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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：13633 Amount of downloads：23493
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XIE Xiaofei，LE Jiangyuan，LI Fei
Abstract：The back electromotive force（EMF）increases with the speed of the motor，that is，the faster thespeed，the greater the back EMF，and when running at low speed，the traditional permanent magnet synchronousmotor（PMSM）has no position sensor control technology，and the signal-to-noise ratio of the useful signal is ver...
更多Number of views：94 Amount of downloads：71
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WANG Yiming，XU Po，YANG Ke，XIA Kun，WANG Jingxia
Abstract：A 2 kV photovoltaic grid-connected inverter system based on a five-level active neutral-pointclamped（ANPC-5L）topology was designed for high-power，high-voltage applications. This topology significantlyimproved the system efficiency and reliability by increasing the number of output levels and reducing the sw...
更多Number of views：60 Amount of downloads：71
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DING Jinjin，PENG Bo，ZHANG Feng，MAO Xun
Abstract：To address the large inrush current during the switching of a virtual synchronous generator（VSG）from off-grid to grid-connected，and the stability issues of traditional pre-synchronization schemes，a controlmethod for the phase-locked loop（PLL）pre-synchronization unit to be cut off in non-grid-connected time ...
更多Number of views：60 Amount of downloads：87
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ZHANG Sen，LÜ Zhenhua，LI Qiang
Abstract：After frequency disturbances occur in the external power grid，grid-forming converters（GFCs）areprone to synchronization instability. Analysis shows that adding a low-pass filter（LPF）to the active loop can causeconflicts between the transient stability and frequency stability of GFC，while adding LPF to the re...
更多Number of views：63 Amount of downloads：93
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TIAN Jiahui，QI Xiaoguang，ZHAO Kailin，XU Tianfeng，CHEN Yueqing，LI Linjing
Abstract：Junction temperature is a key indicator of the health status of SiC MOSFET，and real-timemonitoring of junction temperature is an important foundation for condition monitoring，health management andlifetime prediction. The real-time monitoring of junction temperature was investigated based on the on-resistanc...
更多Number of views：58 Amount of downloads：83
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LI Li，PANG Shengyang，ZHONG Ronghao，HUANG Qingdan，ZHANG Liping，ZHANG Yachao
Abstract：With the increase in electricity demand，the rising maintenance costs of substation projects have putpower grid companies under huge market pressure. Traditional cost methods cannot meet the needs of modernmarkets，so the construction of intelligent cost calculation models is the key to realize the modernizat...
更多Number of views：56 Amount of downloads：90
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SUN Xiangfei，LI Ping，DA Guangjun，DOU Xiaochang
Abstract：Due to the large rotational inertia of synchronous machines，frequency changes caused by faults areminimal. In contrast，new energy systems have smaller rotational inertia，which can result in more significantfrequency variations during faults. These larger frequency fluctuations inevitably lead to changes in ...
更多Number of views：61 Amount of downloads：94
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ZHANG Hengrong，ZHENG Youzhuo，DUAN Liwei，LONG Zhi，WENG Di
Abstract：Aiming at the problem of peak-valley difference increase and voltage violation caused by large-scalefluctuation of network power in multi-time sections under high-proportion photovoltaic distribution network，apeak-shaving optimization strategy based on feeder load power control and multi-type resources was ...
更多Number of views：30 Amount of downloads：32
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XU Yang，YUAN Hang，ZENG Haijian，ZHANG Mingmin
Abstract：With the rapid development of new distribution networks，an increasing number of fluctuatingcomponents such as distributed generation，electric vehicles，and photovoltaic systems are being integrated. Thisnecessitates the widespread deployment of distributed energy storage systems to ensure the secure and reli...
更多Number of views：32 Amount of downloads：45
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HUO Tingting，JIA Zhilong，YAN Yong，ZHANG Qing
Abstract：To enhance the trajectory tracking control stability of driverless vehicles under real-world noiseinterference，a vehicle trajectory tracking controller based on model predictive control（MPC）integrated with theextended Kalman filter algorithm（EKF-MPC）was constructed. Firstly，a vehicle dynamics model was esta...
更多Number of views：32 Amount of downloads：24
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NI Jiahua，ZHAO Zhixing，ZHU Yinxiao，MUHAMMAD AJMALAidha，YANG Yongheng
Abstract：Regarding the practical operation of photovoltaic（PV）systems，the photo-electron conversionefficiency and degradation rate of PV modules are easily affected by several factors，e. g. ，irradiance，humidity，and temperature. Subsequently，an efficient framework for assessing power degradation became the cornerston...
更多Number of views：25 Amount of downloads：23
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MAMengyuan，WANG Yang，WANG Lianjie，LIU Jie，ZHANG Lei
Abstract：In the context of China′s "carbon peaking and carbon neutrality goals"，the electrical equipmentmanufacturing industry urgently needs a low-carbon transition. As a key component of electrical equipment，variable-frequency drive（VFD）devices offer significant advantages such as precise regulation，notable energy...
更多Number of views：25 Amount of downloads：25
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WANG Yufei，WANG Bo，JIANG Xiuhong
Abstract：Brushless DC motor has the advantages of high reliability and high efficiency，but due to its ownstructural characteristics and driving characteristics，it will produce large torque pulsation during operation. In lightof this operation problem，an improved direct torque control strategy for brushless DC motor ...
更多Number of views：764 Amount of downloads：3933
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QIU Chen
Abstract：Aiming at the deterioration of position control performance in the position servo system ofpermanent magnet synchronous motor（PMSM）due to internal and external disturbances such as load torquevariation，an optimal position control method was proposed with anti-disturbance capability on the basis of activedis...
更多Number of views：554 Amount of downloads：4099
