Control of a split pole pair induction machine

There are advantages with dividing a multi pole pair AC machine stator into two pole segments. Modularity, serviceability, lower component rating and improved control around the zero stator frequency region are feasible with a modular approach. This paper examines the impact of modularisation on the control capabilities. A control strategy is proposed whereby the stator frequencies of the stator segments is altered around the zero frequency region of the conventional motor. Experimental results confirm that modularisation provides excellent control capabilities around this region