Pub Date : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579212
K. Song, Yong Jin, Hag-Wone Kim, Kwan-Yuhl Cho, B. Han
Generally, PHEV(plug-in hybrid electric vehicle) is driven by the engine, the primary traction motor, and the secondary auxiliary motor generating the electric power for battery charging. Secondary auxiliary motor should be connected to the engine or separated from the engine by the clutch system. This paper presents the position controller using BLDC motor for the clutch system of PHEV. BLDC motor can be applied to the clutch system in spite of it's low resolution of the position sensor due to high gear ratio between the clutch and the motor. Since the attachment and the detachment between the motor and the engine should be carried out within 0.3 seconds, the position controller with fast acceleration and deceleration must be implemented. For the torque control with braking operation for the BLDC motor, the modified bipolar PWM method with low current ripple compared to the conventional unipolar PWM is proposed. The position control performance of the BLDC motor for clutch system is verified through the simulation and experiments.
{"title":"Position control Of BLDC motor with modified bipolar PWM for clutch system Of PHEV","authors":"K. Song, Yong Jin, Hag-Wone Kim, Kwan-Yuhl Cho, B. Han","doi":"10.1109/ECCE-ASIA.2013.6579212","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579212","url":null,"abstract":"Generally, PHEV(plug-in hybrid electric vehicle) is driven by the engine, the primary traction motor, and the secondary auxiliary motor generating the electric power for battery charging. Secondary auxiliary motor should be connected to the engine or separated from the engine by the clutch system. This paper presents the position controller using BLDC motor for the clutch system of PHEV. BLDC motor can be applied to the clutch system in spite of it's low resolution of the position sensor due to high gear ratio between the clutch and the motor. Since the attachment and the detachment between the motor and the engine should be carried out within 0.3 seconds, the position controller with fast acceleration and deceleration must be implemented. For the torque control with braking operation for the BLDC motor, the modified bipolar PWM method with low current ripple compared to the conventional unipolar PWM is proposed. The position control performance of the BLDC motor for clutch system is verified through the simulation and experiments.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124163713","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 : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579131
Liu Fangcheng, Liu Jinjun, Zhang Bin, Zhang Hao-dong, H. S. Ul
Impedance-based stability criterions have been proved to be a very effective tool for the stability assessment when considering interaction between different modules. Two different stability criterions in the form of impedance ratio as Zo/Zi and Zi/Zo have been proposed for different system. However, the intrinsic relationship of these criterions has not been fully discussed. In this paper, the terminal characteristics of single module are focused. The physical meanings of terminal impedance and admittance are explained. Based on the physical understanding, different mathematical methods are derived for the stability prediction in cascade system. Through comparison, the advantage of proposed impedance/admittance stability criterion is analyzed as its convenience in mathematical calculation. As analyzed, the proposed impedance/admittance criterion can be used in the cascade system where existing impedance ratio type criterion can be used and the physical meaning of proposed criterion is clearer.
{"title":"General impedance/admittance stability criterion for cascade system","authors":"Liu Fangcheng, Liu Jinjun, Zhang Bin, Zhang Hao-dong, H. S. Ul","doi":"10.1109/ECCE-ASIA.2013.6579131","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579131","url":null,"abstract":"Impedance-based stability criterions have been proved to be a very effective tool for the stability assessment when considering interaction between different modules. Two different stability criterions in the form of impedance ratio as Zo/Zi and Zi/Zo have been proposed for different system. However, the intrinsic relationship of these criterions has not been fully discussed. In this paper, the terminal characteristics of single module are focused. The physical meanings of terminal impedance and admittance are explained. Based on the physical understanding, different mathematical methods are derived for the stability prediction in cascade system. Through comparison, the advantage of proposed impedance/admittance stability criterion is analyzed as its convenience in mathematical calculation. As analyzed, the proposed impedance/admittance criterion can be used in the cascade system where existing impedance ratio type criterion can be used and the physical meaning of proposed criterion is clearer.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125140600","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 : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579203
I. Abdelsalam, G. Adam, D. Holliday, B. Williams
The steady-state and dynamic performances of a new high-power variable speed wind-energy conversion system (WECS) that uses a six-phase permanent magnet synchronous generator (PMSG) with twelve-pulse back-to-back pulse width modulated current source converters is assessed. The proposed WECS inherently has all the features of existing systems based on voltage source converters, such as voltage control and fault ride-through capability, but with increased reliability and improved ac side waveform quality, benefiting from the three-winding phase shifting transformer for further attenuation of the low-order harmonics. PSCAD/EMTDC simulation is used to assess the steady-state and dynamic behaviours of the proposed system under different operating conditions. Experimental results, obtained using a prototype grid side dual current source inverter (CSI), are presented to validate the proposed technique.
{"title":"Assessment of a wind energy conversion system based on a six-phase permanent magnet synchronous generator with a twelve-pulse PWM current source converter","authors":"I. Abdelsalam, G. Adam, D. Holliday, B. Williams","doi":"10.1109/ECCE-ASIA.2013.6579203","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579203","url":null,"abstract":"The steady-state and dynamic performances of a new high-power variable speed wind-energy conversion system (WECS) that uses a six-phase permanent magnet synchronous generator (PMSG) with twelve-pulse back-to-back pulse width modulated current source converters is assessed. The proposed WECS inherently has all the features of existing systems based on voltage source converters, such as voltage control and fault ride-through capability, but with increased reliability and improved ac side waveform quality, benefiting from the three-winding phase shifting transformer for further attenuation of the low-order harmonics. PSCAD/EMTDC simulation is used to assess the steady-state and dynamic behaviours of the proposed system under different operating conditions. Experimental results, obtained using a prototype grid side dual current source inverter (CSI), are presented to validate the proposed technique.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122043086","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 : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579128
Toshihiko Tanaka, Keiichiro Kato, Shinichi Noriyasu, E. Hiraki, Makoto Koganei, F. Miura, M. Okamoto
This paper proposes a mobile power for the Sectional Compact Emergency Shelter (SCES), which is used for the field hospitals, disaster response offices, and so on under the great disaster. The proposed mobile power consists of the fuel cells (FCs), photovoltaic cells (PVs) and lead-acid batteries. All of the power resources and necessary electrical equipments are constructed in a container car. Therefore, the constructed mobile power is easily moveable and constructive with the SCESs. The FCs can supply power continuously. The PVs are installed on the roof of SCES. The generated power from the PVs is fluctuated by weather conditions. Thus, the lead-acid batteries are installed for levering the difference between the generated power and consumed power in the SCES. The basic principle of the proposed ubiquitous power is discussed in detail, then confirmed by digital computer simulation using PLECS software. The simulation results demonstrate that the ubiquitous power can supply the power to the SCES continuously in winter in Japan. It is concluded that the proposed ubiquitous power is the good solution for power supply of SCES under the great disaster with the SCES.
{"title":"Ubiquitous power for Sectional Compact Emergency Shelter","authors":"Toshihiko Tanaka, Keiichiro Kato, Shinichi Noriyasu, E. Hiraki, Makoto Koganei, F. Miura, M. Okamoto","doi":"10.1109/ECCE-ASIA.2013.6579128","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579128","url":null,"abstract":"This paper proposes a mobile power for the Sectional Compact Emergency Shelter (SCES), which is used for the field hospitals, disaster response offices, and so on under the great disaster. The proposed mobile power consists of the fuel cells (FCs), photovoltaic cells (PVs) and lead-acid batteries. All of the power resources and necessary electrical equipments are constructed in a container car. Therefore, the constructed mobile power is easily moveable and constructive with the SCESs. The FCs can supply power continuously. The PVs are installed on the roof of SCES. The generated power from the PVs is fluctuated by weather conditions. Thus, the lead-acid batteries are installed for levering the difference between the generated power and consumed power in the SCES. The basic principle of the proposed ubiquitous power is discussed in detail, then confirmed by digital computer simulation using PLECS software. The simulation results demonstrate that the ubiquitous power can supply the power to the SCES continuously in winter in Japan. It is concluded that the proposed ubiquitous power is the good solution for power supply of SCES under the great disaster with the SCES.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"403 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123392863","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 : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579090
Chushan Li, Yan Deng, Zibo Lv, Yong Tao, Wuhua Li, Xiangning He, Yousheng Wang
In this paper, an isolated high frequency link AC-AC converter for voltage compensation is proposed to maintain the quality of electric power in modern grid. The proposed converter can achieve arbitrary voltage output without any large electrolytic capacitors. Thus the system is more reliable and less costly compared with the traditional inverter-type solutions. Furthermore, the converter has no line frequency transformer, which also reduces the cost. The control scheme based on sinusoidal wave modulation technology is proposed to achieve better performance on voltage compensation, such as unbalanced voltage harmonics elimination. The converter and system configuration is introduced and the control strategy is described in details. The simulation and experimental results are given to shows the effectiveness of the proposed isolated high frequency link AC-AC converter and sinusoidal wave modulation technology.
{"title":"Insolated high frequency link AC-AC converter based on sinusoidal wave modulation technology for voltage compensation","authors":"Chushan Li, Yan Deng, Zibo Lv, Yong Tao, Wuhua Li, Xiangning He, Yousheng Wang","doi":"10.1109/ECCE-ASIA.2013.6579090","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579090","url":null,"abstract":"In this paper, an isolated high frequency link AC-AC converter for voltage compensation is proposed to maintain the quality of electric power in modern grid. The proposed converter can achieve arbitrary voltage output without any large electrolytic capacitors. Thus the system is more reliable and less costly compared with the traditional inverter-type solutions. Furthermore, the converter has no line frequency transformer, which also reduces the cost. The control scheme based on sinusoidal wave modulation technology is proposed to achieve better performance on voltage compensation, such as unbalanced voltage harmonics elimination. The converter and system configuration is introduced and the control strategy is described in details. The simulation and experimental results are given to shows the effectiveness of the proposed isolated high frequency link AC-AC converter and sinusoidal wave modulation technology.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123572774","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 : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579155
Y. Siwakoti, G. Town
We present a simple and rapid prototyping technique for Field Programmable Gate Array (FPGAs)-based digital controllers for power electronics and motor drives using MATLAB's Simulink and HDL Coder design software. The MATLAB/Simulink models are optimized and converted to target independent, specific and traceable Very High Speed Integrated Circuit Hardware Description Language (VHDL) code for FPGA programming. An example implementation of the space vector pulse width modulation (SVPWM) technique is presented, illustrating the design of a generic 3-phase voltage source inverter (VSI). Simulation and co-simulation, system level design, and verification for rapid prototyping of FPGA-based digital controllers will assist power electronics engineers and researchers to develop and prototypes in a relatively short time by eliminating tedious and time-consuming manual coding. This enables increased productivity and facilitates the development of power electronic controllers with more complex control algorithms.
{"title":"Design of FPGA-controlled power electronics and drives using MATLAB Simulink","authors":"Y. Siwakoti, G. Town","doi":"10.1109/ECCE-ASIA.2013.6579155","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579155","url":null,"abstract":"We present a simple and rapid prototyping technique for Field Programmable Gate Array (FPGAs)-based digital controllers for power electronics and motor drives using MATLAB's Simulink and HDL Coder design software. The MATLAB/Simulink models are optimized and converted to target independent, specific and traceable Very High Speed Integrated Circuit Hardware Description Language (VHDL) code for FPGA programming. An example implementation of the space vector pulse width modulation (SVPWM) technique is presented, illustrating the design of a generic 3-phase voltage source inverter (VSI). Simulation and co-simulation, system level design, and verification for rapid prototyping of FPGA-based digital controllers will assist power electronics engineers and researchers to develop and prototypes in a relatively short time by eliminating tedious and time-consuming manual coding. This enables increased productivity and facilitates the development of power electronic controllers with more complex control algorithms.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131310809","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 : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579115
R. Picas, J. Pou, S. Ceballos, J. Zaragoza, G. Konstantinou, V. Agelidis
This paper proposes an algorithm to calculate the optimal amplitude and phase of the harmonic current components that can be injected in the circulating currents of a modular multilevel converter (MMC) to minimize the capacitor voltage fluctuations. An optimal second harmonic component and an optimal set of second and fourth harmonic components are proposed. Simulation results are obtained in MATLAB/Simulink environment to study the effectiveness of the calculated optimal currents. Selected experimental results have been obtained from an MMC laboratory prototype, testing the effects of the circulating currents. The reported results demonstrate the effectiveness of using a fourth harmonic component in the circulating current, which improves the effect of the second harmonic on reducing the capacitor voltage fluctuations.
{"title":"Optimal injection of harmonics in circulating currents of modular multilevel converters for capacitor voltage ripple minimization","authors":"R. Picas, J. Pou, S. Ceballos, J. Zaragoza, G. Konstantinou, V. Agelidis","doi":"10.1109/ECCE-ASIA.2013.6579115","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579115","url":null,"abstract":"This paper proposes an algorithm to calculate the optimal amplitude and phase of the harmonic current components that can be injected in the circulating currents of a modular multilevel converter (MMC) to minimize the capacitor voltage fluctuations. An optimal second harmonic component and an optimal set of second and fourth harmonic components are proposed. Simulation results are obtained in MATLAB/Simulink environment to study the effectiveness of the calculated optimal currents. Selected experimental results have been obtained from an MMC laboratory prototype, testing the effects of the circulating currents. The reported results demonstrate the effectiveness of using a fourth harmonic component in the circulating current, which improves the effect of the second harmonic on reducing the capacitor voltage fluctuations.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131872819","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 : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579069
J. Stahl, T. Hieke, C. Oeder, T. Duerbaum
This paper describes two basic approaches to calculate the small signal behavior of the resonant LLC-converter. There are no limitations to the underlying time domain model, simulations based on Spice are possible. The theory behind the `Virtual Network Analyzer' and `Sampled-Data Modeling' approach is described in detail. An analysis of the performance and effort to implement these methods is presented as well. The concluding chapter compares these two approaches to the measured control to output transfer function of a chosen converter design.
{"title":"Small signal analysis of the resonant LLC converter","authors":"J. Stahl, T. Hieke, C. Oeder, T. Duerbaum","doi":"10.1109/ECCE-ASIA.2013.6579069","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579069","url":null,"abstract":"This paper describes two basic approaches to calculate the small signal behavior of the resonant LLC-converter. There are no limitations to the underlying time domain model, simulations based on Spice are possible. The theory behind the `Virtual Network Analyzer' and `Sampled-Data Modeling' approach is described in detail. An analysis of the performance and effort to implement these methods is presented as well. The concluding chapter compares these two approaches to the measured control to output transfer function of a chosen converter design.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131682451","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 : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579209
Hongtao Shi, F. Zhuo, Lixiang Hou, Xiaolong Yue, Dong Zhang
Microgrid consists of various micro sources, power electronic devices, and constant power loads (CPLs), because of which, there is a stability problem in such system. Therefore, stability analysis must be taken into consideration regardless of in the design or in the operation of microgrid. In this paper, the method modeling the CPLs in AC system is analyzed. A small signal state-space model of microgrid is developed, which consists of a sub-model of power controller, a sub-model of CPLs, and a sub-model of network and loads. The relationship between the small-signal stability of microgrid and such affecting factors as droop gain, CPLs, and equivalent line impedance is studied. A simulation model of a microgrid operating in islanding mode is developed in PSCAD, to demonstrate the conclusion of eigenvalue analysis.
{"title":"Small-signal stability analysis of a microgrid operating in droop control mode","authors":"Hongtao Shi, F. Zhuo, Lixiang Hou, Xiaolong Yue, Dong Zhang","doi":"10.1109/ECCE-ASIA.2013.6579209","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579209","url":null,"abstract":"Microgrid consists of various micro sources, power electronic devices, and constant power loads (CPLs), because of which, there is a stability problem in such system. Therefore, stability analysis must be taken into consideration regardless of in the design or in the operation of microgrid. In this paper, the method modeling the CPLs in AC system is analyzed. A small signal state-space model of microgrid is developed, which consists of a sub-model of power controller, a sub-model of CPLs, and a sub-model of network and loads. The relationship between the small-signal stability of microgrid and such affecting factors as droop gain, CPLs, and equivalent line impedance is studied. A simulation model of a microgrid operating in islanding mode is developed in PSCAD, to demonstrate the conclusion of eigenvalue analysis.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130420952","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 : 2013-06-03DOI: 10.1109/ECCE-ASIA.2013.6579235
SangCheol Moon, Bong-chul Kim, Shin-Young Cho, G. Moon
This paper presents a theoretical analysis, an optimal design method and experimental results for a wireless power transfer (WPT) system with an intermediate coil. The analytical expression of the DC voltage transfer function is presented and discussed. In a two coil WPT system, which has low coupling coefficient, the intermediate coil boosts the self-inductance and magnetizing inductance of the primary side at around the resonance frequency of the intermediate coil, so that the coupling coefficient is compensated. The coupling coefficient makes the system efficiency increase and induces bi-furcation phenomenon. From the analysis, this paper proposes an optimal design method using the second resonance frequency operation with the bi-furcation phenomenon and presents design procedure for high efficiency. A prototype of the WPT system with the intermediate coil is implemented and experimented to verify the validity of the analysis and the proposed design method. The prototype operates at 100 kHz switching frequency and has an air gap between primary and secondary side of 200mm. An overall system efficiency of 95.57% has been achieved at 6.6kW of output power.
{"title":"Analysis and design of wireless power transfer system with an intermediate coil for high efficiency","authors":"SangCheol Moon, Bong-chul Kim, Shin-Young Cho, G. Moon","doi":"10.1109/ECCE-ASIA.2013.6579235","DOIUrl":"https://doi.org/10.1109/ECCE-ASIA.2013.6579235","url":null,"abstract":"This paper presents a theoretical analysis, an optimal design method and experimental results for a wireless power transfer (WPT) system with an intermediate coil. The analytical expression of the DC voltage transfer function is presented and discussed. In a two coil WPT system, which has low coupling coefficient, the intermediate coil boosts the self-inductance and magnetizing inductance of the primary side at around the resonance frequency of the intermediate coil, so that the coupling coefficient is compensated. The coupling coefficient makes the system efficiency increase and induces bi-furcation phenomenon. From the analysis, this paper proposes an optimal design method using the second resonance frequency operation with the bi-furcation phenomenon and presents design procedure for high efficiency. A prototype of the WPT system with the intermediate coil is implemented and experimented to verify the validity of the analysis and the proposed design method. The prototype operates at 100 kHz switching frequency and has an air gap between primary and secondary side of 200mm. An overall system efficiency of 95.57% has been achieved at 6.6kW of output power.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130603216","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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