Abstract As the key equipment of power conversion, stability inverter directly affects working state equipment. Aiming at open circuit fault tube, this paper designs a diagnosis and tolerance scheme three-phase bridge based on current signal. Firstly, amplitude phase characteristics vector are used to judge location tube. Then output characteristic signal is converted into fault-tolerant contro...

Fault classification in distance protection of transmission lines, with considering the wide variation in the fault operating conditions, has been very challenging task. This paper presents a probabilistic neural network (PNN) and new feature selection technique for fault classification in transmission lines. Initially, wavelet transform is used for feature extraction from half cycle of post-fa...

The fault tolerance proprieties of multiphase induction machines make them candidate technologies for future electrified transport systems. Indeed, the use drives is primarily recommended their redundancy, which allows to handle increasing power demands as well provide fault-tolerant operation. One most common failures in polyphase open-phase (OPF). Under this degraded mode, machine performance...

This paper deals with fault tolerant multiphase electrical drives. The quality of the torque of vector-controlled Permanent Magnet (PM) Synchronous Machine supplied by a multi-leg Voltage Source Inverter (VSI) is examined in normal operation and when one or two phases are open-circuited. It is then deduced that a seven-phase machine is a good compromise allowing high torque-to-volume density an...

This paper presents a comparative study of two distinct modulation strategies applied to a permanent magnet synchronous motor drive, under inverter faulty operating conditions. A rotor field oriented control is used and a performance evaluation is conducted by comparing a hysteresis current control with a space vector modulation technique. Three different operating conditions are considered: no...

Abstract When EV failure happens, it needs to take some fault-tolerant method to ensure people’s safety. When the current sensor and speed sensor are out of work, the software fault-tolerant control algorithm switching strategy can be used. This paper has done theoretical analysis of the rotor field-oriented vector control algorithm into the open loop constant V/F control algorithm, and the pha...

FACTS technology has considerable applications in power systems, such as; improving the steady stateperformance, damping the power system oscillations, controlling the power flow, and etc. STATCOM is oneof the most important FACTS devices used in the parallel compensation, enhancing transient stability andetc. Since three phase fault is widespread in power systems, in this paper STATCOM is used...

This paper introduces a fault-tolerant shunt active power filter (SAPF). The novility in of this work is that it poposes solutions to increase the reliability maintain its operation under single-phase open-circuit fault SAPF. will whole system. SAPF composed 4-leg 27-level inverter based on asymmetric cascaded H-bridge topology. If an introduced SAPF, special control technique be implemented an...