Three-phase Induction Motor (IM) drives are widely used in industrial equipments. One of the essential problems of 3-phase IM drives is their high speed and torque pulsation in the fault conditions. This paper shows Direct Torque Control (DTC) strategy for vector control of a 3-phase IM under opencircuit fault. The objective is to implement a solution for vector control of 3-phase IM drives whi...

Efficiency and recuperation capabilities of modern electrical drives have become very important features within variable speed drive applications. Regenerative electrical drives are therefore usually equipped with cost extensive pulsed active front end topologies for the recuperation mode. Contrarily, the much cheaper fundamental frequency switched front end is used. It has no electrolytic capa...

This contribution wants to show some recent applications of neural networks in the field of power electronics, with particular emphasis on the sensorless control of AC drives and examines improvements that can be attained when using linear neural networks. At first it presents some theoretical aspects of linear neural networks, particularly the TLS EXIN neuron. Then it describes some original a...

There has been an ever-increasing demand to increase the switching frequency, power density, efficiency and dynamic performance of switch-mode power converter, the development of soft-switching technology has taken an accelerated pace. This paper provides a review on the development of soft-switching power converters for electric vehicle (EV) propulsion and recent research trends will also be d...

The low cost per megabyte of optical disk and magnetic tape storage make these technologies particularly attractive for use in large capacity storage servers, including multimedia servers. However, these devices have performance problems that range from high costs for many optical drives to low performance and lack of random access in tape drives. We evaluate the performance on multimedia appli...

Gene drives make it possible, for the first time, to spread genetic changes in large populations of wild plants and animals, and thus override nature’s evolutionary constraints. Scientists are now working to develop gene drives to prevent the spread of malaria by eradicating mosquito species that carry the parasite, and to preserve endangered species, amongst other things. The technology challe...

We provide novel evidence on which theories best explain stock return anomalies by decomposing anomaly portfolio returns into components driven by the underlying …rms’cash ‡ows or their discount rates. For each of …ve well-known anomalies, we …nd that cash ‡ow shocks explain more variation in anomaly portfolio returns than discount rate shocks. The cash ‡ow and discount rate components of each ...

Organs such as the lung that are continuously exposed to inhaled microbes must be carefully guarded against excessive inflammation. A new study by Taggart and colleagues on page 1659 shows that a protease inhibitor that is produced in the airways helps subdue lung inflammation by shutting down the pro-inflammatory transcription factor NFB, both in the cytoplasm and the nucleus. One way the lung...

We describe the successful application of a SLICOT subroutine in a control engineering problem. Based on GPS data it is possible to automatically steer farm vehicles along a prescribed trajectory. The bottleneck for the successful on-line implementation of a LQG regulator is the numerical solution of a discrete-time algebraic Riccati equation in real-time and at high accuracy. This is achieved ...