Pub Date : 2015-11-12DOI: 10.1109/EDPE.2015.7325273
Dezhi Chen, B. Bai, B. Kwon
This paper proposes a novel design method for current limiting resistors and DC bus contactor of inverters, in which the limiting current circuit is accurately obtained based on the model of power electronics system. The mathematical model of the rectifier under different bus voltages is established and the relationship between current limiting resistance and power-on time discussed. The dichotomy is utilized to calculate the current limiting resistance of the inverter, and also the losses calculation with considering the maximum start current instantaneous power that the system current limiting resistance can stand. Meanwhile, the calculation method of DC bus contactor considering under-load, over-load and current derating is proposed. The design method of the current limiting resistance and losses is presented. The effectiveness of the proposed method is verified by simulation.
{"title":"A novel design method for current limiting circuit of inverter","authors":"Dezhi Chen, B. Bai, B. Kwon","doi":"10.1109/EDPE.2015.7325273","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325273","url":null,"abstract":"This paper proposes a novel design method for current limiting resistors and DC bus contactor of inverters, in which the limiting current circuit is accurately obtained based on the model of power electronics system. The mathematical model of the rectifier under different bus voltages is established and the relationship between current limiting resistance and power-on time discussed. The dichotomy is utilized to calculate the current limiting resistance of the inverter, and also the losses calculation with considering the maximum start current instantaneous power that the system current limiting resistance can stand. Meanwhile, the calculation method of DC bus contactor considering under-load, over-load and current derating is proposed. The design method of the current limiting resistance and losses is presented. The effectiveness of the proposed method is verified by simulation.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129428004","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 : 2015-11-12DOI: 10.1109/EDPE.2015.7325343
M. Chomat, L. Schreier, J. Bendl
The influence of the voltage supply method and of the way of connecting a five-phase induction machine to a voltage-source inverter on the torque pulsations and on the harmonic distortion of the stator voltages and currents are investigated. Operation in star, pentagon and pentacle connections is considered. The method of symmetrical components of instantaneous quantities is used in the analysis of the machine.
{"title":"Effect of stator winding configurations on operation of converter fed five-phase induction machine","authors":"M. Chomat, L. Schreier, J. Bendl","doi":"10.1109/EDPE.2015.7325343","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325343","url":null,"abstract":"The influence of the voltage supply method and of the way of connecting a five-phase induction machine to a voltage-source inverter on the torque pulsations and on the harmonic distortion of the stator voltages and currents are investigated. Operation in star, pentagon and pentacle connections is considered. The method of symmetrical components of instantaneous quantities is used in the analysis of the machine.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126205044","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 : 2015-11-12DOI: 10.1109/EDPE.2015.7325347
Yuya Kitano, H. Omori, N. Kimura, T. Morizane, K. Nakagawa, M. Nakaoka
This paper deals with a cost effective IPT wireless EV battery charger which incorporates the simplest quasi-resonant soft switching pulse modulated inverter. In the first place, the operating principle of the single-ended high-frequency resonant inverter linked IPT DC-DC converter treated here is described. This two planar coupling coils type wireless resonant DC-DC converter can efficiently operate under a condition of ZVS transitions on the basis of the self-excited pulse processing scheme due to zero voltage detecting method of quasi-resonant capacitor voltage. In the second place, illustrated is a comparative study of wireless power transfer circuits. Power receiving circuit is optimized successfully from a viewpoint of transfer power. Furthermore a low-cost power-factor correction by active filtering is described herein. The waveform of the input current in pilot study of this wireless EV charger has very low harmonic distortion by the PFC control of the inverter and the design of the filter circuit parameters.
{"title":"A new wireless EV charger using single switch ZVS resonant inverter with optimized power transfer and low-cost PFC","authors":"Yuya Kitano, H. Omori, N. Kimura, T. Morizane, K. Nakagawa, M. Nakaoka","doi":"10.1109/EDPE.2015.7325347","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325347","url":null,"abstract":"This paper deals with a cost effective IPT wireless EV battery charger which incorporates the simplest quasi-resonant soft switching pulse modulated inverter. In the first place, the operating principle of the single-ended high-frequency resonant inverter linked IPT DC-DC converter treated here is described. This two planar coupling coils type wireless resonant DC-DC converter can efficiently operate under a condition of ZVS transitions on the basis of the self-excited pulse processing scheme due to zero voltage detecting method of quasi-resonant capacitor voltage. In the second place, illustrated is a comparative study of wireless power transfer circuits. Power receiving circuit is optimized successfully from a viewpoint of transfer power. Furthermore a low-cost power-factor correction by active filtering is described herein. The waveform of the input current in pilot study of this wireless EV charger has very low harmonic distortion by the PFC control of the inverter and the design of the filter circuit parameters.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129309209","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 : 2015-11-12DOI: 10.1109/EDPE.2015.7325330
Martin Šuňal, Jaroslav Ilončiak, Jaroslav Bednar
This paper describes smart converters and presents results from real industrial application. The auxiliary converters in public transport vehicles are very important part of vehicles. The auxiliary converters consist from three-phase, inverters, single-phase inverters, chargers, power supplies of several different voltages. Nowadays converters contain powerful digital signal processors (DSP) with a lot of peripheries. High performance of the DSP predisposes new converters for complex systems. Working principle of converters is often very similar. Based on the similarity of converters were designed and created universal, adjustable control programs for each group of converters. The creation of universal adjustable control programs allowed to design and create smart converters. The smart converters are adjusted automatically. When the smart converters are connected to the auxiliary converters, they are adjusted automatically. The converters accept correct settings without external support (service staff). After that the converters are ready for work. The implementation of the smart converter improves reliability and reparability. Repair time is shorter. Requirements on staff are low.
{"title":"Smart converters implemented into auxiliary converter of public transport vehicles","authors":"Martin Šuňal, Jaroslav Ilončiak, Jaroslav Bednar","doi":"10.1109/EDPE.2015.7325330","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325330","url":null,"abstract":"This paper describes smart converters and presents results from real industrial application. The auxiliary converters in public transport vehicles are very important part of vehicles. The auxiliary converters consist from three-phase, inverters, single-phase inverters, chargers, power supplies of several different voltages. Nowadays converters contain powerful digital signal processors (DSP) with a lot of peripheries. High performance of the DSP predisposes new converters for complex systems. Working principle of converters is often very similar. Based on the similarity of converters were designed and created universal, adjustable control programs for each group of converters. The creation of universal adjustable control programs allowed to design and create smart converters. The smart converters are adjusted automatically. When the smart converters are connected to the auxiliary converters, they are adjusted automatically. The converters accept correct settings without external support (service staff). After that the converters are ready for work. The implementation of the smart converter improves reliability and reparability. Repair time is shorter. Requirements on staff are low.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120846055","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 : 2015-11-12DOI: 10.1109/EDPE.2015.7325270
P. Štefanec, B. Dobrucký
The paper deals with analysis and modelling of a new type of single-phase supplied AC/AC converter with two phase outputs. It consists of single-leg half-bridge matrix converter loaded by resistive-inductive load in series connection. There are two problems solved in the paper: a) creating of second output phase shifted by 90 degrees against original one, and b) providing of frequency control of both orthogonal phase systems able supplying a two-phase electrical machine. As simulation results are given: harmonic analysis of the voltage of both phases; maximal possible reachable current waveform under R-L load with parametric changes of the time constant of the load. The simulation is resulting to recommendation for fair and right design of the converter, and demands to single- or two phase input supply voltage, respectively, under passive R-L or motoric load.
{"title":"One leg MxC analysis and modelling","authors":"P. Štefanec, B. Dobrucký","doi":"10.1109/EDPE.2015.7325270","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325270","url":null,"abstract":"The paper deals with analysis and modelling of a new type of single-phase supplied AC/AC converter with two phase outputs. It consists of single-leg half-bridge matrix converter loaded by resistive-inductive load in series connection. There are two problems solved in the paper: a) creating of second output phase shifted by 90 degrees against original one, and b) providing of frequency control of both orthogonal phase systems able supplying a two-phase electrical machine. As simulation results are given: harmonic analysis of the voltage of both phases; maximal possible reachable current waveform under R-L load with parametric changes of the time constant of the load. The simulation is resulting to recommendation for fair and right design of the converter, and demands to single- or two phase input supply voltage, respectively, under passive R-L or motoric load.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124327251","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 : 2015-11-12DOI: 10.1109/EDPE.2015.7325327
M. Steczek, A. Szeląg
The paper proposes an application of a well-known method of Selective Harmonic Elimination in inverter's output voltage to influence an input traction current spectrum in a DC supplied traction vehicle with asynchronous motors. The aim is to reduce the values of current harmonics in frequency bands that are subject to limitations applicable on Polish railways. This paper introduces the possibility of modifying the method (Selective Harmonics Elimination - SHE) in such a way as to replace elimination of selective harmonics with their reduction (Selective Harmonics Reduction - SHR). Comparative analysis of the effectiveness of both these methods was based on computer simulation results. The important advantage of the SHR method, in comparison with the SHE methods, is the reduction of the required switching angles number with obtaining the aim of the application, i.e. current harmonics amplitudes below the defined limits. Some exemplary results of effectiveness of the proposed method are as well presented and discussed.
{"title":"Modification of the selective harmonic elimination method for effective catenary current harmonics reduction","authors":"M. Steczek, A. Szeląg","doi":"10.1109/EDPE.2015.7325327","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325327","url":null,"abstract":"The paper proposes an application of a well-known method of Selective Harmonic Elimination in inverter's output voltage to influence an input traction current spectrum in a DC supplied traction vehicle with asynchronous motors. The aim is to reduce the values of current harmonics in frequency bands that are subject to limitations applicable on Polish railways. This paper introduces the possibility of modifying the method (Selective Harmonics Elimination - SHE) in such a way as to replace elimination of selective harmonics with their reduction (Selective Harmonics Reduction - SHR). Comparative analysis of the effectiveness of both these methods was based on computer simulation results. The important advantage of the SHR method, in comparison with the SHE methods, is the reduction of the required switching angles number with obtaining the aim of the application, i.e. current harmonics amplitudes below the defined limits. Some exemplary results of effectiveness of the proposed method are as well presented and discussed.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"9 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120904957","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 : 2015-11-12DOI: 10.1109/EDPE.2015.7325323
R. Gunabalan, P. Sanjeevikumar, F. Blaabjerg, P. Wheeler, V. Fedák, A. Ertas
This paper presents the transfer function modeling and stability analysis of two induction motors of same ratings and parameters connected in parallel. The induction motors are controlled by a single inverter and the entire drive system is modeled using transfer function in LabView. Further, the software is used to perform the stability analysis of the parallel connected induction motor drive under unbalanced load conditions. It is very simple compared with the methods discussed so far to study the performance of the drive under unbalanced load conditions. Control design and simulation toolkits are used to model the drive system and to study the stability analysis. Simulation is done for various operating conditions and the stability investigation is performed for different load conditions and difference in stator and rotor resistances among the two motors.
{"title":"Transfer function modeling of parallel connected two three-phase induction motor implementation using LabView platform","authors":"R. Gunabalan, P. Sanjeevikumar, F. Blaabjerg, P. Wheeler, V. Fedák, A. Ertas","doi":"10.1109/EDPE.2015.7325323","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325323","url":null,"abstract":"This paper presents the transfer function modeling and stability analysis of two induction motors of same ratings and parameters connected in parallel. The induction motors are controlled by a single inverter and the entire drive system is modeled using transfer function in LabView. Further, the software is used to perform the stability analysis of the parallel connected induction motor drive under unbalanced load conditions. It is very simple compared with the methods discussed so far to study the performance of the drive under unbalanced load conditions. Control design and simulation toolkits are used to model the drive system and to study the stability analysis. Simulation is done for various operating conditions and the stability investigation is performed for different load conditions and difference in stator and rotor resistances among the two motors.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"14 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124396483","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 : 2015-11-12DOI: 10.1109/EDPE.2015.7325293
M. Greule, M. Doppelbauer
High torque density switched reluctance motors (SRM) have a stator yoke thickness as small as possible. This can lead to strong mutual coupling between the flux paths of the motor phases and thus an isolated modelling of each motor phase of the SRM is imprecise. In this paper a method is suggested which models the resulting motor torque and current dynamics directly from the flux linkages with no need of inductances. That allows an easy calculation from measurement or simulation results. The model is validated by 2D finite element analysis. With a proper method to measure the flux linkage characteristics it is sufficient to calculate half of an electrical period to get all information to model the system behavior, even for both long and short flux path phase connection sequences.
{"title":"Modelling of high torque density switched reluctance motors with mutual coupling","authors":"M. Greule, M. Doppelbauer","doi":"10.1109/EDPE.2015.7325293","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325293","url":null,"abstract":"High torque density switched reluctance motors (SRM) have a stator yoke thickness as small as possible. This can lead to strong mutual coupling between the flux paths of the motor phases and thus an isolated modelling of each motor phase of the SRM is imprecise. In this paper a method is suggested which models the resulting motor torque and current dynamics directly from the flux linkages with no need of inductances. That allows an easy calculation from measurement or simulation results. The model is validated by 2D finite element analysis. With a proper method to measure the flux linkage characteristics it is sufficient to calculate half of an electrical period to get all information to model the system behavior, even for both long and short flux path phase connection sequences.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114868916","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 : 2015-11-12DOI: 10.1109/EDPE.2015.7325275
J. Corcau, L. Dinca, L. Grigorie, Eduard Ureche
In this paper is presented the implementation in MULTISIM and numerical simulation analysis of a DC to DC boost converter with two parallel stages. For the boost converter with two stages in parallel implemented in this paper input voltage is 24 VDC and output voltage 48 VDC at a maximum power of 1.7 kW. The switching frequency was set about 10 kHz. The implementation scheme in Multisim has two stages of identical power, which are connected in parallel. The boost converter with two stages in parallel has been tested under various loads, for a variable duty cycle and for constant duty cycle. Based on numerical simulations there were drawn the characteristics for a boost converter with two stages in parallel. It was noted that the behavior of two stages in parallel boost converter is similar to the single stage mentioning that the second one has an extended domain for the output currents.
{"title":"Multisim implementation and analysis of a DC to DC boost converter with two parallel stages","authors":"J. Corcau, L. Dinca, L. Grigorie, Eduard Ureche","doi":"10.1109/EDPE.2015.7325275","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325275","url":null,"abstract":"In this paper is presented the implementation in MULTISIM and numerical simulation analysis of a DC to DC boost converter with two parallel stages. For the boost converter with two stages in parallel implemented in this paper input voltage is 24 VDC and output voltage 48 VDC at a maximum power of 1.7 kW. The switching frequency was set about 10 kHz. The implementation scheme in Multisim has two stages of identical power, which are connected in parallel. The boost converter with two stages in parallel has been tested under various loads, for a variable duty cycle and for constant duty cycle. Based on numerical simulations there were drawn the characteristics for a boost converter with two stages in parallel. It was noted that the behavior of two stages in parallel boost converter is similar to the single stage mentioning that the second one has an extended domain for the output currents.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122052828","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 : 2015-11-12DOI: 10.1109/EDPE.2015.7325280
J. Toman, Radek Hrbacek, V. Singule
This paper deals with the design and the evaluation of a redundant control algorithm for a Brushless DC Motor. The algorithm is based on both sensor and sensor-less commutation approaches in order to increase the robustness of the system. The reliability is further increased by introducing built-in tests and by monitoring the health of the hardware. The presented results were achieved within the ESPOSA project.
{"title":"Redundant control algorithm for a brushless DC motor","authors":"J. Toman, Radek Hrbacek, V. Singule","doi":"10.1109/EDPE.2015.7325280","DOIUrl":"https://doi.org/10.1109/EDPE.2015.7325280","url":null,"abstract":"This paper deals with the design and the evaluation of a redundant control algorithm for a Brushless DC Motor. The algorithm is based on both sensor and sensor-less commutation approaches in order to increase the robustness of the system. The reliability is further increased by introducing built-in tests and by monitoring the health of the hardware. The presented results were achieved within the ESPOSA project.","PeriodicalId":246203,"journal":{"name":"2015 International Conference on Electrical Drives and Power Electronics (EDPE)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125314479","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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