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T-connected Multi-pulse Ac-dc Converters for Power Quality Improvement: 28, 30, and 36-pulse Ac-dc Converters
Rohollah Abdollahi
T-connected Multi-pulse Ac-dc Converters for Power Quality Improvement: 28, 30, and 36-pulse Ac-dc Converters
Rohollah Abdollahi
This book presents the design and analysis of T-Connected autotransformer based multipulse ac-dc converters which supplies a direct torque controlled motor drive in order to improve power quality conditions at the point of common coupling. 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 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 load operation. A comparison is made between 6-pulse, 28-pulse, 30-pulse, and 36-pulse converters from view point of power quality indices. Results show that the THD of input current is less than 5% for the 28-pulse topology and less than 3% for the 30-pulse topology and less than 4% for the 36-pulse topology at variable loads.
Médias | Livres Paperback Book (Livre avec couverture souple et dos collé) |
Validé | 23 avril 2012 |
ISBN13 | 9783659000508 |
Éditeurs | LAP LAMBERT Academic Publishing |
Pages | 64 |
Dimensions | 150 × 4 × 226 mm · 104 g |
Langue et grammaire | English |
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