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With the emergence of renewable energy power generation, varied kinds of DC-AC inverters based on SPWM control including photovoltaic (PV) inverters have been widely applied in practice. However, high-frequency operations of switches under traditional SPWM (TSPWM) will lead to obvious EMI peaks on switching frequency and its multiples, which may cause serious electromagnetic interference (EMI) problem.
The safety organization technical measurement of AVC put into operation in district sub-transmission network and AVC access control security mechanism based on portrait recognition technology are discussed in this paper. The security organization measures, safety technical measures and operation danger point control are discussed in operation safety organization technical measurement of district sub-transmission...
This paper investigates the compensation and modulation processes of the five-level diode-clamped APF, compensating a three-phase rectified RL load by redundant vectors. From the analysis, a hybrid SVM algorithm allows capacitor voltage balancing. Simulation and experimental results validate the SVM algorithm.
Z-Source inverter is a single-stage power converter capable of either stepping down or stepping up the input dc voltage while converting it to ac form. However, due to the presence of a diode in series with the input source, the power flow is limited to one direction, i.e. from the dc source to the ac side. However, for some energy storage applications such as ultracapacitor banks, battery banks etc...
This paper presents the study on the potential distribution of the ac 1000-kV ultra-high voltage metal-oxide arrester (MOA). Based on the idea of field-circuit combination, the 3-D finite-element method (FEM) and circuit-analytic method are applied to analyze and improve the potential distribution of the 1000-kV MOA. The 3-D FEM is used to obtain the 1000-kV MOA's potential distribution and stray...
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