Fault-tolerant Operation of a Medium Voltage Drive Based on the Cascaded H-bridge Inverter

Publish Year: 1389
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

PEDSTC02_095

تاریخ نمایه سازی: 21 تیر 1391

Abstract:

In this paper, a fault-tolerant strategy for operation of a cascaded H-bridge multilevel drive is presented. A faulty power cell in the Cascaded H-bridge (CHB) inverter may lead to expensive downtime and great losses in the motor side. With a fault-tolerant control strategy, the operation can continue and the system reliability increases in this way. Here, the operating principle and the space vector modulation strategy for the 3- phase CHB inverter are explained in detail. Using the proposed algorithm, the medium voltage induction machine will operate symmetrically even when a failure happens in a power cell or in a phase leg. A multilevel fault-tolerant CHB inverter is designed for a 2.3 kV induction motor and its performance is verified by Matlab/Simulink program in different faulty situations. Simulation results confirm the effectiveness of the proposed strategy for MV machines.

Authors

mohammad ali paymani

School of electrical and computer engineering University of Tehran, Tehran, Iran

mohammad saleh marhaba

School of electrical and computer engineering University of Tehran, Tehran, Iran

hossein iman eini

School of electrical and computer engineering University of Tehran, Tehran, Iran