Premium
Principle and basic characteristics of linear synchronous motor with half‐wave rectified self excitation
Author(s) -
Hirayama Tadashi,
Oyama Jun,
Higuchi Tsuyoshi,
Abe Takashi
Publication year - 2008
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.20684
Subject(s) - magnetomotive force , physics , armature (electrical engineering) , field coil , excitation , electromagnetic coil , linear motor , synchronous motor , ripple , acoustics , electromotive force , electrical engineering , control theory (sociology) , engineering , mechanics , computer science , voltage , control (management) , artificial intelligence
Abstract This paper presents the principle and basic characteristics of a novel linear synchronous motor based on “half‐wave rectified self excitation principle.” The field winding is short circuited through a diode and the armature winding consists of conventional three‐phase windings. If the amplitude of the balance three‐phase currents is modulated by an alternating wave with bias frequency, the produced magnetomotive force pulsates at the bias frequency and moves at the synchronous velocity. This pulsating magnetomotive force induces the electromotive force with a bias frequency in the field winding. The field excitation is obtained by rectifying the electromotive force with the diode in the field winding. In this paper, the authors design and build an experimental machine and confirm its basic characteristics. They also deduce the performance equations and investigate the thrust ripple reduction. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 165(1): 82–90, 2008; Published online in Wiley InterScience ( www. interscience.wiley.com ). DOI 10.1002/eej.20684