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Reasonable Rated Voltage of High and Medium Power Adjustable-Speed Drives for Energy Saving

Ma Xiaoliang

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 80-84

Abstract: The rated voltage of most of the motors in the power range is 10 kV because the power supply is 10 kVlot of power electronic devices in series and its cost is high and reliability is poorer than lower voltageto the existence of input transformer of the inverter, it is not necessary to ask for that the rated voltageof the motor and inverter is the same as power supply, i. e. a lower rated voltage can be used for the

Keywords： high and medium power     adjustable-speed drives for energy saving     reasonable rated voltage     low voltageinverters     medium voltage inverters     by-pass    

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Research of an Interleaved Low-Voltage/High-Current DC-DC Converter

Wang Ping,Sun Xu,Song Liangyu

Strategic Study of CAE 2005, Volume 7, Issue 4,   Pages 59-63

Abstract: most high-performance microprocessors were lower than that of the previous ones and the research of low-voltage

Keywords： low-voltage/high-current DC-DC converter     current-doublers     interleaved    

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A collaborative assembly for low-voltage electrical apparatuses Research Article

Huanpei LYU, Libin ZHANG, Dapeng TAN, Fang XU,lvhuanpei@nbufe.edu.cn,lbz@zjut.edu.cn,tandapeng@zjut.edu.cn,fangx@zjut.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 6,   Pages 890-905 doi: 10.1631/FITEE.2100423

Abstract: es (LVEAs) have many workpieces and intricate geometric structures, and the assembly process is rigid and labor-intensive, and has little balance. The assembly process cannot readily adapt to changes in assembly situations. To address these issues, a is proposed. Based on the requirements of , a colored Petri net (CPN) model is proposed to analyze the performance of the interaction and self-government of robots in . Also, an algorithm (AFPA) is presented to realize the assembly planning and of robots in the of LVEAs. Then an (AQGA) is developed to optimize the assembly process. Lastly, taking a two-pole circuit-breaker controller with leakage protection (TPCLP) as an assembly instance, comparative results show that the is cost-effective and flexible in LVEA assembly. The distribution of resources can also be optimized in the assembly. The assembly robots can interact dynamically with each other to accommodate changes that may occur in the LVEA assembly.

Keywords： Low-voltage electrical apparatus     Collaborative assembly     Artificial potential field based planning    

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Parameter identification of interconnected power system frequency after trip-out of high voltage transmission

Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 386-393 doi: 10.1007/s11708-014-0323-9

Abstract: Accurate modeling and parameters of high voltage (HV) grid are critical for stability research of system

Keywords： high voltage (HV) grid     frequency stability parameter identification     primary frequency regulation (PFR    

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Recent advances toward high voltage, EC-free electrolytes for graphite-based Li-ion battery

Tong Zhang, Elie Paillard

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 577-591 doi: 10.1007/s11705-018-1758-z

Abstract: In the last years, many alternative electrolytes, aiming at allowing high voltage battery operation,Thus, we review here the high voltage, EC-free alternative electrolytes, focusing on those allowing the

Keywords： lithium-ion     electrolyte     solid electrolyte interphase     additives     high voltage     graphite    

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Bistable electrowetting device with non-planar designed controlling electrodes for display applications Regular Papers-Research Articles

Han ZHANG, Xue-lei LIANG

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 9,   Pages 1289-1295 doi: 10.1631/FITEE.1800167

Abstract: Bistable electrowetting display (EWD) is a promising low-power electronic paper technology, where powerThe novel electrode design realizes a lower driving voltage and a higher contrast between two stable

Keywords： Bistable electrowetting     Non-planar     Controlling electrodes     Low voltage     High contrast    

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Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 943-955 doi: 10.1007/s11708-021-0793-5

Abstract: the wind turbines (WTs) are controlled by a new type of converter control strategy referred to as the voltage

Keywords： weak grids     voltage source (VS) control     wind turbine (WT)     stabilization control     wind farm     inertial    

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Development and advances in modular multilevel converter based HVDC projects in China

Frontiers of Engineering Management   Pages 183-189 doi: 10.1007/s42524-022-0248-7

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Keywords： high voltage direct current     power converter     power systems     renewable energy     ultra-high voltage    

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Study on Reliability of Low-voltage Circuit Breakers and Residual Current Protective Electrical Apparatus

Lu J ianguo

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 36-40

Abstract:

This paper expounded the importance of reliability study on low-voltage circuit-breakers and residualThen this paper discussed the failure modes of low-voltage circuit-breakers and residual current operatedat the first time, which provided a kind of theory and method for the reliability research work of low-voltage

Keywords： failure modes     reliability indexes     reliability compliance test plan    

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Cluster voltage control method for “Whole County” distributed photovoltaics based on improved differential

Frontiers in Energy   Pages 782-795 doi: 10.1007/s11708-023-0905-8

Abstract: However, the high penetration rate of DPVs has brought problems such as voltage violation and power qualityThe traditional centralized control method of the distribution network has the problem of low efficiencyTo address the problems, this paper proposes a cluster voltage control method for distributed photovoltaicFirst, it partitions the distribution network into clusters, and different clusters exchange terminal voltageof the distribution network, and maximizes the consumption capacity of DPVs based on qualified voltage

Keywords： distributed photovoltaics (DPVs)     cluster partitioning     improved differential evolution algorithm     voltage    

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power quality conditioner based on a three-level NPC inverter using fuzzy control techniques for all voltage

Salim CHENNAI,M-T BENCHOUIA

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 221-239 doi: 10.1007/s11708-014-0317-7

Abstract: The proposed UPQC is capable of mitigating source current harmonics and compensate all voltage disturbancessuch as voltage sags, swells, unbalances and harmonics.The DC voltage is maintained constant using proportional integral voltage controller.performances of the proposed UPQC system are evaluated in terms of power factor correction, mitigation of voltageor current harmonics and all other voltage disturbances compensation using Matlab-Simulink software

Keywords： inverter     unified power quality conditioner (UPQC)     current harmonics mitigation     fuzzy logic controller     voltage    

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Experimental study of pollution effect on the behavior of high voltage insulators under alternative current

Hani BENGUESMIA, Nassima M’ZIOU, Ahmed BOUBAKEUR

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 213-221 doi: 10.1007/s11708-017-0479-1

Abstract: paper, the impact of the conductivity and the distribution of pollution on the behavior of the high voltagedifferent conductivities for a discontinuous distribution of the pollution on the insulator under an AC voltageFurthermore, the influence of the pollution on the flashover voltage and the leakage current is studied

Keywords： insulator     circular model     artificial pollution     flashover     leakage current     discontinuous pollution     high voltage    

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Topology-independent end-to-end learning model for improving the voltage profile in microgrids-integrated

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 211-227 doi: 10.1007/s11708-022-0847-3

Abstract: operation of power distribution networks is challenged by the issues of multiple power flow directions and voltageAccordingly, an efficient voltage control strategy is needed to ensure voltage security against ever-changingIn this paper, we propose a novel data-driven voltage profile improvement model, denoted as system-wideand decision-making optimization in sequence, the proposed end-to-end model determines the optimal voltage

Keywords： end-to-end learning     microgrids     voltage profile improvement     generative adversarial network    

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Experimental investigation and comparative study of inter-turn short-circuits and unbalanced voltage

Fatima BABAA, Abdelmalek KHEZZAR, Mohamed el kamel OUMAAMAR

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 271-278 doi: 10.1007/s11708-013-0258-6

Abstract: However, small unbalance in the supply voltage and/or in the machine structure that exists in any realIn this case, it is too difficult to distinguish between the current harmonics due to the supply voltageprovide the relationship between the inter-turn short-circuits in the stator winding and the supply voltage

Keywords： induction machines     fault indicator     inter-turn short-circuit fault     unbalance supply voltage    

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Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks

Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER

Frontiers in Energy 2017, Volume 11, Issue 2,   Pages 135-145 doi: 10.1007/s11708-017-0472-8

Abstract: Germany’s energy transition triggered a rapid and unilateral growth of renewable energy sources (RES) in the electricity sector. With increasing shares of intermittent RES, overcapacities during periods of strong wind and photovoltaic electricity generation occur. In the face of insufficient transmission capacities, due to an inhibited network extension, the electricity generation has to be curtailed. This curtailment of RES leads to economic losses and could be avoided through flexible loads. As an option to cope with those problems, the technologies of power-to-gas (PtG) and power-to-heat (PtH) are presented in this paper. First, the alkaline electrolyzer (AEL), polymer electrolyte membrane electrolyzer (PEMEL), and solid oxide electrolyzer cell (SOEC) are investigated regarding their operational parameters. Second, the electric boiler, electrode heating boiler, and heat pumps are considered. Ultimately, the network-supporting abilities and the potential to provide ancillary services, such as control power, load sequence operation, cold start and part load capability, are compared among one another.

Keywords： power-to-gas     power-to-heat     flexible loads     ancillary services     coherent energy systems    

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Title Author Date Type Operation

Reasonable Rated Voltage of High and Medium Power Adjustable-Speed Drives for Energy Saving

Ma Xiaoliang

Journal Article

Research of an Interleaved Low-Voltage/High-Current DC-DC Converter

Wang Ping,Sun Xu,Song Liangyu

Journal Article

A collaborative assembly for low-voltage electrical apparatuses

Huanpei LYU, Libin ZHANG, Dapeng TAN, Fang XU,lvhuanpei@nbufe.edu.cn,lbz@zjut.edu.cn,tandapeng@zjut.edu.cn,fangx@zjut.edu.cn

Journal Article

Parameter identification of interconnected power system frequency after trip-out of high voltage transmission

Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG

Journal Article

Recent advances toward high voltage, EC-free electrolytes for graphite-based Li-ion battery

Tong Zhang, Elie Paillard

Journal Article

Bistable electrowetting device with non-planar designed controlling electrodes for display applications

Han ZHANG, Xue-lei LIANG

Journal Article

Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions

Journal Article

Development and advances in modular multilevel converter based HVDC projects in China

Journal Article

Study on Reliability of Low-voltage Circuit Breakers and Residual Current Protective Electrical Apparatus

Lu J ianguo

Journal Article

Cluster voltage control method for “Whole County” distributed photovoltaics based on improved differential

Journal Article

power quality conditioner based on a three-level NPC inverter using fuzzy control techniques for all voltage

Salim CHENNAI,M-T BENCHOUIA

Journal Article

Experimental study of pollution effect on the behavior of high voltage insulators under alternative current

Hani BENGUESMIA, Nassima M’ZIOU, Ahmed BOUBAKEUR

Journal Article

Topology-independent end-to-end learning model for improving the voltage profile in microgrids-integrated

Journal Article

Experimental investigation and comparative study of inter-turn short-circuits and unbalanced voltage

Fatima BABAA, Abdelmalek KHEZZAR, Mohamed el kamel OUMAAMAR

Journal Article

Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks

Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER

Journal Article