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This paper describes a rare-earth-free synchronous motor where space harmonic power is utilized for field magnetization instead of permanent magnets for automotive applications. The stator has a concentrated winding structure, and the rotor has separate two types of windings, i.e., an induction coil that retrieves mainly the second space harmonic and an excitation coil for the field magnetization...
This paper describes estimation of the rotor winding current based on a mathematical model of a self-excited wound-field synchronous motor where the space harmonics power is utilized for the field magnetization instead of the permanent magnets. The operation principle of the proposed motor is explicated by a voltage equation on the synchronous rotating reference frame. Furthermore, the rotor winding...
This paper describes a synchronous motor in which space harmonics power is utilized for field magnetization instead of permanent magnets. The stator has a concentrated winding structure, and the rotor has two sorts of windings, i.e., an induction pole (I-pole) winding that retrieves mainly the third space harmonics power and an excitation pole (E-pole) winding for the field magnetization. The both...
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