Observers for sensorless synchronous motor drives: framework for design and analysis

This paper deals with the speed and position estimation for synchronous reluctance motors (SyRMs) and interior permanent-magnet synchronous motors (IPMs). A unified design and analysis framework for a class of back-electromotive-force (back-EMF)-based observers is developed and the links between apparently different estimation methods are brought out. State observers equipped with a speed-adaptation law are shown to be mathematically equivalent to voltage-model-based flux observers equipped with a position-tracking loop. The error signal driving the adaptation law or the tracking loop is presented in a generalized form. Using the framework, a stabilizing gain design is reviewed and detailed design guidelines are given. Selected observer designs are experimentally evaluated using a 6.7-kW SyRM drive and a 2.2-kW IPM drive.

Keywords

observers, rotors, stators, synchronous motors, mathematical model, estimation error

DOI

10.1109/TIA.2018.2858753

Citation

Hinkkanen , M , Saarakkala , S E , Awan , H A A , Mölsä , E & Tuovinen , T 2018 , ' Observers for sensorless synchronous motor drives: framework for design and analysis ' , IEEE Transactions on Industry Applications , vol. 54 , no. 6 , pp. 6090-6100 . https://doi.org/10.1109/TIA.2018.2858753

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-201808084535

Collections

[article-cris] Sähkötekniikan korkeakoulu / ELEC

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