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Document Details
Document Type
:
Thesis
Document Title
:
A real time simulation of a three level Neutral Point Clamped voltage source converter for Grid-Connected Microgrid
محاكاة في الوقت الفعلي لمحول مصدر الجهد المحايد ذو الثلاثة مستويات للشبكة الدقيقة المتصلة بالشبكة الكهربائية
Subject
:
Faculty of Engineering
Document Language
:
Arabic
Abstract
:
Most grid-connected DC/AC inverters use traditional proportional–integral (PI) controllers in a synchronous frame. In addition to poor disturbance rejection capabilities, these PI controllers also exhibit steady-state errors for sinusoidal reference signals. To address these drawbacks, this thesis investigates the use of a high-order controller in the stationary frame and then compares it with the standard PI controller. The effectiveness of the high-order controller in the stationary frame has been examined by providing an infinite gain at a resonance frequency. In this thesis, the design of high-order and PI controllers and tuning instructions are explained. Furthermore, both high-order and PI current-controlled two-level and three-level neutral point clamped (NPC) inverters are compared. Various operational conditions are used for the comparison. The high-order controller reduced the total harmonic distortion (THD) of the injected current by 1.15% for the two-level inverter in normal conditions as compared to the PI controller and 0.9% for the three-level NPC inverters. Furthermore, it reduced the THD in balanced abnormal conditions by 0.5% for the two-level inverter and 0.18% for the three-level NPC inverters. However, the PI in dq controller has a lower THD during unbalance and short circuit conditions.
Supervisor
:
Dr. Muhyaddin Jamal Rawa
Thesis Type
:
Master Thesis
Publishing Year
:
1444 AH
2023 AD
Added Date
:
Tuesday, July 18, 2023
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
نواف عثمان المعطاني
Almatani, Nawaf Othman
Researcher
Master
Files
File Name
Type
Description
49265.pdf
pdf
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