NDLI: A converter based adjustable speed drive for doubly fed induction machine with centrifugal loads

Content Provider	IEEE Xplore Digital Library
Author	Xibo Yuan Jianyun Chai Yongdong Li
Copyright Year	2009
Description	Author affiliation: Dept. of Electrical Engineering, Tsinghua University, Beijing, 100084, China (Xibo Yuan; Jianyun Chai; Yongdong Li)
Abstract	Adjustable speed drive is quite attractive for pump, compressor and other centrifugal load applications in sense of its flexibility and high operating efficiency, compared with the conventional constant speed drive system. In this paper, a slip power recovery scheme combined with the constant volts/hertz control for doubly fed induction machine (DFIM) is proposed and investigated. The machine is started and accelerated to the setting speed region by constant volts/hertz control without the help of starting resistors or auto-transformer. Two starting alternatives can be used according to different turns ratios between the stator and rotor windings. After grid synchronization, the vector control scheme takes over and regulates the machine speed in the setting speed region based on the machine mathematical model. Some important application issues such as “soft grid connection” and rotor position estimation are also discussed. The proposed control scheme has been experimentally verified through the DSP-controlled 30kW system by starting from the rotor side. The drive system can successfully run in the full speed range with the proposed control method and control sequences.
Starting Page	2512
Ending Page	2519
File Size	848347
Page Count	8
File Format	PDF
ISBN	9781424428939
DOI	10.1109/ECCE.2009.5316546
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resistors Rotors Control systems Slip power recovery Doubly fed induction machine Machine vector control Grid synchronization Centrifugal load Pumps Stator windings Variable speed drives Induction machines Acceleration Mathematical model
Content Type	Text
Resource Type	Article

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