A Novel Reduced Switch Count Multilevel AC/AC Converter

  • سال انتشار: 1390
  • محل انتشار: نوزدهمین کنفرانس مهندسی برق ایران
  • کد COI اختصاصی: ICEE19_473
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 1731
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نویسندگان

a Fatemi

Power Electronics and Protection Laboratory (PEP Lab.), Faculty of Electrical and Computer Engineering Tarbiat Modares University, P.O.Box.۱۴۱۱۵-۱۴۳, Tehran, Iran.

m Azizi

Student Member, IEEE,

k Rahmani

Iranian Research Organization for Science and Technology, Tehran, Iran

a Yazdian

Member, IEEE

چکیده

Despite all the unique features multilevel converters offer, their high number of required power switches has restricted their implementation to particular applications. To mitigate this problem, a novel multilevel ac/ac converter is proposed in this paper which utilises less number of semiconductor devices in its structure. The proposed converter is achieved by cascading recently introduced reduced switch count ac/ac converter and is comparable in performance to cascaded h-bridge multilevel converters except that it is an ac/ac converter capable of working in regenerative mode. The proposed configuration retains all the features of CHB MLIs such as low output voltage distortion, reduced dv/dt stresses, low distortion input ac current and modular structure. Moreover, compared to conventional CHB converters, the number of switches and related drive circuits are reduced in the proposed converter by 25%. The novel structure is introduced, its generalized carrier based modulation scheme is elaborated and a control method is suggested for it. The validity of operation of the proposed system is verified through simulation

کلیدواژه ها

Cascaded H-bridge multilevel converter, reduced switch count inverter, nine-switch converter

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