Quasi Z-Source Inverter Based Dynamic Voltage Restorer for Power Quality improvement of Sensitive Loads in Distribution Grid

  • سال انتشار: 1391
  • محل انتشار: نوزدهمین کنفرانس اپتیک و فوتونیک ایران و پنجمین کنفرانس مهندسی فوتونیک ایران
  • کد COI اختصاصی: ICOPTICP19_142
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 444
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نویسندگان

Hamid Reza Madadi

Department of Electrical Engineering Amirkabir University of Technology Tehran, Iran

S. Hossein Hosseinian

Department of Electrical Amirkabir University of Technology Tehran, Iran

Mohammad Hossein Dehesh

Supreme Audit Court Of Kerman Kerman, Iran

چکیده

Voltage sags and swells in the medium and low voltage distribution grid are considered to be the most frequent type of power quality problems based on recent power quality studies. Their impact on sensitive loads is severe. Different solutions have been developed to protect sensitive loads against such disturbances but the dynamic voltage restorer (DVR) is considered to be the most efficient and effective solution. Its appeal includes lower cost, smaller size and its dynamic response to the disturbance. In this paper, a new topology of quasi Z-source inverter (qZSI) based DVR is proposed. In the proposed system, the size of energy storage element is decreased in compare with the conventional systems where the rating of located power electronics devices is less than the systems using qZSI. This paper described the DVR operation principles and in-phase control method for balanced and unbalanced voltage sags and swells in a distribution system. The Simulation results were presented to illustrate the performances of proposed DVR under voltage sags and swells conditions.

کلیدواژه ها

dynamic voltage restorer; quasi Z-source inverter; voltage sag; voltage swell

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