A new brushless wound rotor synchronous machine using a special stator winding arrangement

作者：Hussain Asif; Kwon Byung-il^*

来源：Electrical Engineering, 2018, 100(3): 1797-1804.

DOI：10.1007/s00202-017-0662-8

• Brushless wound rotor synchronous machine (BL-WRSM)
• Special stator winding
• Sub-harmonic magneto-motive force (SH-MMF) component
• Harmonic winding
• 2-D finite element analysis (FEA)

This paper proposes a new topology for a brushless wound rotor synchronous machine (BL-WRSM) using a specially designed stator winding supplied through a single three-phase inverter. In this topology, a special stator winding, which comprises of two sets of series-connected windings with an unequal number of turns, is used to generate an additional spatial sub-harmonic component in the stator magneto-motive force (MMF). This additional sub-harmonic MMF (SH-MMF) component is utilized for exciting the field winding of the BL-WRSM. The advantage of the proposed brushless topology is the use of a single inverter compared to a dual inverter used in the existing dual inverter BL-WRSM. For the rotor, there are two separate windings: (1) harmonic winding and (2) field winding. Both the harmonic and field windings are connected in parallel with each other through a rotating rectifier. The additional SH-MMF component generates a rotating air-gap magnetic field, which induces the voltage in the harmonic winding. This induced voltage is then rectified and used to supply a dc current to the field winding. A 2-D finite element analysis is performed to analyze and verify the operating principle of this new BL-WRSM.

• 出版日期2018-9