Virtual Inertia Implementation in Dual Two-Level Voltage Source Inverters

Dashtaki, Mohammad Ali; Nafisi, Hamed; Pouresmaeil, Edris; Khorsandi, Siavash

doi:10.1109/pedstc49159.2020.9088389

Cited by 14 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because it is assumed that only the active power is in control and consequently, the reference current along with the d-axis is obtained through (2). 2) is the expected injection power of the converter and I d is the reference d-axis current at the reference frequency.…”

Section: Calculation Of the Reference Currentsmentioning

confidence: 99%

“…Today, microgrids are integrated with power converter‐based Renewable Energy Sources (RESs), such as solar photovoltaics and wind energy which have caused AC power systems to undergo changes such as low inertia [1]. Therefore, the output voltage magnitude and frequency of such systems encounter many changes in transient conditions, and this issue can affect the stability of microgrids during severe dynamic events [2]. In order to ensure system stability, it is necessary to add virtual inertia to the control system of the grid‐connected RESs‐based power converters, in order to participate in the regulation of the output voltage magnitude and frequency [3].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Virtual synchronous generator‐based control of modular multilevel converter for integration into weak grid

HosseinNataj,

Gholamian,

Rezanejad

et al. 2023

IET Renewable Power Gen

View full text Add to dashboard Cite

Integrating Power Electronics Converters (PECs)‐based renewable energy sources can establish a weak grid due to the substantial inertia reduction leading to severe frequency fluctuations. In this paper, a control strategy based on the Virtual Synchronous Generator (VSG) concept is designed for a three‐phase Modular Multilevel Converter (MMC) connected to a weak grid. The proposed VSG control approach improves the frequency response during transient mode, resulting in a 66.7% enhancement at the Point of Common Coupling (PCC). The proposed strategy is shaped within four control loops wherein the VSG‐dependent output current control possesses the duty of enriching the MMC output current tracking capability. Focusing on the MMC output current‐based transfer function, the effectiveness of this capability is guaranteed using the frequency domain analysis including the Nyquist and Bode diagrams. Moreover, a comprehensive discussion was carried out regarding the impact of VSG on the voltage of submodule capacitors and the circulating current. Simulation results in MATLAB/Simulink environment validate the accuracy and weak grid‐connected MMC performance under the proposed VSG‐based control technique. To further verify the superiority of the proposed strategy, two control techniques including Droop and SEBIR are compared with the VSG proposed controller.

show abstract

Section: Calculation Of the Reference Currentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Virtual synchronous generator‐based control of modular multilevel converter for integration into weak grid

HosseinNataj,

Gholamian,

Rezanejad

et al. 2023

IET Renewable Power Gen

View full text Add to dashboard Cite

show abstract

“…A large grid-connected cascaded PV system featuring DC-DC converters and cascaded multilevel inverters use a decoupled total power controller to tackle all of these concerns. According to [148,149], the CF-DC-DC DAB's converter is controlled by a single H-bridge module mostly on CHBMLI. It uses a PI and PR controller to change the duty ratio (D) and phase shift angle in order to switch between the PV voltage and the DC-link voltage.…”

Section: Control Techniques Of Multiple Voltage Sources Fed Symmetric...mentioning

confidence: 99%

A Comprehensive Review on Multilevel Inverters for Grid-Tied System Applications

et al. 2022

View full text Add to dashboard Cite

Multi-level inverters (MLIs) have been widely used in recent years due to their various advantages in industrial and grid-connected applications. Traditional MLI topologies are being hampered by the rapid surge of renewable energy systems (RES) as a result of performance difficulties such as poor power reliability, an economically unviable structure, and a lack of efficiency. These difficulties are due to the traditional MLI topologies’ inability to keep up with the increasing demand for RES. Because of concerns about performance and limitations posed by classic MLI topologies, researchers have found themselves driven to the idea of building innovative hybrid MLI topologies. This study provides a comprehensive analysis of multilevel inverter systems that are wired into the main power supply. Grid-connected inverter types and their configurations are discussed in depth in this review. Diverse multi-level inverter topologies, as well as the different approaches, are divided into various categories and discussed in depth. Additionally, a number of control reference frames for inverters were brought forward for discussion. Furthermore, different inverter control strategies were investigated, followed by a tabular summary of recent developments in the inverter-related literature for the convenience of the readers. Moreover, the recently proposed grid-connected multi-level inverter systems were discussed including their findings and innovations. In conclusion, a brief description of the study’s scope was offered and research directions for future studies were provided.

show abstract

“…In fact, the second and third windings of winding crossed coupled inductor act as voltage source and are arranged in series in order to achieve high gain and also to reduce the voltage stress of the switches. The converter presented in reference [23] is structurally similar to the reference converter [24]; the difference is that in this converter, instead of the active control circuit, a passive control circuit is used.…”

Section: Introductionmentioning

confidence: 99%

A hybrid scheme for optimal performance of photovoltaic system converters with multilayer structure

Zand

Nasab

Hanif

et al. 2022

The Journal of Engineering

View full text Add to dashboard Cite

The interface of photovoltaic (PV) systems to the grid requires an efficient control strategy to operate, control, and improve power quality. The output voltage of the solar array, which may be accompanied by significant voltage variations, must be controlled and converted to a higher voltage for grid connection applications of photovoltaic system by a DC‐DC converter that commands more attention. Recently, due to the increasing use of renewable sources, multilayer structure with different structures and designs to provide power and stability has been researched because the output voltage of solar arrays is usually low, so it is increasing to DC‐to‐DC converters, needed with optimal interest and efficiency. In this paper, a method to improve the performance of DC–DC converter used in PV system by using a combined design of forward and fly‐back is presented. Due to the fact that isolated converters, flyback, and forward converters have a simple structure and are easy to control, but this converter is affected by high stress voltage. Therefore, this converter cannot be used for high power applications. To solve this problem, it has been improved in the proposed converter with the overlay and triple induction technique, which is a very good improvement on the voltage gain parameters in the short duty cycle. The voltage drop across the semiconductor switch is reduced. The investigations performed that the proposed DC/DC converter in Simulink MATLAB has been simulated. The results show that the suggested converter has an ideal efficiency of roughly 82.86% and provided higher voltage gain, decreased voltage stress, and reduced voltage jumps caused by disconnection.

show abstract

Virtual Inertia Implementation in Dual Two-Level Voltage Source Inverters

Cited by 14 publications

References 15 publications

Virtual synchronous generator‐based control of modular multilevel converter for integration into weak grid

Virtual synchronous generator‐based control of modular multilevel converter for integration into weak grid

A Comprehensive Review on Multilevel Inverters for Grid-Tied System Applications

A hybrid scheme for optimal performance of photovoltaic system converters with multilayer structure

Contact Info

Product

Resources

About