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Extension of the reactive power compensation for the pulsed power supply of ASDEX Upgrade

机译:扩展了ASDEX升级版脉冲电源的无功补偿

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ASDEX Upgrade (AUG) is an essential element of the European Medium Sized Tokamak (MST) program towards a fusion power plant. It investigates plasma control and performance from plasma core (e.g. current drive and central heating) up to plasma-wall interaction (e.g. plasma confinement and heat exhaust). In order to improve the possibilities and flexibility of the experiment, the heating (ECRH, ICRF and NBI) and power supply systems will be extended and optimized (Kasemann et al., 2017). For plasma ignition and current ramp up of the poloidal field coils high DC voltage is required. During plasma flattop only the ohmic losses of the copper made coils have to be covered. This partial load operation of the high current converters results in high reactive power demand. The power supply of AUG is based on flywheel generators with limited power and energy. To reduce the current load to the generator, a 90 Mvar static reactive power compensation unit has been installed at flywheel generator EZ4 with 2 x 15 Mvar and 2 x 30 Mvar switched compensation modules.
机译:ASDEX升级(AUG)是欧洲中型托卡马克(MST)计划向核电站的重要组成部分。它研究了从等离子芯(例如电流驱动和中央加热)到等离子-壁相互作用(例如等离子约束和排热)的等离子控制和性能。为了提高实验的可能性和灵活性,将扩展和优化供暖(ECRH,ICRF和NBI)和电源系统(Kasemann等人,2017)。对于等离子体点火和极向场线圈的电流上升,需要高直流电压。在等离子平板印刷期间,仅需覆盖铜制线圈的欧姆损耗。高电流转换器的这种部分负载操作导致高无功功率需求。 AUG的电源基于功率和能量有限的飞轮发电机。为了减少发电机的电流负载,飞轮发电机EZ4上安装了一个90 Mvar静态无功功率补偿单元,带有2 x 15 Mvar和2 x 30 Mvar开关补偿模块。

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