This article focuses on the scalar control of four induction machine structures: the conventional induction machine, the double-star machine, the open-ended stator winding machine, and the dual open-end stator winding machine. To compare these differ-ent structures under the same conditions, we used a single induction machine prototype to design these four machine struc-tures. On the other hand, we also developed a single scalar control algorithm to control these four machines, which is imple-mented in a field-programmable gate array board FPGA. The experimental results showed the efficiency of the operation of this prototype as well as the algorithm developed for the four machines. The experimental results also presented the significant ad-vantage of open-end stator winding structures over star winding structures. The increase in three-phase windings allows for bet-ter power segmentation, this segmentation is better when the three-phase stator windings are open-ended.