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Sensorless torque control of PM motor using modified HF injection method for audible noise reduction
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| Author(s) |
Hui JIANG, Mark SUMNER |
| Abstract |
A random high frequency (HF) injection sensorless vector control is proposed for a low voltage highcurrent permanent magnet (PM) motor. By spreading the frequency of the injected components in arandom manor, audible frequencies due to the injection can also be spread over a wide range offrequencies, reducing the perception of the audible noise whilst achieving comparable positionestimation to a fixed frequency injection method. Measurements of sound level using a commercialsound meter have been compared for both fixed and random HF injection methods to demonstrate thechange in audible noise. |
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| Filename: | 0553-epe2011-full-14340017.pdf |
| Filesize: | 236.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2012-01-26 by System |
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