15 phase induction motor drive with 1:3:5 speed ratios using pole phase modulation

Umesh, B S and Sivakumar, K (2014) 15 phase induction motor drive with 1:3:5 speed ratios using pole phase modulation. In: International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014, 18-21, May 2014, Hiroshima; Japan.

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Abstract

Pole phase modulation (PPM) is one of the effective technique to control speed and torque of multiphase machines. This paper presents the winding details and finite element analysis (FEA) of 15 phase squirrel cage induction motor (IM) drive with 1:3:5 speed ratios using PPM. The proposed 15 phase IM with 60 stator slots and full pitched winding is able to run in five different pole-phase combinations with best utilization of copper. The 15 phase IM fed by a 15 leg inverter is operated in 15 phase 4 pole, 5 phase 12 pole, 3 phase 20 pole, 5 phase 4 pole and 3 phase 4 pole combinations. In addition Generalization of PPM is revisited in this paper to add an extra constraint on the pole ratio by showing an exception for the already proposed generalization of PPM. The operation of the proposed drive for five different pole-phase combinations with three possible speeds is verified by FEA simulation using Ansys Maxwell 2D (FEA package for electromagnetic design) and Simplorer for 2kw IM drive prototype with 10Nm load torque

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