PAULA JÚNIOR, I. C.; http://lattes.cnpq.br/1263035209977468; PAULA JÚNIOR, Inaldo Câmara Ferreira de.
Resumo:
This paper presents a study of the main current control techniques for drives.
electrical with three-phase induction machines. This study reveals that the techniques
best overall dynamic performance (response time, referendum tracking and rejection
require prior and accurate knowledge of machine parameters
to tune the controller gains. In this sense, a strategy is proposed that
automatically tune gains from current
require prior and accurate knowledge of machine parameters. The strategy developed
suitable for tuning proportional-integral current controllers and
proportional-integral-derivative, requires knowledge of the machine's frequency response
null velocity is based on the principle of conformation of the mesh gain. THE
frequency response of the machine and obtained through a single identification experiment
which does not require any special instrumentation other than that usually
and available on a typical electric drive. The signals used in the identification experiment
allow you to keep the machine at zero speed without any mechanical apparatus
special and guarantee excitation over a wide frequency range. This work also
presents a study of the main estimation techniques of magnetic flux, velocity
and mechanical position for three-phase induction machines. Special attention is given to
speed and position estimation techniques that can be used with the machine
independent of precise knowledge of machine parameters. In this
In this sense, a position estimation technique that employs high frequency signals is proposed.
and uses a serial decomposition of wavelets for filtering and reducing the ratio
signal to noise.