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 TypeDr GradeEmail
نواف عثمان المعطانيAlmatani, Nawaf OthmanResearcherMaster 

Files

File NameTypeDescription
 49265.pdf pdf 

Back To Researches Page