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- W1987701728 abstract "This paper presents the design and analysis of a novel T-connected autotransformer based 30-phase ac-dc converter which supplies direct torque controlled induction motor drives (DTCIMD's) in order to have better power quality conditions at the point of common coupling. The proposed converter output voltage is accomplished via three paralleled 10-pulse ac-dc converters each of them consisting of 5-phase diode bridge rectifier. A T-connected autotransformer is designed to supply the rectifiers. This autotransformer makes use of only two single-phase transformers, resulting in reduced volume, weight, and the cost of the drive as compared with polygon structure. The design procedure of magnetics is in a way such that makes it suitable for retrofit applications where a six-pulse diode bridge rectifier is being utilized. The proposed converter requires only three inter-phase transformers in the dc link that yields in the reduced kilovolt ampere rating, size, weight, and cost of the proposed rectifier. The aforementioned structure improves power quality criteria at ac mains and makes them consistent with the IEEE-519 standard requirements for varying loads. Furthermore, near unity power factor is obtained for a wide range of DTCIMD operation. A comparison is made between 6-pulse and proposed converters from view point of power quality indices. Results show that input current total harmonic distortion (THD) is less than 3% for the proposed topology at variable loads." @default.
- W1987701728 created "2016-06-24" @default.
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- W1987701728 date "2012-06-30" @default.
- W1987701728 modified "2023-09-26" @default.
- W1987701728 title "Fork-Connected Autotransformer Based 30-Pulse AC-DC Converter for Power Quality Improvement" @default.
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- W1987701728 doi "https://doi.org/10.15676/ijeei.2012.4.2.2" @default.
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