Open AccessPerformance evaluation of a fault‐tolerant decoupled dual‐channel switched reluctance motor drive under open‐circuits
Author(s) -
Ding Wen,
Liu Yunpeng,
Hu Yanfang
Publication year - 2014
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.2013.0293
Subject(s) - switched reluctance motor , flux linkage , control theory (sociology) , fault tolerance , rotor (electric) , fault (geology) , torque , reluctance motor , reliability (semiconductor) , engineering , computer science , magnetic reluctance , coupling (piping) , topology (electrical circuits) , control engineering , direct torque control , control (management) , induction motor , electrical engineering , magnet , voltage , physics , artificial intelligence , power (physics) , quantum mechanics , reliability engineering , thermodynamics , mechanical engineering , seismology , geology
This study presents a new configuration for dual‐channel switched reluctance motor (DCSRM) called as decoupled DCSRM (DDCSRM), which can be proposed as a suitable candidate for high‐reliability applications. In this new DDCSRM, the two channels could be considered as two synchronously independent 6/4 three‐phase SRMs with no mutual coupling when they are excited simultaneously. The machine topology and magnetic characteristics of flux distribution, static flux linkage and torque by using finite‐element analysis are presented. Then, the mathematic models of the DDCSRM drive under normal and open‐circuit fault operations are proposed. To achieve fault‐tolerant operation, a control strategy of open‐circuit faults for the DDCSRM drive is presented. The key of the fault‐tolerant control strategy is to maintain the rotor speed as the normal motoring operation. The dynamic performances of the DDCSRM drive under normal and open‐circuit fault conditions are analysed by using the control strategy. Finally, an experimental setup for a 12/8 DDCSRM drive system is built for verification. The experimental results at normal and various open‐circuit fault conditions are presented to verify the control strategy of the DDCSRM drive system and the analytical and simulation results.