Dual Two-Level Voltage Source Inverter Virtual Inertia Emulation: A Comparative Study
In this paper, the virtual synchronous generator (VSG) concept is utilized in the controller of the grid-connected dual two-level voltage source inverter (DTL VSI). First, the topology of the VSG and the DTL VSI are presented. Then, the state-space equations of the DTL VSI and the grid-connected two...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-02-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/4/1160 |
| _version_ | 1797395648260079616 |
|---|---|
| author | Mohammad Ali Dashtaki Hamed Nafisi Amir Khorsandi Mojgan Hojabri Edris Pouresmaeil |
| author_facet | Mohammad Ali Dashtaki Hamed Nafisi Amir Khorsandi Mojgan Hojabri Edris Pouresmaeil |
| author_sort | Mohammad Ali Dashtaki |
| collection | DOAJ |
| description | In this paper, the virtual synchronous generator (VSG) concept is utilized in the controller of the grid-connected dual two-level voltage source inverter (DTL VSI). First, the topology of the VSG and the DTL VSI are presented. Then, the state-space equations of the DTL VSI and the grid-connected two-level voltage source inverter (TL VSI), regarding the presence of the phase-locked loop (PLL) and the VSG, are given. Next, the small-signal modeling of the DTL VSI and the TL VSI is realized. Eventually, the stability enhancement in the DTL VSI compared with the TL VSI is demonstrated. In the TL VSI, large values of virtual inertia could result in oscillations in the power system. However, the ability of the DTL VSI in damping oscillations is deduced. Furthermore, in the presence of nonlinear loads, the potentiality of the DTL VSI in reducing grid current Total Harmonic Distortion (THD) is evaluated. Finally, by using a proper reference current command signal, the abilities of the DTL VSI and the TL VSI in supplying nonlinear loads and providing virtual inertia are assessed simultaneously. The simulation results prove the advantages of the DTL VSI compared with the TL VSI in virtual inertia emulation and oscillation damping, which are realized by small-signal analysis. |
| first_indexed | 2024-03-09T00:38:33Z |
| format | Article |
| id | doaj.art-7b3dd1b63b8e42db99d35ef40c851843 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T00:38:33Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-7b3dd1b63b8e42db99d35ef40c8518432023-12-11T17:59:24ZengMDPI AGEnergies1996-10732021-02-01144116010.3390/en14041160Dual Two-Level Voltage Source Inverter Virtual Inertia Emulation: A Comparative StudyMohammad Ali Dashtaki0Hamed Nafisi1Amir Khorsandi2Mojgan Hojabri3Edris Pouresmaeil4Department of Electrical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran 15875-4413, IranDepartment of Electrical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran 15875-4413, IranDepartment of Electrical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran 15875-4413, IranCompetence Center of Digital Energy & Electric Power, Institute of Electrical Engineering (IET), Lucerne University of Applied Sciences and Arts, 6048 Horw, Lucerne, SwitzerlandDepartment of Electrical Engineering and Automation (EEA), Aalto University, 02150 Espoo, FinlandIn this paper, the virtual synchronous generator (VSG) concept is utilized in the controller of the grid-connected dual two-level voltage source inverter (DTL VSI). First, the topology of the VSG and the DTL VSI are presented. Then, the state-space equations of the DTL VSI and the grid-connected two-level voltage source inverter (TL VSI), regarding the presence of the phase-locked loop (PLL) and the VSG, are given. Next, the small-signal modeling of the DTL VSI and the TL VSI is realized. Eventually, the stability enhancement in the DTL VSI compared with the TL VSI is demonstrated. In the TL VSI, large values of virtual inertia could result in oscillations in the power system. However, the ability of the DTL VSI in damping oscillations is deduced. Furthermore, in the presence of nonlinear loads, the potentiality of the DTL VSI in reducing grid current Total Harmonic Distortion (THD) is evaluated. Finally, by using a proper reference current command signal, the abilities of the DTL VSI and the TL VSI in supplying nonlinear loads and providing virtual inertia are assessed simultaneously. The simulation results prove the advantages of the DTL VSI compared with the TL VSI in virtual inertia emulation and oscillation damping, which are realized by small-signal analysis.https://www.mdpi.com/1996-1073/14/4/1160Virtual Synchronous Generator (VSG)Virtual InertiaDual Two-Level Voltage Source Inverter (DTL VSI)Two-Level Voltage Source Inverter (TL VSI)small signal stability analysisstability enhancement |
| spellingShingle | Mohammad Ali Dashtaki Hamed Nafisi Amir Khorsandi Mojgan Hojabri Edris Pouresmaeil Dual Two-Level Voltage Source Inverter Virtual Inertia Emulation: A Comparative Study Energies Virtual Synchronous Generator (VSG) Virtual Inertia Dual Two-Level Voltage Source Inverter (DTL VSI) Two-Level Voltage Source Inverter (TL VSI) small signal stability analysis stability enhancement |
| title | Dual Two-Level Voltage Source Inverter Virtual Inertia Emulation: A Comparative Study |
| title_full | Dual Two-Level Voltage Source Inverter Virtual Inertia Emulation: A Comparative Study |
| title_fullStr | Dual Two-Level Voltage Source Inverter Virtual Inertia Emulation: A Comparative Study |
| title_full_unstemmed | Dual Two-Level Voltage Source Inverter Virtual Inertia Emulation: A Comparative Study |
| title_short | Dual Two-Level Voltage Source Inverter Virtual Inertia Emulation: A Comparative Study |
| title_sort | dual two level voltage source inverter virtual inertia emulation a comparative study |
| topic | Virtual Synchronous Generator (VSG) Virtual Inertia Dual Two-Level Voltage Source Inverter (DTL VSI) Two-Level Voltage Source Inverter (TL VSI) small signal stability analysis stability enhancement |
| url | https://www.mdpi.com/1996-1073/14/4/1160 |
| work_keys_str_mv | AT mohammadalidashtaki dualtwolevelvoltagesourceinvertervirtualinertiaemulationacomparativestudy AT hamednafisi dualtwolevelvoltagesourceinvertervirtualinertiaemulationacomparativestudy AT amirkhorsandi dualtwolevelvoltagesourceinvertervirtualinertiaemulationacomparativestudy AT mojganhojabri dualtwolevelvoltagesourceinvertervirtualinertiaemulationacomparativestudy AT edrispouresmaeil dualtwolevelvoltagesourceinvertervirtualinertiaemulationacomparativestudy |