Investigation of Electromagnetic Performance of Magnetic-Field Modulated Brushless Double-Rotor Electrical Variable Transmission for HEV s

摘要

The magnetic-field modulated brushless double-rotor machine (MFM-BDRM), getting rid of brushes and slip rings, can be a promising candidate for the electrical-continuously variable transmission in hybrid electric vehicles HEVs. In traditional PM machine, the winding wingding parallel branches have not effects on the electromagnetic performance because each branch is the same in theory. However, owing to the MFM-BDRM is based on special operating principle-magnetic field modulating principle. Therefore, each branch of one phase is not symmetrical completely if the selection of winding wingding parallel branches is more than 1. Hence this paper mainly focuses on the influence of wingding parallel branches on the electromagnetic performance of the MFM-BDRM. Finally, the selection law of winding wingding parallel branches is provided for the MFM-BDRM.