Title :
Torque Performance of Optimally Designed Six-PhaseReluctance DC Machine
Author :
Rakgati, Edward T. ; Kamper, Maarteen J. ; Le Roux, Abraham D.
Author_Institution :
Dept. of Electr. & Electron. Eng., Stellenbosch Univ.
Abstract :
In this paper the principle, basic torque theory and design optimisation of a six-phase reluctance dc machine are considered. A trapezoidal phase current waveform for the machine drive is proposed and evaluated to minimise ripple torque. Low cost normal laminated salient-pole rotors with and without slits and chamfered poles are investigated. The six-phase machine is optimised in multi-dimensions by linking the finite-element analysis method directly with an optimisation algorithm; the objective function is to maximise the torque per copper losses of the machine. The armature reaction effect is investigated in detail and found to be severe. The measured and calculated torque performances of a 35 kW optimum designed six-phase reluctance dc machine drive are presented
Keywords :
DC machines; finite element analysis; optimisation; reluctance machines; torque; 35 kW; armature reaction effect; finite-element analysis method; laminated salient-pole rotors; optimisation algorithm; six-phase reluctance DC machine; torque performance; trapezoidal phase current waveform; Algorithm design and analysis; Armature; Copper; Costs; DC machines; Design optimization; Finite element methods; Joining processes; Optimization methods; Torque; Reluctance dc machine; armature reaction effect; current waveform; design optimisation; finite element analysis;
Conference_Titel :
Industry Applications Conference, 2006. 41st IAS Annual Meeting. Conference Record of the 2006 IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
1-4244-0364-2
Electronic_ISBN :
0197-2618
DOI :
10.1109/IAS.2006.256682
