Low Switching Frequency Deadbeat-Direct Torque and Flux Control of Wound Field Synchronous Machines

Nie, Yi-Hang; Brown, Ian; Ludois, Daniel C.

doi:10.1109/ecce.2018.8557780

Cited by 4 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The feedforward voltage is applied to compensate for the disturbance caused by change in the d-axis current and can be calculated from the third term of Eq. (12). Compared with Fig.…”

Section: B D-axis Current Command Adjustment Methodsmentioning

confidence: 96%

“…However, since d-f cross coupling is represented in terms of changes to the d-axis current or the field current, the effects of the flux linkage change on the coupling inductance should be considered. In [12]- [14], deadbeat direct torque and flux control (DB-DTFC) is proposed; this method utilizes discrete currents and a flux observer to reflect a cross-coupled model of the WRSM. In particular, in [14], to implement current-and flux-linkage observers, a Taylor-series-approximated sampled Laplace approach is used to represent d-f coupling in the WRSM.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, in [14], to implement current-and flux-linkage observers, a Taylor-series-approximated sampled Laplace approach is used to represent d-f coupling in the WRSM. Because of the high turns ratio between the stator d-axis and field winding, a small change in the d-axis current flux would invoke a large field control voltage demand; however, field-inverter voltage saturation was not considered in [12]- [14]. The stator d-axis flux linkage is saturated easily by small field currents due to the large selfinductance of the field winding.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Field Current Control Strategy for Wound-Rotor Synchronous Motors Considering Coupled Stator Flux Linkage

Hwang

2020

IEEE Access

View full text Add to dashboard Cite

The direct axis (d-axis) stator winding and field winding of a wound-rotor synchronous motor (WRSM) are mutually coupled much like the primary and secondary windings in a transformer are. As the field winding has a large number of turns, small variations of the stator d-axis current can induce a great electromotive force (EMF) in the field windings. This induced EMF voltage disturbs field current regulation, invokes an unwanted field current response, and distorts the stator d-axis flux. In this work, a novel field current control strategy for the WRSM is proposed for compensating the disturbance by d-axis current in field winding. The coupling effect between the stator d-axis winding and field winding is analyzed by using a polynomial regression of the stator d-axis flux linkage. Based on an analysis of the coupling effect, the proposed strategy combines two control methods. First, feedforward control is applied to decouple the field current response from the coupled change in the stator d-axis current flux. Second, a method is used to adjust the d-axis current to ensure that the field inverter voltage is not saturated. Simulations and experiments are presented to verify the proposed control method, proving that the proposed field current control strategy successfully compensates for the field current ripples caused by variations in the coupled stator d-axis current flux.

show abstract

“…The feedforward voltage is applied to compensate for the disturbance caused by change in the d-axis current and can be calculated from the third term of Eq. (12). Compared with Fig.…”

Section: B D-axis Current Command Adjustment Methodsmentioning

confidence: 96%