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MA Xiaoliang
Abstract: Several problems and their solutions of high-performance inverter-fed motor drive systems wereintroduced: the features and some matters needing attention of two- closed-loop systems; how to improve speedfollowing performance during starting and breaking and to improve anti-disturb ability by means of predicti...
更多Number of views：16102 Amount of downloads：33671
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MA Xiaoliang
Abstract：The selective harmonic mitigation（SHM）PWM has been successfully used in PWM rectifiers ofhigh power 4-quandrabt 3-level frequency converters. The SHM is an improvement of the well-known selectiveharmonic elimination（SHE）PWM，its aim is not to eliminate selective harmonics as the SHE，only to keep all theharm...
更多Number of views：130 Amount of downloads：107
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HE Junpeng，GONG Fengjun，MENG Huibin，ZHANG Shouliang，PEI Zhiyuan
Abstract：In variable frequency speed control drive system of permanent magnet synchronous motor（PMSM），high power factor（PF）operation of the motor can reduce the reactive power loss of the system，thereby fully utilizing the capacity of inverter. A characteristic equation between d，q-axis current and power factor was...
更多Number of views：105 Amount of downloads：98
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ZHANG Guoyue，ZOU Yang，WANG Haiyan，JIANG Chengbo，XU Ziyan，ZHANG Yun
Abstract：To address the transient power impact of grid-connected converters during the switching betweengrid-following and grid-forming modes，and based on the generation mechanism of this transient power impact，avirtual synchronous generator（VSG）pre-synchronization control strategy for smooth switching was proposed...
更多Number of views：125 Amount of downloads：109
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YAN Wei，WANG Jinmei，GUAN Xuetao，LIAO Yuanhui
Abstract：An optimal control strategy based on extended phase shift（EPS）modulation was adopted toaddress the problems of high current stress，slow dynamic response and input voltage imbalance in the input-seriesoutput-parallel dual active bridge（ISOP-DAB）converter. By constructing a functional relationship between th...
更多Number of views：101 Amount of downloads：108
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ZHAO Changwei，LOU Wei，CHEN Huan，CHEN Yu，YANG Yang，WANG Binjie
Abstract：The deep coupling of high-penetration distributed energy resources with diversified loadssignificantly amplifies source-load stochasticity and complexity. This exacerbates three-phase load imbalance inconventional distribution networks，posing a severe threat to grid stability and power quality. To address ...
更多Number of views：104 Amount of downloads：95
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QUAN Zhiying，CHEN Guanxi，HU Xuanlin，LIN Jiongtao，WANG Yu，CHEN Sizhe，CHEN Bing
Abstract：With the high penetration of wind power integration into the sending-end of DC transmissionsystems，DC sending-end voltage stability issues face new challenges. The DC sending-end voltage stabilityproblems triggered by commutation failures exhibit a "low-first-then-high" variation trend. While reactive powe...
更多Number of views：103 Amount of downloads：87
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ZHANG Xushen，HAO Sipeng
Abstract：To address the voltage over-limit and curtailment issues caused by the high proportion ofphotovoltaic（PV）integration into distribution networks，a grid-forming energy storage preventive voltage controlstrategy based on voltage sensitivity was proposed. The core of the strategy lies in transforming the "pass...
更多Number of views：107 Amount of downloads：90
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LI Ziqian，ZHANG Caijun，WANG Shu，WANG Yiqiu，XU Yin，ZHAO Jinli
Abstract：Short-term load forecasting in power systems is challenging due to its strong volatility and highrandomness. A short-term power load prediction method based on multi-model fusion was proposed，specificallythe WTCN-BiGRU-Attention-CatBoost approach. The original load data was decomposed using variational mod...
更多Number of views：64 Amount of downloads：48
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YANG Xudong，LIU Chunjiang，LIU Yerui，LIU Xiaomin
Abstract：Aiming at the problem of DC bus voltage and power fluctuations caused by the instability ofdistributed photovoltaic output，an improved variable domain fuzzy control strategy was proposed for bidirectionalDC-DC converters in energy storage systems. The method corrected the upper and lower limits of the doma...
更多Number of views：62 Amount of downloads：49
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SONG Zhaozhao，QIN Xiaojun，WEN Yong
Abstract：Photovoltaic（PV）is a typical inverter type distributed power supply with increasing grid-connectedscale，which has a profound impact on the ground fault characteristics of small resistance ground distributionnetwork. Because the signal is weak and difficult to identify when the high resistance ground fault ...
更多Number of views：49 Amount of downloads：44
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CAO Xinhui，HU Qingjun，FENG Yu，LIU Zhijie，WEI Yushan
Abstract：Motors play a critical role in industrial production，yet their long-term operation under complex andvariable conditions poses significant fault challenges. To address this，a convolutional neural network（CNN）architecture with BCA-ISA collaborative optimization was proposed，featuring a three-stage progressiv...
更多Number of views：46 Amount of downloads：35
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WANG Mingyue，JIN Shuhui，ZHANG Ce，ZHANG Dongyang，YU Shouquan
Abstract：Precise speed measurement is very important for motor control system. To address the issue of lowmeasurement accuracy at low speeds when performing fixed-point calculations in incremental encoder，animproved method for speed measurement at low-speed ranges was proposed. According to the calculationcharacter...
更多Number of views：526 Amount of downloads：525
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SU Jinzhi，DAI Qiongjie，ZHANG Jipeng，JIANG Jiacheng，AN Quntao
Abstract：For the issues of increased current loop coupling and decreased control model accuracy in vectorcontrol of permanent magnet synchronous motors（PMSMs）under low carrier ratio，a discrete domain controllerwith active damping based on the discrete-domain control model of permanent magnet synchronous motors wasp...
更多Number of views：506 Amount of downloads：670
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ZHAO Bohan，XIE Jijin，LI Jun，LIU Bin，LAI Junbo
Abstract：A solution based on predictive repetitive control was proposed to address the problem of reducedrobustness in active power filter（APF）systems during grid voltage distortion. Firstly，a mathematical model ofAPF under weak grid conditions was established，and a repetitive factor was introduced to construct a m...
更多Number of views：439 Amount of downloads：495
