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Title: Inverter non-linearity effects on a sensorless PMSM drive without additional test signal injection and zero speed operation
Authors: Raute, Reiko
Caruana, Cedric
Spiteri Staines, Cyril
Cilia, Joseph
Sumner, Mark
Asher, Greg M.
Keywords: PWM power converters
Variable speed drives
Permanent magnet motors
Vector control
Issue Date: 2008
Publisher: Institute of Electrical and Electronics Engineers Inc.
Citation: Raute, R., Caruana, C., Staines, C. S., Cilia, J., Sumner, M., & Asher, G. (2008). Inverter non-linearity effects on a sensorless PMSM drive without additional test signal injection and zero speed operation. IEEE International Symposium on Industrial Electronics, Cambridge. 552-557.
Abstract: It has been well established in the literature that inverter non–linearity effects afflict saliency based sensorless drives operating in the low and zero speed region. The inverter non–linearity leads to the generation of signals that corrupt the useful position signals. In certain cases, the magnitude of the former signals is comparable if not higher to the latter. Various compensation techniques to overcome this effect have been published in the literature. This paper is concerned with the sensorless technique utilizing the current derivatives during the zero voltage vector states without additional test signal injection, as proposed in [1]. This paper incorporates the varying on–state resistance of the inverter power devices in the system model to explain the corrupting signal experienced in [1]. Knowledge of the source of the corrupting signals facilitates compensation and determines its applicability. The same effect will also be present in sensorless techniques utilizing signal injection although its influence might be less significant due to the magnitude of the injected signal.
Description: The authors would like to acknowledge the support provided by the European Commission under a Marie Curie Research Training Network for realizing this work under the MEST-CT-2004-504243 Research Project.
Appears in Collections:Scholarly Works - FacEngIEPC

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