A Case Study of Iran Khodro Company: A Strategic Analysis

This case study is intended to study comprehensively about the performance of Iran Khodro Corporation (IKCO), the largest automaker in the Middle East. Iran Khodro Company is the largest automobile producer in Iran. The case study has the main objectives of monitoring, evaluating and discussing Iran Khodro\'s recent and future condition in the market place based on its written case

Open-Circuit Fault Detection and Location in <i>AC</i>-<i>DC</i>-<i>AC</i> Converters Based on Entropy Analysis

Inverters and converters contain more and more power electronics switches which may subsequently affect their reliability. Therefore, fault detection and location are essential to improve their reliability and to ensure continuous operation. In this paper, an AC−DC−AC converter with three-phase inverter is investigated under permanent, single and multiple open-circuit fault scenarios. Many entropies and multiscale entropies are then proposed to evaluate the complexity of the output currents by quantifying their entropies over a range of temporal scales. Among the multitude of entropies, only some entropies are able to differentiate healthy from open-circuit faulty conditions. Moreover, the simulation results show that these entropies are able to detect and locate the arms of the bridge with open-circuit faults