Open AccessInvestigation and implementation of a new hybrid excitation synchronous machine drive system
Author(s) -
Zhang Zhuoran,
Liu Ye,
Tian Bo,
Wang Wenjia
Publication year - 2017
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2016.0542
Subject(s) - torque , control theory (sociology) , excitation , rotor (electric) , magnet , torque density , direct torque control , synchronous motor , traction (geology) , vector control , range (aeronautics) , traction motor , engineering , power (physics) , computer science , voltage , automotive engineering , control (management) , electrical engineering , physics , mechanical engineering , induction motor , artificial intelligence , aerospace engineering , quantum mechanics , thermodynamics
Hybrid excitation synchronous machines (HESMs) inherit the high‐torque density of permanent magnet synchronous machines and flux regulation capability of wound rotor synchronous machines. This makes HESMs attractive candidates for vehicle traction applications. To further improve torque density, an optimised HESM with magnet shunting rotor is proposed in this study. This study presents a maximum torque control strategy with zero d ‐axis current. Furthermore, an optimised control strategy that utilises the coordinated operation between the field current and d ‐axis current is proposed. The optimised control strategy exhibits advantages of low‐speed high‐torque, wide constant power range, and high efficiency in flux‐weakening (FW) region. A 100 kW drive system based on the optimised HESM with the proposed control strategy is developed, experimentally realised, and validated. The experimental results show that the FW range is 3.5–1, and the efficiency of the drive system is >92% in most operating region, which verify the superiority and effectiveness of the proposed HESM drive system.