Proposal and Verification of a Novel Doubly‐Excited Variable‐Flux Consequent Pole Motor

ABSTRACT In this study, we propose a new type of hybrid excited motor called “doubly‐excited variable‐flux consequent pole motor (DeVFCM).” The DeVFCM consists of a three‐phase double Y‐connected armature winding with two neutral points, O 1 and O 2 , and field poles with alternating permanent magnet and iron poles. When a DC voltage for supplying the field current is applied across O 1 and O 2 in such a configuration, the armature winding also acts as a field winding, and the magnetic flux through the iron poles can be adjusted. To validate the principle of this DeVFCM, a prototype machine was fabricated, and the basic characteristics of the prototype machine were investigated through three‐dimensional finite element analysis and experiments. The results show that both high torque generation and loss reduction at high speeds can be achieved by adjusting the field current.