Capacitors for converter valves
Transient current distribution among elements in metallized film …
The metalized film capacitors (MFC) in converter valves are subjected to high-frequency currents under the action of power electronic switching, which will cause …
Valve section capacitance for 660KV HVDC converter valves
Download Citation | Valve section capacitance for 660KV HVDC converter valves | HVDC (High Voltage Direct Current) transmission is considered as a mature technology to meet the demand for the bulk ...
Crystallization Morphology-Dependent Breakdown Strength of Polypropylene Films for Converter Valve Capacitor …
In this paper, a novel modification method of polypropylene (PP) films is proposed in the field of metallized film capacitors for converter valves. An organic crystallization accelerator with good dispersion improves the micromorphology of PP films. The doping content of the organic crystallization accelerator is optimized based on …
Crystallization Morphology-Dependent Breakdown Strength of Polypropylene Films for Converter Valve Capacitor …
In this paper, a novel modification method of polypropylene (PP) films is proposed in the field of metallized film capacitors for converter valves. An organic crystallization accelerator ...
Capacitor Voltage Ripple Control Strategy of Lightweight Modular …
A low ripple voltage of submodule (SM) capacitors is helpful in reducing the capacitor volume in converter valves, thereby minimizing the volume and weight of …
Crystallization Morphology-Dependent Breakdown Strength of …
In this paper, a novel modification method of polypropylene (PP) films is proposed in the field of metallized film capacitors for converter valves. An organic crystallization accelerator …
Reliability Modeling and Analysis on Metallized Film Capacitors …
Metallized film capacitor''s (MFC''s) reliability directly affects the stable operation of MMC valve. Conventional reliability assessment method based on data statistics is limited. This paper studies the reliability modeling of MFC considering aging for the application condition of MMC valve. Firstly, the temperature field and electric field model of MFC is …
Research on key technologies in ±1100 kV ultra-high …
The key design points of ±1100 kV converter transformers, smoothing reactors, converter valves, and wall bushings are researched …
Capacitor Commutated Converters for HVDC Systems
Capacitor Commutated Converters for HVDC Systems The thyristor valves are air-insulated at atmospheric pressure and installed in modular valve housings. Each valve …
Reactors for LCC and VSC HVDC Converter Stations
3.1 Filter ReactorsFilter reactors at converter stations for HVDC systems are usually connected with capacitors and resistors in filter circuits to provide a specific filter response. See the "AC Side Harmonics and Filters for LCC and VSC HVDC Converter Stations" and the "DC Side Harmonics and Filters for LCC and VSC HVDC Converter …
Study on Discharge Characteristics Between Damping Capacitors in Converter Valve …
stable operation of the converter valve. Therefore, it is urgent to study the gap insulation characteristics of damping capacitors in converter valves at different alti-tudes. This article focuses on the damping capacitor gap inside the converter
The Study of Thin Film Capacitor on Loss and Current Distribution
The corestructure of inverter DC-link bus film capacitor is too complex, it is more urgent to build the simulation model oncapacitor core loss. Thus, in this paper, the current distribution and the loss distribution of thin film capacitor metal plate were analyzed, and then the mathematical expressions with current distribution and loss distribution were …
Transient current distribution among elements in metallized film …
The large-capacitance metalized film capacitor (MFC) has been widely used in energy conversion equipment represented by converter valves due to its unique self-healing properties and good stability. Taking the modular multilevel converter as an …
Capacitor Commutated Converters for HVDC Systems
Capacitor Commutated Converters for HVDC Systems The thyristor valves are air-insulated at atmospheric pressure and installed in modular valve housings. Each valve module contains two single valves, i.e. three modules for …
Transient current distribution among elements in metallized film capacitor for converter valves …
The metalized film capacitors (MFC) in converter valves are subjected to high-frequency currents under the action of power electronic switching, which will cause large differences in currents among capacitor elements inside MFC and seriously affect the stability of MFC. In this paper, experiments were conducted to measure the current waveforms among 90 …
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