In order to suppress the influence of power fluctuation i n DC micro grid system, virtual DC motor ( control is applied to DC converter for improv in g the stability of the system. However, t he traditional virtual DC motor control with fixed parameters cannot take the dynamic response of the system into account. This paper analyzes the principle of virtual DC motor control and builds a small signal mode l . After that, the influence of virtual torque and damping coefficient on the dynamic response of DC bus voltage under power fluctuation is analyzed. On this basis, the virtual DC motor control strategy based on adaptive parameter is proposed, and the adap tive adjustment scheme of virtual torque and damping coefficient is designed. Finally, the feasibility and superiority of the proposed strategy are verified by c omparative simulation under different operating conditions.
{"title":"A novel VDM control of energy storage converter based on adaptive parameters","authors":"P. Wang, J. Zhao, K. Liu","doi":"10.1049/icp.2021.1199","DOIUrl":"https://doi.org/10.1049/icp.2021.1199","url":null,"abstract":"In order to suppress the influence of power fluctuation i n DC micro grid system, virtual DC motor ( control is applied to DC converter for improv in g the stability of the system. However, t he traditional virtual DC motor control with fixed parameters cannot take the dynamic response of the system into account. This paper analyzes the principle of virtual DC motor control and builds a small signal mode l . After that, the influence of virtual torque and damping coefficient on the dynamic response of DC bus voltage under power fluctuation is analyzed. On this basis, the virtual DC motor control strategy based on adaptive parameter is proposed, and the adap tive adjustment scheme of virtual torque and damping coefficient is designed. Finally, the feasibility and superiority of the proposed strategy are verified by c omparative simulation under different operating conditions.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128057795","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}
Based on a hybrid-excited switched-flux machine having partitioned-stator (PS-HESFM), the on-load excitation winding voltage pulsating is analyzed and minimized in this paper. Different from the voltage pulsating under no-load, the effect of armature reaction on excitation winding voltage pulsating is taken into consideration in this paper. Two suppression methods, i.e., iron piece rotor inner and outer pole arcs pairing and uneven tooth distribution adopted and comparatively analyzed to suppress the on-load excitation winding voltage pulsating using the finite element (FE) method. It reveals that, by employing iron piece rotor inner and outer pole arcs pairing and uneven tooth distribution, the peak-to-peak excitation winding voltage pulsating at on-load is significantly reduced by 92.8% and 90.6%, respectively, albeit with the slight reduction of average on-load torque by 7.3% and 6.6%.
{"title":"ANALYSIS AND SUPPRESSION OF ON-LOAD EXCITATION WINDING VOLTAGE PULSATING IN PARTITIONED-STATOR HYBRID-EXCITED SWITCHED-FLUX MACHINE","authors":"X. Y. Sun, Z. Zhu","doi":"10.1049/icp.2021.0985","DOIUrl":"https://doi.org/10.1049/icp.2021.0985","url":null,"abstract":"Based on a hybrid-excited switched-flux machine having partitioned-stator (PS-HESFM), the on-load excitation winding voltage pulsating is analyzed and minimized in this paper. Different from the voltage pulsating under no-load, the effect of armature reaction on excitation winding voltage pulsating is taken into consideration in this paper. Two suppression methods, i.e., iron piece rotor inner and outer pole arcs pairing and uneven tooth distribution adopted and comparatively analyzed to suppress the on-load excitation winding voltage pulsating using the finite element (FE) method. It reveals that, by employing iron piece rotor inner and outer pole arcs pairing and uneven tooth distribution, the peak-to-peak excitation winding voltage pulsating at on-load is significantly reduced by 92.8% and 90.6%, respectively, albeit with the slight reduction of average on-load torque by 7.3% and 6.6%.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131198295","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}
B. Kohlhepp, D. Kübrich, M. Tannhäuser, T. Dürbaum
GaN-HEMTs offer new possibilities for the development of advanced power electronics. Due to lower parasitics, GaN devices enable higher switching frequencies and thus higher power densities. However, in comparison to silicon MOSFETs the higher voltage drop during reverse conduction causes more losses during dead time. Therefore, it is essential to adjust the dead time to the actual operation point. This paper proposes a novel method to determine the optimal dead times of the transitions within the half-bridges of an inverter with LC output filter. The dead time is adapted in every switching cycle using variables, which are typically present in the control unit of the inverter. This allows an efficient implementation of the method on microprocessors. The study reveals, based on a 48 V GaN inverter, that the optimal dead time varies in a large range and thus indicates the necessity of an adaptive dead time.
gan - hemt为先进电力电子的发展提供了新的可能性。由于较低的寄生，GaN器件可以实现更高的开关频率，从而实现更高的功率密度。然而，与硅mosfet相比，在反向传导过程中较高的压降会在死区时间内造成更多的损失。因此，必须将死区时间调整到实际操作点。本文提出了一种确定带LC输出滤波器的逆变器半桥内过渡最佳死区时间的新方法。死区时间在每个开关周期中使用变量进行调整，这些变量通常存在于逆变器的控制单元中。这允许在微处理器上有效地实现该方法。研究表明，基于48v GaN逆变器的最佳死区时间变化范围很大，因此表明了自适应死区时间的必要性。
{"title":"Adaptive dead time in high frequency GaN-Inverters with LC output filter","authors":"B. Kohlhepp, D. Kübrich, M. Tannhäuser, T. Dürbaum","doi":"10.1049/icp.2021.0977","DOIUrl":"https://doi.org/10.1049/icp.2021.0977","url":null,"abstract":"GaN-HEMTs offer new possibilities for the development of advanced power electronics. Due to lower parasitics, GaN devices enable higher switching frequencies and thus higher power densities. However, in comparison to silicon MOSFETs the higher voltage drop during reverse conduction causes more losses during dead time. Therefore, it is essential to adjust the dead time to the actual operation point. This paper proposes a novel method to determine the optimal dead times of the transitions within the half-bridges of an inverter with LC output filter. The dead time is adapted in every switching cycle using variables, which are typically present in the control unit of the inverter. This allows an efficient implementation of the method on microprocessors. The study reveals, based on a 48 V GaN inverter, that the optimal dead time varies in a large range and thus indicates the necessity of an adaptive dead time.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133254876","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}
S. Decker, C. Rollbühler, F. Rehm, M. Brodatzki, A. Oerder, A. Liske, J. Kolb, M. Braun
This paper presents an extended dq0-model for small delta connected permanent magnet synchronous machines and a suiteable parametrization approach for testbench measurements. The familiar dq-fundamental equations are thereby extended to consider harmonic effects. This allows the inclusion of the zero-sequence flux-linkage. The extended dq0-model is based on the position dependent dq0-flux-linkages and the ohmic resistance and enables the calculation of the zero-sequence current as well as a more precise inner torque representation. The parametrization of this model can be either achieved by software calculations or testbench measurements. The rotor position dependent dq-flux-linkage calculation is based on the dq-voltages and the solution of the resulting simplified differential equations at constant currents. Detection of the zero-sequence current yields the zero-flux-linkage. In this paper, Finite Element Analysis data for a device under test is used to derive and show the parametrization approaches.
{"title":"DQ0-MODELLING AND PARAMETRIZATION APPROACHES FOR SMALL DELTA CONNECTED PERMANENT MAGNET SYNCHRONOUS MACHINES","authors":"S. Decker, C. Rollbühler, F. Rehm, M. Brodatzki, A. Oerder, A. Liske, J. Kolb, M. Braun","doi":"10.1049/icp.2021.1082","DOIUrl":"https://doi.org/10.1049/icp.2021.1082","url":null,"abstract":"This paper presents an extended dq0-model for small delta connected permanent magnet synchronous machines and a suiteable parametrization approach for testbench measurements. The familiar dq-fundamental equations are thereby extended to consider harmonic effects. This allows the inclusion of the zero-sequence flux-linkage. The extended dq0-model is based on the position dependent dq0-flux-linkages and the ohmic resistance and enables the calculation of the zero-sequence current as well as a more precise inner torque representation. The parametrization of this model can be either achieved by software calculations or testbench measurements. The rotor position dependent dq-flux-linkage calculation is based on the dq-voltages and the solution of the resulting simplified differential equations at constant currents. Detection of the zero-sequence current yields the zero-flux-linkage. In this paper, Finite Element Analysis data for a device under test is used to derive and show the parametrization approaches.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124825314","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}
Mismatch effects are common in photovoltaic (PV) systems, which affect the overall system performance and the PV module life. A mismatch causes an imbalance in the PV module voltages, and therefore, it is not recommended to connect PV modules in parallel due to increased power losses and stresses. To mitigate the effect of mismatch, module-level power electronics converters are considered as an effective solution. Accordingly, this paper introduces a differential power processing (DPP) converter based on switched-capacitors (SCs) for parallel-connected PV strings. The proposed DPP converters are connected across each PV module, which equalizes the PV module voltages. The technique can help to generate more output power regardless of mismatch between PV modules and make the parallelization of PV strings possible. The proposed architecture is analyzed through simulations and compared with parallel-connected PV strings using Schottky diodes.
{"title":"Architecture for Parallel PV Strings using the Switched-Capacitor-Based Differential Power Processing Techniqu","authors":"K. Niazi, Y. Yang, D. Sera","doi":"10.1049/icp.2021.0989","DOIUrl":"https://doi.org/10.1049/icp.2021.0989","url":null,"abstract":"Mismatch effects are common in photovoltaic (PV) systems, which affect the overall system performance and the PV module life. A mismatch causes an imbalance in the PV module voltages, and therefore, it is not recommended to connect PV modules in parallel due to increased power losses and stresses. To mitigate the effect of mismatch, module-level power electronics converters are considered as an effective solution. Accordingly, this paper introduces a differential power processing (DPP) converter based on switched-capacitors (SCs) for parallel-connected PV strings. The proposed DPP converters are connected across each PV module, which equalizes the PV module voltages. The technique can help to generate more output power regardless of mismatch between PV modules and make the parallelization of PV strings possible. The proposed architecture is analyzed through simulations and compared with parallel-connected PV strings using Schottky diodes.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"2020 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128676344","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}
D. Jukić, T. Varga, T. Benšić, V. J. Štil, M. Barukčić
This paper deals with Permanent Magnet Synchronous Motor modeling and control. The derived nonlinear dq model is a combination of Finite Element Method simulation data with the classical dq model. The so derived model keeps the precision of the Finite Element Method simulations and also the fast execution times of the dq model. The Finite Element Method data is included in the dq model using Artificial Neural Networks. The derived model is also used for controller design. The chosen controller is a PI like Fuzzy Logic Controller, which is tuned using Genetic Algorithm optimization. The Permanent Magnet Synchronous Motor with Fuzzy Logic Controller operation is tested using Real-Time (Model-in-the-Loop) simulations.
{"title":"MODELING AND FUZZY CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTORS","authors":"D. Jukić, T. Varga, T. Benšić, V. J. Štil, M. Barukčić","doi":"10.1049/icp.2021.1097","DOIUrl":"https://doi.org/10.1049/icp.2021.1097","url":null,"abstract":"This paper deals with Permanent Magnet Synchronous Motor modeling and control. The derived nonlinear dq model is a combination of Finite Element Method simulation data with the classical dq model. The so derived model keeps the precision of the Finite Element Method simulations and also the fast execution times of the dq model. The Finite Element Method data is included in the dq model using Artificial Neural Networks. The derived model is also used for controller design. The chosen controller is a PI like Fuzzy Logic Controller, which is tuned using Genetic Algorithm optimization. The Permanent Magnet Synchronous Motor with Fuzzy Logic Controller operation is tested using Real-Time (Model-in-the-Loop) simulations.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"39 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132334514","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}
Actuators are used to drive the contact movements to complete switching actions of high voltage circuit breakers(HVCB). Motor drive actuator is considered better than conventional actuators due to its simple structure, high detectability, controllability and intelligence. This paper takes Permanent magnet synchronous motor(PMSM) drive 126kV vacuum circuit breaker(VCB) as research object. The kinematic and dynamic analysis of the device are carried out, and the mathematical model is established on Matlab/Simulink platform. Then based on the intended working performance of the vacuum circuit breaker, the requirements of PMSM's technical parameters are calculated, including torque demand, rotor speed and shaft load characteristics. Finally, the prototype of PMSM drive vacuum circuit breaker is developed. The reliance of the mathematical model and the calculation results are verified through the prototype tests performed.
{"title":"Research on Technology of 126kV Motor Drive Vacuum Circuit Breaker","authors":"Y. Deng, N. Fan, H. Yang, Y. Huang","doi":"10.1049/icp.2021.0998","DOIUrl":"https://doi.org/10.1049/icp.2021.0998","url":null,"abstract":"Actuators are used to drive the contact movements to complete switching actions of high voltage circuit breakers(HVCB). Motor drive actuator is considered better than conventional actuators due to its simple structure, high detectability, controllability and intelligence. This paper takes Permanent magnet synchronous motor(PMSM) drive 126kV vacuum circuit breaker(VCB) as research object. The kinematic and dynamic analysis of the device are carried out, and the mathematical model is established on Matlab/Simulink platform. Then based on the intended working performance of the vacuum circuit breaker, the requirements of PMSM's technical parameters are calculated, including torque demand, rotor speed and shaft load characteristics. Finally, the prototype of PMSM drive vacuum circuit breaker is developed. The reliance of the mathematical model and the calculation results are verified through the prototype tests performed.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130834513","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}
SiC cascode devices combine the gate input characteristics of a low voltage silicon MOSFET with the high voltage performance of a SiC JFET. Hence, SiC cascode JFETs avoid the challenges of reduced gate oxide reliability in SiC MOSFETs. SiC cascode JFETs show superior switching performance compared to SiC planar and trench MOSFETs in the same voltage rating. Avalanche ruggedness under unclamped inductive switching is an important robustness metric since it measures how well the power device can sustain power shocks from anomalous operation. In this paper, the avalanche ruggedness of SiC cascode JFETs is presented. Due to the recent commercial availability of SiC cascode JFETs, the avalanche ruggedness of these devices has not been analysed in comparison with contemporary SiC MOSFETs. Some interesting characteristics regarding the maximum energy the device can dissipate without electrothermal failure at higher temperatures are presented. In standard MOSFETs, the probability of latching the parasitic BJT during avalanche mode conduction increases with temperature, hence, avalanche ruggedness reduces at higher junction temperatures. However, in the cascode JFET, the measurements of avalanche ruggedness at high temperatures show some non-linearity due to interactions between the low voltage MOSFET and the SiC JFET. The embedded gate resistance of the SiC JFET plays a crucial role during avalanche mode conduction. Finite element simulations show that the interaction between the JFET and the low voltage MOSFET plays a critical role in UIS operation and is responsible for this observation.
{"title":"Characterisation of Unclamped Inductive Switching in SiC Cascode JFETs","authors":"N. Agbo, J. Ortiz-Gonzalez, R. Wu, O. Alatise","doi":"10.1049/icp.2021.1114","DOIUrl":"https://doi.org/10.1049/icp.2021.1114","url":null,"abstract":"SiC cascode devices combine the gate input characteristics of a low voltage silicon MOSFET with the high voltage performance of a SiC JFET. Hence, SiC cascode JFETs avoid the challenges of reduced gate oxide reliability in SiC MOSFETs. SiC cascode JFETs show superior switching performance compared to SiC planar and trench MOSFETs in the same voltage rating. Avalanche ruggedness under unclamped inductive switching is an important robustness metric since it measures how well the power device can sustain power shocks from anomalous operation. In this paper, the avalanche ruggedness of SiC cascode JFETs is presented. Due to the recent commercial availability of SiC cascode JFETs, the avalanche ruggedness of these devices has not been analysed in comparison with contemporary SiC MOSFETs. Some interesting characteristics regarding the maximum energy the device can dissipate without electrothermal failure at higher temperatures are presented. In standard MOSFETs, the probability of latching the parasitic BJT during avalanche mode conduction increases with temperature, hence, avalanche ruggedness reduces at higher junction temperatures. However, in the cascode JFET, the measurements of avalanche ruggedness at high temperatures show some non-linearity due to interactions between the low voltage MOSFET and the SiC JFET. The embedded gate resistance of the SiC JFET plays a crucial role during avalanche mode conduction. Finite element simulations show that the interaction between the JFET and the low voltage MOSFET plays a critical role in UIS operation and is responsible for this observation.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"2020 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130990338","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}
This paper presents the design of a calorimeter for measuring losses in power electronics and electrical machines, including devices under test (DUTs) with active liquid cooling. The current calorimeter has a double jacketed structure with aluminium plates to minimise the heat leakage to the exterior through the walls. Heat leakage paths such as power cables and shaft hole were simulated in ANSYS to estimate the power loss, but these values will be validated and compensated during calibration of the unit. The measurement range is 5 kW, with a resolution of 80 mW at 120 W and 3 W at 5 kW. The heat leakage due to the shaft hole and power cables was estimated in ANSYS to be 1.4 W and 1.7 W respectively in the worst case.
{"title":"Design of a calorimeter for modern power electronics and electrical machines","authors":"D. Llano, X. Wang, J. Wang, R. McMahon","doi":"10.1049/icp.2021.1197","DOIUrl":"https://doi.org/10.1049/icp.2021.1197","url":null,"abstract":"This paper presents the design of a calorimeter for measuring losses in power electronics and electrical machines, including devices under test (DUTs) with active liquid cooling. The current calorimeter has a double jacketed structure with aluminium plates to minimise the heat leakage to the exterior through the walls. Heat leakage paths such as power cables and shaft hole were simulated in ANSYS to estimate the power loss, but these values will be validated and compensated during calibration of the unit. The measurement range is 5 kW, with a resolution of 80 mW at 120 W and 3 W at 5 kW. The heat leakage due to the shaft hole and power cables was estimated in ANSYS to be 1.4 W and 1.7 W respectively in the worst case.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126384554","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}
This paper analyses the performance of a proposed minimum phase bipolar converter for solar photovoltaic applications. The proposed bipolar converter is designed by combining the Cuk and SEPIC converters after some circuit modification in both converters. These circuit modifications eliminate right half plane zeros of both Cuk and SEPIC converters which are inherently present in these converters. These modified converters are connected in such a way that bipolar output can be controlled by a single switch.The transient undershoots and overshoots eliminated from the proposed bipolar converter which occurs at the instant of change in duty ratio due to non-minimum phase behavior. So, the improved dynamic performance is good for the maximum power point tracking operation. The minimum phase bipolar converter also has the continuous transfer of input power to the output load, which reduced current and voltage ripples. So, this proposed bipolar converter ensures the stable operation of the PV system and also increases the lifetime of PV panels. Due to buck and boost nature, the proposed bipolar converter extracts maximum power from the PV sources in wide range. A laboratory prototype is developed and tested for 600 W. The MPPT algorithm is implemented using the Texas instrument TMS320F28335 processor.
{"title":"Performance Analyses of a Proposed Minimum Phase Bipolar Converter for Solar Photovoltaic Applications","authors":"P. Kumar, R. Singh, R. Mahanty","doi":"10.1049/icp.2021.1101","DOIUrl":"https://doi.org/10.1049/icp.2021.1101","url":null,"abstract":"This paper analyses the performance of a proposed minimum phase bipolar converter for solar photovoltaic applications. The proposed bipolar converter is designed by combining the Cuk and SEPIC converters after some circuit modification in both converters. These circuit modifications eliminate right half plane zeros of both Cuk and SEPIC converters which are inherently present in these converters. These modified converters are connected in such a way that bipolar output can be controlled by a single switch.The transient undershoots and overshoots eliminated from the proposed bipolar converter which occurs at the instant of change in duty ratio due to non-minimum phase behavior. So, the improved dynamic performance is good for the maximum power point tracking operation. The minimum phase bipolar converter also has the continuous transfer of input power to the output load, which reduced current and voltage ripples. So, this proposed bipolar converter ensures the stable operation of the PV system and also increases the lifetime of PV panels. Due to buck and boost nature, the proposed bipolar converter extracts maximum power from the PV sources in wide range. A laboratory prototype is developed and tested for 600 W. The MPPT algorithm is implemented using the Texas instrument TMS320F28335 processor.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121288531","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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