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Using Volt-sec. Sensing to Extend the Low Speed Range and the Disturbance Rejection Capability of Back-EMF-based Self-Sensing Induction Machine Drives
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| Author(s) |
Robert LORENZ |
| Abstract |
This paper introduces usage of Volt-sec. sensing in back-EMF-based self-sensing (sensorless) induction machine drives. In practice, both inverter non-linearity and dc bus voltage affect back-EMF estimation accuracy, and therefore self-sensing performance. A real-time Volt-sec. sensing scheme to measure the terminal Volt-sec. vector for each switching period is introduced in the paper. The measured Volt-sec. information can be used in the back-EMF state filter such that the effects from inverter non-linearity and dc bus voltage measurement errors are mitigated. The resulting extended low speed range and enhanced disturbance rejection capability are quantified via experimental evaluation. |
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| Filename: | 0347-epe2016-full-04203143.pdf |
| Filesize: | 513.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2017-04-13 by System |
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