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在对称电压凹陷期间，谐波减少和穿越可调速度驱动器

摘要

对高质量、可靠电力的需求不断增长，扭曲负载的数量不断增加，可能会导致客户和公用事业公司对电力质量的认识提高。当今最常见的电能质量问题是电压下降、谐波失真和低功率因数。在任何电压跌落穿越系统的重要性、效率、规模和成本之间进行权衡是选择最佳拓扑结构的核心。此外，为任何给定的系统选择最佳拓扑取决于中断的性质。例如，如果主要中断事件是电压跌落;不是完全停机，来自高级硬件修改ASD的类别的贯穿系统是首选。反之亦然，如果主要事件是完全停电，那么来自储能设备类别的具有穿越机制的ASD是最好的，以保持长时间的穿越。本文将研究一种先进硬件改造类ASD的电压跌落贯穿问题。该系统利用升压变换器和超级电容作为储能装置，在对称电压跌落时补偿直流链路电压。升压转换被激活来补偿直流链路的参考电压和实际电压之间的差异，一旦它接收到电压跌落检测系统的信号。 An additional advantage of using boost converter is its ability to improve the shape of the supply currents waveforms during the steady state normal operation. Thus lower total harmonic distortion (THD) can be obtained. Based on the designed topology, simulation model in MATLAB 7.5 (Sim Power Block set) has been developed for voltage unbalance conditions with supercapacitor as an energy storage device. The designed control technique is modeled, simulated and successfully implemented in the laboratory. The extensive simulation results are provided to validate the proposed system.

s.s. Deswal博士，Rajveer Mittal博士，L. P. Singh, Jitender Lather

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