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Principle and Characteristics of a New Type AC Servo Motor "VARIFIELD"
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| Author(s) |
Jun Oyama; Tsuyoshi Higuchi; Takashi Abe; Eiji Yamada; Kenzi Shibahara |
| Abstract |
We proposed a novel brushless synchronous motor "half-wave rectified brushless synchronous motor". Amplitude modulated 3-phase currents in the stator winding produces the mmf that rotates at synchronous speed and pulsates at modulation frequency. An emf is induced by this mmf in the rotor winding. The field excitation is produced by the field current obtained by rectifying the emf with a diode inserted into the field winding. Kyowa Kiden Co. Ltd. started production of a new type AC-servo motor series named "VARIFIELD", which is based upon this machine theory. This motor has simple and robust brushless structure and is maintenance free. lt provides us with the torque control operation over a wide speed range, from zero to the rated speed. In this paper, we describe the principle and present overall test results, such as steady-state characteristics and step response. |
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| Filename: | Unnamed file |
| Filesize: | 2.852 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-05-31 by System |
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