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High Power Density Adjustable Speed Drive Topology with Medium Frequency Transformer Isolation
작성자 PEFCLab 작성일 2015-10-12
논문집명 IEEE Energy Conversion Congress & Exposition 발행년도 2015. 09
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High Power Density Adjustable Speed Drive Topology with Medium Frequency Transformer Isolation.pdf

  J. Sandoval, H. Krishnamoorthy, P. Enjeti and S. Choi, "High Power Density Adjustable Speed Drive Topology with Medium Frequency Transformer Isolation", IEEE Energy Conversion Congress & Exposition.

Abstract : This paper presents a new adjustable speed drive (ASD) topology that employs medium frequency (MF) transformer isolation. The proposed system consists of a new 3- phase push-pull based AC to DC rectifier with a MF AC link employing only two active switches. A single 5-limb multiwinding MF transformer is employed for isolation. The secondary side of the transformer is connected in a zig-zag configuration and is fed to 3-phase diode rectifiers, realizing 12- pulse rectifier operation. The advantages of the proposed system include high power density due to MF transformer isolation, low active switch count, and a simple modulation scheme. Furthermore, zig-zag transformer connection helps to balance leakage inductance on the secondary side. A 690 VLL, 100 HP design example, detailed analysis and extended simulation results are presented to validate the performance of the proposed approach.

Keywords : adjustable speed drive, multi-winding medium frequency transformer, power density