Post‐fault operation strategy for single open‐phase fault in three‐phase induction motor drives

Abstract

Single open-phase fault (SOPF) in three-phase induction motor (TPIM) drives leads to undesired performances and in some cases shutdown of the drive system. This research proposes a post-fault operation strategy based on direct rotor field-oriented control (RFOC) technique for wye-connected TPIM drives during SOPF. In the proposed control system, symmetrical and asymmetrical transformation matrices are utilized for stator voltage and current variables, respectively. In addition, an extended Kalman filter (EKF) is used for the rotor flux estimation, filtration of stator currents, and obtaining their time derivatives. The performance of the introduced technique including steady and transient states during different reference speeds is experimentally validated for a wye-connected TPIM drive considering SOPF. Additionally, the performance of the proposed strategy is experimentally compared with conventional RFOC strategies.

Dynamic Simulation of Three Phase Induction Machines Based on Reduced Order Model for Power Systems Analysis

“…With all derivatives in the and eliminated, while setting equal to in the and equations. According to the previous assumptions the following matrix resulted [12,13].…”

“…The system's 50-60 Hz component's static representation allowed for a significant reduction in the number of calculations needed. [11,12,13,16]. In this study, a dynamic simulation for a three-phase induction motor is these simulations are based on a reduced-order model equation.…”

Practical Test on the Operation of the Three-Phase Induction Motor under Single-Phasing Fault

“…Overcurrent was the basis for the proposed protection scheme. The single-phasing fault with different fault tolerant control (FTC) algorithms has been reviewed in [14][15][16][17][18][19][20][21]. In [14], the authors proposed a method based on a simple open-switch fault monitoring system that uses a reference voltage vector analysis in the stationary α-β coordinates for failure detection.…”

“…In [14], the authors proposed a method based on a simple open-switch fault monitoring system that uses a reference voltage vector analysis in the stationary α-β coordinates for failure detection. The authors in [15] proposed a post-fault control strategy for wye-connected three-phase induction motor drives during a single open-phase fault. The proposed direct rotor field-oriented control system is derived from the conventional vector control system with minor modifications.…”