An Optimally Controlled Variable Output Wound Rotor Synchronous Machine

Owuor, James O.; Munda, Josiah L.; Jimoh, A.A.

doi:10.18178/ijoee.4.1.54-61

Cited by 1 publication

(1 citation statement)

References 17 publications

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“…In this paper, different methods were used to break down the mathematical problem, out of which the best solution was picked saving time due to better optimization efficiency. An optimized LQR strategy was employed for the wound rotor synchronous machine at variable speeds, with variable output applications with enhanced efficiency [27]. For safe power supply to the loads, the machine only operated in the generating mode, providing good flexibility in operation of the synchronous machine, and was suitable for usage in small hydropower and wind generation applications.…”

Section: Introductionmentioning

confidence: 99%

A Novel Rotor Harmonic Winding Configuration for the Brushless Wound Rotor Synchronous Machine

Arif,

Ali

et al. 2024

WEVJ

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In the last decade, permanent magnet (PM)-free or hybrid PM machines have been extensively researched to find an alternative for high cost rare-earth PM machines. Brushless wound rotor synchronous machines (BL-WRSMs) are one of the alternatives to these PM machines. BL-WRSMs have a lower torque density compared to PM machines. In this paper, a new topology is introduced to improve the torque producing capability of the existing BL-WRSM by utilizing the vacant spaces in the rotor slots. The new topology has two harmonic windings placed on the rotor which induce separate currents. A capacitor is used between the two harmonic windings to bring the currents in phase with each other. The harmonic winding currents are fed to the rectifier which is also placed on the rotor. Due to additional harmonic winding, the overall field current fed to the rotor field winding has been increased and hence the average torque has also increased. Finite element analysis (FEA)-based simulations are performed using ANSYS Maxwell to validate the proposed topology. The results show that the average torque of the machine has been significantly increased compared to the reference model. The detailed comparison results are provided in this paper.

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Section: Introductionmentioning

confidence: 99%