Results 21 to 30 of about 46,746 (277)
Multi‐phase VSI DC‐link capacitor considerations
IET Electric Power Applications, 2019 The modelling, control, switching schemes, novel applications, etc. of multi‐phase voltage source inverters (VSIs) have been studied in recent years. While some DC‐link capacitor considerations have been reported and ripple current assessments presented, the impact of these analyses on system design has not previously been quantified.
Zipan Nie, Nigel Schofield
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Virtual inertia with PV inverters using DC-link capacitors [PDF]
2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe), 2016 Soon, virtual inertia for grid control must be covered by photovoltaic inverters. It is suggested to use DC link capacitors for this task. This requires 5 W, 50 J and a capacitor size of about 200 cm3 per installed kW, corresponding to the size of single phase DC link capacitors. It is shown that the additional power ripple (and thus current ripple) is
Waffenschmidt, E, Hui, RSY
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Reliability study on DC-link capacitor in fault states of VSI in elective vehicle
The Journal of Engineering, 2019 DC-input side of the inverter to balance input and output power, eliminate voltage fluctuation, and reduce the voltage spike in the input side. The reliability study on DC-link capacitor under fault state is critical to the safe operation of the whole ...
Fang Yao +3 more
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Robust and generic control of full-bridge modular multilevel converter high-voltage DC transmission systems [PDF]
, 2015 This paper presents the theoretical basis of the control strategy that allows the cell capacitor voltage regulation of the full-bridge modular multilevel converter (FB-MMC) to be controlled independent of its dc link voltage.
Adam, Grain Philip +1 more
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Journal of Control Science and Engineering, 2023 The reliability and economy of dc-link capacitors are important concerns in multiphase drive systems. Due to the parallel connection of several converters, the dc-link capacitors are subjected to a higher RMS current, and the root mean square (RMS ...
Zhigang Zhang +5 more
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Energy Reports, 2022 Direct power smoothing control methods relying on the wind turbine itself have been widely studied to improve wind turbines’ output power quality, and the DC-link voltage control based on the capacitor of the wind power converter is one of them.
Ying Zhu, Zhengzhou Ma, Zhicong Wang
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Active voltage balancing of DC-link electrolytic capacitors
IET Power Electronics, 2008 DC voltage links of three-phase power converters are frequently equipped with a series connection of two electrolytic capacitors because of high voltage level. For such a configuration, usually resistors have to be arranged in parallel to each capacitor in order to balance the partial voltages. These balancing resistors, however, have to be dimensioned
H. Ertl, T. Wiesinger, J.W. Kolar
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Advanced Vector Controller for a Four-Switch Three-Phase Rectifier under Unbalanced Grid Voltage
International Transactions on Electrical Energy Systems, 2022 One of the main challenges of a four-switch three-phase rectifier (FSTPR) is a DC imbalance in capacitor voltages. On the other hand, under unbalanced grid voltage conditions, unbalanced three-phase input current and the DC-link voltage affect the ...
M. Alizadeh Bidgoli, S. Honarbari
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Research on the mechanism of neutral-point voltage fluctuation and capacitor voltage balancing control strategy of three-phase three-level T-type inverter [PDF]
, 2017 In order to solve the neutral-point voltage fluctuation problem of three-phase threelevel T-type inverters (TPTLTIs), the unbalance characteristics of capacitor voltages under different switching states and the mechanism of neutral-point voltage ...
Duan, Shuangming +5 more
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Design and Analysis of a New Evaluation Circuit for Capacitors Used in a High-Power Three-Phase Inverter [PDF]
, 2016 DC-link capacitors in power electronic converters are a major constraint on improvement of power density as well as reliability. Evaluation of the dc-link capacitors in terms of power loss, ageing, and failure rate will play an important role in design ...
Hasegawa Kazunori +2 more
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