order torque ripple is presented for calculating the 6i order torque ripple of PMSM which causes auto-body structure vibration and noise in electric vehicles. According to magnetic field trapezoidal distribution characteristics in PMSM for distribution electric drive vehicle, radial flux density of permanent magnet in uniform air gap is expanded to Fourier series. With Blondel-Park Transformation, the phase inductive magnetic flux linkage and voltages in abc-coordinate are transformed to the value in dq0-coordinate. The presented calculation method explains 6i order vibration of PMSM for distributed drives. The obtained torque waveforms are in good agreement with those calculated by 2D finite element method, which proves the accuracy and efficiency of the method.
| Original language | English |
|---|---|
| Pages (from-to) | 756-761 |
| Number of pages | 6 |
| Journal | Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis |
| Volume | 32 |
| Issue number | 5 |
| State | Published - Oct 2012 |
| Externally published | Yes |
Keywords
- 6i order electromagnetic torque
- Analytical calculation
- Electric vehicle
- Permanent magnet synchronous machine
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