Current Issue : January - March Volume : 2021 Issue Number : 1 Articles : 5 Articles
This paper aims to contribute to the fault-tolerant control of the current sensor. The system studied is a double star induction\nmachine (DSIM) controlled by a robust control called Active Disturbance Rejection Control (ADRC). The proposed method\nmakes it possible to detect, isolate, and reconfigure the fault in real time. The reconfiguration is based on the comparison between\nthe values measured by the current sensors and the estimated values. Two voltage observers will be used to estimate the estimated\ncurrents, and these two observers are placed at the level of the converters. This method of fault-tolerant control (FTC) has the\nadvantage of ensuring, even in the presence of a sensor fault, the continuity of the systemâ??s operation and maintaining its\nperformance at the desired level. The effectiveness of the FTC strategy proposed in this work is illustrated with simulations carried\nout under the MATLAB/Simulink environment....
........NA..................
This work is aimed at achieving a simple and reduced-cost configuration of photovoltaic (PV) water pumping system (PVWPS)\nusing an induction motor with high efficiency. The proposed PV system is composed of two stages of converters which the first\none ensures the maximum power point by controlling the duty ratio of boost converter using variable step size incremental\nconductance............................
The motor drive has been widely adopted in modern power applications. With the emergency\nof the next generation wide bandgap semiconductor device, such as silicon carbide (SiC) MOSFET,\nperformance of the motor drive can be improved in terms of efficiency, power density, and reliability.\nHowever, the fast switching transient and serious switching ringing of the SiC MOSFET can cause\nunwanted high-frequency (HF) electromagnetic interference (EMI), which may significantly reduce the\nreliability of the motor drive in many aspects.................
Water enters the fountains of Peterhof naturally through a system of locks,\ncanals, reservoirs and springs from the Ropsha heights, and the height of the\njets can vary depending on their filling. Pumps were never used in Peterhof.\nTourists from all over the world come to see this fountain near famous palaces.\nThe water delivery uses one tube pipe descending from the nearest hill.\nAfter the water comes down again in the lake, it flows out through the drain\npipe. So even this very high fountain is working without any motor and\ncomes back tube. And many fountains in the world are built according to this\nmethod. For hundreds of years of the existence of fountains, it never occurred\nto anyone to build a second pipe to return the water up the hill. So obviously,\nit is a one-way method....
Loading....