{"title":"A DRIVES AND MACHINES TEACHING LABORATORY USING INDUSTRIAL DRIVES","authors":"A. Cross, P. Titmus","doi":"10.1049/icp.2021.0987","DOIUrl":"https://doi.org/10.1049/icp.2021.0987","url":null,"abstract":"","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":"114447872","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 proposes a fault-tolerant control strategy to suppress the second harmonic current and torque ripple in dual threephase PMSMs with inductance asymmetry due to single-phase open circuit. The mathematical model of the dual three-phase PMSM is established based on a proposed vector decoupling method which can be used in both pre-fault and post-fault models. Reference stator currents relationship in fault condition is also analyzed and deduced in this paper. Based on the developed model, PIR controllers are introduced to suppress the second harmonic currents. The experimental results validate the effectiveness of the proposed fault tolerant control strategy in fault condition.
{"title":"A Fault Tolerant Control Strategy for Dual Three-Phase PMSM under Single-Phase Open Circuit Fault Considering Inductance Asymmetry","authors":"Z. Li, L. Wu, J. Liu","doi":"10.1049/icp.2021.1034","DOIUrl":"https://doi.org/10.1049/icp.2021.1034","url":null,"abstract":"This paper proposes a fault-tolerant control strategy to suppress the second harmonic current and torque ripple in dual threephase PMSMs with inductance asymmetry due to single-phase open circuit. The mathematical model of the dual three-phase PMSM is established based on a proposed vector decoupling method which can be used in both pre-fault and post-fault models. Reference stator currents relationship in fault condition is also analyzed and deduced in this paper. Based on the developed model, PIR controllers are introduced to suppress the second harmonic currents. The experimental results validate the effectiveness of the proposed fault tolerant control strategy in fault condition.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"22 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":"114630292","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}
N. Strickland, D. Strickland, B. Goss, A. Cross, D. Thompson, M. Thomson, R. Ferris, M. Watson
To enable the full range of “smart” grid functionality at all levels of the distribution and transmission network it is necessary to have a widespread roll out of measurement of loading. At present, traditional devices are too expensive to install across all 11kV/400V substations. This paper details an approach using the sensors in a typical android mobile phone to detect and measure load current at a cost significantly lower than traditional measurements. The paper covers the theory behind how such an implementation could be undertaken and presents results based on testing in a substation on single phase and three phase cable. The data is manipulated on the phone and then uploaded to a server. Results are encouraging but significant follow on work is needed.
{"title":"MEASUREMENT OF SUBSTATION LOAD CURRENT USING AN ANDROID PHONE","authors":"N. Strickland, D. Strickland, B. Goss, A. Cross, D. Thompson, M. Thomson, R. Ferris, M. Watson","doi":"10.1049/icp.2021.0958","DOIUrl":"https://doi.org/10.1049/icp.2021.0958","url":null,"abstract":"To enable the full range of “smart” grid functionality at all levels of the distribution and transmission network it is necessary to have a widespread roll out of measurement of loading. At present, traditional devices are too expensive to install across all 11kV/400V substations. This paper details an approach using the sensors in a typical android mobile phone to detect and measure load current at a cost significantly lower than traditional measurements. The paper covers the theory behind how such an implementation could be undertaken and presents results based on testing in a substation on single phase and three phase cable. The data is manipulated on the phone and then uploaded to a server. Results are encouraging but significant follow on work is needed.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"40 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":"133040633","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}
A. Routray, A. Singh, Kharan Shiluveru, P. Kumar, R. Singh, R. Mahanty
{"title":"REDUCED VOLTAGE STRESS EXTENDABLE SEVENTEEN-LEVEL MULTILEVEL INVERTER USING SINGLE VOLTAGE SOURCE","authors":"A. Routray, A. Singh, Kharan Shiluveru, P. Kumar, R. Singh, R. Mahanty","doi":"10.1049/icp.2021.1110","DOIUrl":"https://doi.org/10.1049/icp.2021.1110","url":null,"abstract":"","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"68 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":"116237639","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}
F. González-Hernando, J. San-Sebastian, M. Arias, A. Rujas, L. Mir
{"title":"Active Thermal Control for Lifetime Extension of Traction Converter","authors":"F. González-Hernando, J. San-Sebastian, M. Arias, A. Rujas, L. Mir","doi":"10.1049/icp.2021.0950","DOIUrl":"https://doi.org/10.1049/icp.2021.0950","url":null,"abstract":"","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"88 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":"125721772","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}
In this study, we developed and investigated a new non-oriented electrical steel (50H-CP) to be used in mainly induction motors. This material exhibits high flux density and low iron loss. We confirmed the effect of the new material by manufacturing a test motor and comparing its performance against another motor with a standard material (50H350). The efficiency of the motor with 50H-CP showed an improvement of 1% compared to the one with 50H350 because of the low copper losses in the former. Furthermore, the breakdown of the motor losses was evaluated using electromagnetic field analysis. The iron loss was comparable between 50H-CP and 50H350. However, 50H-CP was superior with regard to primary and secondary copper losses. From the above results, the effect of the high magnetic flux density-low iron loss characteristics of 50H-CP was theoretically confirmed.
{"title":"EFFECT OF A NEW NON-ORIENTED ELECTRICAL STEEL SHEET WITH HIGH MAGNETIC FLUX DENSITY AND LOW IRON LOSS ON INDUCTION MOTOR PERFORMANCE","authors":"Masahito Kamikawabata, Takeru Ichie, Fuminobu Murakami, Shinichi Matsui, Yasuo Ohsugi","doi":"10.1049/icp.2021.1021","DOIUrl":"https://doi.org/10.1049/icp.2021.1021","url":null,"abstract":"In this study, we developed and investigated a new non-oriented electrical steel (50H-CP) to be used in mainly induction motors. This material exhibits high flux density and low iron loss. We confirmed the effect of the new material by manufacturing a test motor and comparing its performance against another motor with a standard material (50H350). The efficiency of the motor with 50H-CP showed an improvement of 1% compared to the one with 50H350 because of the low copper losses in the former. Furthermore, the breakdown of the motor losses was evaluated using electromagnetic field analysis. The iron loss was comparable between 50H-CP and 50H350. However, 50H-CP was superior with regard to primary and secondary copper losses. From the above results, the effect of the high magnetic flux density-low iron loss characteristics of 50H-CP was theoretically confirmed.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"165 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":"123511828","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}
When carrying an alternating current, the windings in an electrical machine experience increased losses, due to proximity and skin effects. Quantifying these is necessary to fully understand the impact of motor efficiency, requiring the use of finite element analysis of the winding. For an axial flux machine with a three-dimensional flux path, this usually requires the use of threedimensional finite element analysis (FEA). This work presents a method of using simplified 2D FEA as an alternative to full 3D FEA, a dimensionless analysis argument to account for changing winding conductivities and a frequency-scaling is verified with FEA. The time required to characterise a windings AC losses is reduced by a factor of three orders of magnitude.
{"title":"AC Copper Losses in Edge-Wound Coils in a YASA Motor","authors":"R. Phillips, Dr T. Woolmer","doi":"10.1049/icp.2021.1018","DOIUrl":"https://doi.org/10.1049/icp.2021.1018","url":null,"abstract":"When carrying an alternating current, the windings in an electrical machine experience increased losses, due to proximity and skin effects. Quantifying these is necessary to fully understand the impact of motor efficiency, requiring the use of finite element analysis of the winding. For an axial flux machine with a three-dimensional flux path, this usually requires the use of threedimensional finite element analysis (FEA). This work presents a method of using simplified 2D FEA as an alternative to full 3D FEA, a dimensionless analysis argument to account for changing winding conductivities and a frequency-scaling is verified with FEA. The time required to characterise a windings AC losses is reduced by a factor of three orders of magnitude.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"20 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":"123867248","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}
Z. Wen, G. Valente, A. Formentini, L. Papini, P. Zanchetta, C. Gerada
{"title":"Mechanical Vibration Suppression on Multi-Sector PMSM with Optimal Active Vibration Control","authors":"Z. Wen, G. Valente, A. Formentini, L. Papini, P. Zanchetta, C. Gerada","doi":"10.1049/icp.2021.1123","DOIUrl":"https://doi.org/10.1049/icp.2021.1123","url":null,"abstract":"","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"22 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":"125192612","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}
In this paper, a ripple improved DC-DC boost converter is proposed by using a dual-winding directly coupled coupled-inductor operating in continuous conduction mode (CCM). The proposed converter achieves larger step-up conversion ratio than the conventional boost converter by using a diode-capacitor cell. The cell consists of two crossly connected identical capacitors and two diodes placed in parallel. An inductor is required to be placed in the output-end to oppose the sudden change in load current due to series-parallel configuration of the identical capacitors of the cell. Thus, the converter requires two inductors to achieve the voltage gain. These two inductors are replaced by a dual-winding directly coupled coupled-inductor. This modification in the circuit improves the ripple in input and inductor currents and, ripple in output voltage without affecting the conversion ratio. Apart from that, the reduction of size of magnetic core also reduces the cost and bulkiness of the proposed converter.
{"title":"Ripple Improvement and Steady State Analysis of a Boost Converter with Higher Step-up Ratio","authors":"M. Biswas, S. Majhi, H. Nemade","doi":"10.1049/icp.2021.0976","DOIUrl":"https://doi.org/10.1049/icp.2021.0976","url":null,"abstract":"In this paper, a ripple improved DC-DC boost converter is proposed by using a dual-winding directly coupled coupled-inductor operating in continuous conduction mode (CCM). The proposed converter achieves larger step-up conversion ratio than the conventional boost converter by using a diode-capacitor cell. The cell consists of two crossly connected identical capacitors and two diodes placed in parallel. An inductor is required to be placed in the output-end to oppose the sudden change in load current due to series-parallel configuration of the identical capacitors of the cell. Thus, the converter requires two inductors to achieve the voltage gain. These two inductors are replaced by a dual-winding directly coupled coupled-inductor. This modification in the circuit improves the ripple in input and inductor currents and, ripple in output voltage without affecting the conversion ratio. Apart from that, the reduction of size of magnetic core also reduces the cost and bulkiness of the proposed converter.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"129 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":"130273034","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}
O. Oghorada, H. Huang, L. Zhang, J. O. Uwagboe, M. Olarewaju, I. Omeiza, R. Diarah
This paper presents a control scheme for the hybrid MMCC using the 5-level flying capacitor converter as sub-module under grid unbalanced voltage condition. The hybrid MMCC is compared with the single star-connected MMCC under voltage sag condition to determine its superiority, in addition to its lower dc capacitor and power semiconductor switch count. The simulation results are provided to validate the hybrid MMCC control scheme and its comparison with the star connected MMCC.
{"title":"THE USE OF HYBRID MODULAR MULTILEVEL CASCADED CONVERTER FOR UNBALANCED VOLTAGE CONDITION","authors":"O. Oghorada, H. Huang, L. Zhang, J. O. Uwagboe, M. Olarewaju, I. Omeiza, R. Diarah","doi":"10.1049/icp.2021.1185","DOIUrl":"https://doi.org/10.1049/icp.2021.1185","url":null,"abstract":"This paper presents a control scheme for the hybrid MMCC using the 5-level flying capacitor converter as sub-module under grid unbalanced voltage condition. The hybrid MMCC is compared with the single star-connected MMCC under voltage sag condition to determine its superiority, in addition to its lower dc capacitor and power semiconductor switch count. The simulation results are provided to validate the hybrid MMCC control scheme and its comparison with the star connected MMCC.","PeriodicalId":188371,"journal":{"name":"The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)","volume":"23 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":"127784406","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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