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SHI Liguo，LI Yanzhen，LI Yuanfu，GUAN Xuelin，XU Zhigen，ZHANG Mingyuan
Abstract：Three-level neutral-point-clamped（3L-NPC）interconnected converters have been widely used inthe AC-DC hybrid distribution grids due to their superiorities of large capacity and high power quality. However，their working conditions are always with high power，varying load，and limited heat dissipation，etc.，with ...
更多Number of views：1921 Amount of downloads：1798
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KONG Lingqing，HE Shan，DONG Xinsheng，LI Ji，YANG Dingqian，HU Shuai
Abstract: In order to solve the problem of voltage and frequency fluctuations at the grid-connected point of thepermanent magnet wind turbine during high and low voltage ride-through，a virtual synchronous generator（VSG）was proposed to control the grid-side converter to improve the inertia and damping of the permanen...
更多Number of views：1355 Amount of downloads：1797
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CAOWei，GUI Shicheng，HUANG Ruanming，HE Bilun，QIN Huancheng
Abstract: With the expansion of the interconnection scale of the power system，the impedance ratio of thepower grid increased gradually，thereby the breaking capacity of the circuit breaker was affected by the increasingattenuation time constant of the DC component of the short-circuit current .At present，the periodic...
更多Number of views：2561 Amount of downloads：1796
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ZHOU Qun，XIA Haogang，CAI Xiyu，LIN Dong，YAN Tiesheng
Abstract：The amplitudes of strong pull-in current and hold-on current passing through the high speedsolenoid valve were regulated accurately by using hysteresis control to realize pulse width modulation of thevoltage of fast solenoid valve，the duty cycle of the current pulse passing through the high speed solenoid v...
更多Number of views：1069 Amount of downloads：1789
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LI Jiangcheng，CHEN Xiaohua，LI Haitao，ZHU Zhixu
Abstract: Because the current method does not optimize the control parameters of flexible AC transmissiondevice，resulting in unsatisfactory control results，control delay and loss rise，a flexible AC transmission devicecontrol method based on multi-objective optimization was proposed. The basic working principle of fl...
更多Number of views：2025 Amount of downloads：1783
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TIAN Kai，YUAN Yuan，YU Zhibin，JIANG Yida，LI Nan，SONG Peng
Abstract: Three-level neutral-point balance method based on PWM pulse width dynamic regulation wasproposed to realize optimized PWM high-performance closed-loop control and three-level neutral-point balancecontrol of the inverter at low switching frequency. The fundamental current component was extracted from thecur...
更多Number of views：2708 Amount of downloads：1778
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HUANG Xu，LIU Yichao，ZHU Hanqing，LIU Yang
Abstract: The DC fault current calculation method of modular multilevel converter（MMC）is the key to studythe DC fault transient characteristics and isolate the fault point rapidly in VSC-HVDC grid. Firstly，aiming at twotypical MMC fault equivalent models，the topology and the capacitor voltage characteristics when th...
更多Number of views：3449 Amount of downloads：1762
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FANG Biwu，XIAO Liang ，SUN Cheng，CHEN Yiping，XUE Yanjun，ZHANG Deliang
Abstract: In order to improve the absorption capacity of clean energy and make full use of the peak regulationresources of each province，the peak regulation capacity of different types of power sources was studied，and aregional power grid optimization dispatching method considering the mutual aid of peak regulation ...
更多Number of views：3605 Amount of downloads：1760
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ZHOU Wen，YANG Shaobo
Abstract: In the DC microgrid，bus voltage stability is the key to maintain the normal operation of the system.Load switching and distributed micro-source power fluctuations will affect the stability of the DC bus voltage. Tosolve the above problem，a compensation control strategy based on the residual generator was p...
更多Number of views：2529 Amount of downloads：1755
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LI Xin，LI Yundi，JIANG Jie，FU Xueguang
Abstract: In the process of using wireless power transfer（WPT）technology to charge batteries，constant current （CC）-constant voltage（CV）charging mode is adopted to ensure battery life and safety. Therefore，a hybrid topology of series-series（SS）and inductor-inductor-capacitor（LLC）topology was proposed. Based on the SS...
更多Number of views：2783 Amount of downloads：1754
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HUANG Heyao，WANG Luyang，WU Jiaming，BAI Yang，DING Quan，BAI Hongshan
Abstract: Virtual synchronous generator technology can provide virtual inertia for the frequency stability ofmicrogrid，but there are a lot of asymmetric loads in the operation of microgrid. In order to compensate theunbalanced load and output three-phase symmetrical voltage and current，an improved control strategy b...
更多Number of views：3520 Amount of downloads：1754
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SHEN Jiexin，LIU Lei，HE Dandong，LIU Zhenguo，CHU Houguang，MA Hanchao
Abstract: When the current method is used to control the DC transformer of the DC-DC converter，thecontrol efficiency is low，the immunity is poor，and the loss detection error is large. In order to solve the existingproblems，a DC transformer control method based on the SRDAB DC-DC converter was proposed. By analyzingt...
更多Number of views：3004 Amount of downloads：1746
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DAI Feng，CHEN Xuan，WANG Lixian，MA Hongzhong
Abstract: Partial discharge fault diagnosis and location of gas insulated metal enclosed transmission line（GIL）is of great significance for its internal insulation protection. Because GIL is fully enclosed structure，theexisting external detection method is not sensitive to the internal defect detection，so it is unab...
更多Number of views：2534 Amount of downloads：1745
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WEI Wei，GE Qiongxuan，LI Yaohua，ZHAO Lu，ZHANG Bo
Abstract: The integrated gate commutated thyristor（IGCT）is an important element for efficient and reliableoperation of high power traction converters. The stability of high power converter system is significantly affected bythe voltage and current dynamic characteristics of the IGCT device during the turn-on and tur...
更多Number of views：2980 Amount of downloads：1741
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ZHAO Ruochen，MEI Baishan，ZHANG Jinwei，FU Wenbo
Abstract: Active power filter（APF）has become an important measure for harmonic control because it cantrack and compensate reactive power and suppress harmonics adaptively，dynamicly，and in real time. APF wastaken as the research object，and on the premise of verifying the differential flatness of the system，a differen...
更多Number of views：2831 Amount of downloads：1736
