Brushless wound rotor synchronous machine with third-harmonic field excitation

2019 ◽  
Vol 102 (1) ◽  
pp. 259-265 ◽  
Author(s):  
Muhammad Ayub ◽  
Ghulam Jawad Sirewal ◽  
Syed Sabir Hussain Bukhari ◽  
Byung-il Kwon
Keyword(s):  
Synchronous Machine ◽  
Third Harmonic ◽  
Harmonic Field ◽  
Wound Rotor Synchronous Machine ◽  
Field Excitation

scholarly journals High-Efficient Brushless Wound Rotor Synchronous Machine Topology Based on Sub-Harmonic Field-Excitation Technique

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4427
Author(s):  
Syed Sabir Hussain Bukhari ◽  
Qasim Ali ◽  
Jesús Doval-Gandoy ◽  
Jong-Suk Ro
Keyword(s):  
High Efficiency ◽  
Harmonic Component ◽  
Torque Ripple ◽  
Synchronous Machine ◽  
Rotating Magnetic Field ◽  
Harmonic Field ◽  
Three Phase ◽  
High Efficient ◽  
Wound Rotor Synchronous Machine ◽  
Field Excitation

This paper presents a new high-efficient three-phase brushless wound rotor synchronous machine (BL-WRSM) based on a sub-harmonic field excitation technique. In the proposed machine topology, the stator is equipped with two different three-phase windings: (1) main armature winding, and (2) additional armature winding. The main armature winding is based on a 4-pole winding configuration, whereas the additional armature winding is based on a 2-pole winding configuration. Both windings are supplied current from two different inverters, i.e., inverter-1, inverter-2, and simultaneously. Inverter-1 provides the regular input current to the main armature winding, whereas inverter-2 provides a three-phase current of low magnitude to the 2-pole additional armature winding. This generates an additional sub-harmonic component of MMF in the airgap beside the fundamental MMF. On the other side, the rotor is equipped with (1) harmonic, and (2) field windings. These windings are electrically coupled via a rectifier. The fundamental component of MMF produces the main rotating magnetic field, whereas the sub-harmonic MMF gets induced in the harmonic winding to produce harmonic current. This current is rectified to give DC to the rotor field winding to attain brushless operation. To authenticate the operation and analyze its performance, the proposed BL-WRSM topology is supported using 2-D finite element analysis (FEA) in JMAG-Designer. Later on, the performance of the proposed brushless topology is compared with the customary BL-WRSM topology to verify its high efficiency, high output torque, low torque ripple, and low unbalanced radial force on the rotor.

Brushless wound field synchronous machine with third-harmonic field excitation using a single inverter

2019 ◽  
Vol 101 (1) ◽  
pp. 165-173 ◽  
Author(s):  
Muhammad Ayub ◽  
Syed Sabir Hussain Bukhari ◽  
Ghulam Jawad ◽  
Byung-il Kwon
Keyword(s):  
Synchronous Machine ◽  
Third Harmonic ◽  
Harmonic Field ◽  
Field Excitation

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

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2205 ◽  
Author(s):  
Syed Sabir Hussain Bukhari ◽  
Ghulam Jawad Sirewal ◽  
Faheem Akhtar Chachar ◽  
Jong-Suk Ro
Keyword(s):  
Harmonic Component ◽  
Current Component ◽  
Harmonic Current ◽  
Element Analysis ◽  
Third Harmonic ◽  
Time Harmonic ◽  
Wound Rotor Synchronous Machine ◽  
Field Excitation ◽  
Winding Machine ◽  
Dc Current

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.

scholarly journals Brushless Field Excitation Scheme for Wound Field Synchronous Machines

2020 ◽  
Vol 10 (17) ◽  
pp. 5866
Author(s):  
Syed Sabir Hussain Bukhari ◽  
Ghulam Jawad Sirewal ◽  
Faheem Akhtar Chachar ◽  
Jong-Suk Ro
Keyword(s):  
Synchronous Machines ◽  
Harmonic Current ◽  
Element Analysis ◽  
Magnetomotive Force ◽  
Excitation Scheme ◽  
Third Harmonic ◽  
The Third ◽  
Harmonic Field ◽  
Three Phase ◽  
Field Excitation

A new harmonic field excitation technique for the brushless operation of wound field synchronous machines (WFSMs) is proposed in this paper. The proposed scheme involves conventional three-phase and single-phase inverters operating at different frequencies and supply input current to the armature winding simultaneously. This results in a composite output current of the inverters, which contains fundamental as well as the third harmonic current components. The fundamental is utilized to develop the stator field, on the other hand, the third harmonic is used for developing the pulsating magnetomotive force (MMF) in the airgap. This MMF produces a harmonic current in the harmonic winding of the rotor which is later rectified to inject field current to the rotor field winding. The theoretical analysis of the proposed technique is supported using 2-D finite element analysis (FEA).

Current Sensorless Control for a Wound Rotor Synchronous Machine Based on Flux Linkage Model

2021 ◽  
pp. 1-1
Author(s):  
Peyman Haghgooei ◽  
Adrien Corne ◽  
Ehsan Jamshidpour ◽  
Noureddine Takorabet ◽  
Davood Arab Khaburi ◽  
...  
Keyword(s):  
Sensorless Control ◽  
Synchronous Machine ◽  
Flux Linkage ◽  
Wound Rotor Synchronous Machine ◽  
Current Sensorless ◽  
Linkage Model
Sign in / Sign up

Export Citation Format

Share Document