Pub Date : 2018-05-24DOI: 10.23919/IPEC.2018.8507373
Moo-Hyun Park, J. Baek, Jung-Kyu Han, C. Lim, G. Moon
This paper proposes an interleaved totem-pole bridgeless boost power factor correction (PFC) converter employing an additional inductor which has small switching loss. The main problem of conventional interleaved totem-pole bridgeless boost PFC converter is large switching loss due to the hard switching operation. And that problem becomes more serious in high switching frequency operation. In proposed converter, by utilizing the energy of additional inductor, zero-voltage-switching (ZVS) operation of the switches is achieved. Also, by using phase-shifting control between two interleaved PFC units, the flowing current on additional inductor can be controlled and only proper magnitude of current is generated. As a result, the proposed converter has higher efficiency than conventional converter. The feasibility of the proposed converter is confirmed with 50Hz, 230Vrms input and 1.6kW (400V / 4A) output prototype.
{"title":"ZVS Interleaved Totem-pole Bridgeless PFC Converter with Phase-shifting Control","authors":"Moo-Hyun Park, J. Baek, Jung-Kyu Han, C. Lim, G. Moon","doi":"10.23919/IPEC.2018.8507373","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507373","url":null,"abstract":"This paper proposes an interleaved totem-pole bridgeless boost power factor correction (PFC) converter employing an additional inductor which has small switching loss. The main problem of conventional interleaved totem-pole bridgeless boost PFC converter is large switching loss due to the hard switching operation. And that problem becomes more serious in high switching frequency operation. In proposed converter, by utilizing the energy of additional inductor, zero-voltage-switching (ZVS) operation of the switches is achieved. Also, by using phase-shifting control between two interleaved PFC units, the flowing current on additional inductor can be controlled and only proper magnitude of current is generated. As a result, the proposed converter has higher efficiency than conventional converter. The feasibility of the proposed converter is confirmed with 50Hz, 230Vrms input and 1.6kW (400V / 4A) output prototype.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"3 1","pages":"3533-3537"},"PeriodicalIF":0.0,"publicationDate":"2018-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91169784","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 : 2018-05-24DOI: 10.23919/IPEC.2018.8507360
Jung-Kyu Han, G. Moon
A conventional phase-shifted full bridge (PSFB) converter has several advantages for high power applications since it has full-bridge structure and all switching devices can achieve soft switching. However, it has large circulating current in primary side when it operates with small duty-ratio resulting in large conduction loss at primary switches. Also, since rectifier diodes have a voltage ringing between parasitic components, it has large voltage stress. To overcome above problems, a new PSFB converter which eliminates the circulating current and voltage ringing using coupled output inductor is proposed in this paper. As a result, the proposed converter reduces a conduction loss at primary side and can use small voltage rating diode in secondary rectifier. To verify the effect and feasibility, prototype converters are experimented with a 320-400V input voltage and 56V/12.8A output specification.
{"title":"Circulating Current-less Phase-Shifted Full-Bridge Converter With New Rectifier Structure","authors":"Jung-Kyu Han, G. Moon","doi":"10.23919/IPEC.2018.8507360","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507360","url":null,"abstract":"A conventional phase-shifted full bridge (PSFB) converter has several advantages for high power applications since it has full-bridge structure and all switching devices can achieve soft switching. However, it has large circulating current in primary side when it operates with small duty-ratio resulting in large conduction loss at primary switches. Also, since rectifier diodes have a voltage ringing between parasitic components, it has large voltage stress. To overcome above problems, a new PSFB converter which eliminates the circulating current and voltage ringing using coupled output inductor is proposed in this paper. As a result, the proposed converter reduces a conduction loss at primary side and can use small voltage rating diode in secondary rectifier. To verify the effect and feasibility, prototype converters are experimented with a 320-400V input voltage and 56V/12.8A output specification.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"14 1","pages":"4054-4058"},"PeriodicalIF":0.0,"publicationDate":"2018-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72753212","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 : 2018-05-24DOI: 10.23919/IPEC.2018.8507457
Jung-Kyu Han, Jong-Woo Kim, Seung-Hyun Choi, J. Lai, G. Moon
A conventional asymmetrical half-bridge (AHB) converter is a good candidate for low power applications such as TV and LED driver. It has small number of components and all switching devices have soft swtiching capability. However, when the AHB converter is designed with wide input voltage range, it has a large offset current in transformer which increases size of the transformer and core loss. Also, DC-offset current worsens ZVS condition of one of the half-bridge switches resulting in low efficiency in light load condition. To overcome above problems, a new asymmetrical half-bridge converter with coupled inductor rectifier (CIR) is proposed in this paper. Since two capacitors of the new rectifier equalize an average current flowing through secondary rectifier, the proposed converter doesn’t have DC-offset current. Therefore, the proposed converter reduces size of the transformer and can increase efficiency. Experiment is implemented with a 250V-400V input voltage variation and 50V/200W output specifications.
{"title":"Asymmetrical Half-Bridge Converter With Zero DC-offset Current in Transformer Using New Rectifier Structure","authors":"Jung-Kyu Han, Jong-Woo Kim, Seung-Hyun Choi, J. Lai, G. Moon","doi":"10.23919/IPEC.2018.8507457","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507457","url":null,"abstract":"A conventional asymmetrical half-bridge (AHB) converter is a good candidate for low power applications such as TV and LED driver. It has small number of components and all switching devices have soft swtiching capability. However, when the AHB converter is designed with wide input voltage range, it has a large offset current in transformer which increases size of the transformer and core loss. Also, DC-offset current worsens ZVS condition of one of the half-bridge switches resulting in low efficiency in light load condition. To overcome above problems, a new asymmetrical half-bridge converter with coupled inductor rectifier (CIR) is proposed in this paper. Since two capacitors of the new rectifier equalize an average current flowing through secondary rectifier, the proposed converter doesn’t have DC-offset current. Therefore, the proposed converter reduces size of the transformer and can increase efficiency. Experiment is implemented with a 250V-400V input voltage variation and 50V/200W output specifications.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"105 1","pages":"4049-4053"},"PeriodicalIF":0.0,"publicationDate":"2018-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80475627","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 : 2018-05-23DOI: 10.23919/IPEC.2018.8507990
C. Lim, Yeonho Jeong, Keon-Woo Kim, F. Kang, G. Moon
Magnetic energy harvesting is a promising technology for a self-powered sensor, because it rarely depends on the weather condition. In order to increase the power density, maximizing the harvested power is important. In this paper, the analysis for power harvesting according to varying primary current is prevailed, and a new design guideline of primary voltage for maximizing harvested power is suggested. This analysis is distinct in that the effect of magnetizing inductance was taken into the consideration. To confirm the validity of this paper, the experiments were prevailed with a prototype of 4 ~ 7 Arms primary current.
{"title":"A High-Efficiency Power Supply from Magnetic Energy Harvesters","authors":"C. Lim, Yeonho Jeong, Keon-Woo Kim, F. Kang, G. Moon","doi":"10.23919/IPEC.2018.8507990","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507990","url":null,"abstract":"Magnetic energy harvesting is a promising technology for a self-powered sensor, because it rarely depends on the weather condition. In order to increase the power density, maximizing the harvested power is important. In this paper, the analysis for power harvesting according to varying primary current is prevailed, and a new design guideline of primary voltage for maximizing harvested power is suggested. This analysis is distinct in that the effect of magnetizing inductance was taken into the consideration. To confirm the validity of this paper, the experiments were prevailed with a prototype of 4 ~ 7 Arms primary current.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"32 1","pages":"2376-2379"},"PeriodicalIF":0.0,"publicationDate":"2018-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81229839","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 : 2018-05-23DOI: 10.23919/IPEC.2018.8507582
Dong-Kwan Kim, Young-Dal Lee, Sang-Hyun Ha, Yujin Jang, G. Moon
The performance of Li-ion battery’s cell is significantly reduced under subzero temperature. In this paper, a self-preheating method for Li-ion battery using battery impedance estimator is presented. For battery impedance estimation, no information of the actual battery’s internal impedance is required, so that the proposed method can be easily and quickly adapted to the commercial Li-ion batteries. In addition, the proposed method includes the optimization of charging/discharging current and preheating frequency using the battery impedance estimator. Moreover, based on DC- discharging estimation in the proposed method, the preheating procedure is automatically shut. Using the presented method the self-preheating method can be widely adapted to commercial applications. The feasibility of the proposed control strategy is verified by the simulation and experimental results.
{"title":"Self-preheating Method for Li-ion Battery Using Battery Impedance Estimator","authors":"Dong-Kwan Kim, Young-Dal Lee, Sang-Hyun Ha, Yujin Jang, G. Moon","doi":"10.23919/IPEC.2018.8507582","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507582","url":null,"abstract":"The performance of Li-ion battery’s cell is significantly reduced under subzero temperature. In this paper, a self-preheating method for Li-ion battery using battery impedance estimator is presented. For battery impedance estimation, no information of the actual battery’s internal impedance is required, so that the proposed method can be easily and quickly adapted to the commercial Li-ion batteries. In addition, the proposed method includes the optimization of charging/discharging current and preheating frequency using the battery impedance estimator. Moreover, based on DC- discharging estimation in the proposed method, the preheating procedure is automatically shut. Using the presented method the self-preheating method can be widely adapted to commercial applications. The feasibility of the proposed control strategy is verified by the simulation and experimental results.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"19 1","pages":"3466-3470"},"PeriodicalIF":0.0,"publicationDate":"2018-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85920522","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 : 2018-05-23DOI: 10.23919/IPEC.2018.8507766
J. Baek, Jae-Kuk Kim, Jae-Bum Lee, Moo-Hyun Park, G. Moon
In the standby stage of the server power supply, the flyback converter has been widely used due to its simple structure and low cost. However, it suffers from high voltage stress on the primary switch and large transformer size. Thus, the flyback converter in the standby stage degrades the efficiency and power density of the server power supply. To relieve these drawbacks, this paper presents a new standby structure where the standby stage is integrated with the boost PFC stage. In the proposed standby structure, since the primary side of the flyback converter is integrated into the boost PFC stage, the proposed standby structure can eliminate high voltage stress and large transformer. Furthermore, the proposed standby structure helps the boost PFC stage to achieve soft switching operation. Therefore, the proposed standby structure can improve the efficiency and power density of the server power supply. The validity of the proposed standby structure is confirmed by a prototype with 90-264Vrms AC line, 750W main output, and 12V/2A standby output.
{"title":"A New Standby Structure Integrated with Boost PFC Converter for Server Power Supply","authors":"J. Baek, Jae-Kuk Kim, Jae-Bum Lee, Moo-Hyun Park, G. Moon","doi":"10.23919/IPEC.2018.8507766","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507766","url":null,"abstract":"In the standby stage of the server power supply, the flyback converter has been widely used due to its simple structure and low cost. However, it suffers from high voltage stress on the primary switch and large transformer size. Thus, the flyback converter in the standby stage degrades the efficiency and power density of the server power supply. To relieve these drawbacks, this paper presents a new standby structure where the standby stage is integrated with the boost PFC stage. In the proposed standby structure, since the primary side of the flyback converter is integrated into the boost PFC stage, the proposed standby structure can eliminate high voltage stress and large transformer. Furthermore, the proposed standby structure helps the boost PFC stage to achieve soft switching operation. Therefore, the proposed standby structure can improve the efficiency and power density of the server power supply. The validity of the proposed standby structure is confirmed by a prototype with 90-264Vrms AC line, 750W main output, and 12V/2A standby output.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"43 1","pages":"3100-3106"},"PeriodicalIF":0.0,"publicationDate":"2018-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88047234","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 : 2018-05-22DOI: 10.23919/IPEC.2018.8507858
Yujin Jangs, Keon-Woo Kim, Moo-Hyun Park, Nayoung Lee, G. Moon
This paper proposes a novel structural health monitoring (SHM) system for wireless sensor node (WSN) that enables power and physical data of WSN to be transmitted bi-directionally. The main point is system overview, the analysis, and implementation of proto-type SHM system. Conventional method of data transmission for SHM system is cable based sensor or WSN with battery. These result in high maintenance cost. To improve them, a novel SHM system with wireless power and data transfer (WPDT) is proposed. The proposed system has a WSN, primary control switch, load variation switch, and a modulation circuit for data transmission. It detects packetized digital data of the WSN by using load variation switch with WPDT method. Then, these demodulation circuit converts them to WSN data. Therefore, the proposed SHM system can reduce maintenance cost of the smart bridge by eliminating the communication module for data transmission. The WPDT method is implemented to assess validity. Wireless power is transferred to the WSN with a distance of 300 mm under concrete structure with steel rebar array. In addition, data transmission is properly conducted between primary resonator side and secondary resonator side with a 500bps data rate. Finally, a proto-type SHM system for the WSN has been built to experimentally evaluate the effectiveness. The results show that it operates the WSN by using wireless power and enables the WSN to transmit physical data of a smart bridge for damaged or undamaged conditions.
{"title":"A Novel Structural Health Monitoring System with Wireless Power and Bi-directional Data Transfer","authors":"Yujin Jangs, Keon-Woo Kim, Moo-Hyun Park, Nayoung Lee, G. Moon","doi":"10.23919/IPEC.2018.8507858","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507858","url":null,"abstract":"This paper proposes a novel structural health monitoring (SHM) system for wireless sensor node (WSN) that enables power and physical data of WSN to be transmitted bi-directionally. The main point is system overview, the analysis, and implementation of proto-type SHM system. Conventional method of data transmission for SHM system is cable based sensor or WSN with battery. These result in high maintenance cost. To improve them, a novel SHM system with wireless power and data transfer (WPDT) is proposed. The proposed system has a WSN, primary control switch, load variation switch, and a modulation circuit for data transmission. It detects packetized digital data of the WSN by using load variation switch with WPDT method. Then, these demodulation circuit converts them to WSN data. Therefore, the proposed SHM system can reduce maintenance cost of the smart bridge by eliminating the communication module for data transmission. The WPDT method is implemented to assess validity. Wireless power is transferred to the WSN with a distance of 300 mm under concrete structure with steel rebar array. In addition, data transmission is properly conducted between primary resonator side and secondary resonator side with a 500bps data rate. Finally, a proto-type SHM system for the WSN has been built to experimentally evaluate the effectiveness. The results show that it operates the WSN by using wireless power and enables the WSN to transmit physical data of a smart bridge for damaged or undamaged conditions.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"10 1","pages":"1562-1566"},"PeriodicalIF":0.0,"publicationDate":"2018-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85625344","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 : 2018-05-20DOI: 10.23919/IPEC.2018.8507489
Mizuki Nakajima, Yuuki Uchida, N. Satoh, H. Yamamoto
Power semiconductor devices progress towards high withstand voltages using wide-band-gap semiconductor materials, and parallel integration enabled by microfabrication techniques. We achieved nanoscale observation of power semiconductor device using a scanning probe microscope based on the combination of atomic force microscopy, Kelvin probe force microscopy, and scanning capacitance force microscopy, which provided high spatial resolution and sensitivity. The nanoscale observations were performed through stability control using the frequency-modulation (FM) detection method under a vacuum pressure environment, with and without bias voltage applied to the power semiconductor device.
{"title":"Nanoscale investigation of the power MOSFET by the AFM/KFM/SCFM","authors":"Mizuki Nakajima, Yuuki Uchida, N. Satoh, H. Yamamoto","doi":"10.23919/IPEC.2018.8507489","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507489","url":null,"abstract":"Power semiconductor devices progress towards high withstand voltages using wide-band-gap semiconductor materials, and parallel integration enabled by microfabrication techniques. We achieved nanoscale observation of power semiconductor device using a scanning probe microscope based on the combination of atomic force microscopy, Kelvin probe force microscopy, and scanning capacitance force microscopy, which provided high spatial resolution and sensitivity. The nanoscale observations were performed through stability control using the frequency-modulation (FM) detection method under a vacuum pressure environment, with and without bias voltage applied to the power semiconductor device.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"11 1","pages":"2750-2755"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73692595","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 : 2018-05-20DOI: 10.23919/IPEC.2018.8506666
P. Thummala, D. Yelaverthi, R. Zane, Z. Ouyang, M. Andersen
This paper presents design of an isolated high-step-down DC-DC converter based on a class-DE power stage, operating at a 10 MHz switching frequency using enhancement mode Gallium Nitride (GaN) transistors. The converter operating principles are discussed, and the power stage design rated for 20 W is presented for a step-down from 200-300 V to 0-28 V. Commercially available magnetic materials were explored and the high-frequency (HF) resonant inductor and transformer designs using a low-loss Fair-Rite type 67 material are presented. Finite element simulations have been performed to estimate the AC resistances of magnetics at 10 MHz. Experimental results are presented at 12 W, 254 V to 22 V on a laboratory prototype operating at 10 MHz. At 20 W the experimental prototype achieved an efficiency of 85.2%.
{"title":"A 10 MHz GaNFET Based Isolated High Step-Down DC-DC Converter","authors":"P. Thummala, D. Yelaverthi, R. Zane, Z. Ouyang, M. Andersen","doi":"10.23919/IPEC.2018.8506666","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8506666","url":null,"abstract":"This paper presents design of an isolated high-step-down DC-DC converter based on a class-DE power stage, operating at a 10 MHz switching frequency using enhancement mode Gallium Nitride (GaN) transistors. The converter operating principles are discussed, and the power stage design rated for 20 W is presented for a step-down from 200-300 V to 0-28 V. Commercially available magnetic materials were explored and the high-frequency (HF) resonant inductor and transformer designs using a low-loss Fair-Rite type 67 material are presented. Finite element simulations have been performed to estimate the AC resistances of magnetics at 10 MHz. Experimental results are presented at 12 W, 254 V to 22 V on a laboratory prototype operating at 10 MHz. At 20 W the experimental prototype achieved an efficiency of 85.2%.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"32 1","pages":"4066-4073"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80059368","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 : 2018-05-20DOI: 10.23919/IPEC.2018.8507880
Huawei Yuan, Sinan Li, Wenlong Qi, Siew-Chong Tan, S. Y. Ron Hui
There is a growing demand for high power density, high efficiency, and high reliability (H3) single-phase power converters in power electronics applications. These H3 converters, which are equipped only with very small energy storage components, involve large-signal operation and exhibit highly coupled and nonlinear characteristics. Existing controller designs for these converters are based on small-signal models, and may not attain satisfactory dynamic performance and robustness. This paper presents a nonlinear control method based on the technique of input-output feedback linearization and the automatic-power-decoupling control strategy for the H3 converters. The controller not only achieves global system stability and enhanced dynamic performance over existing control solutions, but also enables us to exploit the full potential of H3 single-phase converters, thereby providing new application opportunities. Simulations and experiments are carried out to demonstrate the feasibilities and to verify the performance of the proposed control.
{"title":"Opportunities for Performance Improvement of Single-Phase Power Converters through Enhanced Automatic-Power-Decoupling Control","authors":"Huawei Yuan, Sinan Li, Wenlong Qi, Siew-Chong Tan, S. Y. Ron Hui","doi":"10.23919/IPEC.2018.8507880","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507880","url":null,"abstract":"There is a growing demand for high power density, high efficiency, and high reliability (H3) single-phase power converters in power electronics applications. These H3 converters, which are equipped only with very small energy storage components, involve large-signal operation and exhibit highly coupled and nonlinear characteristics. Existing controller designs for these converters are based on small-signal models, and may not attain satisfactory dynamic performance and robustness. This paper presents a nonlinear control method based on the technique of input-output feedback linearization and the automatic-power-decoupling control strategy for the H3 converters. The controller not only achieves global system stability and enhanced dynamic performance over existing control solutions, but also enables us to exploit the full potential of H3 single-phase converters, thereby providing new application opportunities. Simulations and experiments are carried out to demonstrate the feasibilities and to verify the performance of the proposed control.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"85 1","pages":"889-895"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80936247","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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