SVPWM Overmodulation Scheme of Three-Level Inverters for Vector Controlled Induction Motor Drives

서지정보

· 발행기관 : 전력전자학회
· 수록지 정보 : Journal of Power Electronics / 9권 / 3호 / 481 ~ 491페이지
· 저자명 : Kyoung-Min Kwon, Jin-Mok Lee, 최재호, Jae-Moon Lee

초록

This paper describes a SVPWM overmodulation scheme of NPC type three-level inverter for traction drives which extends the modulation index from MI=0.907 to unity . SVPWM strategy is organized by two operation modes of under-modulation and over-modulation. The switching states under the under-modulation modes are determined by dividing them with two linear regions and one hybrid region the same as the conventional three-level inverter. On the other hand, under the over-modulation mode, they are generated by doing it with two over-modulation regions the same as the conventional over-modulation strategy of a two level inverter. Following the description of over-modulation scheme of a three-level inverter, the system description of a vector controlled induction motor for traction drives has been discussed. Finally, the validity of the proposed modulation algorithm has been verified through simulation and experimental results.

참고자료

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