Fault-Tolerant Control Strategy for Five-Phase PMSM With Third-Harmonic Current Injection

Experimental fault-tolerant control of a PMSM drive

The paper describes a study and an experimental verification of remedial strategies against failures occurring in the inverter power devices of a permanent-magnet synchronous motor drive. The basic idea of this design consists in incorporating a fourth inverter pole, with the same topology and capabilities of the other conventional three poles. This minimal redundant hardware, appropriately con...

Fault Tolerant Control Strategy for OmniKity-III

In this paper OmniKity-III (OK-III), a novel wheeled omni-directional mobile robot is developed and its kinematic model and control laws are derived. A special gear train was developed to have omnidirectional mechanism using conventional tire wheels. Several control laws are provided by considering the robot as a redundantly actuated wheeled mobile robot (WMR) on the plane. Since the robot has ...

Robust Takagi-Sugeno sensor fault tolerant control strategy for nonlinear system

An improved current injection network for three-phase high-power-factor rectifiers that apply the third harmonic current injection

A novel current injection network for low-harmonic rectifiers that apply the third harmonic current injection is proposed in this letter. The current injection network requires one inductor, two capacitors, and one 1 : 1 transformer with voltampere rating of only 0.16% of the input power. The transformer is introduced to provide complete rejection of harmonic components of the injected currents...

Current Sensor Fault Reconstruction for PMSM Drives

This paper deals with a current sensor fault reconstruction algorithm for the torque closed-loop drive system of an interior PMSM. First, sensor faults are equated to actuator ones by a new introduced state variable. Then, in αβ coordinates, based on the motor model with active flux linkage, a current observer is constructed with a specific sliding mode equivalent control methodology to elimina...