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A Real-Time SOSM Super-Twisting Technique for a Compound DC Motor Velocity Controller

Author

Listed:
  • Onofre A. Morfin

    (Departamento de Ingeniería Eléctrica y Computación, Instituto de Ingeniería y Tecnología, Universidad Autónoma de Ciudad Juárez, Chihuahua 32310, Mexico)

  • Carlos E. Castañeda

    (Centro Universitario de los Lagos, Universidad de Guadalajara, Lagos de Moreno 47460, Mexico)

  • Antonio Valderrabano-Gonzalez

    (Facultad de Ingeniería, Universidad Panamericana, Zapopan 45615, Mexico)

  • Miguel Hernandez-Gonzalez

    (Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66450, Mexico)

  • Fredy A. Valenzuela

    (División Académica de Ingeniería y Arquitectura, Universidad Juárez Autónoma de Tabasco, Cunduacán 86040, Mexico)

Abstract

In this paper, a real-time robust closed-loop control scheme for controlling the velocity of a Direct Current (DC) motor in a compound connection is proposed. This scheme is based on the state-feedback linearization technique combined with a second-order sliding mode algorithm, named super-twisting, for stabilizing the system and achieving control goals. The control law is designed to track a periodic square reference signal, being one of the most severe tests applied to closed-loop systems. The DC motor drives a squirrel-cage induction generator which represents the load; this generator must work above the synchronous velocity to deliver the generated power towards the grid. A classical proportional-integral (PI) controller is designed for comparison purposes of the time-domain responses with the proposed second-order sliding mode (SOSM) super-twisting controller. This robust controller uses only a velocity sensor, as is the case of the PI controller, as the time derivative of the velocity tracking variable is estimated via a robust differentiator. Therefore, the measurements of field current and stator current, the signal from a load torque observer, and machine parameters are not necessary for the controller design. The validation and robustness test of the proposed controller is carried out experimentally in a laboratory, where the closed-loop system is subject to an external disturbance and a time-varying tracking signal. This test is performed in real time using a workbench consisting of a DC motor—Alternating Current (AC) generator group, a DC/AC electronic drive, and a dSPACE 1103 controller board.

Suggested Citation

  • Onofre A. Morfin & Carlos E. Castañeda & Antonio Valderrabano-Gonzalez & Miguel Hernandez-Gonzalez & Fredy A. Valenzuela, 2017. "A Real-Time SOSM Super-Twisting Technique for a Compound DC Motor Velocity Controller," Energies, MDPI, vol. 10(9), pages 1-18, August.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:9:p:1286-:d:110222
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    Citations

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    Cited by:

    1. Onofre A. Morfin & Riemann Ruiz-Cruz & Jesus I. Hernández & Carlos E. Castañeda & Reymundo Ramírez-Betancour & Fredy A. Valenzuela-Murillo, 2021. "Real-Time Sensorless Robust Velocity Controller Applied to a DC-Motor for Emulating a Wind Turbine," Energies, MDPI, vol. 14(4), pages 1-15, February.
    2. Zhigang Gao & Qi Lu, 2017. "Using an Integrated Script Control Unit (ISCU) to Assist the Power Electronics Education," Energies, MDPI, vol. 10(11), pages 1-19, November.
    3. Nicolás Toro-García & Yeison A. Garcés-Gómez & Fredy E. Hoyos, 2019. "Discrete and Continuous Model of Three-Phase Linear Induction Motors “LIMs” Considering Attraction Force," Energies, MDPI, vol. 12(4), pages 1-11, February.
    4. Rajko Svečko & Dušan Gleich & Amor Chowdhury & Andrej Sarjaš, 2019. "Sub-Optimal Second-Order Sliding Mode Controller Parameters’ Selection for a Positioning System with a Synchronous Reluctance Motor," Energies, MDPI, vol. 12(10), pages 1-22, May.

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