Pub Date : 2022-01-02DOI: 10.1109/PESGRE52268.2022.9715925
Ishank Shekhar, P. Rajeevan
This paper presents new scheme with reduced hardware complexity for generation of a 24-sided polygonal voltage space vector structure in induction motor drives with open-end stator windings. For variable speed operation of drives, pulse width modulation (PWM) technique such as voltage space vector PWM is used. Conventional hexagonal voltage space vector PWM produces low order harmonics in the inverter output voltages when operated in the over-modulation region. These low order harmonics produce torque pulsations in the motor in addition to the increase in losses. 24-sided polygonal voltage space vector based switching scheme eliminates (or highly suppresses) low order harmonics in over-modulation operation as well as increases the linear modulation range. However, the hardware requirement for generation of 24-sided voltage space vector structure is substantially higher compared to that of hexagonal voltage space vector structure. The virtual vector based scheme proposed in this paper can generate 24-sided polygonal voltage space vector structure in a dual inverter fed open-end winding induction motor with a single DC source with substantial reduction in the hardware requirement. The switching scheme eliminates common mode voltage from motor windings thereby preventing circulation of common mode current even when both inverters share a common DC link. Extensive simulation studies were carried out to validate the proposed schemes. It is then experimentally verified on a laboratory prototype using TMS320F28069M digital signal controller for implementation of the control scheme.
{"title":"Generation of 24-Sided Polygonal Voltage Space Vector Structure with Reduced Hardware Complexity for Induction Motor Drives","authors":"Ishank Shekhar, P. Rajeevan","doi":"10.1109/PESGRE52268.2022.9715925","DOIUrl":"https://doi.org/10.1109/PESGRE52268.2022.9715925","url":null,"abstract":"This paper presents new scheme with reduced hardware complexity for generation of a 24-sided polygonal voltage space vector structure in induction motor drives with open-end stator windings. For variable speed operation of drives, pulse width modulation (PWM) technique such as voltage space vector PWM is used. Conventional hexagonal voltage space vector PWM produces low order harmonics in the inverter output voltages when operated in the over-modulation region. These low order harmonics produce torque pulsations in the motor in addition to the increase in losses. 24-sided polygonal voltage space vector based switching scheme eliminates (or highly suppresses) low order harmonics in over-modulation operation as well as increases the linear modulation range. However, the hardware requirement for generation of 24-sided voltage space vector structure is substantially higher compared to that of hexagonal voltage space vector structure. The virtual vector based scheme proposed in this paper can generate 24-sided polygonal voltage space vector structure in a dual inverter fed open-end winding induction motor with a single DC source with substantial reduction in the hardware requirement. The switching scheme eliminates common mode voltage from motor windings thereby preventing circulation of common mode current even when both inverters share a common DC link. Extensive simulation studies were carried out to validate the proposed schemes. It is then experimentally verified on a laboratory prototype using TMS320F28069M digital signal controller for implementation of the control scheme.","PeriodicalId":64562,"journal":{"name":"智能电网与可再生能源(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89572847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-02DOI: 10.1109/PESGRE52268.2022.9715816
Sivacharan Reddy Devireddy, S. Porpandiselvi, Bhavin Salvi
Photo-voltaic (PV) system has non-linear relation between its output power and operating voltage. It is desired to extract maximum power from the PV system i.e. by operating at maximum power point all the time. Under partial shading conditions, the conventional maximum power point tracking algorithms can’t detect the global peak. A most efficient global maximum power point tracking (GMPPT) technique with less tracking time is required when the change in shading is more rapid. In this paper, a novel GMPPT algorithm is proposed which tracks the global peak using P-I curve, PV curve and I-V curve of the PV system taking current as reference. As the PV current varies with irradiation, the tracking time for the proposed algorithm is low under shading conditions. The tracking time is minimized by calculating $I_{min}$ and $V_{min}$. The knee point regions are estimated by detecting the change in voltage at every iteration. Each knee point region will have one peak point. The regions where global peak does not exist is discarded by adopting a novel current skipping technique. These techniques reduces the tracking time. MATLAB Simulink is used to evaluate the performance of the proposed algorithm for different shading patterns and the results shows that tracking time is less.
{"title":"A GMPPT Algorithm for PV Systems Using Current Reference and P-I Curve Under Partial Shading Conditions","authors":"Sivacharan Reddy Devireddy, S. Porpandiselvi, Bhavin Salvi","doi":"10.1109/PESGRE52268.2022.9715816","DOIUrl":"https://doi.org/10.1109/PESGRE52268.2022.9715816","url":null,"abstract":"Photo-voltaic (PV) system has non-linear relation between its output power and operating voltage. It is desired to extract maximum power from the PV system i.e. by operating at maximum power point all the time. Under partial shading conditions, the conventional maximum power point tracking algorithms can’t detect the global peak. A most efficient global maximum power point tracking (GMPPT) technique with less tracking time is required when the change in shading is more rapid. In this paper, a novel GMPPT algorithm is proposed which tracks the global peak using P-I curve, PV curve and I-V curve of the PV system taking current as reference. As the PV current varies with irradiation, the tracking time for the proposed algorithm is low under shading conditions. The tracking time is minimized by calculating $I_{min}$ and $V_{min}$. The knee point regions are estimated by detecting the change in voltage at every iteration. Each knee point region will have one peak point. The regions where global peak does not exist is discarded by adopting a novel current skipping technique. These techniques reduces the tracking time. MATLAB Simulink is used to evaluate the performance of the proposed algorithm for different shading patterns and the results shows that tracking time is less.","PeriodicalId":64562,"journal":{"name":"智能电网与可再生能源(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90423323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-02DOI: 10.1109/PESGRE52268.2022.9715937
Sheikh Safiullah, Asadur Rahman, Mohd Asim Aftab, S. M. Suhail Hussain
A proportional-integral-derivative (PID) controller has established extensive applications in power system control industry. However, the model driven control law inspite of error driven and noise deprivation in the derivative regulator lead to a undesired control approach using PID controller. To overcome this challenge, a 2nd order error-driven control law based Active-disturbance-rejection-control (ADRC) strategy is developed in the present work. A comparative study of PID and ADRC is done in the present work. The comparison is validated on an IEEE-39 bus system based on concurrent control of system frequency, voltage and corresponding tie-line control using various generations in the form of solar, thermal, geo-thermal and wind plants. Modern day electric vehicles are integrated with different buses of the present hybrid power system. ADRC proves to be more efficient for regulating the system dynamics with respect to PID controller possess sound disturbance rejection capability. ADRC controlled system exhibits low dynamic characteristics and is highly stable to system disturbances.
{"title":"Performance study of ADRC and PID for concurrent Frequency-Voltage Control of Electric Vehicle Incorporated Hybrid Power System","authors":"Sheikh Safiullah, Asadur Rahman, Mohd Asim Aftab, S. M. Suhail Hussain","doi":"10.1109/PESGRE52268.2022.9715937","DOIUrl":"https://doi.org/10.1109/PESGRE52268.2022.9715937","url":null,"abstract":"A proportional-integral-derivative (PID) controller has established extensive applications in power system control industry. However, the model driven control law inspite of error driven and noise deprivation in the derivative regulator lead to a undesired control approach using PID controller. To overcome this challenge, a 2nd order error-driven control law based Active-disturbance-rejection-control (ADRC) strategy is developed in the present work. A comparative study of PID and ADRC is done in the present work. The comparison is validated on an IEEE-39 bus system based on concurrent control of system frequency, voltage and corresponding tie-line control using various generations in the form of solar, thermal, geo-thermal and wind plants. Modern day electric vehicles are integrated with different buses of the present hybrid power system. ADRC proves to be more efficient for regulating the system dynamics with respect to PID controller possess sound disturbance rejection capability. ADRC controlled system exhibits low dynamic characteristics and is highly stable to system disturbances.","PeriodicalId":64562,"journal":{"name":"智能电网与可再生能源(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87191703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-02DOI: 10.1109/PESGRE52268.2022.9715799
Sangeeta Kumari, S. N, A. Verma
A novel transformer-less switched-capacitor based multilevel inverter is proposed in this paper. At present, transformer-less inverters (TI) tremendously used due to their compact size, high efficiency and economical. The proposed topology is common-ground-type which leads to zero leakage current by direct electric connection between the grid neutral and negative terminal of dc bus. The proposed inverter has the capability of natural-voltage balancing of switched capacitor, hence no need of dedicated control scheme or sensors to maintain or regulate the voltage. A pulse width modulation scheme is demonstrated in detailed based on logic-gate. The performance of the presented inverter is confirmed through simulation and (a) experimental verification. Furthermore, a detailed comparison against existing topologies which shows the benefits and feasibility of the proposed inverter is presented.
{"title":"Switched-Capacitor Based Five-Level Inverter with Ground Connection","authors":"Sangeeta Kumari, S. N, A. Verma","doi":"10.1109/PESGRE52268.2022.9715799","DOIUrl":"https://doi.org/10.1109/PESGRE52268.2022.9715799","url":null,"abstract":"A novel transformer-less switched-capacitor based multilevel inverter is proposed in this paper. At present, transformer-less inverters (TI) tremendously used due to their compact size, high efficiency and economical. The proposed topology is common-ground-type which leads to zero leakage current by direct electric connection between the grid neutral and negative terminal of dc bus. The proposed inverter has the capability of natural-voltage balancing of switched capacitor, hence no need of dedicated control scheme or sensors to maintain or regulate the voltage. A pulse width modulation scheme is demonstrated in detailed based on logic-gate. The performance of the presented inverter is confirmed through simulation and (a) experimental verification. Furthermore, a detailed comparison against existing topologies which shows the benefits and feasibility of the proposed inverter is presented.","PeriodicalId":64562,"journal":{"name":"智能电网与可再生能源(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76687369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-02DOI: 10.1109/PESGRE52268.2022.9715898
V. Chacko, N. Lakshminarasamma
Small signal model of PWM converters are derived from averaging method. In the case of resonant converters, the averaging method fails because tank currents and voltages have no dc component. Moreover, the phenomenon of “beat frequency dynamics” is not addressed in averaging method. Although numerous modeling techniques are presented in literature to model resonant converter; they are either with complicated math or involves complex numerical computation. The state trajectories of resonant converter exhibits rotating behaviour and are analysed using Fundamental Harmonic Approximation (FHA). This paper proposes a simple and straight-forward modeling technique for Series Resonant Converter (SRC) in synchronous rotating d-q frame. The FHA circuit of SRC is analysed in d-q frame where the alternating state variables becomes dc. The derived equivalent circuit of SRC in d-q frame is able to capture the large signal behaviour of the converter. Subsequent perturbation and linearization of the equivalent circuit model in d-q around an equilibrium point yields us the small signal model of SRC. The proposed small signal model of SRC is able to capture “beat frequency dynamics”. Frequency response characteristics of small signal control to output, input to output, input admittance and output impedance are compared with the switching converter plots and are in close agreements. The proposed small signal circuit of SRC is analytically solved and control to output transfer function is derived.
{"title":"Modeling of Series Resonant Converter in Synchronous Rotating Frame","authors":"V. Chacko, N. Lakshminarasamma","doi":"10.1109/PESGRE52268.2022.9715898","DOIUrl":"https://doi.org/10.1109/PESGRE52268.2022.9715898","url":null,"abstract":"Small signal model of PWM converters are derived from averaging method. In the case of resonant converters, the averaging method fails because tank currents and voltages have no dc component. Moreover, the phenomenon of “beat frequency dynamics” is not addressed in averaging method. Although numerous modeling techniques are presented in literature to model resonant converter; they are either with complicated math or involves complex numerical computation. The state trajectories of resonant converter exhibits rotating behaviour and are analysed using Fundamental Harmonic Approximation (FHA). This paper proposes a simple and straight-forward modeling technique for Series Resonant Converter (SRC) in synchronous rotating d-q frame. The FHA circuit of SRC is analysed in d-q frame where the alternating state variables becomes dc. The derived equivalent circuit of SRC in d-q frame is able to capture the large signal behaviour of the converter. Subsequent perturbation and linearization of the equivalent circuit model in d-q around an equilibrium point yields us the small signal model of SRC. The proposed small signal model of SRC is able to capture “beat frequency dynamics”. Frequency response characteristics of small signal control to output, input to output, input admittance and output impedance are compared with the switching converter plots and are in close agreements. The proposed small signal circuit of SRC is analytically solved and control to output transfer function is derived.","PeriodicalId":64562,"journal":{"name":"智能电网与可再生能源(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76738771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-02DOI: 10.1109/PESGRE52268.2022.9715832
Deepthi L. Sivadas, Vijaymahantesh V Surkod, Amrutha K. Haridas, Arun Chithrabhanu, K. Vasudevan
The performance requirements of Grid-Tied Inverters (GTI) are regularly updated as the penetration of Distributed Generation (DG) increases. In view of improved reliability, the GTIs are required to add on the feature of low or high voltage ride-through (VRT). However, few studies are available to assess the impact of VRT methods on the existing control of the GTI, especially in terms of the implementation of islanding detection (ID). It is observed that the requirements for low VRT and ID are contradictory i.e., for certain low voltage levels, while low VRT assumes fault in the grid and demands continued operation, ID assumes the system to be islanded and tries to trip or initiate transfer to intentional islanded operation. Hence, it is important that the ID method differentiates between events corresponding to fault in the grid that demands VRT and actual islanding. In this paper, a previously proposed method of ID that makes use of the constancy of a voltage to current ratio in response to a pattern of step changes in active power reference, is adapted to operate with low VRT successfully. It is shown that the method can effectively differentiate between a fault condition that demands VRT and an islanding phenomenon. Also, a method for balanced current injection even during unbalanced operation with current limiting action is devised and implemented. The method is validated through MATLAB/Simulink simulation and the results thereof are presented.
{"title":"Adaptive Active Islanding Detection Strategy Enhanced with Fault Ride-Through Capability for Grid-Tied Inverters","authors":"Deepthi L. Sivadas, Vijaymahantesh V Surkod, Amrutha K. Haridas, Arun Chithrabhanu, K. Vasudevan","doi":"10.1109/PESGRE52268.2022.9715832","DOIUrl":"https://doi.org/10.1109/PESGRE52268.2022.9715832","url":null,"abstract":"The performance requirements of Grid-Tied Inverters (GTI) are regularly updated as the penetration of Distributed Generation (DG) increases. In view of improved reliability, the GTIs are required to add on the feature of low or high voltage ride-through (VRT). However, few studies are available to assess the impact of VRT methods on the existing control of the GTI, especially in terms of the implementation of islanding detection (ID). It is observed that the requirements for low VRT and ID are contradictory i.e., for certain low voltage levels, while low VRT assumes fault in the grid and demands continued operation, ID assumes the system to be islanded and tries to trip or initiate transfer to intentional islanded operation. Hence, it is important that the ID method differentiates between events corresponding to fault in the grid that demands VRT and actual islanding. In this paper, a previously proposed method of ID that makes use of the constancy of a voltage to current ratio in response to a pattern of step changes in active power reference, is adapted to operate with low VRT successfully. It is shown that the method can effectively differentiate between a fault condition that demands VRT and an islanding phenomenon. Also, a method for balanced current injection even during unbalanced operation with current limiting action is devised and implemented. The method is validated through MATLAB/Simulink simulation and the results thereof are presented.","PeriodicalId":64562,"journal":{"name":"智能电网与可再生能源(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75635784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-02DOI: 10.1109/PESGRE52268.2022.9715803
Gourahari Nayak, A. Dasgupta
A wide bandwidth current sensorless double loop control of dual active bridge (DAB) converter is presented in this paper. Conventional dual loop control requires measurement of the high switching frequency purely AC inductor current of DAB. High bandwidth current sensors and precise high speed sampling ADCs are necessary, which costs very high. This work proposes a state observer based design for the estimation of this current. After estimation, this observed state variable can be used as state feedback for the inner current loop to generate the phase shift duty ratio as control signal for closed loop operation.
{"title":"Observer Based Current Control of Dual Active Bridge Converter","authors":"Gourahari Nayak, A. Dasgupta","doi":"10.1109/PESGRE52268.2022.9715803","DOIUrl":"https://doi.org/10.1109/PESGRE52268.2022.9715803","url":null,"abstract":"A wide bandwidth current sensorless double loop control of dual active bridge (DAB) converter is presented in this paper. Conventional dual loop control requires measurement of the high switching frequency purely AC inductor current of DAB. High bandwidth current sensors and precise high speed sampling ADCs are necessary, which costs very high. This work proposes a state observer based design for the estimation of this current. After estimation, this observed state variable can be used as state feedback for the inner current loop to generate the phase shift duty ratio as control signal for closed loop operation.","PeriodicalId":64562,"journal":{"name":"智能电网与可再生能源(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74507982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-02DOI: 10.1109/PESGRE52268.2022.9715825
A. Malik, Ahteshamul Haque, K. V. Satya Bharath
With the increased focus on grid connected Photovoltaic (PV) systems, the reliability and stability of grid-connected inverters is a major area of interest. The occurrence of fault in any part of the inverter may severely impact the system leading to adverse effects at the grid end. To improve the system reliability, it is imperative to equip the system with fault tolerant scheme that can handle such failure conditions and prevents the system from shutting down. This paper proposes parallel inverter-based fault tolerant technique for single-phase grid-integrated PV Inverters. It realizes simple fault diagnostic technique for fault identification. After that faulty part is isolated and reconfiguration takes place. The proposed fault tolerant mechanism is validated by performing numerical simulations in MATLAB/Simulink environment. The simulation results verify the potential of the presented technique in dealing with fault conditions.
{"title":"Fault Tolerant Inverter for Grid Connected Photovoltaic System","authors":"A. Malik, Ahteshamul Haque, K. V. Satya Bharath","doi":"10.1109/PESGRE52268.2022.9715825","DOIUrl":"https://doi.org/10.1109/PESGRE52268.2022.9715825","url":null,"abstract":"With the increased focus on grid connected Photovoltaic (PV) systems, the reliability and stability of grid-connected inverters is a major area of interest. The occurrence of fault in any part of the inverter may severely impact the system leading to adverse effects at the grid end. To improve the system reliability, it is imperative to equip the system with fault tolerant scheme that can handle such failure conditions and prevents the system from shutting down. This paper proposes parallel inverter-based fault tolerant technique for single-phase grid-integrated PV Inverters. It realizes simple fault diagnostic technique for fault identification. After that faulty part is isolated and reconfiguration takes place. The proposed fault tolerant mechanism is validated by performing numerical simulations in MATLAB/Simulink environment. The simulation results verify the potential of the presented technique in dealing with fault conditions.","PeriodicalId":64562,"journal":{"name":"智能电网与可再生能源(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72453813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-02DOI: 10.1109/PESGRE52268.2022.9715945
P. K. Gandhi, P. Darji
This paper presents the mathematical modeling of a thyristor-controlled series compensator (TCSC) and gate-controlled series capacitor (GCSC) in a turbine generator system to dampen torsional oscillations due to sub-synchronous resonance (SSR). The parameters of transmission line and turbine generator unit are adapted from IEEE first benchmark model (FBM) for examining stability analysis. The system is found potentially unstable when frequency of SSR mode meets the frequency of torsional modes due to change in fixed compensation of transmission line. Thus, this paper shows the application of TCSC and GCSC to demonstrate the damping of torsional modes in IEEE FBM. The eigenvalue analysis and time-domain results verify the effectiveness of TCSC and GCSC for damping of torsional mode oscillations under unstable conditions. MATLAB/Simulink is used for simulation studies.
{"title":"Performance Evaluation of TCSC and GCSC for Damping of Torsional Oscillations","authors":"P. K. Gandhi, P. Darji","doi":"10.1109/PESGRE52268.2022.9715945","DOIUrl":"https://doi.org/10.1109/PESGRE52268.2022.9715945","url":null,"abstract":"This paper presents the mathematical modeling of a thyristor-controlled series compensator (TCSC) and gate-controlled series capacitor (GCSC) in a turbine generator system to dampen torsional oscillations due to sub-synchronous resonance (SSR). The parameters of transmission line and turbine generator unit are adapted from IEEE first benchmark model (FBM) for examining stability analysis. The system is found potentially unstable when frequency of SSR mode meets the frequency of torsional modes due to change in fixed compensation of transmission line. Thus, this paper shows the application of TCSC and GCSC to demonstrate the damping of torsional modes in IEEE FBM. The eigenvalue analysis and time-domain results verify the effectiveness of TCSC and GCSC for damping of torsional mode oscillations under unstable conditions. MATLAB/Simulink is used for simulation studies.","PeriodicalId":64562,"journal":{"name":"智能电网与可再生能源(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85534674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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