Efficiency estimation method of three-wired AC to DC line transfer
نویسندگان
چکیده
منابع مشابه
A Novel Multilevel Ac–Dc-Ac Converters with Improved Efficiency
Multilevel inverter technology has emerged recently as a very important alternative in the area of high power medium-voltage control and also for improving the total harmonic distortion by reducing the harmonics. Generally, the poor quality of voltage and current of a conventional inverter fed induction machine is obtained due to the presence of harmonics and hence there is a significant level ...
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The ac-dc transfer standard is one of the basic electrical standards, by which the ac voltage and ac current are deduced from their dc counterparts in the frequency range between 10 Hz and 1 MHz [1,2]. The dc voltage standards are established using a Josephson voltage standard with uncertainty better than 10-7 [3-5]. The ac voltage standard in the frequency range 10 Hz to 1 MHz are derived from...
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A novel online capacitance estimation method for a DC-link capacitor in a three-phase AC/DC/AC PWM converter is prepared. At no load, a controlled AC current with a lower frequency than the line frequency is injected into the input side, which then causes AC voltage ripples at the DC output side. By extracting the AC voltage and current components on the DC output side using digital filters, th...
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That the large-scale integration of new renewables requires a substantial increase in transmission capacity seems to be an undoubted fact today. As new rights-of-way for transmission lines are increasingly difficult to obtain, alternatives are discussed to increase transmission capacity within the existing rights-of-way. One possibility to do so is the conversion of existing AC lines to DC. In ...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2018
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/1015/3/032137