Content

Publications

Books

  • Gieras, J.F., Wang, R-J., Kamper, M.J., Axial Flux Permanent Magnet Brushless Machines, (Second Edition) the Springer, 375 pages,
    ISBN 978-1-4020-6993-2, (2008) (incl. CD-ROM); doi: 10.1007/978-1-4020-8227-6 Springer Amazon Google Scholar
  • Gieras, J.F., Wang, R-J., Kamper, M.J., Axial Flux Permanent Magnet Brushless Machines, Kluwer Academic Publishers, Dordrecht,
    The Netherlands, 340 pages, ISBN 1-4020-2661-7, (2004); doi: 10.1007/1-4020-2720-6 Kluwer Amazon Google Scholar

Journals

  • Tlali, P.M., Wang, R-J., Gerber, S., Botha, C.D., Kamper, M.J., "Design and performance comparison of vernier and conventional PM synchronous wind generators", IEEE Transactions on Industry Applications, vol. 56, no. 3, pp. 2570--2579, May/Jun 2020; doi: 10.1109/ TIA.2020.2979111 download pdf
  • Sorgdrager, A.J., Wang, R-J., Grobler, A.J., "Multi-objective design of a line-start PM motor using the Taguchi method", IEEE Transactions
    on Industry Applications
    , vol. 54, no. 5, pp. 4167--4176, Sept.-Oct. 2018; doi: 10.1109/TIA.2018.2834306 download pdf
  • Matthee, A., Wang, R-J., Agenbach, C.J., Els, D.N.J., Kamper, M.J., "Evaluation of a magnetic gear for air-cooled condenser applications",
    IET Electric Power Applications, vol. 12, no. 5, pp. 677--683, May 2018; doi: 10.1049/iet-epa.2017.0714 download pdf
  • Gerber, S., Wang, R-J., "Cogging torque definitions of magnetic gears and magnetically geared machines", IEEE Transactions on Magnetics, vol. 54, no. 4, 8103209, April 2018; doi: 10.1109/TMAG.2017.2784823 download pdf
  • Chama, A., Gerber, S., Wang, R-J., "Newton-Raphson solver for finite element methods featuring nonlinear hysteresis models", IEEE Transactions on Magnetics, vol. 54, no. 1, 7400108, January 2018; doi: 10.1109/TMAG.2017.2761319 download pdf
  • Sorgdrager, A.J., Wang, R-J., Grobler, A.J., "Taguchi method in electrical machine design", SAIEE Africa Research Journal, vol. 108, no. 4,
    pp. 150--164, December 2017; doi: 10.23919/SAIEE.2017.8531928 open access
  • Wang, R-J., Matthee, A., Gerber, S., Tlali, P.M., "Calculation of torque performance of a novel magnetic planetary gear", IEEE Magnetics Letters, vol. 7, issue 1, 1303805, 2016; doi: 10.1109/LMAG.2016.2564948 download pdf
  • Tlali, P.M., Gerber, S., Wang, R-J., "Optimal design of an outer-stator magnetically geared permanent magnet machine", IEEE Transactions
    on Magnetics
    , vol. 52, no. 2, 8100610, February 2016; doi: 10.1109/TMAG.2015.2487886 download pdf
  • Chama, A., Sorgdrager, A.J., Wang, R-J., "Analytical synchronization analysis of line-start permanent magnet synchronous motors",
    Progress In Electromagnetics Research M, (PIER M), vol. 48, pp. 183--193, 2016; doi: 10.2528/PIERM16050311 open access
  • Gerber, S., Wang, R-J., "Design and evaluation of a magnetically geared PM machine", IEEE Transactions on Magnetics, vol. 51, no. 8,
    8107010, August 2015; doi: 10.1109/TMAG.2015.2421474 download pdf
  • Gerber, S., Wang, R-J., "Evaluation of movement facilitating techniques for finite element analysis of magnetically geared electrical machines", IEEE Transactions on Magnetics, vol. 51, no. 2, 7400206, February 2015; doi: 10.1109/TMAG.2014.2351787 download pdf
  • Wang, R-J., Brönn, L., Gerber, S., Tlali, P.M., "An axial flux magnetically geared PM wind generator", IEEJ Transactions on Electrical
    and Electronic Engineering
    , vol. 10, issue S1, pp. 123--132, October 2015; doi: 10.1002/tee.22173 download pdf
  • Wang, R-J., Gerber, S., "Magnetically geared wind generator technologies: opportunities and challenges", Applied Energy, vol. 136,
    pp. 817--826, Elsevier, November 2014; doi: 10.1016/j.apenergy.2014.07.079
  • Kamper, M.J., Wang, R-J., Rossouw, F.G., "Analysis and performance of axial flux permanent magnet machine with air-cored non-overlapping
    concentrated stator windings", IEEE Transactions on Industry Applications, vol. 44, no. 5, pp. 1495--1504, September/October 2008;
    doi: 10.1109/TIA.2008.2002183 download pdf
  • Kamper, M.J., Rasmeni, S., Wang, R-J., "Finite element time-step simulation of the switched reluctance machine drive under single pulse mode
    operation", IEEE Transactions on Magnetics, vol. 43, no. 7, pp. 3202--3208, July 2007; doi: 10.1109/TMAG.2007.892792 download pdf
  • Sibande, S.E., Kamper, M.J., Wang, R-J., "Design and performance evaluation of a medium power PM-assisted reluctance synchronous
    traction machine using bonded PM-sheets", SAIEE Africa Research Journal, vol. 97, no. 1, pp. 14--21, March 2006 open access
  • Wang, R-J., Kamper, M.J., Dobson, R.T., "Development of a thermofluid model for axial field permanent magnet machines", IEEE Transactions on Energy Conversion, vol. 20, no. 1, pp. 80--87, March 2005; doi: 10.1109/TEC.2004.837301 download pdf
  • Wang, R-J., Kamper, M.J., van der Westhuizen, K., Gieras, J.F., "Optimal design of a coreless stator axial field permanent magnet generator", IEEE Transactions on Magnetics, vol. 41, no. 1, pp. 55--64, January 2005; doi: 10.1109/TMAG.2004.840183 download pdf
  • Wang, R-J., Kamper, M.J., "Calculation of eddy current loss in axial field permanent magnet machine with coreless stator", IEEE Transactions on Energy Conversion, vol. 19, no. 3, pp. 532--538, September 2004; doi: 10.1109/TEC.2004.832043 download pdf
  • Wang, R-J., Mohellebi, H., Flack, T.J., Kamper, M.J., Buys, J.D., Feliachi, M., "Two dimensional Cartesian airgap element (CAGE) for dynamic FE modeling of electrical machines with a flat airgap", IEEE Transactions on Magnetics, vol. 38, no. 2, pp. 1357--1360, March 2002; doi: 10.1109/20.996024 download pdf
  • Wang, R-J., Dobson, R., Kamper, M.J., "Thermofluid analysis of an axial flux permanent magnet (AFPM) generator", SAIMechE. R & D Journal, vol. 17, no. 1, pp. 18--26, March 2001 (ISSN 0257-9669) (Silver medal prize from SA Institution of Mechanical Engineering)prize paper
  • Wang, R-J., Gieras, J.F., Ronda, J., "Analysis of forces in a hybrid linear stepping motor", Electromotion, vol. 4, no. 1-2, pp. 15--20,
    January-June 1997 (ISSN 1223 - 057X)
  • Li, D., Wang, R-J., "Analysis of waveguide to microstrip transition", Microwave and Optical Technology Letters, vol. 5, no. 3, pp. 128--130, March 1992; doi: 10.1002/mop.4650050310

Conferences

  • Tlali, P.M., Wang, R-J., "PM vernier machine for utility scale wind generator applications: design and evaluation", Proc. of XXIV International Conference on Electrical Machines, (ICEM), pp. 2637--2643, 23-26 August 2020, Gothenburg, Sweden (virtual conference)
  • Gerber, S., Wang, R-J., "Traction motor optimization using mesh reshaping for gradient evaluation", Proc. of XXIV International Conference on Electrical Machines, (ICEM), pp. 2546--2552, 23-26 August 2020, Gothenburg, Sweden (virtual conference)
  • Pastellides, S.G., Gerber, S., Wang, R-J., Kamper, M.J., "Design of a surface-mounted PM motor for improved flux weakening performance", Proc. of XXIV International Conference on Electrical Machines, (ICEM), pp. 1772--1778, 23-26 August 2020, Gothenburg, Sweden (virtual conference)
  • Botha, C.D., Kamper, M.J., Wang, R-J., Sorgdrager, A.J., "Force ripple and cogging force minimisation criteria of single-sided consequent-pole linear vernier hybrid machines", Proc. of XXIV International Conference on Electrical Machines, (ICEM), pp. 469--475, 23-26 August 2020, Gothenburg, Sweden (virtual conference)
  • Sorgdrager, A.J., Wang, R-J, Grobler, A.J., "Robust torque ripple mitigation of a line-start PMSM by means of the Taguchi method",
    2019 Southern African Universities Power Engineering Conference/Robotics and Mechatronics/Pattern Recognition Association
    of South Africa (SAUPEC/RobMech/PRASA)
    , pp. 259--264, 28-30 January 2019, Bloemfontein; doi: 10.1109/RoboMech.2019.8704771 download pdf
  • Gerber, S., Wang, R-J, "Reduction of inverter-induced shaft voltages using electrostatic shielding", 2019 Southern African Universities
    Power Engineering Conference/Robotics and Mechatronics/Pattern Recognition Association of South Africa (SAUPEC/RobMech/PRASA)
    , pp. 310--315, 28-30 January 2019, Bloemfontein; doi: 10.1109/RoboMech.2019.8704702 download pdf (Best paper prize)prize paper
  • Masuku, T.M., Wang, R-J, Botha, M., Gerber, S., "Design strategy of traction induction motors", 2019 Southern African Universities Power Engineering Conference/Robotics and Mechatronics/Pattern Recognition Association of South Africa (SAUPEC/RobMech/PRASA),
    pp. 316--321, 28-30 January 2019, Bloemfontein; doi: 10.1109/RoboMech.2019.8704761 download pdf
  • Pastellides, S., Gerber, S., Wang, R-J., "Design strategy and comparison of four PM motor topologies for a 2 kW traction application",
    2019 Southern African Universities Power Engineering Conference/Robotics and Mechatronics/Pattern Recognition Association of
    South Africa (SAUPEC/RobMech/PRASA)
    , pp. 358--363, 28-30 January 2019, Bloemfontein; doi: 10.1109/RoboMech.2019.8704829 download pdf
  • Gerber, S., Wang, R-J., "Comparison of three prototype flux-modulating permanent magnet machines", XXIII International Conference on Electrical Machines, (ICEM), pp. 2072--2078, 3-6 September 2018, Alexandroupoli, Greece; doi: 10.1109/ICELMACH.2018.8506736 download pdf
  • Agenbach, C.J., Els, D.N.J., Wang, R-J., Gerber, S., "Force and vibration analysis of magnetic gears", XXIII International Conference on Electrical Machines, (ICEM), pp. 752--758, 3-6 September 2018, Alexandroupoli, Greece; doi: 10.1109/ICELMACH.2018.8506690 download pdf
  • Tlali, P.M., Wang, R-J., Gerber, S., "Comparison of PM vernier and conventional synchronous 15 kW wind generators", Proc. of XXIII International Conference on Electrical Machines, (ICEM), pp. 2065--2071, 3-6 September 2018, Alexandroupoli, Greece; doi: 10.1109/ICELMACH.2018.8506882 download pdf
  • Sorgdrager, A.J., Wang, R-J., Grobler, A.J., "Design optimization of a line-start PMSM considering transient and steady-state performance objectives", Proc. of IEEE Energy Conversion Congress and Exposition, (ECCE), pp. 5057--5064, 1-5 October 2017, Cincinnati, USA;
    doi: 10.1109/ECCE.2017.8096853
  • Tlali, P.M., Wang, R-J., "Mass and volume optimization of a permanent magnet vernier machine", Proc. of the 25th Southern African Universities Power Engineering Conference, (SAUPEC), pp. 315--319, 30 Jan.-1 Feb. 2017, Stellenbosch download pdf
  • Chama, A, Gerber, S., Wang, R-J., "Formulation of an alternative analytical solution technique for magnetostatic field problems",
    Proc. of the 25th Southern African Universities Power Engineering Conference, (SAUPEC), pp. 305--308, 30 Jan-1 Feb 2017, Stellenbosch download pdf
  • Sorgdrager, A.J., Wang, R-J., Grobler, A.J., "Transient performance optimisation of line-start permanent magnet synchronous motors using Taguchi based regression rate method", Proc. of the 25th Southern African Universities Power Engineering Conference, (SAUPEC),
    pp. 94--99, 30 Jan.-1 Feb. 2017, Stellenbosch download pdf
  • Gerber, S., Wang, R-J., "Statistical analysis of cogging torque considering various manufacturing imperfections", XXII International
    Conference on Electrical Machines (ICEM)
    , pp. 2066--2072, Lausanne, Switzerland, 4-7 Sept. 2016; doi: 10.1109/ICELMACH.2016.7732807 download pdf
  • Chama, A., Sorgdrager, A.J., Wang, R-J., "Synchronization criteria of line-start permanent magnet synchronous motors: a revisit",
    Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Johannesburg, South Africa, 26-28 January 2016;
    doi: 10.13140/RG.2.1.3218.2803 download pdf
  • Tlali, P.M., van der Merwe, J.D.G., Wang, R-J., Gerber, S., "Design aspects of a magnetically geared permanent magnet machine with an
    outer-stator", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Johannesburg, South Africa, 26-28 January 2016; doi: 10.13140/RG.2.1.2693.9927 download pdf
  • Smit, Q., Sorgdrager, A.J., Wang, R-J., "Design and optimisation of a line-start synchronous reluctance motor", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Johannesburg, South Africa, 26-28 Jan. 2016; doi: 10.13140/RG.2.1.4266.8560 download pdf
  • Gerber, S., Wang, R-J., "Design and evaluation of a PM vernier machine", Proc. of IEEE Energy Conversion Congress and Exposition, (ECCE), pp. 5188--5194, Montreal, Canada, 20-24 September 2015; doi: 10.1109/ECCE.2015.7310390
  • Sorgdrager, A.J., Wang, R-J., Grobler, A.J., "Transient performance investigation and Taguchi optimization of an line-start PMSPM",
    Proc. of IEEE International Electrical Machines and Drives Conference, (IEMDC), Coeur d'Alene, Idaho, United States, pp. 590--595, 10-13 May 2015; doi: 10.1109/IEMDC.2015.7409118
  • Sorgdrager, A.J., Wang, R-J., Grobler, A.J., "Retrofit design of a line-start PMSM using the Taguchi method," Proc. of IEEE International Electrical Machines and Drives Conference, (IEMDC), Coeur d'Alene, Idaho, United States, pp. 489--495, 10-13 May 2015;
    doi: 10.1109/IEMDC.2015.7409103
  • Sorgdrager, A.J., Smith, R., Wang, R-J., "Rotor design of a line-start permanent magnet synchronous machine using the Taguchi method",
    Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Johannesburg, South Africa, pp. 227--232, 28-29 January 2015 download pdf (Best paper prize)prize paper
  • Sorgdrager, A.J., Wang, R-J., Pfeffer, A.K., "Optimisation of a line-start permanent magnet synchronous machine for a load specific application", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Johannesburg, pp. 216--220, 28-29 January 2015 download pdf
  • Matthee, A., Gerber, S., Wang, R-J., "A high performance concentric magnetic gear", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Johannesburg, South Africa, pp. 203--207, 28-29 January 2015; doi: 10.13140/RG.2.1.1493.6167 download pdf
  • Tlali, P.M., Wang, R-J., Gerber, S., "Magnetic gear technologies: a review", Proc. of International Conference on Electrical Machines, (ICEM), Berlin, Germany, pp. 544--550, 2-5 September 2014; doi: 10.1109/ICELMACH.2014.6960233
  • Gerber, S., Wang, R-J., "Analysis of the end-effects in magnetic gears and magnetically geared machines", Proc. of International Conference
    on Electrical Machines
    , (ICEM), Berlin, Germany, pp. 396--402, 2-5 September 2014; doi: 10.1109/ICELMACH.2014.6960211
  • Tlali, P.M., Gerber, S., Wang, R-J., "Gear ratio selection of an outer-stator magnetically geared machine", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Durban, South Africa, pp. 242--248, 30-31 January 2014 download pdf
  • Els, J.P., Sorgdrager, A.J., Wang, R-J., "A study of rotor topologies for line-start PM motors for cooling fan applications", Proc. of the
    Southern African Universities Power Engineering Conference
    , (SAUPEC), Durban, South Africa, pp. 284--289, 30-31 January 2014 download pdf
  • Gerber, S., Wang, R-J., "Implementation of moving band solver for finite element analysis of electrical machines", Proc. of the Southern
    African Universities Power Engineering Conference
    , (SAUPEC), Durban, South Africa, pp. 249--254, 30-31 January 2014;
    doi: 10.13140/RG.2.2.19859.89124 download pdf
  • Sorgdrager, A.J., Grobler, A.J., Wang, R-J., "Design procedure of a line-start permanent magnet synchronous machine", Proc. of the
    Southern African Universities Power Engineering Conference
    , (SAUPEC), Durban, South Africa, pp. 307--314, 30-31 January 2014 download pdf
  • Wang, R-J., Brönn, L., Gerber, S., Tlali, P.M., "Design and evaluation of a disc-type magnetically geared PM wind generator", Proc. of IEEE International Conference on Power Engineering, Energy and Electrical Drives, (POWERENG), Istanbul, Turkey, pp. 1259--1264, 13-17 May 2013: doi: 10.1109/PowerEng.2013.6635793
  • Gerber, S., Wang, R-J., "Design of a magnetically geared PM machine", Proc. of IEEE International Conference on Power Engineering,
    Energy and Electrical Drives
    , (POWERENG), Istanbul, Turkey, pp. 852--857, 13-17 May 2013; doi: 10.1109/PowerEng.2013.6635721
  • Wang, R-J., Heyns, H.C., "Thermal analysis of a water-cooled interior permanent magnet traction machine", Proc. of IEEE International Conference on Industrial Technology, (ICIT), Cape Town, South Africa, pp. 416--421, 25-27 February 2013; doi: 10.1109/ICIT.2013.6505708
  • Gerber, S., Wang, R-J., "Evaluation of a prototype magnetic gear", Proc. of IEEE International Conference on Industrial Technology, (ICIT), Cape Town, South Africa, pp. 319--324, 25-27 February 2013; doi: 10.1109/ICIT.2013.6505692
  • Gerber, S., Wang, R-J., "Torque capability comparison of two magnetically geared PM machine topologies", Proc. of IEEE International Conference on Industrial Technology, (ICIT), Cape Town, South Africa, pp. 1915--1920, 25-27 February 2013; doi: 10.1109/ICIT.2013.6505970
  • Wang, R-J., Gerber, S., "Magnetically geared wind generator technologies: opportunities and challenges", Proc. of the 5th International Conference on Applied Energy, (ICAE), Pretoria, South Africa, 9 pages, 1-4 July 2013.
  • Mutize, C., Wang, R-J., "Performance comparison of induction motor and line start PM motor for cooling fan applications", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), North-West University, Potchefstroom, South Africa,
    pp. 122--126, 31 January - 1 February 2013; doi: 10.13140/RG.2.1.2542.1922 download pdf
  • Kierstead, H.J., Wang, R-J., Kamper, M.J., "Torque performance of axial flux permanent magnet fractional open slot machine with
    unequal teeth", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), University of Cape Town,
    pp. 203--207, 13-15 July 2011; doi: 10.13140/RG.2.2.32626.30400 download pdf
  • Mouton, Z., Wang, R-J., Kamper, M.J., "Evaluation of axial flux permanent magnet induction generator technology", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), University of Cape Town, South Africa, pp. 197--202, 13-15 July 2011;
    doi: 10.13140/RG.2.1.4901.4883 download pdf
  • Wang, R-J., Kamper, M.J., "Force calculation of electric machines with a flat air-gap using hybrid finite element mesh", Proc. of International Conference on Electrical Machines, (ICEM), Rome, Italy, 3 pages, 6-8 September 2010; doi: 10.1109/ICELMACH.2010.5608466
  • Brönn, L., Wang, R-J., Kamper, M.J., "Development of a shutter type magnetic gear", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Wits University, Johannesburg, South Africa, pp. 78--82, 28-29 January 2010;
    doi: 10.13140/RG.2.1.5032.5606 download pdf
  • Kierstead, H., Wang, R-J., Kamper, M.J., "Design optimization of a single-sided axial flux permanent magnet in-wheel motor with
    double-layer non-overlap concentrated winding", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Stellenbosch, South Africa, pp. 36--40, 28-29 January 2009; doi: 10.13140/RG.2.2.11654.78400 download pdf
  • Potgieter, J.H.J., Lombard, A.H., Wang, R-J., Kamper, M.J., "Evaluation of a permanent magnet excited induction generator for renewable energy applications", Proc. of the Southern African Universities Power Engineering Conference, (SAUPEC), Stellenbosch, South Africa, pp. 299--304, 28-29 January 2009; doi: 10.13140/RG.2.2.15010.22726 download pdf
  • Kamper, M.J., Rix, A.J., Wills, D.A., Wang, R-J., "Formulation, finite-element modeling and winding factors of non-overlap winding
    permanent magnet machines", Proc. of the International Conference on Electrical Machines, (ICEM), Vilamoura, Portugal, 5 pages, 6-9 September 2008: doi: 10.1109/ICELMACH.2008.4799996
  • Randewijk, P.J., Kamper, M.J., Wang, R-J., "Analysis and performance evaluation of radial flux air-cored permanent magnet machines with concentrated coils", Proc. of the International Conference pm Power Electronics and Drive Systems, (PEDS), Bangkok, Thailand, pp. 189--195, November 27-30, 2007; doi: 10.1109/PEDS.2007.4487699
  • Rix, A., Kamper, M.J., Wang, R-J., "Torque ripple and flux density variation due to stator slot opening of a concentrated coil permanent
    magnet machine", Proc. of Southern African Universities Power Engineering Conference, (SAUPEC), Cape Town, 25-26 January 2007
  • Rix, A., Kamper, M.J., Wang, R-J., "Design and performance evaluation of concentrated coil permanent magnet machines for in-wheel drives", Proc. of IEEE International Electric Machines and Drives Conference, (IEMDC), Antalya, Turkey, pp. 770--775, 3-5 May 2007;
    doi: 10.1109/IEMDC.2007.382765
  • Kamper, M.J., Wang, R-J., Rossouw, F., "Analysis and performance evaluation of axial flux air-cored stator permanent magnet machine with concentrated coils", Proc. of IEEE International Electric Machines and Drives Conference, (IEMDC), Antalya, Turkey, pp. 13--20, 3-5 May 2007; doi: 10.1109/IEMDC.2007.383545
  • Sibande, S.E., Kamper, M.J., Wang, R-J., Rakgati, E.T., "Optimal design of a PM-assisted rotor of a 110 kW reluctance synchronous machine", Proc. of IEEE Africon Conference, (AFRICON), Botswana, vol. 2, pp. 793--797, 15-17 September 2004; doi: 10.1109/AFRICON.2004.1406793
  • Sibande, S.E., Kamper, M.J., Wang, R-J., "Design optimisation of 110 kW reluctance synchronous machine with permanent magnet assisted rotor", Proc. of Southern African Universities Power Engineering Conference, (SAUPEC), Stellenbosch University, South Africa, Paper No. SAUPEC04-38, 22-23 January 2004
  • Wang, R-J., Kamper, M.J., "Evaluation of eddy current losses in an axial flux PM machine with an ironless stator", Proc. of IEEE-IAS 37th Annual Meeting, Pittsburgh, USA, vol. 2, pp. 1289--1294, 13-18 October 2002; doi: 10.1109/IAS.2002.1042724
  • Dobson, R.T., Mouton, C.J., Scowby, S., Wang, R-J., Kamper, M.J., "Thermofluid modeling of an axial flux permanent magnet machine", Western Cape Forum for Mechanical Engineering Research Conference on Heat Transfer, Energy Conversion and Fluid Dynamics, Stellenbosch University, South Africa, 13-14 September 2001
  • Mbidi, D., van der Westhuizen, K., Wang, R-J., Kamper, M.J., Blom, J., "Mechanical design considerations of double-stage axial-flux
    permanent magnet machine", Proc. of IEEE-IAS 35th Annual Meeting, Rome, Italy, vol. 1, pp. 198--201, 8-12 October 2000; doi: 10.1109/IAS.2000.881075
  • Wang, R-J., Gieras, J.F., "Analysis of characteristics of a permanent magnet hybrid linear stepping motor", Proc. of International
    Conference on Electrical Machines
    , (ICEM), Istanbul, Turkey, pp. 833--838, 2-4 September 1998.
  • Wang, R-J., Gieras, J.F., "Performance calculation of a PM hybrid linear stepping motor by FEM and RNA", Proc. of 2nd International Symposium on Linear Drives for Industry Applications, (LDIA), Tokyo, Japan, pp. 400--403, 8-10 April 1998
  • Wang, R-J., Gieras, J.F., "Performance calculation of a PM hybrid linear stepping motor", Proc. of the South African Universities Power Engineering Conference, (SAUPEC), Stellenbosch, South Africa, pp. 25--28, 20-21 January 1998
  • Wang, R-J., Gieras, J.F., Ronda, J., "Analysis of forces in a hybrid linear stepping motor", Proc. of the 2nd International Symposium on Advanced Electromechanical Motion Systems, (ELECTROMOTION), Cluj-Napoca, Romania, 8-9 May 1997 (Invited paper)
  • Gieras, J. F., Wang, R-J., "Calculation of forces in a hybrid linear stepping motor for machine tools", Proc. of the 7th European Conference
    on Power Electronics and Applications
    , (EPE), Trondheim, Norway, vol. 3, pp. 591--595, 8-10 September 1997
  • Wang, R-J., Choi, Jae-ho, Gieras, J.F., "Analysis of a PM hybrid linear stepping motor: The finite element approach", Proc. of the 7th Symposium on Fundamental Problems of Power Electronics and Electromechanics, (PPEE), Gliwice-Ustron, Poland, pp. 57--62, 1997
  • Wang, R-J., Gieras, J.F., Wing, M., "Electromagnetic field distribution in a hybrid PM linear stepping motor", Proc. of IEEE Africon Conference, (AFRICON), Stellenbosch, South Africa, pp. 200--205, 25-27 September 1996; doi: 10.1109/AFRCON.1996.563106

Patents

  • Wang, R-J., Kamper, M.J. Magnetic Gear, Patent no.2012/02016, March 2012