Patent ID: 7977841
Filing Date: 2011-07-12
Classification: H02K

Abstract:
1. An electric machinery comprising: a permeable magnetic circuit; a permeable conduction winding excited individual magnetic pole, wherein the permeable conduction winding excited individual magnetic pole is wrapped by a conduction winding capable of exciting the permeable conduction winding excited individual magnetic pole; and a PM magnetic pole having ends with different polarities wrapped by the permeable magnetic circuit and the permeable conduction winding excited individual magnetic pole, wherein the permeable magnetic circuit and the permeable conduction winding excited individual magnetic pole form two magnetic poles having the different polarities of the PM magnetic pole, wherein polarities between the conduction winding excited individual magnetic pole and the wrapped PM magnetic pole have either an accumaltive excitement effect of the same polarity or a differential excitement of opposite polarities, and wherein the combination of the permeable conduction winding excited individual magnetic pole and the permeable magnetic circuit having the different polarities on the PM magnetic poles forms a permeable circuit for passing through the permeable conduction winding excited individual magnetic pole a partial magnetic line of force on the PM magnetic pole while the PM magnetic pole remains to form a partial strength of the magnetic field on the pole-face of the permeable conduction winding excited individual magnetic pole, whereby when the PM magnetic pole is inversely excited in the course of the operation, two magnetic poles of different polarities on the PM magnetic pole keeps the magnetic circuit closed to maintain the magnetic line of force so as to enhance the property against inverse excitation.