یک اینورتر نقطه‌ی خنثی پنج‌کلید و پنج‌سطحی با تعداد کلیدهای کم‌تر نسبت به ساختارهای متداول نقطه‌ی خنثی برای کاربردهای فوتوولتائیک

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد برق، دانشگاه علم و صنعت ایران

2 دانشیار دانشکده‌ مهندسی برق، دانشگاه علم و صنعت ایران

چکیده

امروزه اینورترهای چندسطحی به عنوان راه‌حلی مطلوب برای کاربردهایی با توان متوسط و زیاد مورد استفاده قرار می‌گیرند. یکی از معروف‌ترین ساختار اینورترهای چندسطحی ترکیبی، اینورتر مهارشده نقطه خنثی پنج‌سطحی است که ترکیبی از ویژگی‌های اینورتر نوع خازن شناور و نوع دیود مهارشده هستند که درکاربردهای صنعتی متداول بود. در این مقاله به منظور کاهش هرچه بیش‌تر کلیدهای فعال، ساختار مهارشده‌ی نقطه‌ی خنثی پنج‌سطحی و پنج‌کلیدی را پیشنهاد می‌دهد، به‌گونه‌ای که در ساختار پیشنهادی فقط پنج‌کلید فعال و چهار دیود به‌کارگرفته شده است و با ساختارهای متداول اینورتر پنج‌کلید پنج‌سطحی نقطه‌ی خنثی متداول مورد مقایسه گرفته است. یک نمونه‌ی شبیه‌سازی شده از اینورتر پیشنهادی با توان 4.5 کیلووات، به منظور بررسی صحت و انعطاف‌پذیری ساختار پیشنهادی و همچنین بررسی روش کنترلی اینورتر پیشنهادی، با نرم‌افزار PSpice شبیه سازی شده است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

A new Five level Five switch neutral point inverter for with lower number of power switches PV applications

نویسندگان [English]

  • AmirHosein Akbari 1
  • arezo khomami 1
  • adib abrishamifar 2
1 Iran University of Science and Technology, Faculty of Engineering
2 Associate professor of Iran University of Science and Technology, Faculty of Engineering
چکیده [English]

Multilevel inverters have great applications nowadays as one of preferred solutions for medium and high power applications. As one of the most popular hybrid multilevel inverter topologies, the five-level active-neutral-point-clamped inverter combines the features of the conventional flying-capacitor type and Neutral-Point-Clamped (NPC) type inverter and was commercially used for industrial applications. In order to further decrease the number of active switches, this paper proposes a five-level five-switch NPC topology, which employs only five active switches and four discrete diodes. The modulation strategy for five-level five-switch NPC inverter is discussed. A 4.5KVA single phase prototype is simulated using the PSPICE software to verify the validity and flexibility of the proposed topology and control method.

کلیدواژه‌ها [English]

  • Multilevel inverters
  • PWM modulation
  • Reactive power
  • PSPICE
  • Grid-connected

مراجع

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