著者

小笠原 悟司 沢田 直 阿部 慶一 赤木 泰文

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.111, no.11, pp.930-936, 1991-11-20 (Released:2008-12-19)

参考文献数

12

被引用文献数

2 3

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This paper describes a vector control system of an induction machine using a neutral-pointclamped voltage source inverter (NPC-VSI) that is one of double series connected inverters.The NPC-VSI is able to output 5 levels step-shaped line to line voltage without output transformers or reactors, and it may reduce harmonic currents corresponding to torque ripples. However, the NPC-VSI has a problem that excessive high voltage is applied to swiching devices when a neutral point of two DC capacitors of the NPC-VSI varies from the center of the DC link voltage, because the neutral point is floating.This paper proposes a current controller to which the space vector theory is applied. This can reduce harmonic currents to 1/4 of those of a conventional voltage source inverter using 6 swiching devices, and regulate the neutral point potential within a preset range. To simplify the current controller, information about voltage space vectors is given from the vector controller to the current controller. Validity of the current controller is confirmed by a prototype using an induction machine of 2.2 kW.

著者

清水 義雄 小林 建太郎 阿部 慶一

出版者

医学書院

雑誌

精神医学 (ISSN:04881281)

巻号頁・発行日

vol.53, no.10, pp.1015-1017, 2011-10