Novel All-Active Hybrid Converters for Power Quality Applications in Power Systems

由于越来越多的非线性负载，以及对电压波形畸变、起伏和电磁干扰（EMI）敏感的负载，Mohan电能质量已成为电力行业关注的主要问题。有许多瞬间电压下降导致电机驱动器跳闸的例子，非线性负载导致灯闪烁，等等。这些问题可以通过快速静态无功补偿器和有源滤波器来消除。但是它们的成本和缺乏足够的性能限制了它们的应用。提出的研究目标是开发一种新型的全有源混合变换器，以解决电能质量问题，最初适用于4.16 kV和7.2 kV等中等配电电压，在效率，成本，性能和EMI（电磁干扰）方面表现出色，同时不牺牲可靠性。＊＊＊

9629805 Mohan Power Quality has lately become a major concern to the electric utility industry due to increasing number of nonlinear loads, simultaneously with loads which are sensitive to voltage waveform distortions, sags and swells, and the electro-magnetic interference (EMI). There are numerous examples of momentary voltage dips resulting in tripping of motor drives, nonlinear loads causing lamp flicker, and so on. Many of these problems can be eliminated by fast acting static var compensators and active filters. But their cost and a lack of adequate performance have limited their application. The objective of the proposed research is to develop a novel all- active hybrid converter arrangement for solving Power Quality problems, initially for medium distribution voltages such as 4.16 kV and 7.2 kV, which excels in the areas of efficiency, cost, performance and EMI (Electro-Magnetic Interference), without sacrificing reliability. ***