Consolidated SVPWM for Single-Phase Fault-Tolerant Control of CFNI-Based Inverter
More details
Hide details
1
LGEM Laboratory, Higher School of Technology, Mohammed First University, Oujda, Morocco
2
ESETI Laboratory, National School of Applied Sciences, Mohammed First University, Oujda, Morocco
Corresponding author
Miraoui Meriam
LGEM Laboratory, Higher School of Technology, Mohammed First University, Oujda, Morocco
Power Electronics and Drives 2026;11(1)
KEYWORDS
TOPICS
ABSTRACT
Fault Tolerance control is essential for traction drive systems, which are pivotal components in electric vehicles and high-dependability ap-plications. These systems face significant challenges, particularly under single-phase faulty conditions at either the machine or the inverter level, which can lead to performance degradation or system failure if not properly managed. This paper presents a fault-tolerant approach based on a consolidated Space Vector Pulse Width Modulation (SVPWM) to enable the traction drive system to operate under single-phase faults. The proposed method leverages the capacitor-based four-leg neutral-point-connected inverter (CFNI) topology and integrates a re-medial approach grounded in Field-Oriented Control (FOC) to drive a permanent magnet synchronous motor (PMSM). The simulation results validate the effectiveness of the proposed method in maintaining reliable operation under fault conditions, preserving accurate speed and torque tracking with minimal deviations. Nevertheless, the elevated current stress observed during fault scenarios requires oversized in-verter ratings. These findings demonstrate the robustness of the proposed SVPWM strategy implemented on the CFNI topology, confirming its viability for single-phase fault-tolerant traction drive applications.