Novel Interior Permanent Magnet Machines for Electric Vehicle Applications
Electromagnetics
PRESENTER:
Professor Z.Q Zhu
EXPERTISE:
Electromagnetics
Software:
JMAG
Permanent magnet (PM) machines, particularly interior permanent magnet (IPM) machines, have been widely used for many applications due to high torque density, high efficiency and relatively low PM usage. This presentation overviews IPM machines for electric vehicles, with reference to novel magnetic-field-shifting techniques for enhancing the torque in a new class of IPM machines. The principle for torque enhancement is introduced firstly. IPM topologies are then categorized in terms of asymmetries and symmetricities of PM configuration and rotor core geometry. Subsequently, the merits and demerits of various IPM rotor topologies in each category are analyzed and compared. Finally, torque capabilities of selected IPM machines are compared, with reference to the conventional IPM machines.
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