Title :
Low-Cost Variable Speed Drive Based on a Brushless Doubly-Fed Motor and a Fractional Unidirectional Converter
Author :
Shao, Shiyi ; Abdi, Ehsan ; McMahon, Richard
Author_Institution :
Dept. of Eng., Univ. of Cambridge, Cambridge, UK
Abstract :
The paper presents a low-cost variable-speed drive system comprising a brushless doubly-fed motor (BDFM) and a fractionally rated unidirectional frequency converter. A simple control algorithm is proposed for regulating the drive´s speed and torque. A method of starting the BDFM in the cascade mode is presented and the starting performance is analyzed. The efficiency of the BDFM is discussed and the dynamic performance of the drive is verified by experimental results obtained from a 180 frame-size BDFM.
Keywords :
frequency convertors; machine control; torque; variable speed drives; brushless doubly-fed motor; cascade mode; drive speed; drive torque; fractionally rated unidirectional frequency converter; low-cost variable speed drive; simple control; Converters; Mathematical model; Rotors; Stator windings; Torque; Windings; Brushless doubly-fed motor (BDFM); dynamic performance; phase angle controller; unidirectional converter;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2011.2138672
