The paper proposes a sensorless technique for standstill self-commissioning of synchronous reluctance machines. Previous works have demonstrated the potential of simultaneous excitation of $d$ and $q$ axis with hysteresis square-wave voltage injection for the exploration of current plane with insignificant rotor movement. The proposed structure retains the hysteresis control for $q$ axis while $i_d$ is closed loop controlled using a weak PI regulator. Akin to the parking technique, a DC current is imposed in a fixed reference frame to inhibit any rotor movement and realize the self-locking mechanism. This permits systematic inspection of the $dq$ current plane for accurate cross-saturation modeling. In addition, a new approach for the identification of cross-saturation in $d$ axis from the high frequency component in $i_d$ current is developed. The experimental tests on 1.1 kW synchronous reluctance motor test bench prove the validity of proposed technique.
Sensorless Self-Commissioning of Synchronous Reluctance Machine with Rotor Self-Locking Mechanism / Varatharajan, Anantaram; Pescetto, Paolo; Pellegrino, Gianmario. - ELETTRONICO. - (2019), pp. 812-817. (Intervento presentato al convegno IEEE Energy Conversion Congress and Exposition (ECCE 2019) tenutosi a Baltimore) [10.1109/ECCE.2019.8913023].
Sensorless Self-Commissioning of Synchronous Reluctance Machine with Rotor Self-Locking Mechanism
anantaram varatharajan;paolo pescetto;Gianmario pellegrino
2019
Abstract
The paper proposes a sensorless technique for standstill self-commissioning of synchronous reluctance machines. Previous works have demonstrated the potential of simultaneous excitation of $d$ and $q$ axis with hysteresis square-wave voltage injection for the exploration of current plane with insignificant rotor movement. The proposed structure retains the hysteresis control for $q$ axis while $i_d$ is closed loop controlled using a weak PI regulator. Akin to the parking technique, a DC current is imposed in a fixed reference frame to inhibit any rotor movement and realize the self-locking mechanism. This permits systematic inspection of the $dq$ current plane for accurate cross-saturation modeling. In addition, a new approach for the identification of cross-saturation in $d$ axis from the high frequency component in $i_d$ current is developed. The experimental tests on 1.1 kW synchronous reluctance motor test bench prove the validity of proposed technique.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2738692