Closed-Loop Adaptive High-Starting Torque Scalar Control Scheme for Induction Motor Variable Speed Drives

Juan Carlos Travieso-Torres, Manuel A. Duarte-Mermoud, Matías Díaz, Camilo Contreras-Jara and Francisco Hernández
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Juan Carlos Travieso-Torres: Department of Industrial Technologies, University of Santiago de Chile, Santiago 9170125, Chile
Manuel A. Duarte-Mermoud: Facultad de Ingeniería y Arquitectura, Universidad Central de Chile, Av. Santa Isabel 1186, Santiago 8330601, Chile
Matías Díaz: Department of Electrical Engineering, University of Santiago de Chile, Santiago 9170125, Chile
Camilo Contreras-Jara: Department of Industrial Technologies, University of Santiago de Chile, Santiago 9170125, Chile
Francisco Hernández: Department of Industrial Technologies, University of Santiago de Chile, Santiago 9170125, Chile

Energies, 2022, vol. 15, issue 10, 1-15

Abstract: This article proposes a closed-loop (CL) high-starting torque (HST) scalar control scheme (SCS) for induction motors (IM). It endows the recently proposed HST-SCS with high-output torque capability beyond starting after using an outer speed control loop feeding an inner current control loop with adaptive controllers. Presenting a cascade normalized adaptive passivity-based controller (N-APBC) for nonlinear systems encompassing the IM allows obtaining this result. It extends the normalized adaptive controller for the cascade case. As a result, it keeps the HST-SCS simple control scheme without needing variable observers or parameter estimators and employing tuning information only from the motor nameplate and datasheet. Test bench experiments with a 10 HP motor validate the proposal’s effectiveness. Comparative experimental results show that the CL HST-SCS has a required stator phase voltage lower than HST-SCS. The CL HST-SCS applies the adaptive starting voltage curve for a more extended time than HST-SCS, from the start to 1.9 s versus 1.2 s, respectively. Hence, CL HST-SCS assures HST not only for starting but almost up to 600 rpm, resulting in a smoother transient behavior than HST-SCS under this speed.

Keywords: adaptive control; induction motors; nonlinear dynamical systems; variable speed drives (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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