نتایج جستجو برای: induction machines
تعداد نتایج: 257031 فیلتر نتایج به سال:
Induction machines are perhaps the most widely used of all electric motors. They are generally simple to build and rugged, offer reasonable asynchronous performance: a manageable torque-speed curve, stable operation under load, and generally satisfactory efficiency. Because they are so widely used, they are worth understanding. In addition to their current economic importance, induction motors ...
Additional losses of asynchronous induction machines utilized in traction drives caused by the inverter have a great impact of the thermal behaviour of such machines. Therefore, an accurate modelling and evaluation of these additional losses is a very important task in particular with the initial design. Based on detailed measurement data from already built machines, a fast and reliable calcula...
Induction machines are perhaps the most widely used of all electric motors. They are generally simple to build and rugged, offer reasonable asynchronous performance: a manageable torque-speed curve, stable operation under load, and generally satisfactory efficiency. Because they are so widely used, they are worth understanding. In addition to their current economic importance, induction motors ...
Both fixed-speed squirrel-cage induction generators and variable-speed doubly-fed induction generators are used in wind turbine generation technology. Modeling and simulation of induction machines using vector computing technique in Matlab/Simulink provides an efficient approach for further research on wind generation system integration and control. In this paper, the vector computing technique...
The development of condition monitoring (CM) systems induction machines (IMs) is essential for the industry because early fault detection would help engineers to optimise maintenance plans. However, use several IMs test and validate diagnosis methods developed requires also costly benches that, anyway, often face limitations in range faults operating conditions be tested. To avoid it, accurate ...
Induction machines designed for inverterdriven variable speed systems is different from those powered directly from utility power lines. In this paper, the design strategies of inverter-driven induction machines are discussed. This is followed by a description of a computer aided design and analysis package specifically for this purpose. The program package permits integration design of machine...
The paper presents issues regarding the flux estimation of induction machines. The electrical machines variable’s estimation represents a major problem in the actual context of modern control approaches, especially of sensorless control strategies. There are considered several implementations of induction machine’s flux estimators by using the Matlab-Simulink environment and there are drawn the...
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