Pub Date : 2022-02-01DOI: 10.1109/pedstc53976.2022.9767535
A. Mousaei, M. B. Bannae Sharifian, N. Rostami
The Model Predictive Current Controls (MPCs) have fast speed response and low current’s Total Harmonic Distortion (THD) for Linear Induction Motors (LIMs) control. However, this method like other control methods has some disadvantages which one of them is the need to parameters detuning of LIM. On the other hand, parameters of the LIM are changed by changing condition like changing temperature. So, if the motor parameters are not been calculated accurate, the control of speed and THD of the current may become worse. In this paper, an improved MPC is proposed to solve this problem. The proposed Structure is resistant to changes in the parameters of the LIM. The proposed structure uses an ultra-local model instead of mathematical model of the LIM. Also, in the proposed structure, for estimate of disturbance and improve the control of speed, a Linear Extended State Observer (LESO) is used. According to the results, Proposed Structure have less ripple of speed’s path than Field Oriented Control (FOC), Conventional Direct Thrust Force Control (DTFC), DTFC-PI, Deadbeat-based Predictive Current Control (DPCC) and Conventional MPC. Also its ripple of the output speed is less than Conventional DTFC, DTFC-PI, DPCC and Conventional MPC. One of the other advantages of the proposed structure is fast speed of respond. In other word, in the proposed structure, actual speed achieves faster than FOC, Conventional DTFC, DTFC-PI, DPCC and Conventional MPC to the reference speed.
{"title":"An Improved Predictive Current Control Strategy of Linear Induction Motor Based on Ultra-Local Model and Extended State Observer","authors":"A. Mousaei, M. B. Bannae Sharifian, N. Rostami","doi":"10.1109/pedstc53976.2022.9767535","DOIUrl":"https://doi.org/10.1109/pedstc53976.2022.9767535","url":null,"abstract":"The Model Predictive Current Controls (MPCs) have fast speed response and low current’s Total Harmonic Distortion (THD) for Linear Induction Motors (LIMs) control. However, this method like other control methods has some disadvantages which one of them is the need to parameters detuning of LIM. On the other hand, parameters of the LIM are changed by changing condition like changing temperature. So, if the motor parameters are not been calculated accurate, the control of speed and THD of the current may become worse. In this paper, an improved MPC is proposed to solve this problem. The proposed Structure is resistant to changes in the parameters of the LIM. The proposed structure uses an ultra-local model instead of mathematical model of the LIM. Also, in the proposed structure, for estimate of disturbance and improve the control of speed, a Linear Extended State Observer (LESO) is used. According to the results, Proposed Structure have less ripple of speed’s path than Field Oriented Control (FOC), Conventional Direct Thrust Force Control (DTFC), DTFC-PI, Deadbeat-based Predictive Current Control (DPCC) and Conventional MPC. Also its ripple of the output speed is less than Conventional DTFC, DTFC-PI, DPCC and Conventional MPC. One of the other advantages of the proposed structure is fast speed of respond. In other word, in the proposed structure, actual speed achieves faster than FOC, Conventional DTFC, DTFC-PI, DPCC and Conventional MPC to the reference speed.","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121012636","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 : 2022-02-01DOI: 10.1109/pedstc53976.2022.9767232
Baharak Akhlaghi, H. Farzanehfard
This article introduces a family of soft switching (SS) interleaved DC-DC converters. In the proposed topologies, full SS performance is realized with no extra switches and by using a few passive elements. The introduced converters utilize quasi-resonant SS method which absorbs and uses the parasitic components to provide full SS condition. These issues enhance the efficiency and reduce the converter overall size and cost, considerably. In the proposed converters, the switches turn on and off at zero voltage switching and the diodes turn off under zero current switching conditions. This alleviates the MOSFETs switching and capacitive turn-on dissipations and the diodes reverse recovery problem. The operation principles of the boost type of the introduced family are presented completely. Also, the experimental results are presented which validate the theoretical analysis. Also, a comparison between the proposed converter and the recent prominent counterparts is presented.
{"title":"Family of Soft Switching Quasi-Resonant Interleaved Converters","authors":"Baharak Akhlaghi, H. Farzanehfard","doi":"10.1109/pedstc53976.2022.9767232","DOIUrl":"https://doi.org/10.1109/pedstc53976.2022.9767232","url":null,"abstract":"This article introduces a family of soft switching (SS) interleaved DC-DC converters. In the proposed topologies, full SS performance is realized with no extra switches and by using a few passive elements. The introduced converters utilize quasi-resonant SS method which absorbs and uses the parasitic components to provide full SS condition. These issues enhance the efficiency and reduce the converter overall size and cost, considerably. In the proposed converters, the switches turn on and off at zero voltage switching and the diodes turn off under zero current switching conditions. This alleviates the MOSFETs switching and capacitive turn-on dissipations and the diodes reverse recovery problem. The operation principles of the boost type of the introduced family are presented completely. Also, the experimental results are presented which validate the theoretical analysis. Also, a comparison between the proposed converter and the recent prominent counterparts is presented.","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121919396","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 : 2022-02-01DOI: 10.1109/pedstc53976.2022.9767446
Saeed Lotfollahzadegan, S. Davari, Ali Chegeni, C. Garcia, José Raúl Rodríguez Rodríguez
Deadbeat Model Predictive Torque Control is one of the significant control methods of induction motors that in order to remove the modulator in this method, the voltage based cost function is used to opt the closest voltage vector to the reference voltage vector. By combining this control method and using virtual voltage vectors, an effective and efficient method is created. However, with the increasing in the number of voltage vectors (real or virtual), the computation burden and complexity will be increased. Therefore, in this paper, a procedure to select the best triangular section that involves of the reference voltage vector and also reducing the number of candidate voltage vectors for placing in the voltage based cost function is presented. This procedure is based on simultaneous attention to the amplitude and angle of the reference voltage vector. The validity of the proposed methods (using virtual voltage vectors and selecting triangular section) is verified by the SIMULINK/MATLAB.
{"title":"Virtual Voltage Vector-Based Deadbeat Model Predictive Torque Control for Induction Motor Drives with a Solution to Reduce Computation Burden","authors":"Saeed Lotfollahzadegan, S. Davari, Ali Chegeni, C. Garcia, José Raúl Rodríguez Rodríguez","doi":"10.1109/pedstc53976.2022.9767446","DOIUrl":"https://doi.org/10.1109/pedstc53976.2022.9767446","url":null,"abstract":"Deadbeat Model Predictive Torque Control is one of the significant control methods of induction motors that in order to remove the modulator in this method, the voltage based cost function is used to opt the closest voltage vector to the reference voltage vector. By combining this control method and using virtual voltage vectors, an effective and efficient method is created. However, with the increasing in the number of voltage vectors (real or virtual), the computation burden and complexity will be increased. Therefore, in this paper, a procedure to select the best triangular section that involves of the reference voltage vector and also reducing the number of candidate voltage vectors for placing in the voltage based cost function is presented. This procedure is based on simultaneous attention to the amplitude and angle of the reference voltage vector. The validity of the proposed methods (using virtual voltage vectors and selecting triangular section) is verified by the SIMULINK/MATLAB.","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128473438","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 : 2022-02-01DOI: 10.1109/pedstc53976.2022.9767411
M. J. Harandi, Alireza Hosein Pour, Bahram Jahanbakhshi Pordanjani, M. Bina
Increasing wind energy utilization and connecting high-capacity wind farms to the grid has made it necessary to study their impact on grid stability and the requirements needed to increase grid reliability. The most important generator used in wind turbine technology is DFIG. Although this generator has many advantages, such as having converters with low rating devices which leads to lower cost, there are some disadvantages associated with that excessive overcurrent during short-circuit fault due to the direct connection of the stator to the AC grid. This paper proposes a new topology and novel control method to limit the fault current, so that grid requirements are met during transient fault. Also, this novel scheme does not add any complexity and power loss to system during normal operation,
{"title":"Performance Improvement of Low Voltage Ride-Through Using Optimal Structure in DFIG","authors":"M. J. Harandi, Alireza Hosein Pour, Bahram Jahanbakhshi Pordanjani, M. Bina","doi":"10.1109/pedstc53976.2022.9767411","DOIUrl":"https://doi.org/10.1109/pedstc53976.2022.9767411","url":null,"abstract":"Increasing wind energy utilization and connecting high-capacity wind farms to the grid has made it necessary to study their impact on grid stability and the requirements needed to increase grid reliability. The most important generator used in wind turbine technology is DFIG. Although this generator has many advantages, such as having converters with low rating devices which leads to lower cost, there are some disadvantages associated with that excessive overcurrent during short-circuit fault due to the direct connection of the stator to the AC grid. This paper proposes a new topology and novel control method to limit the fault current, so that grid requirements are met during transient fault. Also, this novel scheme does not add any complexity and power loss to system during normal operation,","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129143366","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 : 2022-02-01DOI: 10.1109/pedstc53976.2022.9767266
P. Hamedani, C. Garcia, F. Flores-Bahamonde, S. Sadr, José Raúl Rodríguez Rodríguez
Recently, multilevel inverters have attracted the attention of different electric transportation industries due to the possibility of increasing the dc-link voltage. Flying Capacitor (FC) multilevel inverter is an efficient structure that does not need different dc sources and is therefore suitable for electric vehicle applications. Moreover, Model Predictive Control (MPC) is a well-known control strategy for different electric drive systems like induction machines. However, MPC of electrical machines supplied with a multilevel FC inverter has not been investigated yet.As a result, this paper concentrates on the predictive control of an IM drive with 4-level FC inverters. The application of this control strategy is simple and many objective functions can be simultaneously taken into account in the optimization of the cost function, such as the dynamic tracking behavior and the voltage balancing of the FCs. To compensate the delay time which emerges due to a large number of calculations in each sampling instant, delay compensation method has been utilized. According to the results, the proposed predictive control of the IM drive with a 4-level FC inverter offers fast dynamic behavior with no overshoot, low torque and current ripples, and perfect voltage balancing of the FCs.
{"title":"Predictive Control of 4-level Flying Capacitor Inverter for Electric Car Applications","authors":"P. Hamedani, C. Garcia, F. Flores-Bahamonde, S. Sadr, José Raúl Rodríguez Rodríguez","doi":"10.1109/pedstc53976.2022.9767266","DOIUrl":"https://doi.org/10.1109/pedstc53976.2022.9767266","url":null,"abstract":"Recently, multilevel inverters have attracted the attention of different electric transportation industries due to the possibility of increasing the dc-link voltage. Flying Capacitor (FC) multilevel inverter is an efficient structure that does not need different dc sources and is therefore suitable for electric vehicle applications. Moreover, Model Predictive Control (MPC) is a well-known control strategy for different electric drive systems like induction machines. However, MPC of electrical machines supplied with a multilevel FC inverter has not been investigated yet.As a result, this paper concentrates on the predictive control of an IM drive with 4-level FC inverters. The application of this control strategy is simple and many objective functions can be simultaneously taken into account in the optimization of the cost function, such as the dynamic tracking behavior and the voltage balancing of the FCs. To compensate the delay time which emerges due to a large number of calculations in each sampling instant, delay compensation method has been utilized. According to the results, the proposed predictive control of the IM drive with a 4-level FC inverter offers fast dynamic behavior with no overshoot, low torque and current ripples, and perfect voltage balancing of the FCs.","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130523808","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 : 2022-02-01DOI: 10.1109/pedstc53976.2022.9767274
Pooriya Jamallo, S. Vaez‐Zadeh, Alireza Jabbarnejad
Power grids are weakened by increasing penetration of renewable energy sources. Nevertheless, the conventional control methods of voltage source converters (VSCs), cannot work well under weak grid conditions. Direct power control (DPC) due to the simplicity of its system structure, the elimination of current controllers, and modulation blocks has attracted widespread attention. Some researchers have enhanced the control method by reducing the effects of unbalance under stiff grid conditions. Nevertheless, the weak grid conditions lead to voltage fluctuations at the point of common coupling (PCC) and consequently cause converter instability. This research proposes a sensorless virtual flux DPC of VSCs enjoys a stable performance under the unbalanced weak grid conditions using the proposed active and reactive power references. The proposed control system provides features such as high-power quality and better current THD in comparison with the conventional direct power control method. Also, the voltage sensors have been eliminated. The stability of proposed control system is provided using a small-signal model, where the model is directly extracted from a conventional switching look-up table. The stability analysis shows that it is possible to simultaneously change system parameters. These findings are verified through extensive simulation.
{"title":"Sensorless Virtual-Flux Direct Power Control of Grid Connected Converters under Unbalanced Weak Grid Conditions","authors":"Pooriya Jamallo, S. Vaez‐Zadeh, Alireza Jabbarnejad","doi":"10.1109/pedstc53976.2022.9767274","DOIUrl":"https://doi.org/10.1109/pedstc53976.2022.9767274","url":null,"abstract":"Power grids are weakened by increasing penetration of renewable energy sources. Nevertheless, the conventional control methods of voltage source converters (VSCs), cannot work well under weak grid conditions. Direct power control (DPC) due to the simplicity of its system structure, the elimination of current controllers, and modulation blocks has attracted widespread attention. Some researchers have enhanced the control method by reducing the effects of unbalance under stiff grid conditions. Nevertheless, the weak grid conditions lead to voltage fluctuations at the point of common coupling (PCC) and consequently cause converter instability. This research proposes a sensorless virtual flux DPC of VSCs enjoys a stable performance under the unbalanced weak grid conditions using the proposed active and reactive power references. The proposed control system provides features such as high-power quality and better current THD in comparison with the conventional direct power control method. Also, the voltage sensors have been eliminated. The stability of proposed control system is provided using a small-signal model, where the model is directly extracted from a conventional switching look-up table. The stability analysis shows that it is possible to simultaneously change system parameters. These findings are verified through extensive simulation.","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125625701","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 : 2022-02-01DOI: 10.1109/PEDSTC53976.2022.9767419
M. Abareshi, Abdolsalim Satlekhi, M. Hamzeh, S. Farhangi
In this paper, a non-isolated DC-DC bipolar converter for fast balancing of series-connected Li-ion batteries is introduced. It is an active balancing circuit with the ability to transfer energy from an auxiliary source to the cells. Due to the importance of balancing time, in this method, energy is transferred to two adjacent cells, simultaneously. Since energy is injected into two cells simultaneously, the balancing time is reduced. To control the DC-DC converter, a PI controller is designed. To investigate the converter, its state space model has been acquired and the simulation results have been evaluated. The simulation results show the equalization time is significantly reduced.
{"title":"Fast Active Balancing Circuit for Li-ion Battery Modules using a DC-DC Bipolar Converter","authors":"M. Abareshi, Abdolsalim Satlekhi, M. Hamzeh, S. Farhangi","doi":"10.1109/PEDSTC53976.2022.9767419","DOIUrl":"https://doi.org/10.1109/PEDSTC53976.2022.9767419","url":null,"abstract":"In this paper, a non-isolated DC-DC bipolar converter for fast balancing of series-connected Li-ion batteries is introduced. It is an active balancing circuit with the ability to transfer energy from an auxiliary source to the cells. Due to the importance of balancing time, in this method, energy is transferred to two adjacent cells, simultaneously. Since energy is injected into two cells simultaneously, the balancing time is reduced. To control the DC-DC converter, a PI controller is designed. To investigate the converter, its state space model has been acquired and the simulation results have been evaluated. The simulation results show the equalization time is significantly reduced.","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129980002","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 : 2022-02-01DOI: 10.1109/pedstc53976.2022.9767217
B. Allahverdinejad, S. Modaberi, A. Ajami
In this paper, a non-isolated buck-boost dc–dc converter is presented which benefits from broad range of conversion ratio. The designed topology, contrary to the classic buck-boost converter, has continuous input current. In addition, the introduced converter delivers high step-up voltage gain, making it a good candidate for industrial, electric vehicle and remarkably, renewable energy applications. Operation basis of the introduced converter is discussed thoroughly. The presented converter is compared with similar topologies in respect of several measures, such as the element number, voltage gain, switch voltage stress and continuity or discontinuity of the input current. By taking into account of the merits of the given converter, it is possible to utilize this converter in renewable energy implementations, distinctively in photovoltaic systems.
{"title":"A Non-isolated Buck-Boost DC–DC Converter with Continuous Input Current and Wide Conversion Ratio Range for Photovoltaic Applications","authors":"B. Allahverdinejad, S. Modaberi, A. Ajami","doi":"10.1109/pedstc53976.2022.9767217","DOIUrl":"https://doi.org/10.1109/pedstc53976.2022.9767217","url":null,"abstract":"In this paper, a non-isolated buck-boost dc–dc converter is presented which benefits from broad range of conversion ratio. The designed topology, contrary to the classic buck-boost converter, has continuous input current. In addition, the introduced converter delivers high step-up voltage gain, making it a good candidate for industrial, electric vehicle and remarkably, renewable energy applications. Operation basis of the introduced converter is discussed thoroughly. The presented converter is compared with similar topologies in respect of several measures, such as the element number, voltage gain, switch voltage stress and continuity or discontinuity of the input current. By taking into account of the merits of the given converter, it is possible to utilize this converter in renewable energy implementations, distinctively in photovoltaic systems.","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133916095","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 : 2022-02-01DOI: 10.1109/pedstc53976.2022.9767532
Milad Gavipanjeh Marangalu, Saeed Rahimpour, Naser Vosoughi Kurdkandi, A. Mehrizi‐Sani, Mahdiyyeh Najafzadeh, S. Hosseini
In this study, a single-phase single-stage grid-connected structure without transformer is presented. The proposed structure has the ability to boost the input voltage level without adding an extra dc-dc stage. In addition, being transformer-less makes it cost-efficient and small. Since in positive and negative half cycles there is a route for the capacitor to get charged, the capacitor has less volume compared with traditional topologies. It makes the inverter benefit from more power density. Peak Current Controller (PCC) has been used as the control system of the inverter to support powers (active and reactive) by providing modulation signals for the nine switches. The proposed converter is compared with similar solutions in a comparison table. Simulation results are demonstrated in order to validate the theoretical investigations.
{"title":"A Single-Stage Transformer-less Five-Level Grid-Tied Inverter with Boosting Capability","authors":"Milad Gavipanjeh Marangalu, Saeed Rahimpour, Naser Vosoughi Kurdkandi, A. Mehrizi‐Sani, Mahdiyyeh Najafzadeh, S. Hosseini","doi":"10.1109/pedstc53976.2022.9767532","DOIUrl":"https://doi.org/10.1109/pedstc53976.2022.9767532","url":null,"abstract":"In this study, a single-phase single-stage grid-connected structure without transformer is presented. The proposed structure has the ability to boost the input voltage level without adding an extra dc-dc stage. In addition, being transformer-less makes it cost-efficient and small. Since in positive and negative half cycles there is a route for the capacitor to get charged, the capacitor has less volume compared with traditional topologies. It makes the inverter benefit from more power density. Peak Current Controller (PCC) has been used as the control system of the inverter to support powers (active and reactive) by providing modulation signals for the nine switches. The proposed converter is compared with similar solutions in a comparison table. Simulation results are demonstrated in order to validate the theoretical investigations.","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115224519","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 : 2022-02-01DOI: 10.1109/pedstc53976.2022.9767315
Mahyar Hassanifar, Milad Shamouei-Milan, Y. Neyshabouri
In recent years, T-type nested neutral point clamped (T-NNPC) multilevel inverter has gained attention in motor drive applications. A lot of insulated gate bipolar transistor (IGBT) switches in the converter considerably increase the probability of switch failure. In this paper, a fast and accurate approach is suggested to identify the open-circuit (OC) failure of IGBT switches in a four-level T-NNPC multilevel inverter. Using the suggested approach, the occurrence and exact place of OC fault are determined in less than one cycle. In the presented fault detection algorithm, the output current and voltage are exploited as detection parameters, in which the predicted and desired values of output waveforms are compared to the actual values. Then, the dissimilarity between the observed and expected values is utilized to find the exactly failed IGBT switch. The four-level T-NNPC multilevel inverter is simulated in MATLAB/Simulink environment, and the feasibility of the suggested method is demonstrated for OC fault conditions. In this regard, the effects of OC faults of switches on the capacitor voltages and output waveforms are investigated. The result of applying the suggested method is shown for all the switches separately.
{"title":"T-type Nested Neutral Point Clamped (T-NNPC) Multilevel Inverter: Identification and Diagnosis of IGBT Switch Failures","authors":"Mahyar Hassanifar, Milad Shamouei-Milan, Y. Neyshabouri","doi":"10.1109/pedstc53976.2022.9767315","DOIUrl":"https://doi.org/10.1109/pedstc53976.2022.9767315","url":null,"abstract":"In recent years, T-type nested neutral point clamped (T-NNPC) multilevel inverter has gained attention in motor drive applications. A lot of insulated gate bipolar transistor (IGBT) switches in the converter considerably increase the probability of switch failure. In this paper, a fast and accurate approach is suggested to identify the open-circuit (OC) failure of IGBT switches in a four-level T-NNPC multilevel inverter. Using the suggested approach, the occurrence and exact place of OC fault are determined in less than one cycle. In the presented fault detection algorithm, the output current and voltage are exploited as detection parameters, in which the predicted and desired values of output waveforms are compared to the actual values. Then, the dissimilarity between the observed and expected values is utilized to find the exactly failed IGBT switch. The four-level T-NNPC multilevel inverter is simulated in MATLAB/Simulink environment, and the feasibility of the suggested method is demonstrated for OC fault conditions. In this regard, the effects of OC faults of switches on the capacitor voltages and output waveforms are investigated. The result of applying the suggested method is shown for all the switches separately.","PeriodicalId":213924,"journal":{"name":"2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)","volume":"25 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124318985","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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