Pub Date : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6872003
J. Kotny, T. Duquesne, N. Idir
This paper focuses on the design of EMI filter for a power converter used Silicon Carbide power devices (SiC-JFET and SiC diode). The DC-DC converter used in this study is a buck converter which has operating frequency of 100 kHz and the turn-on and turn-off times of the JFET are equal to ten nanoseconds. It is well known that the switching times have a direct link to the spectrum of the EMI sources. Thus, in order to reduce the conducted emissions induced by the SiC-converter, it's necessary to add an EMI filter in order to compliance the EMC standard. In this study, a design method of the EMI filter based on the simulation approach is proposed. For this, a high frequency model based on the electrical equivalent circuit of the filter which takes into account of all impedances of the system is proposed. However, values of the different elements of this model are determined by a new approach. The improvement provided by this model is important in high frequencies (above 1 MHz) taking into account the measured impedances of different propagation paths of the common mode currents of the system. The conducted emissions measured without and with the obtained EMI filter show the effectiveness of the proposed design method.
{"title":"Modeling and design of the EMI filter for DC-DC SiC-converter","authors":"J. Kotny, T. Duquesne, N. Idir","doi":"10.1109/SPEEDAM.2014.6872003","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6872003","url":null,"abstract":"This paper focuses on the design of EMI filter for a power converter used Silicon Carbide power devices (SiC-JFET and SiC diode). The DC-DC converter used in this study is a buck converter which has operating frequency of 100 kHz and the turn-on and turn-off times of the JFET are equal to ten nanoseconds. It is well known that the switching times have a direct link to the spectrum of the EMI sources. Thus, in order to reduce the conducted emissions induced by the SiC-converter, it's necessary to add an EMI filter in order to compliance the EMC standard. In this study, a design method of the EMI filter based on the simulation approach is proposed. For this, a high frequency model based on the electrical equivalent circuit of the filter which takes into account of all impedances of the system is proposed. However, values of the different elements of this model are determined by a new approach. The improvement provided by this model is important in high frequencies (above 1 MHz) taking into account the measured impedances of different propagation paths of the common mode currents of the system. The conducted emissions measured without and with the obtained EMI filter show the effectiveness of the proposed design method.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123270025","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 : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6872075
M. Coppola, P. Guerriero, F. Di Napoli, S. Daliento, D. Lauria, A. Del Pizzo
In this paper the design and the control of a PV (Photovoltaic) AC-module based on a double coupled-inductors boost topology are discussed. This circuital configuration allows obtaining of the high voltage amplification needed in individual panel applications. The operation principle of the proposed circuit is analyzed and a proper calibration of the PV panel simulation model is performed. The adopted control strategy is based upon sliding control technique in order to exploit its well-known properties of robustness. Furthermore, a Maximum Power Point Tracking (MPPT) approach based on a Incremental Conductance (IC) algorithm is used to track the actual maximum power point. Finally, the numerical results reported in the paper permit to confirm the feasibility of the proposed design and control strategy.
{"title":"A PV AC-module based on coupled-inductors boost DC/AC converter","authors":"M. Coppola, P. Guerriero, F. Di Napoli, S. Daliento, D. Lauria, A. Del Pizzo","doi":"10.1109/SPEEDAM.2014.6872075","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6872075","url":null,"abstract":"In this paper the design and the control of a PV (Photovoltaic) AC-module based on a double coupled-inductors boost topology are discussed. This circuital configuration allows obtaining of the high voltage amplification needed in individual panel applications. The operation principle of the proposed circuit is analyzed and a proper calibration of the PV panel simulation model is performed. The adopted control strategy is based upon sliding control technique in order to exploit its well-known properties of robustness. Furthermore, a Maximum Power Point Tracking (MPPT) approach based on a Incremental Conductance (IC) algorithm is used to track the actual maximum power point. Finally, the numerical results reported in the paper permit to confirm the feasibility of the proposed design and control strategy.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116516412","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 : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6872124
M. Ippolito, G. Zizzo, A. Piccolo, P. Siano
In this paper different innovative control logics for electric and thermal loads control in residential buildings are presented. The designed control logics are implementable in residential buildings thanks to Building Automation Control Systems (BACS) and Technical Building Management (TBM) systems. They have been tested using a simulation tool developed by the authors that is able to assess their effects on residential buildings having various characteristics and equipments. An application example is presented.
{"title":"Definition and application of innovative control logics for residential energy optimization","authors":"M. Ippolito, G. Zizzo, A. Piccolo, P. Siano","doi":"10.1109/SPEEDAM.2014.6872124","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6872124","url":null,"abstract":"In this paper different innovative control logics for electric and thermal loads control in residential buildings are presented. The designed control logics are implementable in residential buildings thanks to Building Automation Control Systems (BACS) and Technical Building Management (TBM) systems. They have been tested using a simulation tool developed by the authors that is able to assess their effects on residential buildings having various characteristics and equipments. An application example is presented.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116547291","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 : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6872036
L. Castellini, M. D'Andrea, N. Borgarelli
This paper focuses its attention on the wave energy converters (WEC), particularly the ones that use a moving body (wave activated bodies) coupled directly to a power take-off (PTO). It describes the analysis and the design of a small reciprocating linear permanent magnet generator. A comprehensive design methodology, which embraces both the electromagnetic and mechanical design, is described. Nonlinear electromagnetic and structural finite-element analysis are employed to aid the design. Results of the design are presented.
{"title":"Analysis and design of a recipracating linear generator for a PTO","authors":"L. Castellini, M. D'Andrea, N. Borgarelli","doi":"10.1109/SPEEDAM.2014.6872036","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6872036","url":null,"abstract":"This paper focuses its attention on the wave energy converters (WEC), particularly the ones that use a moving body (wave activated bodies) coupled directly to a power take-off (PTO). It describes the analysis and the design of a small reciprocating linear permanent magnet generator. A comprehensive design methodology, which embraces both the electromagnetic and mechanical design, is described. Nonlinear electromagnetic and structural finite-element analysis are employed to aid the design. Results of the design are presented.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"217 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122998449","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 : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6871936
V. Fireteanu, Alexandru-Ionel Constantin
This paper studies the influence of the short-circuit fault in the stator winding on the magnetic field outside induction motors through the time domain finite element analysis of the electromagnetic field. The basic idea of such fault detection consists in the comparison for the healthy and faulty states of the motor of the amplitudes of harmonics of the output voltage of coil sensors.
{"title":"Stator short-circuit faults detection based on harmonics of the magnetic field in the induction motors neighboring","authors":"V. Fireteanu, Alexandru-Ionel Constantin","doi":"10.1109/SPEEDAM.2014.6871936","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6871936","url":null,"abstract":"This paper studies the influence of the short-circuit fault in the stator winding on the magnetic field outside induction motors through the time domain finite element analysis of the electromagnetic field. The basic idea of such fault detection consists in the comparison for the healthy and faulty states of the motor of the amplitudes of harmonics of the output voltage of coil sensors.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122160393","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 : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6872063
F. Bizzarri, A. Brambilla
Voltage regulator modules (VRMs) used in modern computers can work in “extreme” conditions since they supply high currents at a very low voltage and keep voltage swing inside a small tolerance interval against large variations of load currents. This is done by designing a digital controller that allows the VRM to behave as much as possible as an ideal voltage source with a very small series resistor. This can be achieved through different possible choices of controlling schema. We show that, considering also effects due to parasitics, controlling schema reflect on stability and on the admissible minimum size of the capacitor bank filtering the VRM output voltage. Moreover we show how the output impedance of the VRM degrades versus lowering of the bank size. This is done by resorting to a general and efficient technique, already presented in the literature, allowing to (i) determine the periodic steady state behaviour of these circuits together with their stability and (ii) derive time varying transfer functions such as, for example, the output impedance of VRMs.
{"title":"Stability analysis of voltage regulators versus different digital control strategies by analog-mixed-signal circuit simulation","authors":"F. Bizzarri, A. Brambilla","doi":"10.1109/SPEEDAM.2014.6872063","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6872063","url":null,"abstract":"Voltage regulator modules (VRMs) used in modern computers can work in “extreme” conditions since they supply high currents at a very low voltage and keep voltage swing inside a small tolerance interval against large variations of load currents. This is done by designing a digital controller that allows the VRM to behave as much as possible as an ideal voltage source with a very small series resistor. This can be achieved through different possible choices of controlling schema. We show that, considering also effects due to parasitics, controlling schema reflect on stability and on the admissible minimum size of the capacitor bank filtering the VRM output voltage. Moreover we show how the output impedance of the VRM degrades versus lowering of the bank size. This is done by resorting to a general and efficient technique, already presented in the literature, allowing to (i) determine the periodic steady state behaviour of these circuits together with their stability and (ii) derive time varying transfer functions such as, for example, the output impedance of VRMs.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128234734","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 : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6871991
N. A. Azeez, S. Pramanick, K. Gopakumar, Carlo Cecati
In this paper, a 5th and 7th harmonic suppression technique for a 2-level VSI fed IM drive, by using capacitive filtering is proposed. A capacitor fed 2-level inverter is used on an open-end winding induction motor to suppress all 5th and 7th order harmonics. A PWM scheme that maintains the capacitor voltage, while suppressing the harmonics is also proposed. The proposed scheme is valid for the entire modulation range, including overmodulation and six-step mode of operation of the main inverter.
{"title":"A 5th and 7th order harmonic suppression scheme using capacitive filtering for 2-level VSI fed IM drive","authors":"N. A. Azeez, S. Pramanick, K. Gopakumar, Carlo Cecati","doi":"10.1109/SPEEDAM.2014.6871991","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6871991","url":null,"abstract":"In this paper, a 5th and 7th harmonic suppression technique for a 2-level VSI fed IM drive, by using capacitive filtering is proposed. A capacitor fed 2-level inverter is used on an open-end winding induction motor to suppress all 5th and 7th order harmonics. A PWM scheme that maintains the capacitor voltage, while suppressing the harmonics is also proposed. The proposed scheme is valid for the entire modulation range, including overmodulation and six-step mode of operation of the main inverter.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128318475","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 : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6872002
B. Verhelst, Jurgen Van Ryckeghem, J. Desmet
Many inverters are quoted as having a PF of better than 0.95 when in reality, the true power factor is between 0.5 and 0.75. This paper describes the influence of grid-connected inverters on the distribution grid. The impact of the voltage distortion from the inverter to the distribution grid is relative small without grid impedance. When the grid impedance is involved, the distortion will become higher and so, more harmonics will be injected into the grid. The impact of the current distortion is especially high at low power output, but decreases fast at moderate or high power. If the background distortion of the grid increases, there will be an increase of the voltage and current harmonics. The specific limits of the EN 50160 and IEC 61000-3-12 could be exceeded at such high pollution.
{"title":"Influence of grid-connected inverters on the power quality of the distribution grid","authors":"B. Verhelst, Jurgen Van Ryckeghem, J. Desmet","doi":"10.1109/SPEEDAM.2014.6872002","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6872002","url":null,"abstract":"Many inverters are quoted as having a PF of better than 0.95 when in reality, the true power factor is between 0.5 and 0.75. This paper describes the influence of grid-connected inverters on the distribution grid. The impact of the voltage distortion from the inverter to the distribution grid is relative small without grid impedance. When the grid impedance is involved, the distortion will become higher and so, more harmonics will be injected into the grid. The impact of the current distortion is especially high at low power output, but decreases fast at moderate or high power. If the background distortion of the grid increases, there will be an increase of the voltage and current harmonics. The specific limits of the EN 50160 and IEC 61000-3-12 could be exceeded at such high pollution.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128791179","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 : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6872033
M. Brela, A. Heyder, F. Dietlein, J. Markert, J. Franke, R. Hauenstein, R. Wagner
Common defects in electromagnetic actuators due to the manufacturing process are heterogeneous magnetic properties of the materials, cracks and defects in the magnetic materials and parasitic air gaps in and directly around the magnetic circuit. In most cases the error cause can be found in the value chain and is caused by material handling, assembling tolerances, environmental influences, etc. Considering the high global cost pressure, test systems must be adapted to the increasing complexity of the components in order to be able to detect defects completely in-situ and have smallest possible amortization period. For these requirements the novel and nondestructive measurement system is suitable to monitor and assure quality of magnetic actuators within the manufacturing process. The measuring principle is the characterization of electromagnetic actuators according to the detection of magnetic stray fields outside the magnetic circuit and the magnetic useful field inside the actuator that can be quantified by magnetic sensors. The intensity of the magnetic stray fields depends on the magnetic flux density and flux distribution in the magnetic circuit. Permeability variations for example caused by air gaps or internal stresses influence the flux distribution. In most cases they are caused by process parameter variations of the manufacturing and assembling. With the developed method this influences can be detected in an early stage of the manufacturing process automatically and in-line. This can lead to more competitiveness and long-term viability of the location.
{"title":"Use of automated in-line capable magnetic stray field measurement method for monitoring the value chain quality of magnetic circuits","authors":"M. Brela, A. Heyder, F. Dietlein, J. Markert, J. Franke, R. Hauenstein, R. Wagner","doi":"10.1109/SPEEDAM.2014.6872033","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6872033","url":null,"abstract":"Common defects in electromagnetic actuators due to the manufacturing process are heterogeneous magnetic properties of the materials, cracks and defects in the magnetic materials and parasitic air gaps in and directly around the magnetic circuit. In most cases the error cause can be found in the value chain and is caused by material handling, assembling tolerances, environmental influences, etc. Considering the high global cost pressure, test systems must be adapted to the increasing complexity of the components in order to be able to detect defects completely in-situ and have smallest possible amortization period. For these requirements the novel and nondestructive measurement system is suitable to monitor and assure quality of magnetic actuators within the manufacturing process. The measuring principle is the characterization of electromagnetic actuators according to the detection of magnetic stray fields outside the magnetic circuit and the magnetic useful field inside the actuator that can be quantified by magnetic sensors. The intensity of the magnetic stray fields depends on the magnetic flux density and flux distribution in the magnetic circuit. Permeability variations for example caused by air gaps or internal stresses influence the flux distribution. In most cases they are caused by process parameter variations of the manufacturing and assembling. With the developed method this influences can be detected in an early stage of the manufacturing process automatically and in-line. This can lead to more competitiveness and long-term viability of the location.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129925783","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 : 2014-06-18DOI: 10.1109/SPEEDAM.2014.6871943
F. De Belie, A. Darba, J. Melkebeek
Many electrical machines are nowadays controlled using digital controllers resulting in variable-speed drives. To enhance control engineers want to deal with the switching behaviour of the power converters or pulse-width modulation in more detail. To help them, in this paper, a previously proposed enhanced discrete-time model in the z-domain is applied to machine drives. Additionally, the application of a discrete-time anti-windup method for three-phase machines is presented.
{"title":"Digitally current controlled three-phase machines: Enhancements in dynamic analysis and antiwind-up scheme","authors":"F. De Belie, A. Darba, J. Melkebeek","doi":"10.1109/SPEEDAM.2014.6871943","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2014.6871943","url":null,"abstract":"Many electrical machines are nowadays controlled using digital controllers resulting in variable-speed drives. To enhance control engineers want to deal with the switching behaviour of the power converters or pulse-width modulation in more detail. To help them, in this paper, a previously proposed enhanced discrete-time model in the z-domain is applied to machine drives. Additionally, the application of a discrete-time anti-windup method for three-phase machines is presented.","PeriodicalId":344918,"journal":{"name":"2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130406483","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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