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Different automatic procedures to estimate induction machines parameters, known as self-commissioning, can be found in literature. They usually involve supplying a single phase or two series-connected phases. An ideal machine should present the same behavior at all terminals, while in an actual machine non-idealities alter the response to the signals. Some techniques to state machine condition during...
The realization of a vector control for the operation of induction motors often takes advantage of ordinary equivalent circuit models. Some simplified models are consisting of a reduced number of system parameters and allow a very basically identification procedure by no-load tests in the lab. Fictive identification tests could fortunately be carried out by the finite element method during the development...
A rapid and accurate analysis of the induction motor (IM) is the basis of any design process. This paper deals with an analysis procedure of the IM that combines a set of finite-element simulations with an analytical model. Both three- and single-phase machines are considered. Experimental tests on some IMs confirm the accuracy of the prediction achieved by the proposed analysis. The choice of specific...
This paper deals with basic performance of a design of a two-pole three-phase 40 MVA synchronous generator designed for special operating conditions in laboratory for testing high power transformers. The generator is designed to test three-phase and single-phase transformers aimed to work within 50 Hz and 60 Hz network frequency. This means that the generator will operate at two nominal speeds, at...
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