Pub Date : 2018-09-01DOI: 10.1109/ECCE.2018.8558146
I. da Silva, C. Jacobina, Reuben P. R. Sousa, A. C. N. Maia, N. B. de Freitas, I. S. de Freitas
In this paper, a new unidirectional multilevel six-phase power rectifier topology, which may be applied to wind energy conversions systems (WECS), is proposed and investigated. Such topology is composed by two three-level neutral-point-clamped (NPC) converters connected to the open-end windings (OEW) of a six-phase permanent magnet synchronous generator (PMSG), a non-controlled three-phase converter and three isolated DC-links. The use of a non-controlled converter with diodes makes the system non-reversible. It aims to reduce the controlled switch count, the system complexity and the costs. The system model, operating principles, a space vector pulse width modulation (SV-PWM) strategy and a control system to ensure the elimination of the zero-crossover distortion caused by the use of the diodes are presented. The SV-PWM technique, implementated by means of equivalent level-shifted PWM (LS-PWM), generates multilevel voltage waveforms with reduced harmonic distortion. Due to the high number of levels generated, the system is suitable for high power applications with voltage and current ratings restrictions. A study concerning harmonic distortion, semiconductor losses and the common-mode voltage (CMV) investigation is carried out. The performance of the system is compared with a standard configuration. The feasibilty of the system is demonstrated by simulation and experimental results.
{"title":"Open-End Winding Multilevel Unidirectional Six-Phase Rectifier With Reduced Switch Count","authors":"I. da Silva, C. Jacobina, Reuben P. R. Sousa, A. C. N. Maia, N. B. de Freitas, I. S. de Freitas","doi":"10.1109/ECCE.2018.8558146","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8558146","url":null,"abstract":"In this paper, a new unidirectional multilevel six-phase power rectifier topology, which may be applied to wind energy conversions systems (WECS), is proposed and investigated. Such topology is composed by two three-level neutral-point-clamped (NPC) converters connected to the open-end windings (OEW) of a six-phase permanent magnet synchronous generator (PMSG), a non-controlled three-phase converter and three isolated DC-links. The use of a non-controlled converter with diodes makes the system non-reversible. It aims to reduce the controlled switch count, the system complexity and the costs. The system model, operating principles, a space vector pulse width modulation (SV-PWM) strategy and a control system to ensure the elimination of the zero-crossover distortion caused by the use of the diodes are presented. The SV-PWM technique, implementated by means of equivalent level-shifted PWM (LS-PWM), generates multilevel voltage waveforms with reduced harmonic distortion. Due to the high number of levels generated, the system is suitable for high power applications with voltage and current ratings restrictions. A study concerning harmonic distortion, semiconductor losses and the common-mode voltage (CMV) investigation is carried out. The performance of the system is compared with a standard configuration. The feasibilty of the system is demonstrated by simulation and experimental results.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"1802 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129644383","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557849
Qin Chen, R. Raju, D. Dong, M. Agamy
The high frequency transformer is a critical component of the isolated DC-DC converters in high-frequency, medium-voltage solid-state transformer. The adoption of wide band gap semiconductor allows for devices to switch at much higher frequencies. The size-reduction potential enabled by the high frequency is limited by the loss, cooling rate, and insulation level. The insulation plays an especially important role when high isolation level is needed. In this paper, the design and impact of the insulation on the performance of the high-frequency, medium-voltage transformers will be analyzed. A high-frequency transformer insulation design will be proposed, which can be used in SiC-based solid state transformers for 13.8 kV AC grid. With a shielded, partial-discharge-free design, polymer/inorganic insulation system, basic insulation level (BIL) of ±95 kV have been demonstrated and the effective thermal conductivity at least 0.8 W/m-K, which is about 2–3 times higher than polymer materials capable of reaching similar BIL levels.
{"title":"High Frequency Transformer Insulation in Medium Voltage SiC enabled Air-cooled Solid-State Transformers","authors":"Qin Chen, R. Raju, D. Dong, M. Agamy","doi":"10.1109/ECCE.2018.8557849","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557849","url":null,"abstract":"The high frequency transformer is a critical component of the isolated DC-DC converters in high-frequency, medium-voltage solid-state transformer. The adoption of wide band gap semiconductor allows for devices to switch at much higher frequencies. The size-reduction potential enabled by the high frequency is limited by the loss, cooling rate, and insulation level. The insulation plays an especially important role when high isolation level is needed. In this paper, the design and impact of the insulation on the performance of the high-frequency, medium-voltage transformers will be analyzed. A high-frequency transformer insulation design will be proposed, which can be used in SiC-based solid state transformers for 13.8 kV AC grid. With a shielded, partial-discharge-free design, polymer/inorganic insulation system, basic insulation level (BIL) of ±95 kV have been demonstrated and the effective thermal conductivity at least 0.8 W/m-K, which is about 2–3 times higher than polymer materials capable of reaching similar BIL levels.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130399039","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8558155
Xiliang Chen, Wenjie Chen, Yu Ren, Liang Qiao, Xu Yang
Due to the high dv/dt slew rate and closely packaged design, the electromagnetic interference (EMI) issue in the high power level integrated power module is extremely serious. In this paper, a novel EMI model of full-SiC MOSFET integrated power module is proposed based on the ANSYS Q3D software and the parasitic capacitance which could influence the EMI characteristics of power module are extracted. Then, a simulation methodology that incorporates co-simulation techniques using ANSYS EM tools is proposed to predict radiated and conducted EMI from power electronic modules. Finally, two synchronous buck experimental platform based on a commercial full-SiC MOSFET integrated power module and a self-created one which optimize the layout are tested and compared. It is found that the intensity of EMI increases as the voltage and current of power module increase. The intensity of the common-mode (CM) EMI presents uniform distribution along with frequency. A resonant peak appears at specific frequency points of the differential-mode (DM) EMI. Due to the optimal layout, the reduction of the parasitic capacitance and inductance will decrease the EMI intensity.
{"title":"An Advanced Design of Power Module with EMI Reduction Method","authors":"Xiliang Chen, Wenjie Chen, Yu Ren, Liang Qiao, Xu Yang","doi":"10.1109/ECCE.2018.8558155","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8558155","url":null,"abstract":"Due to the high dv/dt slew rate and closely packaged design, the electromagnetic interference (EMI) issue in the high power level integrated power module is extremely serious. In this paper, a novel EMI model of full-SiC MOSFET integrated power module is proposed based on the ANSYS Q3D software and the parasitic capacitance which could influence the EMI characteristics of power module are extracted. Then, a simulation methodology that incorporates co-simulation techniques using ANSYS EM tools is proposed to predict radiated and conducted EMI from power electronic modules. Finally, two synchronous buck experimental platform based on a commercial full-SiC MOSFET integrated power module and a self-created one which optimize the layout are tested and compared. It is found that the intensity of EMI increases as the voltage and current of power module increase. The intensity of the common-mode (CM) EMI presents uniform distribution along with frequency. A resonant peak appears at specific frequency points of the differential-mode (DM) EMI. Due to the optimal layout, the reduction of the parasitic capacitance and inductance will decrease the EMI intensity.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126764314","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8558468
Sudipta Sen, S. Mehraeen, F. Ferdowsi
Fault interruption in de circuits is more challenging than in their ac counterparts. The absence of natural current zero crossing along with resistive nature of the dc grids creates a significantly higher fault current to disrupt at the dc circuit breakers. Available approaches to break dc fault currents include creating forced zero-crossing current at the breaker or employing solid-state circuit breakers. This paper summarizes the current dc breaker technologies and proposes a new alternate method. The proposed mechanism is a mechanical circuit breaker that utilizes two switches, of which one generates zero-crossing with an alternate oscillatory circuit for the other one, which can be a conventional zero crossing-based ac breaker and is used in the main circuit. This is different than the conventional single-switch commute-and-absorb method currently used. It is shown that the proposed oscillatory circuit improves the fault current extinction and significantly reduces the voltage rate-of-change while creating the current zero-crossing faster, when compared to the available technology. Thus, the proposed mechanism is capable of interrupting high de currents with minimal arc through a less expensive ac circuit breaker. Simulation and hardware results are provided to show the efficiency of the proposed breaker.
{"title":"Improving DC Circuit Breaker Performance Through an Alternate Commutating Circuit","authors":"Sudipta Sen, S. Mehraeen, F. Ferdowsi","doi":"10.1109/ECCE.2018.8558468","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8558468","url":null,"abstract":"Fault interruption in de circuits is more challenging than in their ac counterparts. The absence of natural current zero crossing along with resistive nature of the dc grids creates a significantly higher fault current to disrupt at the dc circuit breakers. Available approaches to break dc fault currents include creating forced zero-crossing current at the breaker or employing solid-state circuit breakers. This paper summarizes the current dc breaker technologies and proposes a new alternate method. The proposed mechanism is a mechanical circuit breaker that utilizes two switches, of which one generates zero-crossing with an alternate oscillatory circuit for the other one, which can be a conventional zero crossing-based ac breaker and is used in the main circuit. This is different than the conventional single-switch commute-and-absorb method currently used. It is shown that the proposed oscillatory circuit improves the fault current extinction and significantly reduces the voltage rate-of-change while creating the current zero-crossing faster, when compared to the available technology. Thus, the proposed mechanism is capable of interrupting high de currents with minimal arc through a less expensive ac circuit breaker. Simulation and hardware results are provided to show the efficiency of the proposed breaker.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126977283","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8558286
Zhongyi Quan, Y. Li
This paper discusses the synthesis of high-level multilevel converter topologies. Existing topologies are reviewed first, and it shows that these topologies are classified as three types based on their synthesis principles. The pros and cons of each type are discussed and summarized. Then a new topology synthesis concept, i.e. the Internal Parallelization (IP), is introduced. Experimental results using two examples are provided to verify their functionalities. Finally, design considerations of a 70kW high density inverter with 1500V DC link capability are presented.
{"title":"Multilevel Converter Topologies with Internally Paralleled Power Stages","authors":"Zhongyi Quan, Y. Li","doi":"10.1109/ECCE.2018.8558286","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8558286","url":null,"abstract":"This paper discusses the synthesis of high-level multilevel converter topologies. Existing topologies are reviewed first, and it shows that these topologies are classified as three types based on their synthesis principles. The pros and cons of each type are discussed and summarized. Then a new topology synthesis concept, i.e. the Internal Parallelization (IP), is introduced. Experimental results using two examples are provided to verify their functionalities. Finally, design considerations of a 70kW high density inverter with 1500V DC link capability are presented.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130564586","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557374
T. Soejima, Y. Ishizuka, K. Domoto, Toshiro Hirose
Recently, energy network systems with energy storage such as batteries have been focused on using for electric vehicles and power grid systems. Therefore, the Dual Active Bridge (DAB) dc-dc converter has been focused on because it has some unique advantages, such as bi-directional power transmission and high efficiency by Zero-Voltage-Switching (ZVS). However, hard switching and surge current are critical issues at light load. For the improvement of this problem, “masked-switching control (MSC)” was reported previously. However, another hard switching and surge current has confirmed at medium load by MSC. In this paper, the adaptive control method is proposed that can reduce surge current and operate ZVS at medium load. By experimental results, 1.4% of maximum power efficiency improvement at the medium load is confirmed. From the results, it can be seen that the proposed control method can achieve ZVS and realization of high power efficiency with wide load range.
{"title":"Adaptive Control Technique for High Power Efficiency Dual Active Bridge DC-DC Converter with Wide Load Range","authors":"T. Soejima, Y. Ishizuka, K. Domoto, Toshiro Hirose","doi":"10.1109/ECCE.2018.8557374","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557374","url":null,"abstract":"Recently, energy network systems with energy storage such as batteries have been focused on using for electric vehicles and power grid systems. Therefore, the Dual Active Bridge (DAB) dc-dc converter has been focused on because it has some unique advantages, such as bi-directional power transmission and high efficiency by Zero-Voltage-Switching (ZVS). However, hard switching and surge current are critical issues at light load. For the improvement of this problem, “masked-switching control (MSC)” was reported previously. However, another hard switching and surge current has confirmed at medium load by MSC. In this paper, the adaptive control method is proposed that can reduce surge current and operate ZVS at medium load. By experimental results, 1.4% of maximum power efficiency improvement at the medium load is confirmed. From the results, it can be seen that the proposed control method can achieve ZVS and realization of high power efficiency with wide load range.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130650933","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557528
Shuai You, Z. Wang, Yang Xu, Huafeng Xiao, M. Cheng
In this paper, an integrated electrolytic capacitorless onboard charger is proposed for electric vehicles, which consists of a phase-shift full-bridge (PSFB) DC/DC converter cascaded by a three-phase four-leg (TPFL) DC/AC converter that realizes both vehicle-to-grid (V2G) and traction operation. An active snubber is connected to the DC link to suppress the voltage spike induced by current mismatch between the two converters and reduce power loss in comparison with passive snubber. By phase shifting the primary H-bridge of PSFB, the DC link voltage is high-frequency pulsating owing to the absence of electrolytic capacitance, which provides ZVS condition for secondary H-bridge and TPFL. To utilize the zero portion of DC link voltage, finite-set model-predictive-control (FS-MPC) and switch-table direct-torque-control (ST-DTC) are adopted to regulate TPFL in V2G operation mode and traction operation mode, respectively. For comparison, a conventional topology with DC link electrolytic capacitor is also studied. Simulation and experiment are conducted to verify the effectiveness of the proposed integrated onboard charger and compare the conversion efficiency with conventional onboard charger.
{"title":"An Integrated Electrolytic Capacitorless Onboard Charger for Electric Vehicles","authors":"Shuai You, Z. Wang, Yang Xu, Huafeng Xiao, M. Cheng","doi":"10.1109/ECCE.2018.8557528","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557528","url":null,"abstract":"In this paper, an integrated electrolytic capacitorless onboard charger is proposed for electric vehicles, which consists of a phase-shift full-bridge (PSFB) DC/DC converter cascaded by a three-phase four-leg (TPFL) DC/AC converter that realizes both vehicle-to-grid (V2G) and traction operation. An active snubber is connected to the DC link to suppress the voltage spike induced by current mismatch between the two converters and reduce power loss in comparison with passive snubber. By phase shifting the primary H-bridge of PSFB, the DC link voltage is high-frequency pulsating owing to the absence of electrolytic capacitance, which provides ZVS condition for secondary H-bridge and TPFL. To utilize the zero portion of DC link voltage, finite-set model-predictive-control (FS-MPC) and switch-table direct-torque-control (ST-DTC) are adopted to regulate TPFL in V2G operation mode and traction operation mode, respectively. For comparison, a conventional topology with DC link electrolytic capacitor is also studied. Simulation and experiment are conducted to verify the effectiveness of the proposed integrated onboard charger and compare the conversion efficiency with conventional onboard charger.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"33 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123805041","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557757
Byeong-Heon Kim, Heonyoung Kim, S. Bhattacharya
In this paper, the control and state observer for grid connected PWM converter with LCL filter has been discussed. The discrete state-space observer is designed in the d-q synchronous reference frame. Using the coordinate change of the matrix, the alternative state equation, which has diagonal system matrix, is obtained. Discretization of alternative state equation using Zero-Order Hold method is suggested, and the discrete form is simpler than that derived by original system matrix. By considering control stability with respect to the relation between filter resonant frequency and sampling frequency, current control scheme with feedback signal from state observer is also proposed. The digital delay to the PWM and sampling is considered for digital implementations.
{"title":"Discrete Diagonal State Estimator based Current Control for Grid Connected PWM Converter with an LCL filter","authors":"Byeong-Heon Kim, Heonyoung Kim, S. Bhattacharya","doi":"10.1109/ECCE.2018.8557757","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557757","url":null,"abstract":"In this paper, the control and state observer for grid connected PWM converter with LCL filter has been discussed. The discrete state-space observer is designed in the d-q synchronous reference frame. Using the coordinate change of the matrix, the alternative state equation, which has diagonal system matrix, is obtained. Discretization of alternative state equation using Zero-Order Hold method is suggested, and the discrete form is simpler than that derived by original system matrix. By considering control stability with respect to the relation between filter resonant frequency and sampling frequency, current control scheme with feedback signal from state observer is also proposed. The digital delay to the PWM and sampling is considered for digital implementations.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121167465","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8558083
A. Amerise, M. Mengoni, G. Rizzoli, L. Zarri, A. Tani, G. Serra
A dual inverter bridge is used to feed a 3-phase induction motor with open-end stator windings. The dual inverter is composed of a primary bridge connected to the power source and a secondary bridge with a floating capacitor. While the primary bridge operates at unity power factor, the secondary inverter produces the reactive power and boosts the voltage applied to the stator phases of the machine. As a result, the constant-power speed range of the induction machine increases in proportion to the secondary DC-link voltage. Another feature is that the primary inverter can operate in the overmodulation range without reducing the quality of the stator currents due to the compensating action of the secondary inverter. Experimental results show that the output power rises by about 10% in the field weakening speed region.
{"title":"Open-End Winding Induction Motor Drive with a Floating Capacitor Bridge and Overmodulation of the Primary Inverter","authors":"A. Amerise, M. Mengoni, G. Rizzoli, L. Zarri, A. Tani, G. Serra","doi":"10.1109/ECCE.2018.8558083","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8558083","url":null,"abstract":"A dual inverter bridge is used to feed a 3-phase induction motor with open-end stator windings. The dual inverter is composed of a primary bridge connected to the power source and a secondary bridge with a floating capacitor. While the primary bridge operates at unity power factor, the secondary inverter produces the reactive power and boosts the voltage applied to the stator phases of the machine. As a result, the constant-power speed range of the induction machine increases in proportion to the secondary DC-link voltage. Another feature is that the primary inverter can operate in the overmodulation range without reducing the quality of the stator currents due to the compensating action of the secondary inverter. Experimental results show that the output power rises by about 10% in the field weakening speed region.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121171528","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8558379
Joohyun Lee, Yong-Cheol Kwon, S. Sul
This paper proposes an identification scheme of interior permanent-magnet synchronous motor (IPMSM) flux-linkage through experimental tests considering the magnetic saturation and spatial harmonics. In proposed scheme, flux-linkage is identified based on the voltage equation of IPMSM. The electro-motive force in rotor reference frame is obtained in real time by applying discrete Fourier transform on the voltage reference of proportional integral and resonant current controller, with precise compensation of the time delay from digital control and PWM on fundamental and harmonic components. The effect of the inverter nonlinearity is compensated using experimentally obtained look up table. Simulation model is constructed using the identified flux-linkage map. The effectiveness of the proposed flux-linkage identification scheme in simulating IPMSM control algorithms is verified through the comparison of simulation and experimental results.
{"title":"Experimental Identification of IPMSM Flux-Linkage Considering Spatial Harmonics for High-Accuracy Simulation of IPMSM Drives","authors":"Joohyun Lee, Yong-Cheol Kwon, S. Sul","doi":"10.1109/ECCE.2018.8558379","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8558379","url":null,"abstract":"This paper proposes an identification scheme of interior permanent-magnet synchronous motor (IPMSM) flux-linkage through experimental tests considering the magnetic saturation and spatial harmonics. In proposed scheme, flux-linkage is identified based on the voltage equation of IPMSM. The electro-motive force in rotor reference frame is obtained in real time by applying discrete Fourier transform on the voltage reference of proportional integral and resonant current controller, with precise compensation of the time delay from digital control and PWM on fundamental and harmonic components. The effect of the inverter nonlinearity is compensated using experimentally obtained look up table. Simulation model is constructed using the identified flux-linkage map. The effectiveness of the proposed flux-linkage identification scheme in simulating IPMSM control algorithms is verified through the comparison of simulation and experimental results.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121406771","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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