Mathekga, Mmamolatelo EAdemi, SMcMahon, RA2020-08-192020-08-192019-12Mathekga, M.E., Ademi, S. & McMahon, R.A. 2019. Brushless doubly fed machine magnetic field distribution characteristics and their impact on the analysis and design. IEEE Transactions on Energy Conversion, vol 34(4), pp. 2180-21880885-89691558-0059DOI: 10.1109/TEC.2019.2939183https://ieeexplore.ieee.org/document/8823005https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8823005http://hdl.handle.net/10204/11546Copyright: 2019, Institute of Electrical and Electronics Engineers. Due to copyright restrictions, the attached PDF file contains the abstract of the full-text item. For access to the full-text item, please consult the publisher's website.This paper contributes to the characterisation of the brushless doubly fed induction machine (BDFIM), which is attractive as a variable speed generator in applications (off-shore wind turbine) with minimum maintenance requirements. The BDFIM has two three-phase stator windings of different pole numbers housed within the same stator slots and a short-circuited rotor winding capable of coupling fields of different pole numbers. The stator windings and rotor winding create a magnetic field distribution with a range of characteristics different to those of conventional induction machines. This paper presents an analysis to identify the field characteristics and discusses their impact on the analysis and design of the BDFIM. The characteristics are determined from an analysis of the sum of two rotating sinusoidal field waveforms and confirmed by comparison with time-stepping finite element results and measured magnetic flux density data.enBrushless doubly fed machinesBDFMCore lossField distributionFlux densityRotor designsStanding wavesArticleMathekga, M. E., Ademi, S., & McMahon, R. (2019). Brushless doubly fed machine magnetic field distribution characteristics and their impact on the analysis and design. http://hdl.handle.net/10204/11546Mathekga, Mmamolatelo E, S Ademi, and RA McMahon "Brushless doubly fed machine magnetic field distribution characteristics and their impact on the analysis and design." (2019) http://hdl.handle.net/10204/11546Mathekga ME, Ademi S, McMahon R. Brushless doubly fed machine magnetic field distribution characteristics and their impact on the analysis and design. 2019; http://hdl.handle.net/10204/11546.TY - Article AU - Mathekga, Mmamolatelo E AU - Ademi, S AU - McMahon, RA AB - This paper contributes to the characterisation of the brushless doubly fed induction machine (BDFIM), which is attractive as a variable speed generator in applications (off-shore wind turbine) with minimum maintenance requirements. The BDFIM has two three-phase stator windings of different pole numbers housed within the same stator slots and a short-circuited rotor winding capable of coupling fields of different pole numbers. The stator windings and rotor winding create a magnetic field distribution with a range of characteristics different to those of conventional induction machines. This paper presents an analysis to identify the field characteristics and discusses their impact on the analysis and design of the BDFIM. The characteristics are determined from an analysis of the sum of two rotating sinusoidal field waveforms and confirmed by comparison with time-stepping finite element results and measured magnetic flux density data. DA - 2019-12 DB - ResearchSpace DP - CSIR KW - Brushless doubly fed machines KW - BDFM KW - Core loss KW - Field distribution KW - Flux density KW - Rotor designs KW - Standing waves LK - https://researchspace.csir.co.za PY - 2019 SM - 0885-8969 SM - 1558-0059 T1 - Brushless doubly fed machine magnetic field distribution characteristics and their impact on the analysis and design TI - Brushless doubly fed machine magnetic field distribution characteristics and their impact on the analysis and design UR - http://hdl.handle.net/10204/11546 ER -