Flux observer algorithms for direct torque control of Brushless Doubly-Fed Reluctance machines

Abstract

Citation: Chaal, Hamza and Jovanovic, Milutin (2009) Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.)

A Comprehensive Review on Brushless Doubly-Fed Reluctance Machine

“…The negative case (−), i.e., Equations (20)- (22), can be disregarded. This note is considered in problem formulation [2,7,48,50,[60][61][62][63][64][65][66][67][68]. The electro-mechanical energy conversion occurs under the following conditions, and this shows the share of each winding [60].…”

“…The conventional DTC-based scheme is subjected to flux estimation issues and can deteriorate the machine operation under the condition of maximum torque per inverter ampere. Accordingly, this issue at low torque and current levels for BDFRM is solved in [67] by flux-oriented approaches using sliding mode observer and Kalman filter. A DTC strategy appropriate for the low-adjustable-frequency operation of the BDFRM is presented in [123].…”

Transient Model of Brushless Doubly Fed Reluctance Machine using ABC Reference Frame

“…Where, _ , d are half of effective number of turns of primary and secondary windings respectively and equal to f g × , f g is winding factor and is number of actual number of turns. Using (1),(15), and (16 to 21); Inductances formulas for BDFRM can be obtained as below:C 44 = C 55 = C 66 = C [_(22) C 77 = C 88 = C 99 = C [d (23) C 45 = C 46 = C 56 = C 54 = C 64 = C 65 = ) C [_ (24) C 78 = C 79 = C 89 = C 87 = C 98 = C 89 = ) C [d (25) C 47 = C 74 = C _d[7i cos ` Z [ (26) C 59 = C 95 = C _d[7i cos ` Z [ (27) C 68 = C 86 = C _d[7i cos ` Z [ (28) C 58 = C 85 = C _d[7i cos a` Z [ C 57 = C 75 = C _d[7i cos a` Z [ _ = U V >W _ ) jk, C [d = U V >W d ) jk, and C _d[7i = 0.5 k>W _ d . From (13), (14), (26)-34) it found ,C DE .…”