Pub Date : 2016-09-01DOI: 10.1109/EPE.2016.7695390
Ling Feng, Yong Wang
This paper proposed an improved selective harmonic current control method for three-level Active Power Filter (APF). The improved control method is not only able to compensate for any specified harmonic current, but also to simplify the design of the current controller and improve the stability of the system.
{"title":"A modified method of selective harmonic compensation for three-level active power filter","authors":"Ling Feng, Yong Wang","doi":"10.1109/EPE.2016.7695390","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695390","url":null,"abstract":"This paper proposed an improved selective harmonic current control method for three-level Active Power Filter (APF). The improved control method is not only able to compensate for any specified harmonic current, but also to simplify the design of the current controller and improve the stability of the system.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122131599","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695555
Joan-Marc Rodriguez-Bernuz, A. Junyent-Ferré
This paper presents a model predictive strategy to generate optimal reference signals for single-phase inverters. The reference signal is obtained from an optimisation problem, which can hold multiple objectives and constraints over a defined time horizon. Specifically, the proposed strategy is designed to trade off harmonic distortion for instantaneous DC bus voltage ripple regulation without exceeding physical system limitations.
{"title":"Model predictive current reference calculation for single-phase VSCs","authors":"Joan-Marc Rodriguez-Bernuz, A. Junyent-Ferré","doi":"10.1109/EPE.2016.7695555","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695555","url":null,"abstract":"This paper presents a model predictive strategy to generate optimal reference signals for single-phase inverters. The reference signal is obtained from an optimisation problem, which can hold multiple objectives and constraints over a defined time horizon. Specifically, the proposed strategy is designed to trade off harmonic distortion for instantaneous DC bus voltage ripple regulation without exceeding physical system limitations.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116875641","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695612
Daniele Petrili, A. Nami, C. Townsend, H. Z. de la Parra
This paper presents a modular multilevel Chain-link converter with reduced energy storage requirement by utilizing an active filter storage method at the converter cell level. The active filter circuit and control are analyzed in detail. A comparison with the conventional cell proves the effectiveness of the reactive energy storage reduction.
{"title":"Active ripple energy storage for a cascaded H-bridge multilevel converter","authors":"Daniele Petrili, A. Nami, C. Townsend, H. Z. de la Parra","doi":"10.1109/EPE.2016.7695612","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695612","url":null,"abstract":"This paper presents a modular multilevel Chain-link converter with reduced energy storage requirement by utilizing an active filter storage method at the converter cell level. The active filter circuit and control are analyzed in detail. A comparison with the conventional cell proves the effectiveness of the reactive energy storage reduction.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117013256","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695352
Martha Bugsch, B. Piepenbreier
An increasing number of sensorless control methods are being developed for a recently rediscovered machine type: synchronous reluctance machines (SynRMs). The advantage of sensorless control methods is that the position sensor can be omitted. Many alternative methods are conceivable, but in all of them, it is impossible to observe and estimate the electrical rotor position at standstill and at low speed without additional excitation via high-frequency (HF) test signals. To calculate the position information from the current or voltage response of these test signals, a detailed machine model is necessary. The challenge is to identify the parameter of the machine model that characterises the HF machine behaviour. Thus, there is a need to find a proper identification method and to analyse these HF parameters for different HF test signal frequencies and amplitudes. Thereby, one can determine which test signal frequencies and amplitudes are best suited for sensorless control of SynRMs. Therefore in this paper an HF parameter identification method is described and the corresponding measurement results for a SynRM are analysed. A test current signal injection method is used. Different test signal frequencies and amplitudes, as well as the position dependencies, are compared. It can be concluded that, first a appropriate test signal frequency and amplitude combination has to be selected that offers enough voltage reserve to control the fundamental behaviour of the machine. Moreover, the HF parameters should be measured exactly for the combination used because there is a dependency of the HF parameters on the test signal frequency and amplitude that is significant but not equally strong. Position averaged measured values ensure high-precision HF parameter results. SynRMs are suitable for saliency-based sensorless control methods based on test signal injection because they have an inherent machine parameter saliency due to their rotor design.
{"title":"HF parameter identification using test current injection for sensorless control of a synchronous reluctance machine (SynRM)","authors":"Martha Bugsch, B. Piepenbreier","doi":"10.1109/EPE.2016.7695352","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695352","url":null,"abstract":"An increasing number of sensorless control methods are being developed for a recently rediscovered machine type: synchronous reluctance machines (SynRMs). The advantage of sensorless control methods is that the position sensor can be omitted. Many alternative methods are conceivable, but in all of them, it is impossible to observe and estimate the electrical rotor position at standstill and at low speed without additional excitation via high-frequency (HF) test signals. To calculate the position information from the current or voltage response of these test signals, a detailed machine model is necessary. The challenge is to identify the parameter of the machine model that characterises the HF machine behaviour. Thus, there is a need to find a proper identification method and to analyse these HF parameters for different HF test signal frequencies and amplitudes. Thereby, one can determine which test signal frequencies and amplitudes are best suited for sensorless control of SynRMs. Therefore in this paper an HF parameter identification method is described and the corresponding measurement results for a SynRM are analysed. A test current signal injection method is used. Different test signal frequencies and amplitudes, as well as the position dependencies, are compared. It can be concluded that, first a appropriate test signal frequency and amplitude combination has to be selected that offers enough voltage reserve to control the fundamental behaviour of the machine. Moreover, the HF parameters should be measured exactly for the combination used because there is a dependency of the HF parameters on the test signal frequency and amplitude that is significant but not equally strong. Position averaged measured values ensure high-precision HF parameter results. SynRMs are suitable for saliency-based sensorless control methods based on test signal injection because they have an inherent machine parameter saliency due to their rotor design.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128534872","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695489
Leo Rolff, Eva Schulte Bocholt, L. Lohaus, R. Wunderlich, S. Heinen
Integrated gate-drivers for power MOSFETs require multiple supply voltages biasing internal circuitry or providing a high voltage ground to the high-side driver. This paper proposes a novel DC-DC converter architecture fulfilling these demands of modern gate-driver ASICs while increasing system efficiency. In the proposed concept a conventional single inductor DC-DC converter generating a low voltage supply to auxiliary circuits from a high voltage input is extended by using the high-voltage ground of the gatedriver as an additional input to the converter. This input voltage is controlled to remain nearly constant by adapting its load current with an attached current sink. The charge drained from the high-voltage ground by this current sink is reused to boost system efficiency of the converter. The developed concept is also applicable to converters operating in higher power regimes.
{"title":"Multiple input, single output, single inductor DC-DC converter architecture providing charge reuse by an efficient high voltage current sink","authors":"Leo Rolff, Eva Schulte Bocholt, L. Lohaus, R. Wunderlich, S. Heinen","doi":"10.1109/EPE.2016.7695489","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695489","url":null,"abstract":"Integrated gate-drivers for power MOSFETs require multiple supply voltages biasing internal circuitry or providing a high voltage ground to the high-side driver. This paper proposes a novel DC-DC converter architecture fulfilling these demands of modern gate-driver ASICs while increasing system efficiency. In the proposed concept a conventional single inductor DC-DC converter generating a low voltage supply to auxiliary circuits from a high voltage input is extended by using the high-voltage ground of the gatedriver as an additional input to the converter. This input voltage is controlled to remain nearly constant by adapting its load current with an attached current sink. The charge drained from the high-voltage ground by this current sink is reused to boost system efficiency of the converter. The developed concept is also applicable to converters operating in higher power regimes.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128777530","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695516
Guibin Li, Zedong Zheng, Yongdong Li, Zhiguo Wang
High speed motor control is a key technology in the locomotive traction system. Because of the limitation of the switching frequency and voltage level in high power inverter, modulation method with high voltage utilization ratio and lower low-frequency harmonics is necessary. In this paper, a novel PWM method equivalent with the traditional SVPWM method is proposed, which is realized by the comparison of zero-sequence voltage injected modulation wave and carrier-waves. The over-modulation and smooth transition to six-step square wave modulation was realized by the adjustment of the modulation wave. Moreover, the synchronous modulation can be applied to reduce low-frequency harmonics by the adjustment of the carrier-wave frequency. The corresponding motor control method including flux-weakening control and current open-loop control are also proposed in coordination with the modulation method. The validity of the proposed method has been verified by both simulation in MATLAB and experiments on an industrial 160kW, 750V experimental platform.
{"title":"Synchronous SVPWM over-modulation method based on zero-sequence voltage injection in locomotive traction","authors":"Guibin Li, Zedong Zheng, Yongdong Li, Zhiguo Wang","doi":"10.1109/EPE.2016.7695516","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695516","url":null,"abstract":"High speed motor control is a key technology in the locomotive traction system. Because of the limitation of the switching frequency and voltage level in high power inverter, modulation method with high voltage utilization ratio and lower low-frequency harmonics is necessary. In this paper, a novel PWM method equivalent with the traditional SVPWM method is proposed, which is realized by the comparison of zero-sequence voltage injected modulation wave and carrier-waves. The over-modulation and smooth transition to six-step square wave modulation was realized by the adjustment of the modulation wave. Moreover, the synchronous modulation can be applied to reduce low-frequency harmonics by the adjustment of the carrier-wave frequency. The corresponding motor control method including flux-weakening control and current open-loop control are also proposed in coordination with the modulation method. The validity of the proposed method has been verified by both simulation in MATLAB and experiments on an industrial 160kW, 750V experimental platform.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"2020 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128805026","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695395
Ke Wang, Yao-hua Li, Qiongxuan Ge, Liming Shi
The characteristic of linear induction motor (LIM) are quite different from the rotary induction motor (RIM) due to the end effects and so on. The conventional high performance control scheme like indirect field oriented control (IFOC) cannot be directly adopted for LIM drives. In this paper, the traction characteristic of the LIM and RIM are compared from different perspectives. The performance of different control laws of LIM are discussed with consideration of the limitations of traction inverters. The indirect field oriented control scheme based on optimized slip frequency is proposed which can effectively improve the output thrust performance of LIM without primary current increasing. Both simulation and experimental results show the effectiveness of the proposed scheme, which can be adopted for the traction control of LIM drives.
{"title":"Indirect field oriented control of linear induction motor based on optimized slip frequency for traction application","authors":"Ke Wang, Yao-hua Li, Qiongxuan Ge, Liming Shi","doi":"10.1109/EPE.2016.7695395","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695395","url":null,"abstract":"The characteristic of linear induction motor (LIM) are quite different from the rotary induction motor (RIM) due to the end effects and so on. The conventional high performance control scheme like indirect field oriented control (IFOC) cannot be directly adopted for LIM drives. In this paper, the traction characteristic of the LIM and RIM are compared from different perspectives. The performance of different control laws of LIM are discussed with consideration of the limitations of traction inverters. The indirect field oriented control scheme based on optimized slip frequency is proposed which can effectively improve the output thrust performance of LIM without primary current increasing. Both simulation and experimental results show the effectiveness of the proposed scheme, which can be adopted for the traction control of LIM drives.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124563014","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695274
M. Sawada, S. Yoshiwatari, Hiroaki Ichikawa, Y. Onozawa, O. Ikawa, T. Heinzel, Alexander Theisen
This paper describes 1700V IGBT module with the 7th generation (7G) IGBT technologies. By further improvement of the chip characteristics and the development of new high reliability package materials and technologies, the performance of the modules are significantly improved. In addition, an extra thermal performance of lower thermal impedance is achieved with successful implementation of novel enhanced strength AlN isolation substrate. The integration of new chip and package technologies make it possible to achieve significant increase of watts density of about 30% (11.2kW/cm2 (6G)-> 14.4kW/cm2 (7G)).
{"title":"High performance 1700V IGBT module with the 7th generation chipset/package technologies","authors":"M. Sawada, S. Yoshiwatari, Hiroaki Ichikawa, Y. Onozawa, O. Ikawa, T. Heinzel, Alexander Theisen","doi":"10.1109/EPE.2016.7695274","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695274","url":null,"abstract":"This paper describes 1700V IGBT module with the 7th generation (7G) IGBT technologies. By further improvement of the chip characteristics and the development of new high reliability package materials and technologies, the performance of the modules are significantly improved. In addition, an extra thermal performance of lower thermal impedance is achieved with successful implementation of novel enhanced strength AlN isolation substrate. The integration of new chip and package technologies make it possible to achieve significant increase of watts density of about 30% (11.2kW/cm2 (6G)-> 14.4kW/cm2 (7G)).","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126668380","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695634
M. Malengret, C. Gaunt
The local control of inverters and compensators, based on measurements of the power system and calculation of the optimum current to be injected into each phase, has been tested in simulation and implemented in hardware with a rating of 24 kW, with results as predicted by the general power theory. The approach is scalable for ac and dc systems.
{"title":"Inverters and compensators for minimum line losses","authors":"M. Malengret, C. Gaunt","doi":"10.1109/EPE.2016.7695634","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695634","url":null,"abstract":"The local control of inverters and compensators, based on measurements of the power system and calculation of the optimum current to be injected into each phase, has been tested in simulation and implemented in hardware with a rating of 24 kW, with results as predicted by the general power theory. The approach is scalable for ac and dc systems.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126671821","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695618
D. Pappis, E. F. de Oliveira, P. Zacharias
A technique to actively balance the voltages on series-connected capacitors designated to split DC sources whose loads comprise power converters is presented. It performs such balancing dynamically, enabling the voltage equalization even for small capacitors under wide power and voltages ranges. Proposal consists on lightly controlling the power of one input capacitor for each pair, measuring their voltage difference and, based upon that, generating a single control signal. Thereby, it then controls the power drained individually from that capacitor, whilst the total load remains being supplied by the whole pair. The performance of the proposed capacitor voltage balancing control loop has been demonstrated by means of experimental results of a 300 V-6 kW bipolar-buck (330 V-1500 V supply).
{"title":"Method for balancing capacitors voltages on split DC-links","authors":"D. Pappis, E. F. de Oliveira, P. Zacharias","doi":"10.1109/EPE.2016.7695618","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695618","url":null,"abstract":"A technique to actively balance the voltages on series-connected capacitors designated to split DC sources whose loads comprise power converters is presented. It performs such balancing dynamically, enabling the voltage equalization even for small capacitors under wide power and voltages ranges. Proposal consists on lightly controlling the power of one input capacitor for each pair, measuring their voltage difference and, based upon that, generating a single control signal. Thereby, it then controls the power drained individually from that capacitor, whilst the total load remains being supplied by the whole pair. The performance of the proposed capacitor voltage balancing control loop has been demonstrated by means of experimental results of a 300 V-6 kW bipolar-buck (330 V-1500 V supply).","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129035380","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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