An LCL-filtered Single-phase Multilevel Inverter for Grid Integration of PV Systems

  • سال انتشار: 1395
  • محل انتشار: مجله بهره برداری و اتوماسیون در مهندسی برق، دوره: 4، شماره: 1
  • کد COI اختصاصی: JR_JOAPE-4-1_005
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 204
دانلود فایل این مقاله

نویسندگان

Mohammad Farhadi Kangarlu

Urmia University

Ebrahim Babaei

Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran

Frede Blaabjerg

Department of Energy Technology, Aalborg University, Aalborg, Denmark

چکیده

Integration of the PV into the electrical grid needs power electronic interface. This power electronic interface should have some key features and should come up with grid codes. One of the important criteria is the quality and harmonic contents of the current being injected to the grid. High-order harmonics of the grid current should be very limited (lower than ۰.۳% of the fundamental current). Beside the topology of the power electronic interface, the output filter also affects the quality of the grid current. In this paper, a ۵-level inverter is presented for grid integration of PV systems along with its output LCL filter design. Analytical calculation of losses for the ۵-level inverter and the output LCL filter is presented. It is also compared to the H-bridge inverter in terms of output voltage and current harmonics, and the overall losses. Second-order generalized integral phase locked loop is used to synchronize the system with the grid voltage and the proportional resonant (PR) with harmonic compensation control method is used to control the output current. The proposed system has been simulated in the PSCAD/EMTDC environment to verify its operation and control.

کلیدواژه ها

Multilevel inverter, PV, LCL filter, MPPT

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.