Open AccessDecoupled current control and sensor fault detection with second‐order sliding mode for induction motor
Author(s) -
Kommuri Suneel Kumar,
Rath Jagat Jyoti,
Veluvolu Kalyana Chakravarthy,
Defoort Michael,
Soh Yeng Chai
Publication year - 2015
Publication title -
iet control theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.059
H-Index - 108
eISSN - 1751-8652
pISSN - 1751-8644
DOI - 10.1049/iet-cta.2014.0336
Subject(s) - control theory (sociology) , induction motor , fault detection and isolation , current (fluid) , fault (geology) , sliding mode control , control engineering , mode (computer interface) , current sensor , computer science , control (management) , engineering , actuator , physics , voltage , artificial intelligence , electrical engineering , nonlinear system , biology , quantum mechanics , paleontology , operating system
This study proposes a new decoupled control method for induction motor (IM) based on higher order sliding mode (HOSM) controller. The proposed controller serves dual purpose by offering decoupled control and sensor fault detection. In this scheme, the decoupled control of d − q currents does not require the knowledge of the speed. The HOSM controllers play the same role as the compensation voltages produced by a decoupling compensator. From the compensation voltages, the speed can be estimated accurately through algebraic calculations. The estimated and actual speeds are then employed for fault detection algorithm to detect the fault. Simulations on a 1/4‐hp three‐phase IM in the presence of random measurement noise highlights the performance of the proposed approach for decoupling current control and robust sensor fault detection.