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Study the impact of transient state on the doubly fed induction generator for various wind speeds
Journal of Engineering and Applied Science volume 70, Article number: 65 (2023)
Abstract
Recently, renewable resources such as wind, hydro, and tidal have experienced a rapid development. Electricity production, based on wind, has been concentrated on a large scale. Additionally, a doubly fed induction generator has been used in wind farms on a large scale. This machine is influenced by the multiple transient states that are happening in the grid. Many researchers studied the effect of voltagedip on DFIG performance; none of them studied the effect of voltagedip sharing with windspeed changing for both sub and hypersynchronous modes. In this paper, DFIG behavior is investigated under a transient state which is represented by 3phase voltagedip, in both operation modes (subsynchronous & hypersynchronous) with various values of the wind speed. Based on MATLAB Simulink, the various DFIG parameters are extracted to determine the relation between voltagedip, variable wind speed, and DFIG performance. Results show that the parameters that are affected were rotorcurrent, rotorvoltage, and DCLink voltage, while statorcurrent and statorflux are not affected. It is also shown that DCLink voltage values are smaller in the hypersynchronous mode compared with subsynchronous one.
Introduction
Recently, wind energy has been widely employed for its positive effect on the environment decreased cost and more advantages. Generally, windturbine generators are designed to be variable or fixed speed. Undoubtedly, doubly fed induction generator (DFIG) is one of the major technologies for windturbine WT manufacturers. It is suitable cost [1] and has the ability to provide a power to grid at constant frequency and voltage with variable rotor speed [2]. Despite the previous features, DFIG has some drawbacks such as absorption of reactive power and disability to control the voltage in existence of the rotor variable speed; thus, power converters should be used. The basic feature is to integrate power converters with DFIG that is the small fraction of the total power which is provided by the DFIG stator and which in turn connects to the power grid directly [3]. Size, overall costs, and power loses of power converters for DFIG are smaller compared to fullsize power converter. The rotor side of this machine could be operated at multiple rotationally speeds; by this way, the optimized ayrodynamic efficiency could be achieved. Therefore, DFIG could operate in two modes: the first one is the subsynchronous, and the other is the supersynchronous [4]. The voltage disturbances could be named as “voltagedips.” This term illustrates the drop of the grid voltage due to fault occurrence in the power system [5]. WT based on DFIG is influenced by these disturbances at the contact point; this could also influence on the power converters and contactors of this system [6]. Voltage sag impacts on both DFIG and the power system, active power (P) is decreased, and the reactive power (Q) is increased. Moreover, the dcbus voltage is increased to a considerable value, and the rotorcurrent has a considerable magnitude. Chen et al. [7] explained the totalharmonic distortion of the DFIG parameters under multiple kinds of voltagedip with various magnitudes [8]. Voltage sag is basically associated with faults, and it may happen due to massive loads or during starting the large power machines [9]. When voltagedip occurs, the stator is directly impacted [10]. Due to the electromagnetic connection between stator and rotor winding, voltage disturbance on the stator causes a considerable EMF in the rotor winding, which leads to create overcurrents in the rotor. These overcurrents have the ability to damage the semiconductor’s elements at RSC, and therefore, the DFIG is disconnected [11]. Majority of countries improved their codes related to WT connected with power grids, to keep reliability and quality in power grid. According to these codes, WTs should remain connected to the grid during voltage disturbance and after recovering its normal value [12]. Ref. [13] observed that overvoltage which is produced by voltagedips may damage the DCLink capacitor. Overcurrent is created in the rotor due to losing RSC control when voltagedip is occurred [14]. According to [15], high magnitude of voltagedip causes a high overvoltage on the DCLink. Therefore, a current passes in the DCLink due to power direction reversing. Statorflux magnitude is shifted from normal magnitude to a novel steadystate magnitude [16]. Some researchers such as [17] concentrated on the dynamic performance of DFIG and the effects of excitation system based on RSC and GSC converters, by decreasing the transitive relationship of the transient cases. According to [18], PI controllers should be employed to regulate the RSC and GSC to control P&Q powers for both normal and transient operation conditions. Duggirala and Gundavarapu [19] investigated the instability that is resulted due to the voltage swells; statorflux decay during the voltage swell is not occurred rapidly. Makhoba [20] investigated the basic challenges that are associated with voltage disturbances and determined the causes of these dips [21]. Presented the dynamic operation of DFIG under singlephase fault. Previous works are concentrated on the impact of voltagedip on DFIG performance with a specified wind speed. Actually, wind system works with variable wind speed; thus, it is necessary to take into consideration the wind speed changes. It is found that previous studies concentrated on study DFIG performance under distribution for a fixed wind speed to facilitate the parameters’ observation; none of them has taken into consideration the variation of the wind speed. Therefore, there is a main question about as follows: How the variable wind speed could affect on DFIG performance under voltagedip? And in this paper, we would define these effects to answer the study question.
Our work aims to investigate DFIG performance under voltagedip for multiple wind speeds to determine the impact of these factors on DFIG performance as the following:

1
Investigate the impact of voltagedip on (rotorcurrent, statorcurrent, statorflux, rotorvoltage, DCLink voltage) in subsynchronous mode (7.5, 8, 8.5) wind speeds.

2
Investigate the impact of voltagedip on (rotorcurrent, statorcurrent, statorflux, rotorvoltage, DCLink voltage) in hypersynchronous mode (10, 10.5, 11, 11.5) wind speeds.
Background
A threephase voltage grid is applied directly to the DFIG stator; this creates a magnetic field in the stator windings [1]. For DFIG rotor, the supply is achieved by varying voltage and frequency to reach various operating conditions such as torque and speed. To implement this, a 3phase backtoback converter should be used. Figure 1 represents the general structure of WT based on DFIG.
DFIG has the ability to operate in three various modes according to the slip sign. There are three various modes of operation [22]:

Subsynchronous: \(\mathrm{S}>0\)

Hypersynchronous \(\mathrm{S}<0\)

Synchronous \(\mathrm{S}=0\)
The operation with multispeeds is implemented by managing the rotor circuit using an external device represented by electronic converters. Figure 1 presented the direct connection of the DFIG stator to the grid. However, the rotor is tied by power converters to the grid. By this way, the power is exchanged by these converters with the grid [23]. By controlling the RSC, the generator speed is regulated to implement the highest extraction of wind energy, thereby working in subsynchronous and hypersynchronous modes [24].
Methods
Modeling the system of wind energy based on DFIG
Wind system based on the DFIG consists basically of wind turbine, backtoback converters, and the doubly fed induction machine as a generator. These components are represented mathematically.
Aerodynamic representation of the turbine
This model evaluates mechanical torque for air flowing on the turbine, to compute the rotor output power. Wind velocity is defined by the wind average quantity which is caught on the area of the turbine’s rotating blade; the torque of turbine’s rotor is formulated as follows [25]:
where R: rotor’s radius of WT, \(\uprho\): air density, \(\mathrm{V\omega }\): wind speed, \({C}_{\mathrm{p}}\): coefficient of power (defined by the parameters of WT), β: turbine’s pitch –angle, and λ: tip – speed ratio.
There is a relation between \({\mathrm{C}}_{\mathrm{p}}\) and the coefficient of torque \({\mathrm{C}}_{\mathrm{t}}\):
Mechanical energy of the wind farm could be formulated as follows:
DFIG representation mathematically
Based on Park transformation, the 3phase quantities of DFIG machine are transformed to dq reference frame as shown in the Fig. 2:
According to [26, 27], the mathematical equations could be as follows:
\({\mathrm{V}}_{\mathrm{ds}},{V}_{qs}, {i}_{ds},{\Psi }_{\mathrm{ds}}\): Represent stator voltage, stator current, and statorflux, respectively, according to daxis, \({R}_{s}\): stator resistance
\({\mathrm{V}}_{\mathrm{dr}},{\mathrm{V}}_{\mathrm{qr}}, {\mathrm{i}}_{\mathrm{dr}},{\Psi }_{\mathrm{dr}}\), rotorvoltage, rotor current, and rotor flux, respectively, according to qaxis.
\({\mathrm{R}}_{\mathrm{r}}\): Rotor resistance, \({\omega }_{r}\): rotor speed \(\sigma\) is the machine’s leakage coefficient.
\({\mathrm{L}}_{\mathrm{r}}\) and \({\mathrm{L}}_{\mathrm{s}}\) represent rotor inductance and stator inductance respectively.
The formula of torque is represented as follows [28]:
where P: poles’ machine number and \({\mathrm{L}}_{\mathrm{r}}\) rotor inductance.
Rotorside converter (RSC)
The main function of the RSC is active and reactive power regulation independently. This is achieved by the vectorcontrol application [25]. The control strategy includes two control loops for rotor current to get the reference voltages. The control scheme is built based on Eqs. 7 and 8 [29]. RSC injecting currents into the rotor circuit which adjust the rotor speed values according to the wind speed change [30].
Symmetric dip for the voltage
Voltagedip is defined as a decline in the amplitude of voltage for several milliseconds. There are two types of voltage dip: symmetrical and nonsymmetrical [31, 32].
Simulink implementation and discussion
This section investigates the performance of DFIG to observe the basic voltagedip effects for both sub and hypersynchronous modes. The WT and DFIG are modeled in the MATLAB Simulink environment. Power system consists of a 2 MW DFIG, and WT, and RSC and GSC control schemes. Figure 3 presented the implemented model in MATLAB. DFIG works at variable wind speeds (7.5, 8, 8.5) m/s for the subsynchronous mode and (10, 10.5, 11, 11.5) m/s for the hypersynchronous mode. DCLink voltage value is 1150 V under steadystate operation. The symmetric voltagedip occurred at 3 s and stopped at 3.5 s (Fig. 3).
Tables 1 and 2 show the parameters of the system that are used in this study.
Results and discussion
The performance of DFIG is implemented under two operating modes (sub & hypersynchronous) under symmetric voltagedip as the following:
Subsynchronous
In this case, DFIG experiences a voltagedip that is occurring at period time between 3 and 3.5 s and the wind speeds between 7.5, 8, and 8.5 m/s; both stator and rotor currents, DCLink voltage statorFlux, and rotorvoltage are measured for different wind speeds under symmetric voltagedip. The measured parameters are summarized in Table 3.
The symmetric voltagedip is shown in Fig. 4. In this case, overcurrents in both stator and rotor are created; this impacts directly on the RSC and may lead to disconnect the wind system from the main grid, which reduce the reliability. Figure 5 shows the peak values of the rotor overcurrent for various windspeed values. It is found that \({I}_{r}\) got the highest peak at the windspeed 7.5 m/s in the subsynchronous mode, and it decreased by increasing the windspeed value.
Despite that statorcurrent \({I}_{s}\) is increased from its value before the dip to a higher value during the dip, it is not affected by the variance in wind speed. Additionally, statorflux \({\varphi }_{s}\) also is not affected by windspeed variance; however, its value during the dip is smaller than its value before the dip. Statorcurrent and flux shape and behavior are agreed with [33, 34] for the same power 2 MW and at fixed wind speed. Moreover, overvoltages are appeared, and this also impacts on the DCLink that might be deteriorated due to this overvoltages (Fig. 6). The DClink voltage oscillates under and over the reference value (1150 V), and it was found that it is slightly affected by varying the wind speed. Based on fast Fourier transform (FFT), THD values are obtained for the measured rotorcurrent values. It could be seen from Table 1 that THD values are decreased when the rotor peaks are decreased. From Fig. 7. it could be observed that the effect of both, voltagedip and the variable windspeed, on the rotorvoltage. Generally, the disturbance in the voltagegrid impacts on rotorvoltage of DFIG and leads to create overcurrents with high magnitudes; however, after clearing the disturbance, \({V}_{r}\) did not return to its value before the disturbance. It transforms to a new value that is higher than the normal value. This makes a challenge for the RSC operating during the voltage dip. Thereby, with variable windspeed values, rotorvoltage is also changed (Figs. 7, 8 and 9).
Hypersynchronous
DFIG performance is investigated in this section under voltagedip which occurring at 3 to 3.5 s, with the hypersynchronous speed between (10, 10.5, 11, 11.5) m/s. The measured DFIG parameters in this case are summarized in Table 4.
In this case, \({I}_{S},{\varphi }_{s}\) are affected only by the voltagedip at 3 s, and results of these parameters are similar to the subsynchronous mode’s ones. However, rotor current is decreased in this mode with the wind speed increasing to 10.5 m/s, and then it is increased for values that are higher than 11 m/s. In general, the voltagedip impacts on the performance of DFIG for both subsynchronous and supersynchronous operation modes. From the above results, it is obviously presented that the smaller values of rotor currents under voltage dips are achieved around 8 m/s for the wind speed (Fig. 10).
DC voltage is influenced by changing the operation mode from subsynchronous to hypersynchronous. DCLink voltage values are smaller in the hypersynchronous mode compared with subsynchronous one in [12, 35]. For hypersynchronous mode, the DC voltages have the same values for different wind speeds, and these values are higher than the reference value 1150 V. DCLink voltage presents oscillations in this mode (Fig. 11). For the rotorvoltage \({V}_{r}\), its magnitude is also changed according to the variable wind speed. It is also transformed from the normal value before disturbance to a higher value after clearing the disturbance (Fig. 12).
Conclusions
DFIG provides a flexible behavior due to the ability to change the rotor speed according to variable wind speeds. However, DFIG has a set of challenges associated with its sensitivity to the disturbances that may occur in the grid. These disturbances impact on DFIG performance. In this study, the behavior of DFIG is investigated under symmetric voltagedip for multiple values of wind speed for both modes (subsynchronous & hypersynchronous). From the results, it could be observed that the rotor current is reached to high values under voltage dip. In the subsynchronous mode, rotorcurrent peak is increased during the voltage dip, with increasing the wind speed unlike the hypersynchronous mode. These high currents impact on the RSC converter and increase the power losses; thus, it is necessary to improve the protection schemes to mitigate the high peaks of rotor currents. DCLink is not affected by the windspeed variation, but its magnitude is increased during the voltage dip, and it presented oscillations. DCLink should be protected from the overvoltage. Furthermore, overvoltages are created for both operation modes. Moreover, rotorvoltage is transformed from normal value before voltagedip to a higher value after clearing the dip, this leads to some risks on RSC and DFIG performance, and statorflux is affected only by the voltagedip where it transformed from its normal value before the dip into higher value after clearing the dip. Overcurrents and overvoltages are considered as challenges for the power quality that is provided to the grid. Additionally, overcurrents cause power losses and damage the power converters. Generally, the voltagedip effects lead to disconnect the wind system from the main grid. Therefore, DFIG should be equipped with powerful schemes such as crowbar, DC chopper, and FACTs device to improve its performance under voltage dip. At the end, in perspectives of this study, voltagedip is considered a serious limitation for DFIG especially with variable speed that represents the actual operation of DFIG. It should develop powerful techniques having the ability to adopt with variable windspeed to mitigate the voltagedip sharing with changing windspeed effects will be the aim of our future work.
Availability of data and materials
The datasets generated and analyzed during the current study are available in the manuscript and attached files of tables and figures.
Abbreviations
 \(\mathrm{DFIG}\) :

Doubly fed inductiongenerator
 WT:

Wind turbine
 \({\mathrm{V}}_{\mathrm{ds}},{V}_{qs}, {i}_{ds},{\Psi }_{\mathrm{ds}}\) :

Stator (voltage, current, and flux) respectively according to daxis
 \({R}_{s}\) :

Stator resistance
 \({\mathrm{V}}_{\mathrm{dr}},{\mathrm{V}}_{\mathrm{qr}}, {\mathrm{i}}_{\mathrm{dr}},{\Psi }_{\mathrm{dr}}\) :

Rotor (voltage, current, and flux) respectively according to qaxis
 \({R}_{r}\) :

Rotor resistance
 \(\sigma\) :

Machine’s leakage coefficient
 \({T}_{em}\) :

Electromagnetic torque
 \({P}_{s}\) :

Power stator
 RSC:

Rotorside converter
 GSC:

Gridside converter
References
Aljafari B, Pamela SJ, Vairavasundaram I, Singh RR (2022) Steady state modeling and performance analysis of a wind turbinebased doubly fed induction generator system with rotor control. Energies 15(9):3327. https://doi.org/10.3390/en15093327
Chhipą AA, Chakrabarti P, Bolshev V, Chakrabarti T, Samarin G, Vasilyev AN, Kudryavtsev A (2022) Modeling and control strategy of wind energy conversion system with gridconnected doublyfed induction generator. Energies 15(18):6694. https://doi.org/10.3390/en15186694
Dannier A, Fedele E, Spina I, Brando G (2022) Doublyfed induction generator (DFIG) in connected or weak grids for turbinebased wind energy conversion system. Energies 15(17):6402. https://doi.org/10.3390/en15176402
Singh R (2017) Contrast the performance of doubly fed induction generator during symmetrical and nonsymmetrical fault condition by varying wind speed, Master Thesis, School of Electronics and Electrical Engineering, Phagwara, Punjab
Alshibani A, Hasanah, R, Suyono H (2018) Grid voltage dip impacts on the DFIG wind turbine and its main AC contactor performances. Jurnal EECCIS; p. 54–60. doi: https://doi.org/10.21776/jeeccis.v12i2.523
Rafiee Z, Rafiee M, Aghamohammadi M (2018) Effects of voltage sags on the doubly fed induction generator using PI controllers. Preprints. https://doi.org/10.20944/preprints201806.0189.v1
Chen C, Bagheri A, Bollen M H, Bongiorno M (2019). The impact of voltage dips to lowvoltageridethrough capacity of doubly fed induction generator based wind turbine. In 2019 IEEE Milan PowerTech. IEEE; pp. 1–6. https://doi.org/10.1109/PTC.2019.8810749
Kumar N, Chelliah TR, Srivastava SP (2016) Analysis of doublyfed induction machine operating at motoring mode subjected to voltage sag. Eng Sci Technol Int J 19(3):1117–1131. https://doi.org/10.1016/j.jestch.2016.01.015
Tang L, Han Y, Yang P, Wang C, Zalhaf AS (2022) A review of voltage sag control measures and equipment in power systems. Energy Rep 8:207–216. https://doi.org/10.1016/j.egyr.2022.05.158
Qin B, Li H, Zhou X, Li J, Liu W (2020) Lowvoltage ridethrough techniques in DFIGbased wind turbines: a review. Appl Sci 10(6):2154. https://doi.org/10.1109/IECON.2013.6700413
Soomro M, Memon ZA, Baloch MH, Mirjat NH, Kumar L, Tran QT, Zizzo G (2023) Performance improvement of gridintegrated doubly fed induction generator under asymmetrical and symmetrical faults. Energies 16(8):3350. https://doi.org/10.3390/en16083350
Ansari AA, Dyanamina G (2022) Fault ridethrough operation analysis of doubly fed induction generatorbased wind energy conversion systems: a comparative review. Energies 15(21):8026. https://doi.org/10.3390/en15218026
Zhou X, Tang Y, Shi J (2017) Enhancing LVRT capability of DFIGbased wind turbine systems with SMES series in the rotor side. Int J Rotating Mach 2017:1–8. https://doi.org/10.1155/2017/4635452
Ouyang J, Zheng D, Xiong X, Xiao C, Yu R (2016) Shortcircuit current of doubly fed induction generator under partial and asymmetrical voltage drop. Renew Energy 88:1–11. https://doi.org/10.1016/j.renene.2015.10.062
Cheikh R, Belmili H, Menacer A, Drid S, ChrifiAlaoui L (2019) Dynamic behavior analysis under a grid fault scenario of a 2 MW double fed induction generatorbased wind turbine: comparative study of the reference frame orientation approach. Int J Syst Assur Eng Manag 10:632–643
Alsmadi YM, Xu L, Blaabjerg F, Ortega AJP, Abdelaziz AY, Wang A, Albataineh Z (2018) Detailed investigation and performance improvement of the dynamic behavior of gridconnected DFIGbased wind turbines under LVRT conditions. IEEE Trans Ind Appl 54(5):4795–4812. https://doi.org/10.1109/TIA.2018.2835401
Ouyang J, Xiong X (2014) Dynamic behavior of the excitation circuit of a doublyfed induction generator under a symmetrical voltage drop. Renew Energy 71:629–638. https://doi.org/10.1016/j.renene.2014.06.029
Rafiee Z, Rafiee M, Aghamohammadi MR (2020) The voltage dip and doubly fed induction generator with considering uncertainty conditions. Bull Electr Eng Inform 9(1):30–38. https://doi.org/10.11591/eei.v9i1.1669
Duggirala VN, Gundavarapu V (2015) Dynamic stability improvement of grid connected DFIG using enhanced field oriented control technique for high voltage ride through. J Renew Energy. https://doi.org/10.1155/2015/490178
Makhoba K G (2020) Consideration of the effects of symmetrical and asymmetrical voltage dips in the control and operation of a gridconnected doublyfed induction generator, (Doctoral dissertation). https://researchspace.ukzn.ac.za/
Wu YK, Shu WH, Liao JY, Wu WC (2019) Dynamic behavior of the doubly fed induction generator during threephase and singlephase voltage dips IEEE 2nd International Conference on Knowledge Innovation and Invention (ICKII). IEEE; p. 149–152. doi: https://doi.org/10.1109/TEC.2006.878241
Thomas T, Asok P (2020) Event analysis and realtime validation of doubly fed induction generatorbased wind energy system with grid reactive power exchange under subsynchronous and supersynchronous modes. Eng Rep 2(12):e12282. https://doi.org/10.1002/eng2.12282
Mwaniki J, Lin H, Dai Z (2017) A condensed introduction to the doubly fed induction generator wind energy conversion systems. J Eng. doi: https://doi.org/10.1155/2017/2918281
Herizi A (2020) Amelioration des performances de la commande non lineaire robuste d’un moteur asynchrone a double alimentation “mada” (doctoral dissertation, université m'sila). http://dspace.univmsila.dz:8080/
Qi L, Jiahui W, Haiyun W, Hua Z, Jian Y (2023) Effect of DFIG control parameters on small signal stability in power systems. Sci Rep 13(1):2476
Mahalakshmi R, Viknesh J, Thampatty K S (2016) Mathematical modelling of grid connected doubly fed induction generator based wind farm. In 2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES). IEEE; pp. 1–6. https://doi.org/10.1109/PEDES.2016.7914301
Ma Y, Zhu D, Zou X, Kang Y, Guerrero JM (2022) Transient characteristics and quantitative analysis of electromotive force for DFIGbased wind turbines during grid faults. Chin J Electr Eng 8(2):3–12. https://doi.org/10.23919/CJEE.2022.000010
Gupta R, Dyanamina G (2019) MATLAB simulation of DTCSVM of doubly fed induction generator for wind energy system. In 2019 Innovations in Power and Advanced Computing Technologies (iPACT). Vol. 1. IEEE; p. 1–6. https://doi.org/10.1109/iPACT44901.2019.8959990
Singh R (2017) Contrast the performance of doubly fed induction generator during symmetrical and nonsymmetrical fault condition by varying wind speed, master thesis, School of Electronics and Electrical Engineering Lovely Professional University. http://dspace.lpu.in:8080/
Ananth DVN, Kumar GN (2016) Fault ridethrough enhancement using an enhanced field oriented control technique for converters of grid connected DFIG and STATCOM for different types of faults. ISA Trans 62:2–18. https://doi.org/10.1016/j.isatra.2015.02.014
Makhoba K G (2020). Consideration of the effects of symmetrical and asymmetrical voltage dips in the control and operation of a gridconnected doublyfed induction generator (doctoral dissertation). https://ukzndspace.ukzn.ac.za/
Chung PD (2019) Voltage enhancement on DFIG based wind farm terminal during grid faults. Eng Technol Appl Sci Res 9(5):4783–4788. https://doi.org/10.48084/etasr.3117
Abdi Y (2022) Modeling, control, and analysis of doubly fed induction generator based on wind turbine system. Master thesis.
Ibrahim AA, Solomin EV (2018) Impacts of voltage dips in doubly fed induction motor for wind turbine generation systems. Becтник ЮжнoУpaльcкoгo гocyдapcтвeннoгo yнивepcитeтa Cepия: Энepгeтикa 18(4):41–51
Smina T, Beevi A, Ramalyer S (2020) Control of wind driven doubly fed induction generator under unbalanced grid voltage conditions. Int J Appl Eng Res 15:695–699
Acknowledgements
We would like to express our special thanks of gratitude to our Electrical Engineering Department, AlBaath University, for facilitating and supporting this work.
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Alsati, B.A., Ibrahim, G.I. & Moussa, R.R. Study the impact of transient state on the doubly fed induction generator for various wind speeds. J. Eng. Appl. Sci. 70, 65 (2023). https://doi.org/10.1186/s44147023002326
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DOI: https://doi.org/10.1186/s44147023002326