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Research on synchronous type and induction type levitated rotating motor
Author(s) -
Ohishi Tetsuo,
Shimura Seiji,
Okada Yohji
Publication year - 1995
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391150711
Subject(s) - control theory (sociology) , levitation , stator , rotor (electric) , induction motor , wound rotor motor , magnetic bearing , magnetic levitation , torque , synchronous motor , direct torque control , engineering , squirrel cage rotor , torque motor , physics , magnet , mechanical engineering , electrical engineering , computer science , control (management) , voltage , artificial intelligence , thermodynamics
A general solution of levitation control applicable to PM synchronous and induction type rotating motor is presented. It is intended for a single rotor to have both magnetic bearing and rotating motor. The rotational control is achieved with the traditional P pole magnetic flux, while the radial force is controlled with either P + 2 or P ‐ 2 pole magnetic flux in the stator. In the previous work, the proposed general theory of levitated motor is successfully confirmed with no load experiments. In this paper, the load capability of the levitated motor is tested using a horizontal‐type experimental setup. The stator has eight concentrated wound electromagnets, each of which is controlled individually by a DSP and power amplifier. The radial load is the gravity of the rotor, while the produced rotating torque is measured with a variable torque load system. The results obtained are discussed in detail.