dq modeling of five phase synchronous reluctance machines including third harmonic of air-gap MMF

Toliyat, H.A.; Rahimian, Mina M.; Lipo, T.Α.

doi:10.1109/ias.1991.178160

Cited by 32 publications

(17 citation statements)

References 1 publication

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“…Some simulation and experimental results based on a five-phase, 4-pole, 36 slots interior permanent magnet generator are presented. Although the model and computer simulations of multi-phase interior permanent magnet machines with balanced windings with integer number of slots per phase have been presented in the literature, there appears to be no work both on the design and analysis of the multi-phase machines (generators) with non-integer number of slots per pole [1][2][3]. However, there are published papers on the analysis and control of faulted multi-phase machines with balanced winding distributions [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a five-phase interior permanent magnet generator with a non-integer number of stator slots per phase

Ojo

Karugaba

et al. 2009

2009 IEEE International Electric Machines and Drives Conference

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Traditional electric machine design requiring the balancing of the phases both in phase voltage magnitudes and the angles between adjacent phases informs that the number of stator slots per phase must be an integer. There are situations however, where it is cheaper to use existing laminations for designs with non-integer number of slots per phase to build generators for specialized applications especially for DC power. In such cases a multi-phase design ensures a measure of fault tolerance and the unbalances in the phase angles between the winding phases have little effect on the quality of the output DC voltage. The methodology for the design of a five phase, 4-pole interior permanent magnet (IPM) generator using 36 slots as a source of DC power is outlined. Experimental results for the operation under healthy and faulty conditions (one and two phase windings open) are presented for verification of fault tolerance of multiphase machines.

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Section: Introductionmentioning

confidence: 99%

Design and analysis of a five-phase interior permanent magnet generator with a non-integer number of stator slots per phase

Ojo

Karugaba

et al. 2009

2009 IEEE International Electric Machines and Drives Conference

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“…Traditionally, approximations are made to the stator winding distribution and air-gap length as functions of angular displacement around the stator. These expressions are then used to determine the inductance values including the necessary harmonic components [6,8].…”

Section: Generalized Equationsmentioning

confidence: 99%

“…The scaling function for voltage error is, , T(α). The ideal voltage required to maintain the current reference at its desired value is calculated using the generalized voltage equations (2)(3)(4)(5)(6)(7)(8)(9). The inverter switching configuration is then determined by choosing the best voltage vector on the basis of scaled voltage error.…”

Section: B Transformed Frame Controllermentioning

confidence: 99%

“…The synchronous reluctance motor (Syncrel) continues to gain increasing research interest as an alternative to the ac induction motor drive [1][2][3][4][5][6][7][8][9]. Advantages of the Syncrel include its simple rugged rotor structure, comparatively low rotor inertia, high torque density and the absence of rotor windings leading to reduced losses.…”

Section: Introductionmentioning

confidence: 99%

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Performance evaluation of a nine-phase synchronous reluctance drive

Coates

Platt²,

Gosbell³

Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248)

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This paper describes the performance of an experimental 5kW nine-phase synchronous reluctance motor (Syncrel) drive. Increasing the number of phases of the Syncrel above three allows the stator MMF's to be shaped, producing significantly greater torque / RMS ampere in the same volume machine. Generalized d-q voltage and torque equations are derived for the nine-phase Syncrel. These demonstrate that harmonic direct and quadrature components of current contribute to torque production in the machine and can be controlled by applying appropriate stator voltages. A fieldoriented controller is described and implemented using a TMS320C32 digital signal processor board. The controller designates portions of the stator winding as supplying either direct or quadrature excitation. A simple inverter switching strategy is used to control the phase currents to their reference values. Experimental current regulation, speed response and torque measurements are presented from the drive. These results validate the system model and demonstrate the drive capability. 2041 0-7803-7116-X/01/$10.00 (C) 2001 IEEE

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“…Only a few authors such as Hamid A. Toliyat have made detailed research on the five-phase drive system. In [2][3][4][5][6] the control method and operation performance of the fivephase drive system are analyzed, and a kind of space vector PWM (SVPWM) method for five-phase inverter was proposed also [7,8]. This method (here we call it traditional SVPWM (TSVPWM) is in fact the application of the traditional three-phase SVPWM method, which using the two adjacent large vector adjective to compose reference vector.…”

Section: Introductionmentioning

confidence: 99%

A novel discontinuous space vector PWM control for multiphase inverter

Zhang

et al.

International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006.

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PWM control of multi-phase inverter is one of the key technologies in the ships electrical propulsion. In this paper, a novel discontinuous space vector PWM (DSVPWM) method of multiphase inverter is proposed by arranging the two zero vectors skillfully. Comparing with the continuous space vector PWM (CSVPWM) method the DSVPWM use only one zero vector in one switching period, so the switching loss is only four fifths of the CSVPWM. However, the output target line voltages of DSVPWM are still sine wave, the harmonic performance is excelled that of traditional SVPWM (TSVPWM) therefore. Several classic DSVPWM realization methods are given, and the operation characteristic, adapted load types and total harmonic distortion rate of them are analyzed and simulated.Index Terms--multiphase inverter; discontinuous space vector PWM; zero vector; total harmonic distortion rate

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dq modeling of five phase synchronous reluctance machines including third harmonic of air-gap MMF

Cited by 32 publications

References 1 publication

Design and analysis of a five-phase interior permanent magnet generator with a non-integer number of stator slots per phase

Design and analysis of a five-phase interior permanent magnet generator with a non-integer number of stator slots per phase

Performance evaluation of a nine-phase synchronous reluctance drive

A novel discontinuous space vector PWM control for multiphase inverter

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