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Island operation of the adjustable speed generation system

机译：可调速发电系统的孤岛运行

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The paper presents a fuel saving, adjustable speed, autonomous generation system providing fixed amplitude and frequency sinusoidal voltage. A permanent magnet generator, driven by a Diesel engine, delivers variable frequency and amplitude AC voltage whereas an AC/DC/AC converter produces demanded voltage. Autonomous generation system is dedicated to the AC microgrid as the basic and continuous source of electricity. It supplies a great number of loads and in a case of short circuit, a tripping switch should instantly disconnect the malfunctioning user and continue power supply action. A very high current is required to disconnect the tripping switch, thus an AC/DC/AC power electronic converter must be significantly over-dimensioned. During the short circuit, the bypass made of parallelly connected thyristors (direct converter type cycloconverter) connects the generator to the power electronic converter's output, thus the variable frequency and amplitude of the generator voltage is parallelly connected to the inverter. The paper describes the adjustable speed generation system equipped in the asynchronous bypass and presents experimental results of the 40 kVA generation unit driven by a Diesel engine.
机译：本文提出了一种节油，可调速，自主发电系统，该系统可提供固定幅度和频率的正弦电压。由柴油机驱动的永磁发电机可提供可变频率和振幅的交流电压，而交流/直流/交流转换器可产生所需的电压。自主发电系统专用于交流微电网，作为基本的连续电力来源。它提供大量负载，并且在发生短路的情况下，跳闸开关应立即断开故障用户的电源并继续供电。断开跳闸开关需要非常大的电流，因此AC / DC / AC电力电子转换器的尺寸必须明显过大。在短路期间，由并联连接的可控硅组成的旁路（直接转换器型循环转换器）将发电机连接到电力电子转换器的输出，因此，发电机电压的可变频率和幅度并联到逆变器。本文介绍了配备在异步旁路中的可调速发电系统，并介绍了由柴油机驱动的40 kVA发电单元的实验结果。

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