PEEMS (단국대학교 전력전자연구실)

Publication

Paper Book Patents Articles

Do-Hyeon Kim, Han-Vit Kim, Joon-Seok Kim, and June-Seok Lee, "Voltage Feedforward Control and Time delay Compensation of WFSM for eliminating Current Transient," in Proc. 2024 ECCE

In Proc 2024

PEEMS

Nov. 25, 2024

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1. Authors: Do-Hyeon Kim, Han-Vit Kim, Joon-Seok Kim, and June-Seok Lee

2. Title: Voltage Feedforward Control and Time delay \r\nCompensation of WFSM for eliminating Current \r\nTransient

3. Published in: 2024 IEEE Energy Conversion Congress and Exposition (ECCE)

4. Date of conference: 20-24 Oct. 2024

5. Congerence Location: Phoenix.Arisona,USA

6. Abstract

: This paper proposes a voltage feedforward control \r\nto consider the cross-coupling of the wound field synchronous \r\nmotor (WFSM) that generates a field flux using a field current. \r\nSince the d-axis stator winding and the field winding of WFSM are \r\nmutually coupled, the d-axis flux linkage affects the field flux. \r\nFurthermore, since the field winding has more turns than the \r\nstator winding, a change in the d-axis current induces an electromotive force (EMF) in the field winding. The EMF produces a \r\ncurrent transient of the field current and distorts the d-axis flux. \r\nThis phenomenon indicates the presence of additional crosscoupling components in the WFSM. The additional cross-coupling \r\ncomponents can generate torque ripple and degrade the \r\nperformance of the current controller. This paper analyzes the \r\ncross-coupling between the d-axis and field winding of the WFSM \r\nand presents a feedforward voltage to compensate for the crosscoupling component. In addition, using the digital controller leads \r\nto the problem of the feedforward voltage not being compensated \r\nwhen the current changes. To solve this problem, the predicted daxis current based on the modeling of the WFSM is proposed to \r\ncalculate the feedforward voltage. The validity of the proposed \r\nmethod is verified by simulation results.

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