Pub Date : 2015-07-01DOI: 10.1109/TPEL.2014.2347974
Jiaxin Yuan, Jianbing Pan, Wenli Fei, Baichao Chen, J. Jia
In this paper, an immune algorithm is developed for optimization of the harmonic performance of a single-phase inverter under a novel dead-time elimination PWM control strategy. The proposed scheme is based on the division of reference current and constraining switching states, and executes the conventional dead-time elimination in most of the reference current fundamental period but switches to the novel dead-time elimination around the zero crossing point. Meanwhile, the presented algorithm employs the immune approach as the search method for finding the best optimal control sequence to minimize the objective function (OB) of the Total Harmonic Distortion (THD) of the output voltage waveforms. Additionally, an experimental platform based on DSP and FPGA is built. The simulation and experimental results verify the best dead-time elimination control sequences generated by IA compared with the existing conventional control strategies, not only effectively and safely eliminate the effect of dead-time, but also significantly reduce the output waveforms of THD and increase the amplitude of the fundamental voltage.
{"title":"An immune-algorithm-based dead-time elimination PWM control strategy in a single-phase inverter","authors":"Jiaxin Yuan, Jianbing Pan, Wenli Fei, Baichao Chen, J. Jia","doi":"10.1109/TPEL.2014.2347974","DOIUrl":"https://doi.org/10.1109/TPEL.2014.2347974","url":null,"abstract":"In this paper, an immune algorithm is developed for optimization of the harmonic performance of a single-phase inverter under a novel dead-time elimination PWM control strategy. The proposed scheme is based on the division of reference current and constraining switching states, and executes the conventional dead-time elimination in most of the reference current fundamental period but switches to the novel dead-time elimination around the zero crossing point. Meanwhile, the presented algorithm employs the immune approach as the search method for finding the best optimal control sequence to minimize the objective function (OB) of the Total Harmonic Distortion (THD) of the output voltage waveforms. Additionally, an experimental platform based on DSP and FPGA is built. The simulation and experimental results verify the best dead-time elimination control sequences generated by IA compared with the existing conventional control strategies, not only effectively and safely eliminate the effect of dead-time, but also significantly reduce the output waveforms of THD and increase the amplitude of the fundamental voltage.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"122 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114114484","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 : 2013-05-27DOI: 10.1109/APEC.2013.6520612
Mo Wei, L. P. Chiang, Jin Chi, Wang Peng, F. Blaabjerg
Embedded/Asymmetrical embedded Z-source inverters were proposed to maintain smooth input current/voltage across the dc source and within the impedance network, remain the shoot-through feature used to boost up the dc-link voltage without adding bulky filter at input side. This paper introduces a class of transformer based asymmetrical embedded Z-source inverters which keep the smooth input current and voltage while achieving enhanced voltage boost capability. The presented inverters are verified by laboratory prototypes experimentally.
{"title":"Six transformer based asymmetrical embedded Z-source inverters","authors":"Mo Wei, L. P. Chiang, Jin Chi, Wang Peng, F. Blaabjerg","doi":"10.1109/APEC.2013.6520612","DOIUrl":"https://doi.org/10.1109/APEC.2013.6520612","url":null,"abstract":"Embedded/Asymmetrical embedded Z-source inverters were proposed to maintain smooth input current/voltage across the dc source and within the impedance network, remain the shoot-through feature used to boost up the dc-link voltage without adding bulky filter at input side. This paper introduces a class of transformer based asymmetrical embedded Z-source inverters which keep the smooth input current and voltage while achieving enhanced voltage boost capability. The presented inverters are verified by laboratory prototypes experimentally.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125483638","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 : 2013-05-27DOI: 10.1109/APEC.2013.6520754
E. Goenaga, J. Ferrieux, J. Barbaroux
In this paper, a contactless power transfer system is presented for piezoelectric actuators that need to be supplied by a low frequency signal. A concatenation of full bridge PWM inverter, resonant capacitor, inductive rotating transformer which works at low frequencies and piezoelectric actuator is modeled. The behavior of the system is analyzed in function of the variation at transformer's coupling coefficient and resonant capacitor. Then, an optimization tool is presented where magnetic and power properties of the system are optimized. Piezoelectric actuators will also have a DC component at the output voltage, so an embedded electronic system, that creates an offset minimizing the volume, is shown. Experimental results obtained at the prototype are finally exposed and compared to the simulations.
{"title":"Contactless power transfer system for high power piezoelectric actuators in aeronautical applications","authors":"E. Goenaga, J. Ferrieux, J. Barbaroux","doi":"10.1109/APEC.2013.6520754","DOIUrl":"https://doi.org/10.1109/APEC.2013.6520754","url":null,"abstract":"In this paper, a contactless power transfer system is presented for piezoelectric actuators that need to be supplied by a low frequency signal. A concatenation of full bridge PWM inverter, resonant capacitor, inductive rotating transformer which works at low frequencies and piezoelectric actuator is modeled. The behavior of the system is analyzed in function of the variation at transformer's coupling coefficient and resonant capacitor. Then, an optimization tool is presented where magnetic and power properties of the system are optimized. Piezoelectric actuators will also have a DC component at the output voltage, so an embedded electronic system, that creates an offset minimizing the volume, is shown. Experimental results obtained at the prototype are finally exposed and compared to the simulations.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132833080","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 : 2013-05-27DOI: 10.1109/APEC.2013.6520514
A. Virtanen, H. Tuusa, J. Aho
This paper analyzes the performance and power losses of 2.1 MVA conventional STATCOMs and STATCOMs with energy storage (ESTATCOM), in electric arc furnace applications. The research was conducted by computer simulations with Matlab Simulink software. According to the simulation results load compensation reduces the required current rating of the supply grid transformer and cables by approximately 30 %, and the maximum drop of the reference point (RP) voltage to 2 % compared to 15 % caused by the non-compensated case. The conventional STATCOM attenuates the RP voltage flicker by a factor of 5.9 and the ESTATCOM by a factor of 11.7. The voltage source converters (VSC) of both compensators could be designed for the same rated current, despite the active power compensation capabilities of the ESTATCOM. The system losses are minimized when a 3-level VSC is used instead of a 2-level VSC, and the compensating device is connected to the lowest studied network voltage of 690 V. The energy storage system losses are minimized when the energy storage is connected to the dc link using two separate DC/DC converters instead of a large single converter. This occurs because the system converters can be implemented with IGBTs of lowest rated voltage.
{"title":"Performance analysis of conventional STATCOMs and STATCOMs with energy storage in electric arc furnace applications","authors":"A. Virtanen, H. Tuusa, J. Aho","doi":"10.1109/APEC.2013.6520514","DOIUrl":"https://doi.org/10.1109/APEC.2013.6520514","url":null,"abstract":"This paper analyzes the performance and power losses of 2.1 MVA conventional STATCOMs and STATCOMs with energy storage (ESTATCOM), in electric arc furnace applications. The research was conducted by computer simulations with Matlab Simulink software. According to the simulation results load compensation reduces the required current rating of the supply grid transformer and cables by approximately 30 %, and the maximum drop of the reference point (RP) voltage to 2 % compared to 15 % caused by the non-compensated case. The conventional STATCOM attenuates the RP voltage flicker by a factor of 5.9 and the ESTATCOM by a factor of 11.7. The voltage source converters (VSC) of both compensators could be designed for the same rated current, despite the active power compensation capabilities of the ESTATCOM. The system losses are minimized when a 3-level VSC is used instead of a 2-level VSC, and the compensating device is connected to the lowest studied network voltage of 690 V. The energy storage system losses are minimized when the energy storage is connected to the dc link using two separate DC/DC converters instead of a large single converter. This occurs because the system converters can be implemented with IGBTs of lowest rated voltage.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115908164","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 : 2013-03-17DOI: 10.1109/APEC.2013.6520666
Zhigang Dang, J. A. Abu Qahouq
This paper presents a power inductor with toroid core that utilizes a Permanent Magnet (PM) in its gap (PMTPI) in order to increase saturation current while keeping the same size and inductance. After discussing the PMTPI structure, the results of ANSYS®/Maxwell® physical model simulation results for a design example are presented. The design example considered in this paper is for a toroid-core power inductor with dimensions of 12.5mm × 12.5mm × 6.5mm and inductance of ~592nH. The saturation current is increased from 14A in the conventional design to 28A in the proposed design.
{"title":"Permanent Magnet toroid power inductor with increased saturation current","authors":"Zhigang Dang, J. A. Abu Qahouq","doi":"10.1109/APEC.2013.6520666","DOIUrl":"https://doi.org/10.1109/APEC.2013.6520666","url":null,"abstract":"This paper presents a power inductor with toroid core that utilizes a Permanent Magnet (PM) in its gap (PMTPI) in order to increase saturation current while keeping the same size and inductance. After discussing the PMTPI structure, the results of ANSYS®/Maxwell® physical model simulation results for a design example are presented. The design example considered in this paper is for a toroid-core power inductor with dimensions of 12.5mm × 12.5mm × 6.5mm and inductance of ~592nH. The saturation current is increased from 14A in the conventional design to 28A in the proposed design.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116883874","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 : 2013-03-17DOI: 10.1109/APEC.2013.6520202
M. Mosa, O. Ellabban, A. Kouzou, H. Abu-Rub, J. Rodríguez
This paper presents a Model Predictive Control (MPC) algorithm applied to a Quasi-Z-source inverter (qZSI). This control is based mainly on the measurement of the qZSI capacitor voltage and the AC load currents. These measured values are used to predict the future values of the capacitor voltage and load current. This task is based on the determination of each possible voltage vector generated by the qZSI which can ensure the tracking of the capacitor voltage and the output current references. This control is implemented under MATLAB/SIMULINK program; the obtained results are validated with real time simulation using dSPACE 1103 ControlDesk. The real time simulation results have been provided for principle validation.
{"title":"Model Predictive Control applied for Quasi-Z-source inverter","authors":"M. Mosa, O. Ellabban, A. Kouzou, H. Abu-Rub, J. Rodríguez","doi":"10.1109/APEC.2013.6520202","DOIUrl":"https://doi.org/10.1109/APEC.2013.6520202","url":null,"abstract":"This paper presents a Model Predictive Control (MPC) algorithm applied to a Quasi-Z-source inverter (qZSI). This control is based mainly on the measurement of the qZSI capacitor voltage and the AC load currents. These measured values are used to predict the future values of the capacitor voltage and load current. This task is based on the determination of each possible voltage vector generated by the qZSI which can ensure the tracking of the capacitor voltage and the output current references. This control is implemented under MATLAB/SIMULINK program; the obtained results are validated with real time simulation using dSPACE 1103 ControlDesk. The real time simulation results have been provided for principle validation.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127123207","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 : 2013-03-17DOI: 10.1109/APEC.2013.6520584
Y. Singh, K. Viswanathan, R. Naik, J. Sabate, R. Lai
DC-DC series resonant converter operating in Discontinuous Conduction Mode (DCM) offers advantages in terms of low switching losses, high power density, and low control complexity. The low switching loss feature is lost when the converter operation shifts from DCM to Continuous Conduction Mode (CCM). This paper presents an in-depth analysis of such a converter operating in DCM and derives two boundary conditions under which the converter shifts to CCM. The fixed-frequency phase-shifted pulse width modulation is used to adjust the effective duty cycle and regulate the output voltage. Steady state analysis for above resonant frequency operation is also presented in this paper. The derived boundary conditions aid the design of the converter using which DCM operation and hence the soft switching feature is ensured at all operating points. Limits of these boundary conditions are verified using simulation and experimental results on a prototype converter.
{"title":"Analysis and control of phase-shifted series resonant converter operating in discontinuous mode","authors":"Y. Singh, K. Viswanathan, R. Naik, J. Sabate, R. Lai","doi":"10.1109/APEC.2013.6520584","DOIUrl":"https://doi.org/10.1109/APEC.2013.6520584","url":null,"abstract":"DC-DC series resonant converter operating in Discontinuous Conduction Mode (DCM) offers advantages in terms of low switching losses, high power density, and low control complexity. The low switching loss feature is lost when the converter operation shifts from DCM to Continuous Conduction Mode (CCM). This paper presents an in-depth analysis of such a converter operating in DCM and derives two boundary conditions under which the converter shifts to CCM. The fixed-frequency phase-shifted pulse width modulation is used to adjust the effective duty cycle and regulate the output voltage. Steady state analysis for above resonant frequency operation is also presented in this paper. The derived boundary conditions aid the design of the converter using which DCM operation and hence the soft switching feature is ensured at all operating points. Limits of these boundary conditions are verified using simulation and experimental results on a prototype converter.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127268194","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 : 2013-03-17DOI: 10.1109/APEC.2013.6520498
Yongsu Han, Jung-Ik Ha
This paper proposes a drive system different from the conventional one using an inverter and rectifier or a back-to-back converter. It consists of a machine and an inverter without any input filter. Even though it has the simple structure, it can control the torque, speed and power quality of the connected grid simultaneously in variable speed. In the proposed system, the stator of the machine is directly connected to a single phase grid and the rotor is to a three phase inverter isolated from any power sources. The inverter can be integrated on the rotor or connected to it through the slip rings. The integrated configuration has merits in footprints and maintenances. In this paper, the possible operation areas in this topology are analyzed. The power balance of the rotor isolated from the grid is considered for the operation. The inverter of the rotor side can control the torque based on the vector control method while the rotor power is regulated. The power factor for the grid and shape of the grid current can be also controlled. The experimental results present the feasibility of the proposed system.
{"title":"A doubly-fed induction machine and the control in a single-phase grid connection","authors":"Yongsu Han, Jung-Ik Ha","doi":"10.1109/APEC.2013.6520498","DOIUrl":"https://doi.org/10.1109/APEC.2013.6520498","url":null,"abstract":"This paper proposes a drive system different from the conventional one using an inverter and rectifier or a back-to-back converter. It consists of a machine and an inverter without any input filter. Even though it has the simple structure, it can control the torque, speed and power quality of the connected grid simultaneously in variable speed. In the proposed system, the stator of the machine is directly connected to a single phase grid and the rotor is to a three phase inverter isolated from any power sources. The inverter can be integrated on the rotor or connected to it through the slip rings. The integrated configuration has merits in footprints and maintenances. In this paper, the possible operation areas in this topology are analyzed. The power balance of the rotor isolated from the grid is considered for the operation. The inverter of the rotor side can control the torque based on the vector control method while the rotor power is regulated. The power factor for the grid and shape of the grid current can be also controlled. The experimental results present the feasibility of the proposed system.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124738550","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 : 2013-03-17DOI: 10.1109/APEC.2013.6520200
R. Haque, A. Kowal, J. Ewanchuk, A. Knight, J. Salmon
A dual pwm inverter drive operating an open-winding induction motor can be an attractive motor-drive system when operated from a dc battery source. Operating one of the inverters using a floating dc-link capacitor provides two main functions: reactive voltage support for the main bridge connected to the dc battery voltage source; voltage boosting to increase the motor terminal voltage. The latter feature eliminates the requirement to use a separate dc-dc converter to provide a voltage boost. The resultant drive system can provide several benefits such as: lowering the average battery current by operating the main bridge at unity power factor; improving the motor torque and efficiency over a wide operating speed range; compensation for battery voltage fluctuations; lowering the motor harmonic losses; elimination of common-mode circulating currents. This paper describes a pwm control scheme for the two inverters to regulate the floating bridge capacitor voltage over the entire dynamic speed range of the motor, whilst also providing the desired motor demand voltage. Experimental results are used to verify both the operation of the motor-drive system and the regulation of the floating capacitor voltage. Experimental results using an induction motor load confirm the practical feasibility of the motor-drive system.
{"title":"PWM control of a dual inverter drive using an open-ended winding induction motor","authors":"R. Haque, A. Kowal, J. Ewanchuk, A. Knight, J. Salmon","doi":"10.1109/APEC.2013.6520200","DOIUrl":"https://doi.org/10.1109/APEC.2013.6520200","url":null,"abstract":"A dual pwm inverter drive operating an open-winding induction motor can be an attractive motor-drive system when operated from a dc battery source. Operating one of the inverters using a floating dc-link capacitor provides two main functions: reactive voltage support for the main bridge connected to the dc battery voltage source; voltage boosting to increase the motor terminal voltage. The latter feature eliminates the requirement to use a separate dc-dc converter to provide a voltage boost. The resultant drive system can provide several benefits such as: lowering the average battery current by operating the main bridge at unity power factor; improving the motor torque and efficiency over a wide operating speed range; compensation for battery voltage fluctuations; lowering the motor harmonic losses; elimination of common-mode circulating currents. This paper describes a pwm control scheme for the two inverters to regulate the floating bridge capacitor voltage over the entire dynamic speed range of the motor, whilst also providing the desired motor demand voltage. Experimental results are used to verify both the operation of the motor-drive system and the regulation of the floating capacitor voltage. Experimental results using an induction motor load confirm the practical feasibility of the motor-drive system.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123441111","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 : 2013-03-17DOI: 10.1109/APEC.2013.6520720
Cong Zheng, Rui Chen, Hongbo Ma, Baifeng Chen, Chien-Liang Chen, Wensong Yu, J. Lai, E. Faraci
In this paper, a 5-kW photovoltaic (PV) inverter with more than 99% peak efficiency is presented. The inverter utilizes two coupled inductors in one resonant pole to ensure the zero-voltage switching (ZVS) for main switches, and zero-current switching (ZCS) for auxiliary switches. Due to the favorable cooling and ease of fabrication characteristics, PCB planar magnetics are employed as the coupled resonant inductors. In addition, super-junction MosFETs with low on-state resistance is selected in order to reduce the inverter conduction loss. The optimization design of planar resonant inductors is described and verified by finite element analysis (FEA) software. During the experiment on the 5-kW inverter prototype, the temperature rise of planar inductors is below 15°C without fan cooling at full load.
{"title":"An optimization design for 5-kW centralized PV inverter to achieve 99% efficiency","authors":"Cong Zheng, Rui Chen, Hongbo Ma, Baifeng Chen, Chien-Liang Chen, Wensong Yu, J. Lai, E. Faraci","doi":"10.1109/APEC.2013.6520720","DOIUrl":"https://doi.org/10.1109/APEC.2013.6520720","url":null,"abstract":"In this paper, a 5-kW photovoltaic (PV) inverter with more than 99% peak efficiency is presented. The inverter utilizes two coupled inductors in one resonant pole to ensure the zero-voltage switching (ZVS) for main switches, and zero-current switching (ZCS) for auxiliary switches. Due to the favorable cooling and ease of fabrication characteristics, PCB planar magnetics are employed as the coupled resonant inductors. In addition, super-junction MosFETs with low on-state resistance is selected in order to reduce the inverter conduction loss. The optimization design of planar resonant inductors is described and verified by finite element analysis (FEA) software. During the experiment on the 5-kW inverter prototype, the temperature rise of planar inductors is below 15°C without fan cooling at full load.","PeriodicalId":256756,"journal":{"name":"2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125258476","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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