2017 IEEE Applied Power Electronics Conference and Exposition (APEC)最新文献

Shaping switching waveforms in a 650 V GaN FET bridge-leg using 6.7 GHz active gate drivers 使用6.7 GHz有源栅极驱动器在650v GaN场效应管桥腿中塑造开关波形

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-05-18 DOI: 10.1109/APEC.2017.7930970

Jeremy J. O. Dalton, Jianjing Wang, H. Dymond, Dawei Liu, D. Pamunuwa, B. Stark, N. McNeill, S. Hollis

{"title":"Shaping switching waveforms in a 650 V GaN FET bridge-leg using 6.7 GHz active gate drivers","authors":"Jeremy J. O. Dalton, Jianjing Wang, H. Dymond, Dawei Liu, D. Pamunuwa, B. Stark, N. McNeill, S. Hollis","doi":"10.1109/APEC.2017.7930970","DOIUrl":"https://doi.org/10.1109/APEC.2017.7930970","url":null,"abstract":"The application of active gate driving to 40 V GaN FETs has previously been shown to reduce ringing and EMI-generating spectral content in the switch-node voltage waveforms. This paper, for the first time, shows active gate driving applied to 650 V GaN FETs, and the shaping of device voltages and currents during switching transients. A custom integrated active gate driver is used, which can dynamically vary its output resistance from 0.12 to 64 Ω, with a 150 ps timing resolution. At 200 V DC link and 10 A load current, a significant degree of control over the active-switch drain current and switch-node voltage is demonstrated, for both buck and boost mode operation. The current overshoot and ringing in the power waveforms due to circuit parasitics are actively reduced and the voltage oscillations in the DC link are damped. The timing of resistance sequences is shown to be critical to the success of active shaping methods, thus justifying the unparalleled 150 ps resolution of the driver. Under continuous operation and at reduced ratings of 100 V and 2 A load current the significant control of the switch node voltage and voltage spectra is also demonstrated. The switching delay is reduced, and parts of the spectrum are reduced by up to 9 dB, equivalent to the effect of tripling the gate resistance but without any reduction in the overall switching speed.","PeriodicalId":201289,"journal":{"name":"2017 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129754196","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}

引用次数: 13

High frequency, single/dual phases, large AC/DC signal power characterization for two phase on-silicon coupled inductors 两相硅耦合电感的高频、单/双相、大交流/直流信号功率特性

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-05-18 DOI: 10.1109/APEC.2017.7931048

C. Femandez, Z. Pavlović, S. Kulkami, P. McCloskey, C. O'Mathúna

引用次数: 3

A new adaptive output voltage controller for fast battery charger 一种新型快速电池充电器自适应输出电压控制器

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-05-17 DOI: 10.1109/APEC.2017.7931176

Kai-Hui Chen, Tsomg-Juu Liang, Bin-Kun Huang

引用次数: 1

Systematic design of grid-current-based active damping for grid-connected LCL filters 并网LCL滤波器基于电网电流的主动阻尼系统设计

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-05-17 DOI: 10.1109/APEC.2017.7931073

M. Gaafar, G. M. Dousoky, E. Ahmed, M. Shoyama

引用次数: 1

Improved dynamics in DC-DC converters for IoT applications with repetitive load profiles using self-calibrated preemptive current control 使用自校准的抢占式电流控制，改善了物联网应用中具有重复负载概况的DC-DC转换器的动态特性

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-05-17 DOI: 10.1109/APEC.2017.7931177

D. K. Li, Z. Gong, M. Rose, H. Bergveld, O. Trescases

{"title":"Improved dynamics in DC-DC converters for IoT applications with repetitive load profiles using self-calibrated preemptive current control","authors":"D. K. Li, Z. Gong, M. Rose, H. Bergveld, O. Trescases","doi":"10.1109/APEC.2017.7931177","DOIUrl":"https://doi.org/10.1109/APEC.2017.7931177","url":null,"abstract":"This paper presents a novel approach to improve the dynamic response of inductive dc-dc converters in applications having repetitive load profiles. In many Internet-of-Things (IoT) applications, such as wireless sensor networks (WSN), the load current profile has a periodic nature, and is therefore predictable by the power management circuits. This unique nature is exploited by the proposed Preemptive Concurrent Controller (PCC) to achieve a dynamic response superior to the theoretical limits of time-optimal control. The preemptive controller ramps up the inductor current prior to the occurrence of a load step and reduces the required output capacitance. The non-inverting buck-boost converter is used in this work and operates with a freewheeling mode that avoids output voltage overshoot during the preemptive inductor current ramp. Two hysteric control loops operate concurrently to define the freewheeling interval. A simple digital calibration scheme is demonstrated to extract timing and amplitude features from a load current profile in order to optimize the timing of the preemptive current reference in the next cycle. Freewheeling is thus minimized to increase system efficiency. The PCC and associated load profile learning algorithm is experimentally verified and uses 10× less capacitance compared to the time-optimal control benchmark.","PeriodicalId":201289,"journal":{"name":"2017 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124653446","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}

引用次数: 4

Modulation strategy for wide-range ZVS operation of a three-level three-phase dual active bridge dc-dc converter 三电平三相双有源桥式dc-dc变换器大范围ZVS工作的调制策略

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-05-17 DOI: 10.1109/APEC.2017.7931178

N. Baars, J. Everts, C. Wijnands, E. Lomonova

引用次数: 6

Buck-type wide-range dimmable LED driver buck型宽范围可调光LED驱动器

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-05-17 DOI: 10.1109/APEC.2017.7930907

Po-Yen Lin, T. Liang, Che-wei Chang, Kai-Hui Chen, Bin-Kun Huang

{"title":"Buck-type wide-range dimmable LED driver","authors":"Po-Yen Lin, T. Liang, Che-wei Chang, Kai-Hui Chen, Bin-Kun Huang","doi":"10.1109/APEC.2017.7930907","DOIUrl":"https://doi.org/10.1109/APEC.2017.7930907","url":null,"abstract":"For many LED applications, the dimming control is required in saving the energy consumptions. However, the wide-range dimming cannot be achieved due to the minimum on-time and switching frequency at low dimming level. In this paper, a buck-type wide-range dimmable LED driver is designed and implemented. According to the different percentage of dimming, the buck converter can operate in QR mode, frequency limitation with the valley switching, frequency reduction mode, and burst mode with the primary-side control scheme. By changing the parameters of the PI controller, the LED current can still be estimated precisely in burst mode. Therefore, the ideally linear wide-range dimming can be achieved by the proposed primary-side control scheme. Finally, the buck-type LED driver with the universal input voltages 90–264 Vrms applied to 42 V/ 8 W LED lamps is implemented. The dimming range is from 100 % to 1 %. The line regulations at 100 % and 1 % dimming are both lower than 5 %. The power factor is higher than 0.96 and the total harmonic distortion is lower than 20 % in the universal input voltage range. The highest efficiency is 94.67%.","PeriodicalId":201289,"journal":{"name":"2017 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129214378","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}

引用次数: 7

Robustness of SiC MOSFET under avalanche conditions 雪崩条件下SiC MOSFET的鲁棒性

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-03-27 DOI: 10.1109/APEC.2017.7931015

Ilyas Dchar, Marion Zolkos, C. Buttay, H. Morel

引用次数: 19

Hybrid Si IGBT-SiC Schottky diode modules for medium to high power applications 混合Si IGBT-SiC肖特基二极管模块，用于中到高功率应用

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-03-26 DOI: 10.1109/APEC.2017.7931127

Leif Amber, K. Haddad

引用次数: 13

Equivalency analysis of primary series- and series-parallel-compensated contactless resonant converter 一次串并联补偿非接触谐振变换器等效性分析

2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2017-03-26 DOI: 10.1109/APEC.2017.7931164

Wei Gao, Qianhong Chen, Y. Geng, X. Ren, Siu-Chung Wong

引用次数: 2