Robust Fault-Tolerant Synergetic Control for Dual Three-Phase PMSM Drives Considering Speed Sensor Fault

Abstract

Stability and reliability are the most important indicators of drive systems. In this article, a robust nonlinear control method is advanced for dual three-phase permanent-magnet synchronous machine (dual-PMSM) drives, based on the synergetic control theory. This control is implemented by a new synergetic controller (SGC) integrating with an extended sliding mode observer (ESMO), and an optimization method is applied to obtain the optimal parameters of the SGC. This control scheme not only improves the dynamic performance even with operating parameters change, but also can diagnose the speed sensor fault and realize the fault tolerant control (FTC). The proposed control method is compared with the PI control, the sliding mode control (SMC) and the predictive control, as well as the simulation and experimental results confirm the superior dynamic performance and the effectiveness on the speed sensor fault diagnosis (FD) and FTC. INDEX TERMS Synergetic controller, fault diagnosis, fault-tolerant control, speed sensor fault, dual threephase permanent-magnet synchronous machine (dual-PMSM).

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 1: General Overview Considering Multiple Fault Types

“…In fact, the abnormal behavior of the machine after said sensor fails may compromise the mechanical and electrical (e.g., back-EMF rise with speed) integrity of the system [58]. For these reasons, encoders and resolvers represent a possible source of faults that needs to be taken into account [58,87,127,130,182,197,199,208,213,215,216]. Although the reasons that produce these failures do not depend on n and the three-phase tolerance approaches in many cases are also valid for n > 3, the extra DOFs of multiphase machines offer valuable potential for obtaining enhanced performance in such conditions.…”

“…Some of the typical failures in incremental encoders are inconsistent number of pulses per turn (e.g., due to noise) and total/intermittent signal loss (e.g., supply/interface fault). Concerning resolvers and absolute encoders, faults usually consist in zero output, gain drop, offset, or high noise [87,509].…”

“…This approach can be applied for any phase number. Regarding multiphase drives, it has been performed for sixphase PMSMs with asymmetrical WSA, based on an extended sliding-mode observer [87] and on a voltage-model-based stator-flux observer [58]. It has also been performed by means of sliding-mode observer for a five-phase PMSM in [86].…”

Third-Order Sliding Mode Applied to the Direct Field-Oriented Control of the Asynchronous Generator for Variable-Speed Contra-Rotating Wind Turbine Generation Systems

“…In addition, the cost of periodic equipment maintenance is reduced. Among the proposed solutions to reduce chattering and improve SMC performance, we find terminal SMC (TSMC) technique [8], synergetic control [9], integral SMC (ISMC) strategy [10], fast TSMC technique [11], adaptive global SMC control [12], total SMC [13], nonsingular TSMC [14], fast TSMC technique [15], and fast integral TSMC [16].…”

Digital Collaborative Development of a High Reliable Auxiliary Electric Drive System for eTransportation: From Dual Three-Phase PMSM to Control Algorithm

“…In [17], a control algorithm was specially designed to drive a dual three-phase induction motor with a five-leg inverter. High quality current control [18], [19] and fault-tolerant control [20], [21] are also research hotspots of DTP motors.…”