S.R. Damugatla

University of Arkansas, Fayetteville, AR, United States

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Publications (2)0 Total impact

  • R.A. McCann, S.R. Damugatla
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    ABSTRACT: Interior permanent magnet (IPM) synchronous motors have advantages such as high torque and power density over a wide speed range when compared to conventional permanent magnet, synchronous reluctance and induction machine technologies. However, the introduction of IPM machines into industrial and commercial products has been limited due to the complexity of controlling the nonlinear reluctance torque. This paper presents an analysis of the use of micro-electromechanical sensors (MEMS) to detect magnetic flux levels in the rotor of an interior permanent magnet synchronous motor. It is found that a small network of rotor flux sensors yields an estimate of the instantaneous torque. This provides a method for controlling the net electrical torque of the IPM machine thereby overcoming a significant obstacle in the industrial and commercial adoption of IPM motor technology.
    Industry Applications Conference, 2005. Fourtieth IAS Annual Meeting. Conference Record of the 2005; 11/2005
  • R.A. McCann, S.R. Damugatla
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    ABSTRACT: Hybrid reluctance permanent magnet (HRPM) motors have potential advantages for electric vehicle propulsion. However, their introduction into practical applications has been limited due to the complexity of controlling the nonlinear reluctance torque. This paper presents the results of an investigation into the use of micro-electromechanical sensors (MEMS) to detect magnetic flux levels in the rotor of a hybrid reluctance permanent magnet motor. It is found that a small network of rotor flux sensors provides an accurate estimate of the instantaneous reluctance effect torque in the machine. This provides a method for controlling the torque of the HRPM machine by separating the linear permanent magnet portion from the nonlinear reluctance torque component, thereby overcoming a significant obstacle in the commercial adoption of HRPM technology.
    Vehicle Power and Propulsion, 2005 IEEE Conference; 10/2005