Title :
A Twelve-Phase AC-DC Converter for Power Quality Improvement in Direct Torque Controlled Induction Motor Drives
Author :
Singh, Bhim ; Bhuvaneswari, G. ; Garg, Vipin
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi
Abstract :
This paper presents the design and analysis of a star connected autotransformer based twelve-phase AC-DC converter for improving power quality at the point of common coupling (PCC) in direct torque controlled induction motor drives (DTCIMDs). A star connected autotransformer with five windings per phase is used to realize the twelve-phase AC-DC converter. The basic design equations are derived to calculate the number of turns in different windings for achieving harmonic reduction in the proposed autotransformer based AC-DC converter. The designed twelve-phase AC-DC converter is found capable of suppressing up to 21st harmonics in the supply current along with the power factor improvement close to unity in the wide operating range of the drive. The effect of load variation on DTCIMD is also studied to demonstrate the effectiveness of the proposed AC-DC converter
Keywords :
AC-DC power convertors; autotransformers; harmonics suppression; induction motor drives; machine control; power factor; power supply quality; torque control; transformer windings; direct torque controlled induction motor drives; harmonic reduction; point of common coupling; power factor improvement; power quality improvement; star connected autotransformer; twelve-phase AC-DC converter; AC-DC power converters; Couplings; Current supplies; Differential equations; Induction motor drives; Load management; Power quality; Power system harmonics; Reactive power; Torque control; Autotransformer; Direct Torque Control; Induction Motor; Multiphase AC-DC Converter; Power Quality Improvement;
Conference_Titel :
Industrial Electronics and Applications, 2006 1ST IEEE Conference on
Conference_Location :
Singapore
Print_ISBN :
0-7803-9513-1
Electronic_ISBN :
0-7803-9514-X
DOI :
10.1109/ICIEA.2006.257352
