Journal of Electrical Engineering and Technology

  • 제3권2호
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  • Pages.224-234
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  • 2008
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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MRAS Based Sensorless Control of a Series-Connected Five-Phase Two-Motor Drive System

  • Khan, M. Rizwan (Dept. of Electrical Engineering, Aligarh Muslim University) ;
  • Iqbal, Atif (Dept. of Electrical Engineering, Aligarh Muslim University)
  • 발행 : 2008.06.30
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초록

Multi-phase machines can be used in variable speed drives. Their applications include electric ship propulsion, 'more-electric aircraft' and traction applications, electric vehicles, and hybrid electric vehicles. Multi-phase machines enable independent control of a few numbers of machines that are connected in series in a particular manner with their supply being fed from a single voltage source inverter(VSI). The idea was first implemented for a five-phase series-connected two-motor drive system, but is now applicable to any number of phases more than or equal to five-phase. The number of series-connected machines is a function of the phase number of VSI. Theoretical and simulation studies have already been reported for number of multi-phase multi-motor drive configurations of series-connection type. Variable speed induction motor drives without mechanical speed sensors at the motor shaft have the attractions of low cost and high reliability. To replace the sensor, information concerning the rotor speed is extracted from measured stator currents and voltages at motor terminals. Open-loop estimators or closed-loop observers are used for this purpose. They differ with respect to accuracy, robustness, and sensitivity against model parameter variations. This paper analyses operation of an MRAS estimator based sensorless control of a vector controlled series-connected two-motor five-phase drive system with current control in the stationary reference frame. Results, obtained with fixed-voltage, fixed-frequency supply, and hysteresis current control are presented for various operating conditions on the basis of simulation results. The purpose of this paper is to report the first ever simulation results on a sensorless control of a five-phase two-motor series-connected drive system. The operating principle is given followed by a description of the sensorless technique.

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참고문헌

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피인용 문헌

  1. Fuzzy logic based controller for five-phase induction motor drive system vol.51, pp.4, 2012, https://doi.org/10.1016/j.aej.2012.10.005
  2. Extended Kalman filter based speeds estimation of series-connected five-phase two-motor drive system vol.17, pp.7, 2009, https://doi.org/10.1016/j.simpat.2009.05.007
  3. Extended Kalman Filter Based Sliding Mode Control of Parallel-Connected Two Five-Phase PMSM Drive System vol.7, pp.2, 2018, https://doi.org/10.3390/electronics7020014