Assessment of a High-Order Stationary Frame Controller for Two-Level and Three-Level NPC Grid-Connected Inverters

Nawaf O. Almatani; Abdullah Ali Alhussainy; Sultan Alghamdi; Hossam Kotb; Kareem M. AboRas; Mahendiran Vellingiri; Muhyaddin Rawa

LAPSE

Living Archive for Process Systems Engineering

LAPSE:2023.6903

Published Article

LAPSE:2023.6903

Assessment of a High-Order Stationary Frame Controller for Two-Level and Three-Level NPC Grid-Connected Inverters

Nawaf O. Almatani, Abdullah Ali Alhussainy, Sultan Alghamdi, Hossam Kotb, Kareem M. AboRas, Mahendiran Vellingiri, Muhyaddin Rawa

February 24, 2023

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 article 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 work, the design of high-order and PI controllers and tuning instructions are given. 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 dq controller has a lower THD during unbalance and short circuit conditions.

Record ID

LAPSE:2023.6903

Keywords

grid inverter control, NPC multilevel inverter, PI controller, stationary frame, synchronous frame, tuning

Subject

Process Control

Suggested Citation

Almatani NO, Alhussainy AA, Alghamdi S, Kotb H, AboRas KM, Vellingiri M, Rawa M. Assessment of a High-Order Stationary Frame Controller for Two-Level and Three-Level NPC Grid-Connected Inverters. (2023). LAPSE:2023.6903

Author Affiliations

Almatani NO: Department of Electrical and Computer Engineering, Faculty of Engineering, K. A. CARE Energy Research and Innovation Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Alhussainy AA: Department of Electrical and Computer Engineering, Faculty of Engineering, K. A. CARE Energy Research and Innovation Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Smart Grids Research Group, Center of Research Excellence in Renewable Ener
Alghamdi S: Department of Electrical and Computer Engineering, Faculty of Engineering, K. A. CARE Energy Research and Innovation Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Smart Grids Research Group, Center of Research Excellence in Renewable Ener [ORCID]
Kotb H: Department of Electrical Power and Machines, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt [ORCID]
AboRas KM: Department of Electrical Power and Machines, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt [ORCID]
Vellingiri M: Department of Electrical and Computer Engineering, Faculty of Engineering, K. A. CARE Energy Research and Innovation Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Smart Grids Research Group, Center of Research Excellence in Renewable Ener [ORCID]
Rawa M: Department of Electrical and Computer Engineering, Faculty of Engineering, K. A. CARE Energy Research and Innovation Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Smart Grids Research Group, Center of Research Excellence in Renewable Ener [ORCID]

Journal Name

Energies

Volume

15

Issue

24

First Page

9313

Year

2022

Publication Date

2022-12-08