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Proceedings Paper

The research on direct drives control system in the large aperture telescope
Author(s): Xiaoyan Li; Zhenchao Zhang; Daxing Wang
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Paper Abstract

A 30m giant telescope project, Chinese Future Giant Telescope (CFGT), has been proposed by Chinese astronomers. At present, a series of key techniques are being developed. This paper explores a method to control direct drive servo motor in giant telescope application, which is based on a segmented Surface-mounted Permanent Magnet Synchronous Motor (SMPMSM). The losses of SMPMSM and the method of reducing the losses are discussed in this paper. Phase-controlled rectification circuit is chosen to regulate rectified voltage according to the telescope status. Such design can decrease the losses of the motor to some extent. In the control system Space-vector PWM (SVPWM) algorithm acts as a control algorithm and three-phase voltage source inverter circuit acts as drive circuit. This project is subsidized by Chinese National Natural Science Funds (10833004).

Paper Details

Date Published: 19 July 2010
PDF: 7 pages
Proc. SPIE 7740, Software and Cyberinfrastructure for Astronomy, 77402D (19 July 2010); doi: 10.1117/12.855982
Show Author Affiliations
Xiaoyan Li, Nanjing Institute of Astronomical Optics & Technology (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Zhenchao Zhang, Nanjing Institute of Astronomical Optics & Technology (China)
Daxing Wang, Nanjing Institute of Astronomical Optics & Technology (China)

Published in SPIE Proceedings Vol. 7740:
Software and Cyberinfrastructure for Astronomy
Nicole M. Radziwill; Alan Bridger, Editor(s)

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