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Parameter design and hot seamless transfer of single-phase synchronverter

机译:单相同步器的参数设计和热无缝转换

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This paper reveals the parameter design of single-phase synchronverter (SPSV) and proposes a hot seamless transfer method for SPSV. The design challenge of SPSV lies in its necessary for single-phase power calculation to generate an average value of active/reactive power and the high order system feature caused by the virtual inertia element. The small signal analysis shows that the low-pass filter time constant and SPSV active power loop time constant determine the system damping ratio together. Then we proposed a SPSV parameter design method to provide a proper damping ratio and guarantee system small signal stability. Based on the SPSV parameter design method, a hot seamless-transfer is proposed. During the disconnection and reconnection processes, SPSV can maintain a non-zero power output, which is essential for the critical local loads when the SPSV serves as an uninterrupted power source. The SPSV parameter design method and hot seamless transfer are investigated by simulation. Finally, a 500 W SPSV prototype is built for further demonstration. (C) 2018 Elsevier B.V. All rights reserved.
机译:本文揭示了单相同步变频器(SPSV)的参数设计,并提出了一种用于SPSV的热无缝转换方法。 SPSV的设计挑战在于其必须进行单相功率计算,以生成有功/无功功率的平均值以及由虚拟惯性元素引起的高阶系统特征。小信号分析表明,低通滤波器时间常数和SPSV有功功率环路时间常数共同决定了系统的阻尼比。然后我们提出了一种SPSV参数设计方法,以提供适当的阻尼比并保证系统的小信号稳定性。基于SPSV参数设计方法,提出了一种热无缝转移。在断开和重新连接过程中,SPSV可以保持非零功率输出,当SPSV用作不间断电源时,这对于关键的局部负载至关重要。通过仿真研究了SPSV参数设计方法和热无缝传输。最后,构建了一个500 W SPSV原型,用于进一步的演示。 (C)2018 Elsevier B.V.保留所有权利。

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