Dual-Inverter-Controlled Brushless Operation of Wound Rotor Synchronous Machines Based on an Open-Winding Pattern

Syed Sabir Hussain Bukhari, Ghulam Jawad Sirewal, Faheem Akhtar Chachar and Jong-Suk Ro
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Syed Sabir Hussain Bukhari: Department of Electrical Engineering, Sukkur IBA University, Sukkur, Sindh 65200, Pakistan
Ghulam Jawad Sirewal: Department of Electronic Systems Engineering, Hanyang University, Ansan 426-791, Korea
Faheem Akhtar Chachar: Department of Electrical Engineering, Sukkur IBA University, Sukkur, Sindh 65200, Pakistan
Jong-Suk Ro: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06910, Korea

Energies, 2020, vol. 13, issue 9, 1-13

Abstract: In an open-winding machine, three-phase stator currents can be controlled such that the input armature currents may contain the third-harmonic current component in addition to the fundamental. Considering this attribute of open-winding patterns, a harmonic current field excitation technique for a wound rotor synchronous machine (WRSM) is proposed in this paper based on the control of time-harmonic magneto-motive force. Two inverters connected to both terminals of the stator winding are controlled so that the input armature current generates an additional third-harmonic current component. This third-harmonic component generates a vibrating magnetic field that induces a current in the specially designed rotor harmonic winding. The current is supplied as DC current to the rotor excitation winding to generate a rotor field by using a full-bridge diode rectifier in order to achieve brushless operation. The proposed dual-inverter-controlled brushless operation for a WRSM is executed in ANSYS Maxwell using 2-D finite element analysis to validate its operation and electromagnetic performance.

Keywords: brushless operation; third-harmonic MMF; open-winding pattern; wound rotor synchronous machines (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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