Proceedings ArticleDOI
Elimination of discrete position sensor and current sensor in switched reluctance motor drives
Mehrdad Ehsani,Iqbal Husain,Ashok B. Kulkarni +2 more
- Vol. 28, Iss: 1, pp 128-135
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TLDR
In this paper, a low-cost position-sensing scheme using stator inductance measurement is presented, where an analog electronic technique can be applied to measure the inductance of a nonconducting phase by using a linear frequency modulated (FM) converter.Abstract:
Shaft position sensing is essential in switched reluctance motors (SRMs) in order to synchronize the phase excitation pulses to the rotor position. In order to implement closed loop torque control, current sensors are also unavoidable. These sensors can constitute a substantial portion of the total system cost and tend to reduce system reliability. A low-cost position-sensing scheme using stator inductance measurement is presented. An analog electronic technique can be applied to measure the inductance of a nonconducting phase by using a linear frequency modulated (FM) converter. The output of the FM converter is decoded to get the shaft position signal. The control functions and converter switching signals are processed in a low-cost microcontroller. The discrete current sensors for closed-loop operation have been eliminated by using MOS-gated power switches with integrated current sensing capability. The combination of the above two schemes resulted in a totally sensorless SR motor drive. >read more
Citations
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Journal ArticleDOI
Overview of Electric Motor Technologies Used for More Electric Aircraft (MEA)
TL;DR: The analysis suggests that the dual (or triple) three-phase PMAC motor drive may be a favored choice for general aerospace applications, striking a balance between necessary redundancy and undue complexity, while maintaining a balanced operation following a failure.
Proceedings ArticleDOI
Review of sensorless methods for brushless DC
TL;DR: Methods explained are state-of-the-art, including those using: measured currents, voltages, fundamental machine equations and algebraic manipulations; observers; the back-EMF method; sensorless starting techniques; and novel techniques not in the previous categories.
Proceedings ArticleDOI
A new algorithm for sensorless operation of permanent magnet motors
Nesimi Ertugrul,P.P. Acarnley +1 more
TL;DR: In this paper, the authors proposed and investigated a new algorithm for shaft position sensorless operation of permanent magnet motors, based on flux linkage and line current estimation, which has a two current-loop structure, with the outer loop used to correct the position, and the inner loop utilised to correct estimated flux linkage.
Journal ArticleDOI
Inductance model-based sensorless control of the switched reluctance motor drive at low speed
TL;DR: In this paper, a sensorless control scheme for the switched reluctance motor (SRM) drive at low speed is presented, where the incremental inductance of each active phase is estimated using the terminal measurement of this phase.
Journal ArticleDOI
Elimination of position sensors in switched reluctance motor drives: state of the art and future trends
Mehrdad Ehsani,Babak Fahimi +1 more
TL;DR: This paper covers the range of topics related to sensorless control of switched reluctance motor (SRM) drives from their fundamentals to their limitations and state of the art and future trends to help the reader develop a systematic understanding of the sensorless techniques that have been developed over the past two decades.
References
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Journal ArticleDOI
Variable-speed switched reluctance motors
TL;DR: In this article, the theory and potential of a family of doubly salient electronically-switched reluctance motors is explored. But the most recent prototype has achieved a continuous rating which is 1.4 times that of the equivalent induction motor.
Journal ArticleDOI
Detection of Rotor Position in Stepping and Switched Motors by Monitoring of Current Waveforms
TL;DR: In this paper, the rotor position was detected by monitoring the winding currents of the rotor rotor in a helicopter or series-resistance drive over the complete speed range of a stepping motor.
Journal ArticleDOI
Microcomputer Control of Switched Reluctance Motor
TL;DR: A microcomputer-based four-quadrant control system of a switched reluctance motor is described, which incorporates a startup operation, sequencing, and synchronized angle steering control.
Journal ArticleDOI
Development of a Unipolar Converter for Variable Reluctance Motor Drives
TL;DR: In this article, a C-dump converter for switching reluctance motors has been proposed, where the trapped energy is dumped in a capacitor and then returned to the dc source, using a chopper to recover the energy.
Journal ArticleDOI
A simple motion estimator for variable-reluctance motors
W.D. Harris,Jeffrey H. Lang +1 more
TL;DR: In this article, a simple motion estimator for inverter-driven variable-reluctance motors is presented, which probes unexcited phases with short voltage pulses from the inverter, and evaluates the resulting currents to measure the phase inductances.